[SCM] Gmsh packaging. Gmsh is an automatic 3D finite element mesh generator. branch, master, updated. upstream/2.5.1_beta1_svn9373_dfsg-41-g53a12be
Anton Gladky
gladky.anton at gmail.com
Wed Jul 6 20:29:02 UTC 2011
The following commit has been merged in the master branch:
commit 41822d3a2b110565f2251f43a26d9c3f710c588d
Author: Anton Gladky <gladky.anton at gmail.com>
Date: Wed Jul 6 20:07:12 2011 +0200
Disable gl2ps more nicely.
diff --git a/debian/patches/delete_gl2ps_from_source.patch b/debian/patches/delete_gl2ps_from_source.patch
index a65cfda..40ea3bc 100644
--- a/debian/patches/delete_gl2ps_from_source.patch
+++ b/debian/patches/delete_gl2ps_from_source.patch
@@ -1,6243 +1,6 @@
Description: delete gl2ps.* and use packaged version.
Author: Anton Gladky <gladky.anton at gmail.com>
---- a/Graphics/gl2ps.cpp
-+++ /dev/null
-@@ -1,6031 +0,0 @@
--/*
-- * GL2PS, an OpenGL to PostScript Printing Library
-- * Copyright (C) 1999-2009 C. Geuzaine
-- *
-- * This program is free software; you can redistribute it and/or
-- * modify it under the terms of either:
-- *
-- * a) the GNU Library General Public License as published by the Free
-- * Software Foundation, either version 2 of the License, or (at your
-- * option) any later version; or
-- *
-- * b) the GL2PS License as published by Christophe Geuzaine, either
-- * version 2 of the License, or (at your option) any later version.
-- *
-- * This program is distributed in the hope that it will be useful, but
-- * WITHOUT ANY WARRANTY; without even the implied warranty of
-- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See either
-- * the GNU Library General Public License or the GL2PS License for
-- * more details.
-- *
-- * You should have received a copy of the GNU Library General Public
-- * License along with this library in the file named "COPYING.LGPL";
-- * if not, write to the Free Software Foundation, Inc., 675 Mass Ave,
-- * Cambridge, MA 02139, USA.
-- *
-- * You should have received a copy of the GL2PS License with this
-- * library in the file named "COPYING.GL2PS"; if not, I will be glad
-- * to provide one.
-- *
-- * For the latest info about gl2ps and a full list of contributors,
-- * see http://www.geuz.org/gl2ps/.
-- *
-- * Please report all bugs and problems to <gl2ps at geuz.org>.
-- */
--
--#include "gl2ps.h"
--
--#include <math.h>
--#include <string.h>
--#include <sys/types.h>
--#include <stdarg.h>
--#include <time.h>
--#include <float.h>
--
--#if defined(GL2PS_HAVE_ZLIB)
--#include <zlib.h>
--#endif
--
--#if defined(GL2PS_HAVE_LIBPNG)
--#include <png.h>
--#endif
--
--/*********************************************************************
-- *
-- * Private definitions, data structures and prototypes
-- *
-- *********************************************************************/
--
--/* Magic numbers (assuming that the order of magnitude of window
-- coordinates is 10^3) */
--
--#define GL2PS_EPSILON 5.0e-3F
--#define GL2PS_ZSCALE 1000.0F
--#define GL2PS_ZOFFSET 5.0e-2F
--#define GL2PS_ZOFFSET_LARGE 20.0F
--#define GL2PS_ZERO(arg) (fabs(arg) < 1.e-20)
--
--/* Primitive types */
--
--#define GL2PS_NO_TYPE -1
--#define GL2PS_TEXT 1
--#define GL2PS_POINT 2
--#define GL2PS_LINE 3
--#define GL2PS_QUADRANGLE 4
--#define GL2PS_TRIANGLE 5
--#define GL2PS_PIXMAP 6
--#define GL2PS_IMAGEMAP 7
--#define GL2PS_IMAGEMAP_WRITTEN 8
--#define GL2PS_IMAGEMAP_VISIBLE 9
--#define GL2PS_SPECIAL 10
--
--/* BSP tree primitive comparison */
--
--#define GL2PS_COINCIDENT 1
--#define GL2PS_IN_FRONT_OF 2
--#define GL2PS_IN_BACK_OF 3
--#define GL2PS_SPANNING 4
--
--/* 2D BSP tree primitive comparison */
--
--#define GL2PS_POINT_COINCIDENT 0
--#define GL2PS_POINT_INFRONT 1
--#define GL2PS_POINT_BACK 2
--
--/* Internal feedback buffer pass-through tokens */
--
--#define GL2PS_BEGIN_OFFSET_TOKEN 1
--#define GL2PS_END_OFFSET_TOKEN 2
--#define GL2PS_BEGIN_BOUNDARY_TOKEN 3
--#define GL2PS_END_BOUNDARY_TOKEN 4
--#define GL2PS_BEGIN_STIPPLE_TOKEN 5
--#define GL2PS_END_STIPPLE_TOKEN 6
--#define GL2PS_POINT_SIZE_TOKEN 7
--#define GL2PS_LINE_WIDTH_TOKEN 8
--#define GL2PS_BEGIN_BLEND_TOKEN 9
--#define GL2PS_END_BLEND_TOKEN 10
--#define GL2PS_SRC_BLEND_TOKEN 11
--#define GL2PS_DST_BLEND_TOKEN 12
--#define GL2PS_IMAGEMAP_TOKEN 13
--#define GL2PS_DRAW_PIXELS_TOKEN 14
--#define GL2PS_TEXT_TOKEN 15
--
--typedef enum {
-- T_UNDEFINED = -1,
-- T_CONST_COLOR = 1,
-- T_VAR_COLOR = 1<<1,
-- T_ALPHA_1 = 1<<2,
-- T_ALPHA_LESS_1 = 1<<3,
-- T_VAR_ALPHA = 1<<4
--} GL2PS_TRIANGLE_PROPERTY;
--
--typedef GLfloat GL2PSxyz[3];
--typedef GLfloat GL2PSplane[4];
--
--typedef struct _GL2PSbsptree2d GL2PSbsptree2d;
--
--struct _GL2PSbsptree2d {
-- GL2PSplane plane;
-- GL2PSbsptree2d *front, *back;
--};
--
--typedef struct {
-- GLint nmax, size, incr, n;
-- char *array;
--} GL2PSlist;
--
--typedef struct _GL2PSbsptree GL2PSbsptree;
--
--struct _GL2PSbsptree {
-- GL2PSplane plane;
-- GL2PSlist *primitives;
-- GL2PSbsptree *front, *back;
--};
--
--typedef struct {
-- GL2PSxyz xyz;
-- GL2PSrgba rgba;
--} GL2PSvertex;
--
--typedef struct {
-- GL2PSvertex vertex[3];
-- int prop;
--} GL2PStriangle;
--
--typedef struct {
-- GLshort fontsize;
-- char *str, *fontname;
-- /* Note: for a 'special' string, 'alignment' holds the format
-- (PostScript, PDF, etc.) of the special string */
-- GLint alignment;
-- GLfloat angle;
--} GL2PSstring;
--
--typedef struct {
-- GLsizei width, height;
-- /* Note: for an imagemap, 'type' indicates if it has already been
-- written to the file or not, and 'format' indicates if it is
-- visible or not */
-- GLenum format, type;
-- GLfloat *pixels;
--} GL2PSimage;
--
--typedef struct _GL2PSimagemap GL2PSimagemap;
--
--struct _GL2PSimagemap {
-- GL2PSimage *image;
-- GL2PSimagemap *next;
--};
--
--typedef struct {
-- GLshort type, numverts;
-- GLushort pattern;
-- char boundary, offset, culled;
-- GLint factor;
-- GLfloat width;
-- GL2PSvertex *verts;
-- union {
-- GL2PSstring *text;
-- GL2PSimage *image;
-- } data;
--} GL2PSprimitive;
--
--typedef struct {
--#if defined(GL2PS_HAVE_ZLIB)
-- Bytef *dest, *src, *start;
-- uLongf destLen, srcLen;
--#else
-- int dummy;
--#endif
--} GL2PScompress;
--
--typedef struct{
-- GL2PSlist* ptrlist;
-- int gsno, fontno, imno, shno, maskshno, trgroupno;
-- int gsobjno, fontobjno, imobjno, shobjno, maskshobjno, trgroupobjno;
--} GL2PSpdfgroup;
--
--typedef struct {
-- /* General */
-- GLint format, sort, options, colorsize, colormode, buffersize;
-- char *title, *producer, *filename;
-- GLboolean boundary, blending;
-- GLfloat *feedback, offset[2], lastlinewidth;
-- GLint viewport[4], blendfunc[2], lastfactor;
-- GL2PSrgba *colormap, lastrgba, threshold, bgcolor;
-- GLushort lastpattern;
-- GL2PSvertex lastvertex;
-- GL2PSlist *primitives, *auxprimitives;
-- FILE *stream;
-- GL2PScompress *compress;
-- GLboolean header;
--
-- /* BSP-specific */
-- GLint maxbestroot;
--
-- /* Occlusion culling-specific */
-- GLboolean zerosurfacearea;
-- GL2PSbsptree2d *imagetree;
-- GL2PSprimitive *primitivetoadd;
--
-- /* PDF-specific */
-- int streamlength;
-- GL2PSlist *pdfprimlist, *pdfgrouplist;
-- int *xreflist;
-- int objects_stack; /* available objects */
-- int extgs_stack; /* graphics state object number */
-- int font_stack; /* font object number */
-- int im_stack; /* image object number */
-- int trgroupobjects_stack; /* xobject numbers */
-- int shader_stack; /* shader object numbers */
-- int mshader_stack; /* mask shader object numbers */
--
-- /* for image map list */
-- GL2PSimagemap *imagemap_head;
-- GL2PSimagemap *imagemap_tail;
--} GL2PScontext;
--
--typedef struct {
-- void (*printHeader)(void);
-- void (*printFooter)(void);
-- void (*beginViewport)(GLint viewport[4]);
-- GLint (*endViewport)(void);
-- void (*printPrimitive)(void *data);
-- void (*printFinalPrimitive)(void);
-- const char *file_extension;
-- const char *description;
--} GL2PSbackend;
--
--/* The gl2ps context. gl2ps is not thread safe (we should create a
-- local GL2PScontext during gl2psBeginPage) */
--
--static GL2PScontext *gl2ps = NULL;
--
--/* Need to forward-declare this one */
--
--static GLint gl2psPrintPrimitives(void);
--
--/*********************************************************************
-- *
-- * Utility routines
-- *
-- *********************************************************************/
--
--static void gl2psMsg(GLint level, const char *fmt, ...)
--{
-- va_list args;
--
-- if(!(gl2ps->options & GL2PS_SILENT)){
-- switch(level){
-- case GL2PS_INFO : fprintf(stderr, "GL2PS info: "); break;
-- case GL2PS_WARNING : fprintf(stderr, "GL2PS warning: "); break;
-- case GL2PS_ERROR : fprintf(stderr, "GL2PS error: "); break;
-- }
-- va_start(args, fmt);
-- vfprintf(stderr, fmt, args);
-- va_end(args);
-- fprintf(stderr, "\n");
-- }
-- /* if(level == GL2PS_ERROR) exit(1); */
--}
--
--static void *gl2psMalloc(size_t size)
--{
-- void *ptr;
--
-- if(!size) return NULL;
-- ptr = malloc(size);
-- if(!ptr){
-- gl2psMsg(GL2PS_ERROR, "Couldn't allocate requested memory");
-- return NULL;
-- }
-- return ptr;
--}
--
--static void *gl2psRealloc(void *ptr, size_t size)
--{
-- if(!size) return NULL;
-- ptr = realloc(ptr, size);
-- if(!ptr){
-- gl2psMsg(GL2PS_ERROR, "Couldn't reallocate requested memory");
-- return NULL;
-- }
-- return ptr;
--}
--
--static void gl2psFree(void *ptr)
--{
-- if(!ptr) return;
-- free(ptr);
--}
--
--static size_t gl2psWriteBigEndian(unsigned long data, size_t bytes)
--{
-- size_t i;
-- size_t size = sizeof(unsigned long);
-- for(i = 1; i <= bytes; ++i){
-- fputc(0xff & (data >> (size-i) * 8), gl2ps->stream);
-- }
-- return bytes;
--}
--
--/* zlib compression helper routines */
--
--#if defined(GL2PS_HAVE_ZLIB)
--
--static void gl2psSetupCompress(void)
--{
-- gl2ps->compress = (GL2PScompress*)gl2psMalloc(sizeof(GL2PScompress));
-- gl2ps->compress->src = NULL;
-- gl2ps->compress->start = NULL;
-- gl2ps->compress->dest = NULL;
-- gl2ps->compress->srcLen = 0;
-- gl2ps->compress->destLen = 0;
--}
--
--static void gl2psFreeCompress(void)
--{
-- if(!gl2ps->compress)
-- return;
-- gl2psFree(gl2ps->compress->start);
-- gl2psFree(gl2ps->compress->dest);
-- gl2ps->compress->src = NULL;
-- gl2ps->compress->start = NULL;
-- gl2ps->compress->dest = NULL;
-- gl2ps->compress->srcLen = 0;
-- gl2ps->compress->destLen = 0;
--}
--
--static int gl2psAllocCompress(unsigned int srcsize)
--{
-- gl2psFreeCompress();
--
-- if(!gl2ps->compress || !srcsize)
-- return GL2PS_ERROR;
--
-- gl2ps->compress->srcLen = srcsize;
-- gl2ps->compress->destLen = (int)ceil(1.001 * gl2ps->compress->srcLen + 12);
-- gl2ps->compress->src = (Bytef*)gl2psMalloc(gl2ps->compress->srcLen);
-- gl2ps->compress->start = gl2ps->compress->src;
-- gl2ps->compress->dest = (Bytef*)gl2psMalloc(gl2ps->compress->destLen);
--
-- return GL2PS_SUCCESS;
--}
--
--static void *gl2psReallocCompress(unsigned int srcsize)
--{
-- if(!gl2ps->compress || !srcsize)
-- return NULL;
--
-- if(srcsize < gl2ps->compress->srcLen)
-- return gl2ps->compress->start;
--
-- gl2ps->compress->srcLen = srcsize;
-- gl2ps->compress->destLen = (int)ceil(1.001 * gl2ps->compress->srcLen + 12);
-- gl2ps->compress->src = (Bytef*)gl2psRealloc(gl2ps->compress->src,
-- gl2ps->compress->srcLen);
-- gl2ps->compress->start = gl2ps->compress->src;
-- gl2ps->compress->dest = (Bytef*)gl2psRealloc(gl2ps->compress->dest,
-- gl2ps->compress->destLen);
--
-- return gl2ps->compress->start;
--}
--
--static size_t gl2psWriteBigEndianCompress(unsigned long data, size_t bytes)
--{
-- size_t i;
-- size_t size = sizeof(unsigned long);
-- for(i = 1; i <= bytes; ++i){
-- *gl2ps->compress->src = (Bytef)(0xff & (data >> (size-i) * 8));
-- ++gl2ps->compress->src;
-- }
-- return bytes;
--}
--
--static int gl2psDeflate(void)
--{
-- /* For compatibility with older zlib versions, we use compress(...)
-- instead of compress2(..., Z_BEST_COMPRESSION) */
-- return compress(gl2ps->compress->dest, &gl2ps->compress->destLen,
-- gl2ps->compress->start, gl2ps->compress->srcLen);
--}
--
--#endif
--
--static int gl2psPrintf(const char* fmt, ...)
--{
-- int ret;
-- va_list args;
--
--#if defined(GL2PS_HAVE_ZLIB)
-- unsigned int oldsize = 0;
-- static char buf[1000];
-- if(gl2ps->options & GL2PS_COMPRESS){
-- va_start(args, fmt);
-- ret = vsprintf(buf, fmt, args);
-- va_end(args);
-- oldsize = gl2ps->compress->srcLen;
-- gl2ps->compress->start = (Bytef*)gl2psReallocCompress(oldsize + ret);
-- memcpy(gl2ps->compress->start+oldsize, buf, ret);
-- ret = 0;
-- }
-- else{
--#endif
-- va_start(args, fmt);
-- ret = vfprintf(gl2ps->stream, fmt, args);
-- va_end(args);
--#if defined(GL2PS_HAVE_ZLIB)
-- }
--#endif
-- return ret;
--}
--
--static void gl2psPrintGzipHeader()
--{
--#if defined(GL2PS_HAVE_ZLIB)
-- char tmp[10] = {'\x1f', '\x8b', /* magic numbers: 0x1f, 0x8b */
-- 8, /* compression method: Z_DEFLATED */
-- 0, /* flags */
-- 0, 0, 0, 0, /* time */
-- 2, /* extra flags: max compression */
-- '\x03'}; /* OS code: 0x03 (Unix) */
--
-- if(gl2ps->options & GL2PS_COMPRESS){
-- gl2psSetupCompress();
-- /* add the gzip file header */
-- fwrite(tmp, 10, 1, gl2ps->stream);
-- }
--#endif
--}
--
--static void gl2psPrintGzipFooter()
--{
--#if defined(GL2PS_HAVE_ZLIB)
-- int n;
-- uLong crc, len;
-- char tmp[8];
--
-- if(gl2ps->options & GL2PS_COMPRESS){
-- if(Z_OK != gl2psDeflate()){
-- gl2psMsg(GL2PS_ERROR, "Zlib deflate error");
-- }
-- else{
-- /* determine the length of the header in the zlib stream */
-- n = 2; /* CMF+FLG */
-- if(gl2ps->compress->dest[1] & (1<<5)){
-- n += 4; /* DICTID */
-- }
-- /* write the data, without the zlib header and footer */
-- fwrite(gl2ps->compress->dest+n, gl2ps->compress->destLen-(n+4),
-- 1, gl2ps->stream);
-- /* add the gzip file footer */
-- crc = crc32(0L, gl2ps->compress->start, gl2ps->compress->srcLen);
-- for(n = 0; n < 4; ++n){
-- tmp[n] = (char)(crc & 0xff);
-- crc >>= 8;
-- }
-- len = gl2ps->compress->srcLen;
-- for(n = 4; n < 8; ++n){
-- tmp[n] = (char)(len & 0xff);
-- len >>= 8;
-- }
-- fwrite(tmp, 8, 1, gl2ps->stream);
-- }
-- gl2psFreeCompress();
-- gl2psFree(gl2ps->compress);
-- gl2ps->compress = NULL;
-- }
--#endif
--}
--
--/* The list handling routines */
--
--static void gl2psListRealloc(GL2PSlist *list, GLint n)
--{
-- if(!list){
-- gl2psMsg(GL2PS_ERROR, "Cannot reallocate NULL list");
-- return;
-- }
-- if(n <= 0) return;
-- if(!list->array){
-- list->nmax = n;
-- list->array = (char*)gl2psMalloc(list->nmax * list->size);
-- }
-- else{
-- if(n > list->nmax){
-- list->nmax = ((n - 1) / list->incr + 1) * list->incr;
-- list->array = (char*)gl2psRealloc(list->array,
-- list->nmax * list->size);
-- }
-- }
--}
--
--static GL2PSlist *gl2psListCreate(GLint n, GLint incr, GLint size)
--{
-- GL2PSlist *list;
--
-- if(n < 0) n = 0;
-- if(incr <= 0) incr = 1;
-- list = (GL2PSlist*)gl2psMalloc(sizeof(GL2PSlist));
-- list->nmax = 0;
-- list->incr = incr;
-- list->size = size;
-- list->n = 0;
-- list->array = NULL;
-- gl2psListRealloc(list, n);
-- return list;
--}
--
--static void gl2psListReset(GL2PSlist *list)
--{
-- if(!list) return;
-- list->n = 0;
--}
--
--static void gl2psListDelete(GL2PSlist *list)
--{
-- if(!list) return;
-- gl2psFree(list->array);
-- gl2psFree(list);
--}
--
--static void gl2psListAdd(GL2PSlist *list, void *data)
--{
-- if(!list){
-- gl2psMsg(GL2PS_ERROR, "Cannot add into unallocated list");
-- return;
-- }
-- list->n++;
-- gl2psListRealloc(list, list->n);
-- memcpy(&list->array[(list->n - 1) * list->size], data, list->size);
--}
--
--static int gl2psListNbr(GL2PSlist *list)
--{
-- if(!list)
-- return 0;
-- return list->n;
--}
--
--static void *gl2psListPointer(GL2PSlist *list, GLint index)
--{
-- if(!list){
-- gl2psMsg(GL2PS_ERROR, "Cannot point into unallocated list");
-- return NULL;
-- }
-- if((index < 0) || (index >= list->n)){
-- gl2psMsg(GL2PS_ERROR, "Wrong list index in gl2psListPointer");
-- return NULL;
-- }
-- return &list->array[index * list->size];
--}
--
--static void gl2psListSort(GL2PSlist *list,
-- int (*fcmp)(const void *a, const void *b))
--{
-- if(!list)
-- return;
-- qsort(list->array, list->n, list->size, fcmp);
--}
--
--static void gl2psListAction(GL2PSlist *list, void (*action)(void *data))
--{
-- GLint i;
--
-- for(i = 0; i < gl2psListNbr(list); i++){
-- (*action)(gl2psListPointer(list, i));
-- }
--}
--
--static void gl2psListActionInverse(GL2PSlist *list, void (*action)(void *data))
--{
-- GLint i;
--
-- for(i = gl2psListNbr(list); i > 0; i--){
-- (*action)(gl2psListPointer(list, i-1));
-- }
--}
--
--#if defined(GL2PS_HAVE_LIBPNG)
--
--static void gl2psListRead(GL2PSlist *list, int index, void *data)
--{
-- if((index < 0) || (index >= list->n))
-- gl2psMsg(GL2PS_ERROR, "Wrong list index in gl2psListRead");
-- memcpy(data, &list->array[index * list->size], list->size);
--}
--
--static void gl2psEncodeBase64Block(unsigned char in[3], unsigned char out[4], int len)
--{
-- static const char cb64[] =
-- "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/";
--
-- out[0] = cb64[ in[0] >> 2 ];
-- out[1] = cb64[ ((in[0] & 0x03) << 4) | ((in[1] & 0xf0) >> 4) ];
-- out[2] = (len > 1) ? cb64[ ((in[1] & 0x0f) << 2) | ((in[2] & 0xc0) >> 6) ] : '=';
-- out[3] = (len > 2) ? cb64[ in[2] & 0x3f ] : '=';
--}
--
--static void gl2psListEncodeBase64(GL2PSlist *list)
--{
-- unsigned char *buffer, in[3], out[4];
-- int i, n, index, len;
--
-- n = list->n * list->size;
-- buffer = (unsigned char*)gl2psMalloc(n * sizeof(unsigned char));
-- memcpy(buffer, list->array, n * sizeof(unsigned char));
-- gl2psListReset(list);
--
-- index = 0;
-- while(index < n) {
-- len = 0;
-- for(i = 0; i < 3; i++) {
-- if(index < n){
-- in[i] = buffer[index];
-- len++;
-- }
-- else{
-- in[i] = 0;
-- }
-- index++;
-- }
-- if(len) {
-- gl2psEncodeBase64Block(in, out, len);
-- for(i = 0; i < 4; i++)
-- gl2psListAdd(list, &out[i]);
-- }
-- }
-- gl2psFree(buffer);
--}
--
--#endif
--
--/* Helpers for rgba colors */
--
--static GLboolean gl2psSameColor(GL2PSrgba rgba1, GL2PSrgba rgba2)
--{
-- if(!GL2PS_ZERO(rgba1[0] - rgba2[0]) ||
-- !GL2PS_ZERO(rgba1[1] - rgba2[1]) ||
-- !GL2PS_ZERO(rgba1[2] - rgba2[2]))
-- return GL_FALSE;
-- return GL_TRUE;
--}
--
--static GLboolean gl2psVertsSameColor(const GL2PSprimitive *prim)
--{
-- int i;
--
-- for(i = 1; i < prim->numverts; i++){
-- if(!gl2psSameColor(prim->verts[0].rgba, prim->verts[i].rgba)){
-- return GL_FALSE;
-- }
-- }
-- return GL_TRUE;
--}
--
--static GLboolean gl2psSameColorThreshold(int n, GL2PSrgba rgba[],
-- GL2PSrgba threshold)
--{
-- int i;
--
-- if(n < 2) return GL_TRUE;
--
-- for(i = 1; i < n; i++){
-- if(fabs(rgba[0][0] - rgba[i][0]) > threshold[0] ||
-- fabs(rgba[0][1] - rgba[i][1]) > threshold[1] ||
-- fabs(rgba[0][2] - rgba[i][2]) > threshold[2])
-- return GL_FALSE;
-- }
--
-- return GL_TRUE;
--}
--
--static void gl2psSetLastColor(GL2PSrgba rgba)
--{
-- int i;
-- for(i = 0; i < 3; ++i){
-- gl2ps->lastrgba[i] = rgba[i];
-- }
--}
--
--static GLfloat gl2psGetRGB(GL2PSimage *im, GLuint x, GLuint y,
-- GLfloat *red, GLfloat *green, GLfloat *blue)
--{
--
-- GLsizei width = im->width;
-- GLsizei height = im->height;
-- GLfloat *pixels = im->pixels;
-- GLfloat *pimag;
--
-- /* OpenGL image is from down to up, PS image is up to down */
-- switch(im->format){
-- case GL_RGBA:
-- pimag = pixels + 4 * (width * (height - 1 - y) + x);
-- break;
-- case GL_RGB:
-- default:
-- pimag = pixels + 3 * (width * (height - 1 - y) + x);
-- break;
-- }
-- *red = *pimag; pimag++;
-- *green = *pimag; pimag++;
-- *blue = *pimag; pimag++;
--
-- return (im->format == GL_RGBA) ? *pimag : 1.0F;
--}
--
--/* Helper routines for pixmaps */
--
--static GL2PSimage *gl2psCopyPixmap(GL2PSimage *im)
--{
-- int size;
-- GL2PSimage *image = (GL2PSimage*)gl2psMalloc(sizeof(GL2PSimage));
--
-- image->width = im->width;
-- image->height = im->height;
-- image->format = im->format;
-- image->type = im->type;
--
-- switch(image->format){
-- case GL_RGBA:
-- size = image->height * image->width * 4 * sizeof(GLfloat);
-- break;
-- case GL_RGB:
-- default:
-- size = image->height * image->width * 3 * sizeof(GLfloat);
-- break;
-- }
--
-- image->pixels = (GLfloat*)gl2psMalloc(size);
-- memcpy(image->pixels, im->pixels, size);
--
-- return image;
--}
--
--static void gl2psFreePixmap(GL2PSimage *im)
--{
-- if(!im)
-- return;
-- gl2psFree(im->pixels);
-- gl2psFree(im);
--}
--
--#if defined(GL2PS_HAVE_LIBPNG)
--
--#if !defined(png_jmpbuf)
--# define png_jmpbuf(png_ptr) ((png_ptr)->jmpbuf)
--#endif
--
--static void gl2psUserWritePNG(png_structp png_ptr, png_bytep data, png_size_t length)
--{
-- unsigned int i;
-- GL2PSlist *png = (GL2PSlist*)png_get_io_ptr(png_ptr);
-- for(i = 0; i < length; i++)
-- gl2psListAdd(png, &data[i]);
--}
--
--static void gl2psUserFlushPNG(png_structp png_ptr)
--{
--}
--
--static void gl2psConvertPixmapToPNG(GL2PSimage *pixmap, GL2PSlist *png)
--{
-- png_structp png_ptr;
-- png_infop info_ptr;
-- unsigned char *row_data;
-- GLfloat dr, dg, db;
-- int row, col;
--
-- if(!(png_ptr = png_create_write_struct(PNG_LIBPNG_VER_STRING, NULL, NULL, NULL)))
-- return;
--
-- if(!(info_ptr = png_create_info_struct(png_ptr))){
-- png_destroy_write_struct(&png_ptr, NULL);
-- return;
-- }
--
-- if(setjmp(png_jmpbuf(png_ptr))) {
-- png_destroy_write_struct(&png_ptr, &info_ptr);
-- return;
-- }
--
-- png_set_write_fn(png_ptr, (void *)png, gl2psUserWritePNG, gl2psUserFlushPNG);
-- png_set_compression_level(png_ptr, Z_DEFAULT_COMPRESSION);
-- png_set_IHDR(png_ptr, info_ptr, pixmap->width, pixmap->height, 8,
-- PNG_COLOR_TYPE_RGB, PNG_INTERLACE_NONE, PNG_COMPRESSION_TYPE_BASE,
-- PNG_FILTER_TYPE_BASE);
-- png_write_info(png_ptr, info_ptr);
--
-- row_data = (unsigned char*)gl2psMalloc(3 * pixmap->width * sizeof(unsigned char));
-- for(row = 0; row < pixmap->height; row++){
-- for(col = 0; col < pixmap->width; col++){
-- gl2psGetRGB(pixmap, col, row, &dr, &dg, &db);
-- row_data[3*col] = (unsigned char)(255. * dr);
-- row_data[3*col+1] = (unsigned char)(255. * dg);
-- row_data[3*col+2] = (unsigned char)(255. * db);
-- }
-- png_write_row(png_ptr, (png_bytep)row_data);
-- }
-- gl2psFree(row_data);
--
-- png_write_end(png_ptr, info_ptr);
-- png_destroy_write_struct(&png_ptr, &info_ptr);
--}
--
--#endif
--
--/* Helper routines for text strings */
--
--static GLint gl2psAddText(GLint type, const char *str, const char *fontname,
-- GLshort fontsize, GLint alignment, GLfloat angle)
--{
-- GLfloat pos[4];
-- GL2PSprimitive *prim;
-- GLboolean valid;
--
-- if(!gl2ps || !str || !fontname) return GL2PS_UNINITIALIZED;
--
-- if(gl2ps->options & GL2PS_NO_TEXT) return GL2PS_SUCCESS;
--
-- glGetBooleanv(GL_CURRENT_RASTER_POSITION_VALID, &valid);
-- if(GL_FALSE == valid) return GL2PS_SUCCESS; /* the primitive is culled */
--
-- glGetFloatv(GL_CURRENT_RASTER_POSITION, pos);
--
-- prim = (GL2PSprimitive*)gl2psMalloc(sizeof(GL2PSprimitive));
-- prim->type = type;
-- prim->boundary = 0;
-- prim->numverts = 1;
-- prim->verts = (GL2PSvertex*)gl2psMalloc(sizeof(GL2PSvertex));
-- prim->verts[0].xyz[0] = pos[0];
-- prim->verts[0].xyz[1] = pos[1];
-- prim->verts[0].xyz[2] = pos[2];
-- prim->culled = 0;
-- prim->offset = 0;
-- prim->pattern = 0;
-- prim->factor = 0;
-- prim->width = 1;
-- glGetFloatv(GL_CURRENT_RASTER_COLOR, prim->verts[0].rgba);
-- prim->data.text = (GL2PSstring*)gl2psMalloc(sizeof(GL2PSstring));
-- prim->data.text->str = (char*)gl2psMalloc((strlen(str)+1)*sizeof(char));
-- strcpy(prim->data.text->str, str);
-- prim->data.text->fontname = (char*)gl2psMalloc((strlen(fontname)+1)*sizeof(char));
-- strcpy(prim->data.text->fontname, fontname);
-- prim->data.text->fontsize = fontsize;
-- prim->data.text->alignment = alignment;
-- prim->data.text->angle = angle;
--
-- gl2psListAdd(gl2ps->auxprimitives, &prim);
-- glPassThrough(GL2PS_TEXT_TOKEN);
--
-- return GL2PS_SUCCESS;
--}
--
--static GL2PSstring *gl2psCopyText(GL2PSstring *t)
--{
-- GL2PSstring *text = (GL2PSstring*)gl2psMalloc(sizeof(GL2PSstring));
-- text->str = (char*)gl2psMalloc((strlen(t->str)+1)*sizeof(char));
-- strcpy(text->str, t->str);
-- text->fontname = (char*)gl2psMalloc((strlen(t->fontname)+1)*sizeof(char));
-- strcpy(text->fontname, t->fontname);
-- text->fontsize = t->fontsize;
-- text->alignment = t->alignment;
-- text->angle = t->angle;
--
-- return text;
--}
--
--static void gl2psFreeText(GL2PSstring *text)
--{
-- if(!text)
-- return;
-- gl2psFree(text->str);
-- gl2psFree(text->fontname);
-- gl2psFree(text);
--}
--
--/* Helpers for blending modes */
--
--static GLboolean gl2psSupportedBlendMode(GLenum sfactor, GLenum dfactor)
--{
-- /* returns TRUE if gl2ps supports the argument combination: only two
-- blending modes have been implemented so far */
--
-- if( (sfactor == GL_SRC_ALPHA && dfactor == GL_ONE_MINUS_SRC_ALPHA) ||
-- (sfactor == GL_ONE && dfactor == GL_ZERO) )
-- return GL_TRUE;
-- return GL_FALSE;
--}
--
--static void gl2psAdaptVertexForBlending(GL2PSvertex *v)
--{
-- /* Transforms vertex depending on the actual blending function -
-- currently the vertex v is considered as source vertex and his
-- alpha value is changed to 1.0 if source blending GL_ONE is
-- active. This might be extended in the future */
--
-- if(!v || !gl2ps)
-- return;
--
-- if(gl2ps->options & GL2PS_NO_BLENDING || !gl2ps->blending){
-- v->rgba[3] = 1.0F;
-- return;
-- }
--
-- switch(gl2ps->blendfunc[0]){
-- case GL_ONE:
-- v->rgba[3] = 1.0F;
-- break;
-- default:
-- break;
-- }
--}
--
--static void gl2psAssignTriangleProperties(GL2PStriangle *t)
--{
-- /* int i; */
--
-- t->prop = T_VAR_COLOR;
--
-- /* Uncommenting the following lines activates an even more fine
-- grained distinction between triangle types - please don't delete,
-- a remarkable amount of PDF handling code inside this file depends
-- on it if activated */
-- /*
-- t->prop = T_CONST_COLOR;
-- for(i = 0; i < 3; ++i){
-- if(!GL2PS_ZERO(t->vertex[0].rgba[i] - t->vertex[1].rgba[i]) ||
-- !GL2PS_ZERO(t->vertex[1].rgba[i] - t->vertex[2].rgba[i])){
-- t->prop = T_VAR_COLOR;
-- break;
-- }
-- }
-- */
--
-- if(!GL2PS_ZERO(t->vertex[0].rgba[3] - t->vertex[1].rgba[3]) ||
-- !GL2PS_ZERO(t->vertex[1].rgba[3] - t->vertex[2].rgba[3])){
-- t->prop |= T_VAR_ALPHA;
-- }
-- else{
-- if(t->vertex[0].rgba[3] < 1)
-- t->prop |= T_ALPHA_LESS_1;
-- else
-- t->prop |= T_ALPHA_1;
-- }
--}
--
--static void gl2psFillTriangleFromPrimitive(GL2PStriangle *t, GL2PSprimitive *p,
-- GLboolean assignprops)
--{
-- t->vertex[0] = p->verts[0];
-- t->vertex[1] = p->verts[1];
-- t->vertex[2] = p->verts[2];
-- if(GL_TRUE == assignprops)
-- gl2psAssignTriangleProperties(t);
--}
--
--static void gl2psInitTriangle(GL2PStriangle *t)
--{
-- int i;
-- GL2PSvertex vertex = { {-1.0F, -1.0F, -1.0F}, {-1.0F, -1.0F, -1.0F, -1.0F} };
-- for(i = 0; i < 3; i++)
-- t->vertex[i] = vertex;
-- t->prop = T_UNDEFINED;
--}
--
--/* Miscellaneous helper routines */
--
--static GL2PSprimitive *gl2psCopyPrimitive(GL2PSprimitive *p)
--{
-- GL2PSprimitive *prim;
--
-- if(!p){
-- gl2psMsg(GL2PS_ERROR, "Trying to copy an empty primitive");
-- return NULL;
-- }
--
-- prim = (GL2PSprimitive*)gl2psMalloc(sizeof(GL2PSprimitive));
--
-- prim->type = p->type;
-- prim->numverts = p->numverts;
-- prim->boundary = p->boundary;
-- prim->offset = p->offset;
-- prim->pattern = p->pattern;
-- prim->factor = p->factor;
-- prim->culled = p->culled;
-- prim->width = p->width;
-- prim->verts = (GL2PSvertex*)gl2psMalloc(p->numverts*sizeof(GL2PSvertex));
-- memcpy(prim->verts, p->verts, p->numverts * sizeof(GL2PSvertex));
--
-- switch(prim->type){
-- case GL2PS_PIXMAP :
-- prim->data.image = gl2psCopyPixmap(p->data.image);
-- break;
-- case GL2PS_TEXT :
-- case GL2PS_SPECIAL :
-- prim->data.text = gl2psCopyText(p->data.text);
-- break;
-- default:
-- break;
-- }
--
-- return prim;
--}
--
--static GLboolean gl2psSamePosition(GL2PSxyz p1, GL2PSxyz p2)
--{
-- if(!GL2PS_ZERO(p1[0] - p2[0]) ||
-- !GL2PS_ZERO(p1[1] - p2[1]) ||
-- !GL2PS_ZERO(p1[2] - p2[2]))
-- return GL_FALSE;
-- return GL_TRUE;
--}
--
--/*********************************************************************
-- *
-- * 3D sorting routines
-- *
-- *********************************************************************/
--
--static GLfloat gl2psComparePointPlane(GL2PSxyz point, GL2PSplane plane)
--{
-- return (plane[0] * point[0] +
-- plane[1] * point[1] +
-- plane[2] * point[2] +
-- plane[3]);
--}
--
--static GLfloat gl2psPsca(GLfloat *a, GLfloat *b)
--{
-- return (a[0]*b[0] + a[1]*b[1] + a[2]*b[2]);
--}
--
--static void gl2psPvec(GLfloat *a, GLfloat *b, GLfloat *c)
--{
-- c[0] = a[1]*b[2] - a[2]*b[1];
-- c[1] = a[2]*b[0] - a[0]*b[2];
-- c[2] = a[0]*b[1] - a[1]*b[0];
--}
--
--static GLfloat gl2psNorm(GLfloat *a)
--{
-- return (GLfloat)sqrt(a[0]*a[0] + a[1]*a[1] + a[2]*a[2]);
--}
--
--static void gl2psGetNormal(GLfloat *a, GLfloat *b, GLfloat *c)
--{
-- GLfloat norm;
--
-- gl2psPvec(a, b, c);
-- if(!GL2PS_ZERO(norm = gl2psNorm(c))){
-- c[0] = c[0] / norm;
-- c[1] = c[1] / norm;
-- c[2] = c[2] / norm;
-- }
-- else{
-- /* The plane is still wrong despite our tests in gl2psGetPlane.
-- Let's return a dummy value for now (this is a hack: we should
-- do more intelligent tests in GetPlane) */
-- c[0] = c[1] = 0.0F;
-- c[2] = 1.0F;
-- }
--}
--
--static void gl2psGetPlane(GL2PSprimitive *prim, GL2PSplane plane)
--{
-- GL2PSxyz v = {0.0F, 0.0F, 0.0F}, w = {0.0F, 0.0F, 0.0F};
--
-- switch(prim->type){
-- case GL2PS_TRIANGLE :
-- case GL2PS_QUADRANGLE :
-- v[0] = prim->verts[1].xyz[0] - prim->verts[0].xyz[0];
-- v[1] = prim->verts[1].xyz[1] - prim->verts[0].xyz[1];
-- v[2] = prim->verts[1].xyz[2] - prim->verts[0].xyz[2];
-- w[0] = prim->verts[2].xyz[0] - prim->verts[0].xyz[0];
-- w[1] = prim->verts[2].xyz[1] - prim->verts[0].xyz[1];
-- w[2] = prim->verts[2].xyz[2] - prim->verts[0].xyz[2];
-- if((GL2PS_ZERO(v[0]) && GL2PS_ZERO(v[1]) && GL2PS_ZERO(v[2])) ||
-- (GL2PS_ZERO(w[0]) && GL2PS_ZERO(w[1]) && GL2PS_ZERO(w[2]))){
-- plane[0] = plane[1] = 0.0F;
-- plane[2] = 1.0F;
-- plane[3] = -prim->verts[0].xyz[2];
-- }
-- else{
-- gl2psGetNormal(v, w, plane);
-- plane[3] =
-- - plane[0] * prim->verts[0].xyz[0]
-- - plane[1] * prim->verts[0].xyz[1]
-- - plane[2] * prim->verts[0].xyz[2];
-- }
-- break;
-- case GL2PS_LINE :
-- v[0] = prim->verts[1].xyz[0] - prim->verts[0].xyz[0];
-- v[1] = prim->verts[1].xyz[1] - prim->verts[0].xyz[1];
-- v[2] = prim->verts[1].xyz[2] - prim->verts[0].xyz[2];
-- if(GL2PS_ZERO(v[0]) && GL2PS_ZERO(v[1]) && GL2PS_ZERO(v[2])){
-- plane[0] = plane[1] = 0.0F;
-- plane[2] = 1.0F;
-- plane[3] = -prim->verts[0].xyz[2];
-- }
-- else{
-- if(GL2PS_ZERO(v[0])) w[0] = 1.0F;
-- else if(GL2PS_ZERO(v[1])) w[1] = 1.0F;
-- else w[2] = 1.0F;
-- gl2psGetNormal(v, w, plane);
-- plane[3] =
-- - plane[0] * prim->verts[0].xyz[0]
-- - plane[1] * prim->verts[0].xyz[1]
-- - plane[2] * prim->verts[0].xyz[2];
-- }
-- break;
-- case GL2PS_POINT :
-- case GL2PS_PIXMAP :
-- case GL2PS_TEXT :
-- case GL2PS_SPECIAL :
-- case GL2PS_IMAGEMAP:
-- plane[0] = plane[1] = 0.0F;
-- plane[2] = 1.0F;
-- plane[3] = -prim->verts[0].xyz[2];
-- break;
-- default :
-- gl2psMsg(GL2PS_ERROR, "Unknown primitive type in BSP tree");
-- plane[0] = plane[1] = plane[3] = 0.0F;
-- plane[2] = 1.0F;
-- break;
-- }
--}
--
--static void gl2psCutEdge(GL2PSvertex *a, GL2PSvertex *b, GL2PSplane plane,
-- GL2PSvertex *c)
--{
-- GL2PSxyz v;
-- GLfloat sect, psca;
--
-- v[0] = b->xyz[0] - a->xyz[0];
-- v[1] = b->xyz[1] - a->xyz[1];
-- v[2] = b->xyz[2] - a->xyz[2];
--
-- if(!GL2PS_ZERO(psca = gl2psPsca(plane, v)))
-- sect = -gl2psComparePointPlane(a->xyz, plane) / psca;
-- else
-- sect = 0.0F;
--
-- c->xyz[0] = a->xyz[0] + v[0] * sect;
-- c->xyz[1] = a->xyz[1] + v[1] * sect;
-- c->xyz[2] = a->xyz[2] + v[2] * sect;
--
-- c->rgba[0] = (1 - sect) * a->rgba[0] + sect * b->rgba[0];
-- c->rgba[1] = (1 - sect) * a->rgba[1] + sect * b->rgba[1];
-- c->rgba[2] = (1 - sect) * a->rgba[2] + sect * b->rgba[2];
-- c->rgba[3] = (1 - sect) * a->rgba[3] + sect * b->rgba[3];
--}
--
--static void gl2psCreateSplitPrimitive(GL2PSprimitive *parent, GL2PSplane plane,
-- GL2PSprimitive *child, GLshort numverts,
-- GLshort *index0, GLshort *index1)
--{
-- GLshort i;
--
-- if(parent->type == GL2PS_IMAGEMAP){
-- child->type = GL2PS_IMAGEMAP;
-- child->data.image = parent->data.image;
-- }
-- else{
-- if(numverts > 4){
-- gl2psMsg(GL2PS_WARNING, "%d vertices in polygon", numverts);
-- numverts = 4;
-- }
-- switch(numverts){
-- case 1 : child->type = GL2PS_POINT; break;
-- case 2 : child->type = GL2PS_LINE; break;
-- case 3 : child->type = GL2PS_TRIANGLE; break;
-- case 4 : child->type = GL2PS_QUADRANGLE; break;
-- default: child->type = GL2PS_NO_TYPE; break;
-- }
-- }
--
-- child->boundary = 0; /* FIXME: not done! */
-- child->culled = parent->culled;
-- child->offset = parent->offset;
-- child->pattern = parent->pattern;
-- child->factor = parent->factor;
-- child->width = parent->width;
-- child->numverts = numverts;
-- child->verts = (GL2PSvertex*)gl2psMalloc(numverts * sizeof(GL2PSvertex));
--
-- for(i = 0; i < numverts; i++){
-- if(index1[i] < 0){
-- child->verts[i] = parent->verts[index0[i]];
-- }
-- else{
-- gl2psCutEdge(&parent->verts[index0[i]], &parent->verts[index1[i]],
-- plane, &child->verts[i]);
-- }
-- }
--}
--
--static void gl2psAddIndex(GLshort *index0, GLshort *index1, GLshort *nb,
-- GLshort i, GLshort j)
--{
-- GLint k;
--
-- for(k = 0; k < *nb; k++){
-- if((index0[k] == i && index1[k] == j) ||
-- (index1[k] == i && index0[k] == j)) return;
-- }
-- index0[*nb] = i;
-- index1[*nb] = j;
-- (*nb)++;
--}
--
--static GLshort gl2psGetIndex(GLshort i, GLshort num)
--{
-- return (i < num - 1) ? i + 1 : 0;
--}
--
--static GLint gl2psTestSplitPrimitive(GL2PSprimitive *prim, GL2PSplane plane)
--{
-- GLint type = GL2PS_COINCIDENT;
-- GLshort i, j;
-- GLfloat d[5];
--
-- for(i = 0; i < prim->numverts; i++){
-- d[i] = gl2psComparePointPlane(prim->verts[i].xyz, plane);
-- }
--
-- if(prim->numverts < 2){
-- return 0;
-- }
-- else{
-- for(i = 0; i < prim->numverts; i++){
-- j = gl2psGetIndex(i, prim->numverts);
-- if(d[j] > GL2PS_EPSILON){
-- if(type == GL2PS_COINCIDENT) type = GL2PS_IN_BACK_OF;
-- else if(type != GL2PS_IN_BACK_OF) return 1;
-- if(d[i] < -GL2PS_EPSILON) return 1;
-- }
-- else if(d[j] < -GL2PS_EPSILON){
-- if(type == GL2PS_COINCIDENT) type = GL2PS_IN_FRONT_OF;
-- else if(type != GL2PS_IN_FRONT_OF) return 1;
-- if(d[i] > GL2PS_EPSILON) return 1;
-- }
-- }
-- }
-- return 0;
--}
--
--static GLint gl2psSplitPrimitive(GL2PSprimitive *prim, GL2PSplane plane,
-- GL2PSprimitive **front, GL2PSprimitive **back)
--{
-- GLshort i, j, in = 0, out = 0, in0[5], in1[5], out0[5], out1[5];
-- GLint type;
-- GLfloat d[5];
--
-- type = GL2PS_COINCIDENT;
--
-- for(i = 0; i < prim->numverts; i++){
-- d[i] = gl2psComparePointPlane(prim->verts[i].xyz, plane);
-- }
--
-- switch(prim->type){
-- case GL2PS_POINT :
-- if(d[0] > GL2PS_EPSILON) type = GL2PS_IN_BACK_OF;
-- else if(d[0] < -GL2PS_EPSILON) type = GL2PS_IN_FRONT_OF;
-- else type = GL2PS_COINCIDENT;
-- break;
-- default :
-- for(i = 0; i < prim->numverts; i++){
-- j = gl2psGetIndex(i, prim->numverts);
-- if(d[j] > GL2PS_EPSILON){
-- if(type == GL2PS_COINCIDENT) type = GL2PS_IN_BACK_OF;
-- else if(type != GL2PS_IN_BACK_OF) type = GL2PS_SPANNING;
-- if(d[i] < -GL2PS_EPSILON){
-- gl2psAddIndex(in0, in1, &in, i, j);
-- gl2psAddIndex(out0, out1, &out, i, j);
-- type = GL2PS_SPANNING;
-- }
-- gl2psAddIndex(out0, out1, &out, j, -1);
-- }
-- else if(d[j] < -GL2PS_EPSILON){
-- if(type == GL2PS_COINCIDENT) type = GL2PS_IN_FRONT_OF;
-- else if(type != GL2PS_IN_FRONT_OF) type = GL2PS_SPANNING;
-- if(d[i] > GL2PS_EPSILON){
-- gl2psAddIndex(in0, in1, &in, i, j);
-- gl2psAddIndex(out0, out1, &out, i, j);
-- type = GL2PS_SPANNING;
-- }
-- gl2psAddIndex(in0, in1, &in, j, -1);
-- }
-- else{
-- gl2psAddIndex(in0, in1, &in, j, -1);
-- gl2psAddIndex(out0, out1, &out, j, -1);
-- }
-- }
-- break;
-- }
--
-- if(type == GL2PS_SPANNING){
-- *back = (GL2PSprimitive*)gl2psMalloc(sizeof(GL2PSprimitive));
-- *front = (GL2PSprimitive*)gl2psMalloc(sizeof(GL2PSprimitive));
-- gl2psCreateSplitPrimitive(prim, plane, *back, out, out0, out1);
-- gl2psCreateSplitPrimitive(prim, plane, *front, in, in0, in1);
-- }
--
-- return type;
--}
--
--static void gl2psDivideQuad(GL2PSprimitive *quad,
-- GL2PSprimitive **t1, GL2PSprimitive **t2)
--{
-- *t1 = (GL2PSprimitive*)gl2psMalloc(sizeof(GL2PSprimitive));
-- *t2 = (GL2PSprimitive*)gl2psMalloc(sizeof(GL2PSprimitive));
-- (*t1)->type = (*t2)->type = GL2PS_TRIANGLE;
-- (*t1)->numverts = (*t2)->numverts = 3;
-- (*t1)->culled = (*t2)->culled = quad->culled;
-- (*t1)->offset = (*t2)->offset = quad->offset;
-- (*t1)->pattern = (*t2)->pattern = quad->pattern;
-- (*t1)->factor = (*t2)->factor = quad->factor;
-- (*t1)->width = (*t2)->width = quad->width;
-- (*t1)->verts = (GL2PSvertex*)gl2psMalloc(3 * sizeof(GL2PSvertex));
-- (*t2)->verts = (GL2PSvertex*)gl2psMalloc(3 * sizeof(GL2PSvertex));
-- (*t1)->verts[0] = quad->verts[0];
-- (*t1)->verts[1] = quad->verts[1];
-- (*t1)->verts[2] = quad->verts[2];
-- (*t1)->boundary = ((quad->boundary & 1) ? 1 : 0) | ((quad->boundary & 2) ? 2 : 0);
-- (*t2)->verts[0] = quad->verts[0];
-- (*t2)->verts[1] = quad->verts[2];
-- (*t2)->verts[2] = quad->verts[3];
-- (*t2)->boundary = ((quad->boundary & 4) ? 2 : 0) | ((quad->boundary & 4) ? 2 : 0);
--}
--
--static int gl2psCompareDepth(const void *a, const void *b)
--{
-- GL2PSprimitive *q, *w;
-- GLfloat dq = 0.0F, dw = 0.0F, diff;
-- int i;
--
-- q = *(GL2PSprimitive**)a;
-- w = *(GL2PSprimitive**)b;
--
-- for(i = 0; i < q->numverts; i++){
-- dq += q->verts[i].xyz[2];
-- }
-- dq /= (GLfloat)q->numverts;
--
-- for(i = 0; i < w->numverts; i++){
-- dw += w->verts[i].xyz[2];
-- }
-- dw /= (GLfloat)w->numverts;
--
-- diff = dq - dw;
-- if(diff > 0.){
-- return -1;
-- }
-- else if(diff < 0.){
-- return 1;
-- }
-- else{
-- return 0;
-- }
--}
--
--static int gl2psTrianglesFirst(const void *a, const void *b)
--{
-- GL2PSprimitive *q, *w;
--
-- q = *(GL2PSprimitive**)a;
-- w = *(GL2PSprimitive**)b;
-- return (q->type < w->type ? 1 : -1);
--}
--
--static GLint gl2psFindRoot(GL2PSlist *primitives, GL2PSprimitive **root)
--{
-- GLint i, j, count, best = 1000000, index = 0;
-- GL2PSprimitive *prim1, *prim2;
-- GL2PSplane plane;
-- GLint maxp;
--
-- if(!gl2psListNbr(primitives)){
-- gl2psMsg(GL2PS_ERROR, "Cannot fint root in empty primitive list");
-- return 0;
-- }
--
-- *root = *(GL2PSprimitive**)gl2psListPointer(primitives, 0);
--
-- if(gl2ps->options & GL2PS_BEST_ROOT){
-- maxp = gl2psListNbr(primitives);
-- if(maxp > gl2ps->maxbestroot){
-- maxp = gl2ps->maxbestroot;
-- }
-- for(i = 0; i < maxp; i++){
-- prim1 = *(GL2PSprimitive**)gl2psListPointer(primitives, i);
-- gl2psGetPlane(prim1, plane);
-- count = 0;
-- for(j = 0; j < gl2psListNbr(primitives); j++){
-- if(j != i){
-- prim2 = *(GL2PSprimitive**)gl2psListPointer(primitives, j);
-- count += gl2psTestSplitPrimitive(prim2, plane);
-- }
-- if(count > best) break;
-- }
-- if(count < best){
-- best = count;
-- index = i;
-- *root = prim1;
-- if(!count) return index;
-- }
-- }
-- /* if(index) gl2psMsg(GL2PS_INFO, "GL2PS_BEST_ROOT was worth it: %d", index); */
-- return index;
-- }
-- else{
-- return 0;
-- }
--}
--
--static void gl2psFreeImagemap(GL2PSimagemap *list)
--{
-- GL2PSimagemap *next;
-- while(list != NULL){
-- next = list->next;
-- gl2psFree(list->image->pixels);
-- gl2psFree(list->image);
-- gl2psFree(list);
-- list = next;
-- }
--}
--
--static void gl2psFreePrimitive(void *data)
--{
-- GL2PSprimitive *q;
--
-- q = *(GL2PSprimitive**)data;
-- gl2psFree(q->verts);
-- if(q->type == GL2PS_TEXT || q->type == GL2PS_SPECIAL){
-- gl2psFreeText(q->data.text);
-- }
-- else if(q->type == GL2PS_PIXMAP){
-- gl2psFreePixmap(q->data.image);
-- }
-- gl2psFree(q);
--}
--
--static void gl2psAddPrimitiveInList(GL2PSprimitive *prim, GL2PSlist *list)
--{
-- GL2PSprimitive *t1, *t2;
--
-- if(prim->type != GL2PS_QUADRANGLE){
-- gl2psListAdd(list, &prim);
-- }
-- else{
-- gl2psDivideQuad(prim, &t1, &t2);
-- gl2psListAdd(list, &t1);
-- gl2psListAdd(list, &t2);
-- gl2psFreePrimitive(&prim);
-- }
--
--}
--
--static void gl2psFreeBspTree(GL2PSbsptree **tree)
--{
-- if(*tree){
-- if((*tree)->back) gl2psFreeBspTree(&(*tree)->back);
-- if((*tree)->primitives){
-- gl2psListAction((*tree)->primitives, gl2psFreePrimitive);
-- gl2psListDelete((*tree)->primitives);
-- }
-- if((*tree)->front) gl2psFreeBspTree(&(*tree)->front);
-- gl2psFree(*tree);
-- *tree = NULL;
-- }
--}
--
--static GLboolean gl2psGreater(GLfloat f1, GLfloat f2)
--{
-- if(f1 > f2) return GL_TRUE;
-- else return GL_FALSE;
--}
--
--static GLboolean gl2psLess(GLfloat f1, GLfloat f2)
--{
-- if(f1 < f2) return GL_TRUE;
-- else return GL_FALSE;
--}
--
--static void gl2psBuildBspTree(GL2PSbsptree *tree, GL2PSlist *primitives)
--{
-- GL2PSprimitive *prim, *frontprim = NULL, *backprim = NULL;
-- GL2PSlist *frontlist, *backlist;
-- GLint i, index;
--
-- tree->front = NULL;
-- tree->back = NULL;
-- tree->primitives = gl2psListCreate(1, 2, sizeof(GL2PSprimitive*));
-- index = gl2psFindRoot(primitives, &prim);
-- gl2psGetPlane(prim, tree->plane);
-- gl2psAddPrimitiveInList(prim, tree->primitives);
--
-- frontlist = gl2psListCreate(1, 2, sizeof(GL2PSprimitive*));
-- backlist = gl2psListCreate(1, 2, sizeof(GL2PSprimitive*));
--
-- for(i = 0; i < gl2psListNbr(primitives); i++){
-- if(i != index){
-- prim = *(GL2PSprimitive**)gl2psListPointer(primitives,i);
-- switch(gl2psSplitPrimitive(prim, tree->plane, &frontprim, &backprim)){
-- case GL2PS_COINCIDENT:
-- gl2psAddPrimitiveInList(prim, tree->primitives);
-- break;
-- case GL2PS_IN_BACK_OF:
-- gl2psAddPrimitiveInList(prim, backlist);
-- break;
-- case GL2PS_IN_FRONT_OF:
-- gl2psAddPrimitiveInList(prim, frontlist);
-- break;
-- case GL2PS_SPANNING:
-- gl2psAddPrimitiveInList(backprim, backlist);
-- gl2psAddPrimitiveInList(frontprim, frontlist);
-- gl2psFreePrimitive(&prim);
-- break;
-- }
-- }
-- }
--
-- if(gl2psListNbr(tree->primitives)){
-- gl2psListSort(tree->primitives, gl2psTrianglesFirst);
-- }
--
-- if(gl2psListNbr(frontlist)){
-- gl2psListSort(frontlist, gl2psTrianglesFirst);
-- tree->front = (GL2PSbsptree*)gl2psMalloc(sizeof(GL2PSbsptree));
-- gl2psBuildBspTree(tree->front, frontlist);
-- }
-- else{
-- gl2psListDelete(frontlist);
-- }
--
-- if(gl2psListNbr(backlist)){
-- gl2psListSort(backlist, gl2psTrianglesFirst);
-- tree->back = (GL2PSbsptree*)gl2psMalloc(sizeof(GL2PSbsptree));
-- gl2psBuildBspTree(tree->back, backlist);
-- }
-- else{
-- gl2psListDelete(backlist);
-- }
--
-- gl2psListDelete(primitives);
--}
--
--static void gl2psTraverseBspTree(GL2PSbsptree *tree, GL2PSxyz eye, GLfloat epsilon,
-- GLboolean (*compare)(GLfloat f1, GLfloat f2),
-- void (*action)(void *data), int inverse)
--{
-- GLfloat result;
--
-- if(!tree) return;
--
-- result = gl2psComparePointPlane(eye, tree->plane);
--
-- if(GL_TRUE == compare(result, epsilon)){
-- gl2psTraverseBspTree(tree->back, eye, epsilon, compare, action, inverse);
-- if(inverse){
-- gl2psListActionInverse(tree->primitives, action);
-- }
-- else{
-- gl2psListAction(tree->primitives, action);
-- }
-- gl2psTraverseBspTree(tree->front, eye, epsilon, compare, action, inverse);
-- }
-- else if(GL_TRUE == compare(-epsilon, result)){
-- gl2psTraverseBspTree(tree->front, eye, epsilon, compare, action, inverse);
-- if(inverse){
-- gl2psListActionInverse(tree->primitives, action);
-- }
-- else{
-- gl2psListAction(tree->primitives, action);
-- }
-- gl2psTraverseBspTree(tree->back, eye, epsilon, compare, action, inverse);
-- }
-- else{
-- gl2psTraverseBspTree(tree->front, eye, epsilon, compare, action, inverse);
-- gl2psTraverseBspTree(tree->back, eye, epsilon, compare, action, inverse);
-- }
--}
--
--static void gl2psRescaleAndOffset()
--{
-- GL2PSprimitive *prim;
-- GLfloat minZ, maxZ, rangeZ, scaleZ;
-- GLfloat factor, units, area, dZ, dZdX, dZdY, maxdZ;
-- int i, j;
--
-- if(!gl2psListNbr(gl2ps->primitives))
-- return;
--
-- /* get z-buffer range */
-- prim = *(GL2PSprimitive**)gl2psListPointer(gl2ps->primitives, 0);
-- minZ = maxZ = prim->verts[0].xyz[2];
-- for(i = 1; i < prim->numverts; i++){
-- if(prim->verts[i].xyz[2] < minZ) minZ = prim->verts[i].xyz[2];
-- if(prim->verts[i].xyz[2] > maxZ) maxZ = prim->verts[i].xyz[2];
-- }
-- for(i = 1; i < gl2psListNbr(gl2ps->primitives); i++){
-- prim = *(GL2PSprimitive**)gl2psListPointer(gl2ps->primitives, i);
-- for(j = 0; j < prim->numverts; j++){
-- if(prim->verts[j].xyz[2] < minZ) minZ = prim->verts[j].xyz[2];
-- if(prim->verts[j].xyz[2] > maxZ) maxZ = prim->verts[j].xyz[2];
-- }
-- }
-- rangeZ = (maxZ - minZ);
--
-- /* rescale z-buffer coordinate in [0,GL2PS_ZSCALE], to make it of
-- the same order of magnitude as the x and y coordinates */
-- scaleZ = GL2PS_ZERO(rangeZ) ? GL2PS_ZSCALE : (GL2PS_ZSCALE / rangeZ);
-- /* avoid precision loss (we use floats!) */
-- if(scaleZ > 100000.F) scaleZ = 100000.F;
--
-- /* apply offsets */
-- for(i = 0; i < gl2psListNbr(gl2ps->primitives); i++){
-- prim = *(GL2PSprimitive**)gl2psListPointer(gl2ps->primitives, i);
-- for(j = 0; j < prim->numverts; j++){
-- prim->verts[j].xyz[2] = (prim->verts[j].xyz[2] - minZ) * scaleZ;
-- }
-- if((gl2ps->options & GL2PS_SIMPLE_LINE_OFFSET) &&
-- (prim->type == GL2PS_LINE)){
-- if(gl2ps->sort == GL2PS_SIMPLE_SORT){
-- prim->verts[0].xyz[2] -= GL2PS_ZOFFSET_LARGE;
-- prim->verts[1].xyz[2] -= GL2PS_ZOFFSET_LARGE;
-- }
-- else{
-- prim->verts[0].xyz[2] -= GL2PS_ZOFFSET;
-- prim->verts[1].xyz[2] -= GL2PS_ZOFFSET;
-- }
-- }
-- else if(prim->offset && (prim->type == GL2PS_TRIANGLE)){
-- factor = gl2ps->offset[0];
-- units = gl2ps->offset[1];
-- area =
-- (prim->verts[1].xyz[0] - prim->verts[0].xyz[0]) *
-- (prim->verts[2].xyz[1] - prim->verts[1].xyz[1]) -
-- (prim->verts[2].xyz[0] - prim->verts[1].xyz[0]) *
-- (prim->verts[1].xyz[1] - prim->verts[0].xyz[1]);
-- if(!GL2PS_ZERO(area)){
-- dZdX =
-- ((prim->verts[2].xyz[1] - prim->verts[1].xyz[1]) *
-- (prim->verts[1].xyz[2] - prim->verts[0].xyz[2]) -
-- (prim->verts[1].xyz[1] - prim->verts[0].xyz[1]) *
-- (prim->verts[2].xyz[2] - prim->verts[1].xyz[2])) / area;
-- dZdY =
-- ((prim->verts[1].xyz[0] - prim->verts[0].xyz[0]) *
-- (prim->verts[2].xyz[2] - prim->verts[1].xyz[2]) -
-- (prim->verts[2].xyz[0] - prim->verts[1].xyz[0]) *
-- (prim->verts[1].xyz[2] - prim->verts[0].xyz[2])) / area;
-- maxdZ = (GLfloat)sqrt(dZdX * dZdX + dZdY * dZdY);
-- }
-- else{
-- maxdZ = 0.0F;
-- }
-- dZ = factor * maxdZ + units;
-- prim->verts[0].xyz[2] += dZ;
-- prim->verts[1].xyz[2] += dZ;
-- prim->verts[2].xyz[2] += dZ;
-- }
-- }
--}
--
--/*********************************************************************
-- *
-- * 2D sorting routines (for occlusion culling)
-- *
-- *********************************************************************/
--
--static GLint gl2psGetPlaneFromPoints(GL2PSxyz a, GL2PSxyz b, GL2PSplane plane)
--{
-- GLfloat n;
--
-- plane[0] = b[1] - a[1];
-- plane[1] = a[0] - b[0];
-- n = (GLfloat)sqrt(plane[0]*plane[0] + plane[1]*plane[1]);
-- plane[2] = 0.0F;
-- if(!GL2PS_ZERO(n)){
-- plane[0] /= n;
-- plane[1] /= n;
-- plane[3] = -plane[0]*a[0]-plane[1]*a[1];
-- return 1;
-- }
-- else{
-- plane[0] = -1.0F;
-- plane[1] = 0.0F;
-- plane[3] = a[0];
-- return 0;
-- }
--}
--
--static void gl2psFreeBspImageTree(GL2PSbsptree2d **tree)
--{
-- if(*tree){
-- if((*tree)->back) gl2psFreeBspImageTree(&(*tree)->back);
-- if((*tree)->front) gl2psFreeBspImageTree(&(*tree)->front);
-- gl2psFree(*tree);
-- *tree = NULL;
-- }
--}
--
--static GLint gl2psCheckPoint(GL2PSxyz point, GL2PSplane plane)
--{
-- GLfloat pt_dis;
--
-- pt_dis = gl2psComparePointPlane(point, plane);
-- if(pt_dis > GL2PS_EPSILON) return GL2PS_POINT_INFRONT;
-- else if(pt_dis < -GL2PS_EPSILON) return GL2PS_POINT_BACK;
-- else return GL2PS_POINT_COINCIDENT;
--}
--
--static void gl2psAddPlanesInBspTreeImage(GL2PSprimitive *prim,
-- GL2PSbsptree2d **tree)
--{
-- GLint ret = 0;
-- GLint i;
-- GLint offset = 0;
-- GL2PSbsptree2d *head = NULL, *cur = NULL;
--
-- if((*tree == NULL) && (prim->numverts > 2)){
-- /* don't cull if transparent
-- for(i = 0; i < prim->numverts - 1; i++)
-- if(prim->verts[i].rgba[3] < 1.0F) return;
-- */
-- head = (GL2PSbsptree2d*)gl2psMalloc(sizeof(GL2PSbsptree2d));
-- for(i = 0; i < prim->numverts-1; i++){
-- if(!gl2psGetPlaneFromPoints(prim->verts[i].xyz,
-- prim->verts[i+1].xyz,
-- head->plane)){
-- if(prim->numverts-i > 3){
-- offset++;
-- }
-- else{
-- gl2psFree(head);
-- return;
-- }
-- }
-- else{
-- break;
-- }
-- }
-- head->back = NULL;
-- head->front = NULL;
-- for(i = 2+offset; i < prim->numverts; i++){
-- ret = gl2psCheckPoint(prim->verts[i].xyz, head->plane);
-- if(ret != GL2PS_POINT_COINCIDENT) break;
-- }
-- switch(ret){
-- case GL2PS_POINT_INFRONT :
-- cur = head;
-- for(i = 1+offset; i < prim->numverts-1; i++){
-- if(cur->front == NULL){
-- cur->front = (GL2PSbsptree2d*)gl2psMalloc(sizeof(GL2PSbsptree2d));
-- }
-- if(gl2psGetPlaneFromPoints(prim->verts[i].xyz,
-- prim->verts[i+1].xyz,
-- cur->front->plane)){
-- cur = cur->front;
-- cur->front = NULL;
-- cur->back = NULL;
-- }
-- }
-- if(cur->front == NULL){
-- cur->front = (GL2PSbsptree2d*)gl2psMalloc(sizeof(GL2PSbsptree2d));
-- }
-- if(gl2psGetPlaneFromPoints(prim->verts[i].xyz,
-- prim->verts[offset].xyz,
-- cur->front->plane)){
-- cur->front->front = NULL;
-- cur->front->back = NULL;
-- }
-- else{
-- gl2psFree(cur->front);
-- cur->front = NULL;
-- }
-- break;
-- case GL2PS_POINT_BACK :
-- for(i = 0; i < 4; i++){
-- head->plane[i] = -head->plane[i];
-- }
-- cur = head;
-- for(i = 1+offset; i < prim->numverts-1; i++){
-- if(cur->front == NULL){
-- cur->front = (GL2PSbsptree2d*)gl2psMalloc(sizeof(GL2PSbsptree2d));
-- }
-- if(gl2psGetPlaneFromPoints(prim->verts[i+1].xyz,
-- prim->verts[i].xyz,
-- cur->front->plane)){
-- cur = cur->front;
-- cur->front = NULL;
-- cur->back = NULL;
-- }
-- }
-- if(cur->front == NULL){
-- cur->front = (GL2PSbsptree2d*)gl2psMalloc(sizeof(GL2PSbsptree2d));
-- }
-- if(gl2psGetPlaneFromPoints(prim->verts[offset].xyz,
-- prim->verts[i].xyz,
-- cur->front->plane)){
-- cur->front->front = NULL;
-- cur->front->back = NULL;
-- }
-- else{
-- gl2psFree(cur->front);
-- cur->front = NULL;
-- }
-- break;
-- default:
-- gl2psFree(head);
-- return;
-- }
-- (*tree) = head;
-- }
--}
--
--static GLint gl2psCheckPrimitive(GL2PSprimitive *prim, GL2PSplane plane)
--{
-- GLint i;
-- GLint pos;
--
-- pos = gl2psCheckPoint(prim->verts[0].xyz, plane);
-- for(i = 1; i < prim->numverts; i++){
-- pos |= gl2psCheckPoint(prim->verts[i].xyz, plane);
-- if(pos == (GL2PS_POINT_INFRONT | GL2PS_POINT_BACK)) return GL2PS_SPANNING;
-- }
-- if(pos & GL2PS_POINT_INFRONT) return GL2PS_IN_FRONT_OF;
-- else if(pos & GL2PS_POINT_BACK) return GL2PS_IN_BACK_OF;
-- else return GL2PS_COINCIDENT;
--}
--
--static GL2PSprimitive *gl2psCreateSplitPrimitive2D(GL2PSprimitive *parent,
-- GLshort numverts,
-- GL2PSvertex *vertx)
--{
-- GLint i;
-- GL2PSprimitive *child = (GL2PSprimitive*)gl2psMalloc(sizeof(GL2PSprimitive));
--
-- if(parent->type == GL2PS_IMAGEMAP){
-- child->type = GL2PS_IMAGEMAP;
-- child->data.image = parent->data.image;
-- }
-- else {
-- switch(numverts){
-- case 1 : child->type = GL2PS_POINT; break;
-- case 2 : child->type = GL2PS_LINE; break;
-- case 3 : child->type = GL2PS_TRIANGLE; break;
-- case 4 : child->type = GL2PS_QUADRANGLE; break;
-- default: child->type = GL2PS_NO_TYPE; break; /* FIXME */
-- }
-- }
-- child->boundary = 0; /* FIXME: not done! */
-- child->culled = parent->culled;
-- child->offset = parent->offset;
-- child->pattern = parent->pattern;
-- child->factor = parent->factor;
-- child->width = parent->width;
-- child->numverts = numverts;
-- child->verts = (GL2PSvertex*)gl2psMalloc(numverts * sizeof(GL2PSvertex));
-- for(i = 0; i < numverts; i++){
-- child->verts[i] = vertx[i];
-- }
-- return child;
--}
--
--static void gl2psSplitPrimitive2D(GL2PSprimitive *prim,
-- GL2PSplane plane,
-- GL2PSprimitive **front,
-- GL2PSprimitive **back)
--{
-- /* cur will hold the position of the current vertex
-- prev will hold the position of the previous vertex
-- prev0 will hold the position of the vertex number 0
-- v1 and v2 represent the current and previous vertices, respectively
-- flag is set if the current vertex should be checked against the plane */
-- GLint cur = -1, prev = -1, i, v1 = 0, v2 = 0, flag = 1, prev0 = -1;
--
-- /* list of vertices that will go in front and back primitive */
-- GL2PSvertex *front_list = NULL, *back_list = NULL;
--
-- /* number of vertices in front and back list */
-- GLshort front_count = 0, back_count = 0;
--
-- for(i = 0; i <= prim->numverts; i++){
-- v1 = i;
-- if(v1 == prim->numverts){
-- if(prim->numverts < 3) break;
-- v1 = 0;
-- v2 = prim->numverts - 1;
-- cur = prev0;
-- }
-- else if(flag){
-- cur = gl2psCheckPoint(prim->verts[v1].xyz, plane);
-- if(i == 0){
-- prev0 = cur;
-- }
-- }
-- if(((prev == -1) || (prev == cur) || (prev == 0) || (cur == 0)) &&
-- (i < prim->numverts)){
-- if(cur == GL2PS_POINT_INFRONT){
-- front_count++;
-- front_list = (GL2PSvertex*)gl2psRealloc(front_list,
-- sizeof(GL2PSvertex)*front_count);
-- front_list[front_count-1] = prim->verts[v1];
-- }
-- else if(cur == GL2PS_POINT_BACK){
-- back_count++;
-- back_list = (GL2PSvertex*)gl2psRealloc(back_list,
-- sizeof(GL2PSvertex)*back_count);
-- back_list[back_count-1] = prim->verts[v1];
-- }
-- else{
-- front_count++;
-- front_list = (GL2PSvertex*)gl2psRealloc(front_list,
-- sizeof(GL2PSvertex)*front_count);
-- front_list[front_count-1] = prim->verts[v1];
-- back_count++;
-- back_list = (GL2PSvertex*)gl2psRealloc(back_list,
-- sizeof(GL2PSvertex)*back_count);
-- back_list[back_count-1] = prim->verts[v1];
-- }
-- flag = 1;
-- }
-- else if((prev != cur) && (cur != 0) && (prev != 0)){
-- if(v1 != 0){
-- v2 = v1-1;
-- i--;
-- }
-- front_count++;
-- front_list = (GL2PSvertex*)gl2psRealloc(front_list,
-- sizeof(GL2PSvertex)*front_count);
-- gl2psCutEdge(&prim->verts[v2], &prim->verts[v1],
-- plane, &front_list[front_count-1]);
-- back_count++;
-- back_list = (GL2PSvertex*)gl2psRealloc(back_list,
-- sizeof(GL2PSvertex)*back_count);
-- back_list[back_count-1] = front_list[front_count-1];
-- flag = 0;
-- }
-- prev = cur;
-- }
-- *front = gl2psCreateSplitPrimitive2D(prim, front_count, front_list);
-- *back = gl2psCreateSplitPrimitive2D(prim, back_count, back_list);
-- gl2psFree(front_list);
-- gl2psFree(back_list);
--}
--
--static GLint gl2psAddInBspImageTree(GL2PSprimitive *prim, GL2PSbsptree2d **tree)
--{
-- GLint ret = 0;
-- GL2PSprimitive *frontprim = NULL, *backprim = NULL;
--
-- /* FIXME: until we consider the actual extent of text strings and
-- pixmaps, never cull them. Otherwise the whole string/pixmap gets
-- culled as soon as the reference point is hidden */
-- if(prim->type == GL2PS_PIXMAP ||
-- prim->type == GL2PS_TEXT ||
-- prim->type == GL2PS_SPECIAL){
-- return 1;
-- }
--
-- if(*tree == NULL){
-- if((prim->type != GL2PS_IMAGEMAP) && (GL_FALSE == gl2ps->zerosurfacearea)){
-- gl2psAddPlanesInBspTreeImage(gl2ps->primitivetoadd, tree);
-- }
-- return 1;
-- }
-- else{
-- switch(gl2psCheckPrimitive(prim, (*tree)->plane)){
-- case GL2PS_IN_BACK_OF: return gl2psAddInBspImageTree(prim, &(*tree)->back);
-- case GL2PS_IN_FRONT_OF:
-- if((*tree)->front != NULL) return gl2psAddInBspImageTree(prim, &(*tree)->front);
-- else return 0;
-- case GL2PS_SPANNING:
-- gl2psSplitPrimitive2D(prim, (*tree)->plane, &frontprim, &backprim);
-- ret = gl2psAddInBspImageTree(backprim, &(*tree)->back);
-- if((*tree)->front != NULL){
-- if(gl2psAddInBspImageTree(frontprim, &(*tree)->front)){
-- ret = 1;
-- }
-- }
-- gl2psFree(frontprim->verts);
-- gl2psFree(frontprim);
-- gl2psFree(backprim->verts);
-- gl2psFree(backprim);
-- return ret;
-- case GL2PS_COINCIDENT:
-- if((*tree)->back != NULL){
-- gl2ps->zerosurfacearea = GL_TRUE;
-- ret = gl2psAddInBspImageTree(prim, &(*tree)->back);
-- gl2ps->zerosurfacearea = GL_FALSE;
-- if(ret) return ret;
-- }
-- if((*tree)->front != NULL){
-- gl2ps->zerosurfacearea = GL_TRUE;
-- ret = gl2psAddInBspImageTree(prim, &(*tree)->front);
-- gl2ps->zerosurfacearea = GL_FALSE;
-- if(ret) return ret;
-- }
-- if(prim->type == GL2PS_LINE) return 1;
-- else return 0;
-- }
-- }
-- return 0;
--}
--
--static void gl2psAddInImageTree(void *data)
--{
-- GL2PSprimitive *prim = *(GL2PSprimitive **)data;
-- gl2ps->primitivetoadd = prim;
-- if(prim->type == GL2PS_IMAGEMAP && prim->data.image->format == GL2PS_IMAGEMAP_VISIBLE){
-- prim->culled = 1;
-- }
-- else if(!gl2psAddInBspImageTree(prim, &gl2ps->imagetree)){
-- prim->culled = 1;
-- }
-- else if(prim->type == GL2PS_IMAGEMAP){
-- prim->data.image->format = GL2PS_IMAGEMAP_VISIBLE;
-- }
--}
--
--/* Boundary construction */
--
--static void gl2psAddBoundaryInList(GL2PSprimitive *prim, GL2PSlist *list)
--{
-- GL2PSprimitive *b;
-- GLshort i;
-- GL2PSxyz c;
--
-- c[0] = c[1] = c[2] = 0.0F;
-- for(i = 0; i < prim->numverts; i++){
-- c[0] += prim->verts[i].xyz[0];
-- c[1] += prim->verts[i].xyz[1];
-- }
-- c[0] /= prim->numverts;
-- c[1] /= prim->numverts;
--
-- for(i = 0; i < prim->numverts; i++){
-- if(prim->boundary & (GLint)pow(2., i)){
-- b = (GL2PSprimitive*)gl2psMalloc(sizeof(GL2PSprimitive));
-- b->type = GL2PS_LINE;
-- b->offset = prim->offset;
-- b->pattern = prim->pattern;
-- b->factor = prim->factor;
-- b->culled = prim->culled;
-- b->width = prim->width;
-- b->boundary = 0;
-- b->numverts = 2;
-- b->verts = (GL2PSvertex*)gl2psMalloc(2 * sizeof(GL2PSvertex));
--
--#if 0 /* FIXME: need to work on boundary offset... */
-- v[0] = c[0] - prim->verts[i].xyz[0];
-- v[1] = c[1] - prim->verts[i].xyz[1];
-- v[2] = 0.0F;
-- norm = gl2psNorm(v);
-- v[0] /= norm;
-- v[1] /= norm;
-- b->verts[0].xyz[0] = prim->verts[i].xyz[0] +0.1*v[0];
-- b->verts[0].xyz[1] = prim->verts[i].xyz[1] +0.1*v[1];
-- b->verts[0].xyz[2] = prim->verts[i].xyz[2];
-- v[0] = c[0] - prim->verts[gl2psGetIndex(i, prim->numverts)].xyz[0];
-- v[1] = c[1] - prim->verts[gl2psGetIndex(i, prim->numverts)].xyz[1];
-- norm = gl2psNorm(v);
-- v[0] /= norm;
-- v[1] /= norm;
-- b->verts[1].xyz[0] = prim->verts[gl2psGetIndex(i, prim->numverts)].xyz[0] +0.1*v[0];
-- b->verts[1].xyz[1] = prim->verts[gl2psGetIndex(i, prim->numverts)].xyz[1] +0.1*v[1];
-- b->verts[1].xyz[2] = prim->verts[gl2psGetIndex(i, prim->numverts)].xyz[2];
--#else
-- b->verts[0].xyz[0] = prim->verts[i].xyz[0];
-- b->verts[0].xyz[1] = prim->verts[i].xyz[1];
-- b->verts[0].xyz[2] = prim->verts[i].xyz[2];
-- b->verts[1].xyz[0] = prim->verts[gl2psGetIndex(i, prim->numverts)].xyz[0];
-- b->verts[1].xyz[1] = prim->verts[gl2psGetIndex(i, prim->numverts)].xyz[1];
-- b->verts[1].xyz[2] = prim->verts[gl2psGetIndex(i, prim->numverts)].xyz[2];
--#endif
--
-- b->verts[0].rgba[0] = 0.0F;
-- b->verts[0].rgba[1] = 0.0F;
-- b->verts[0].rgba[2] = 0.0F;
-- b->verts[0].rgba[3] = 0.0F;
-- b->verts[1].rgba[0] = 0.0F;
-- b->verts[1].rgba[1] = 0.0F;
-- b->verts[1].rgba[2] = 0.0F;
-- b->verts[1].rgba[3] = 0.0F;
-- gl2psListAdd(list, &b);
-- }
-- }
--
--}
--
--static void gl2psBuildPolygonBoundary(GL2PSbsptree *tree)
--{
-- GLint i;
-- GL2PSprimitive *prim;
--
-- if(!tree) return;
-- gl2psBuildPolygonBoundary(tree->back);
-- for(i = 0; i < gl2psListNbr(tree->primitives); i++){
-- prim = *(GL2PSprimitive**)gl2psListPointer(tree->primitives, i);
-- if(prim->boundary) gl2psAddBoundaryInList(prim, tree->primitives);
-- }
-- gl2psBuildPolygonBoundary(tree->front);
--}
--
--/*********************************************************************
-- *
-- * Feedback buffer parser
-- *
-- *********************************************************************/
--
--static void gl2psAddPolyPrimitive(GLshort type, GLshort numverts,
-- GL2PSvertex *verts, GLint offset,
-- GLushort pattern, GLint factor,
-- GLfloat width, char boundary)
--{
-- GL2PSprimitive *prim;
--
-- prim = (GL2PSprimitive*)gl2psMalloc(sizeof(GL2PSprimitive));
-- prim->type = type;
-- prim->numverts = numverts;
-- prim->verts = (GL2PSvertex*)gl2psMalloc(numverts * sizeof(GL2PSvertex));
-- memcpy(prim->verts, verts, numverts * sizeof(GL2PSvertex));
-- prim->boundary = boundary;
-- prim->offset = offset;
-- prim->pattern = pattern;
-- prim->factor = factor;
-- prim->width = width;
-- prim->culled = 0;
--
-- /* FIXME: here we should have an option to split stretched
-- tris/quads to enhance SIMPLE_SORT */
--
-- gl2psListAdd(gl2ps->primitives, &prim);
--}
--
--static GLint gl2psGetVertex(GL2PSvertex *v, GLfloat *p)
--{
-- GLint i;
--
-- v->xyz[0] = p[0];
-- v->xyz[1] = p[1];
-- v->xyz[2] = p[2];
--
-- if(gl2ps->colormode == GL_COLOR_INDEX && gl2ps->colorsize > 0){
-- i = (GLint)(p[3] + 0.5);
-- v->rgba[0] = gl2ps->colormap[i][0];
-- v->rgba[1] = gl2ps->colormap[i][1];
-- v->rgba[2] = gl2ps->colormap[i][2];
-- v->rgba[3] = gl2ps->colormap[i][3];
-- return 4;
-- }
-- else{
-- v->rgba[0] = p[3];
-- v->rgba[1] = p[4];
-- v->rgba[2] = p[5];
-- v->rgba[3] = p[6];
-- return 7;
-- }
--}
--
--static void gl2psParseFeedbackBuffer(GLint used)
--{
-- char flag;
-- GLushort pattern = 0;
-- GLboolean boundary;
-- GLint i, sizeoffloat, count, v, vtot, offset = 0, factor = 0, auxindex = 0;
-- GLfloat lwidth = 1.0F, psize = 1.0F;
-- GLfloat *current;
-- GL2PSvertex vertices[3];
-- GL2PSprimitive *prim;
-- GL2PSimagemap *node;
--
-- current = gl2ps->feedback;
-- boundary = gl2ps->boundary = GL_FALSE;
--
-- while(used > 0){
--
-- if(GL_TRUE == boundary) gl2ps->boundary = GL_TRUE;
--
-- switch((GLint)*current){
-- case GL_POINT_TOKEN :
-- current ++;
-- used --;
-- i = gl2psGetVertex(&vertices[0], current);
-- current += i;
-- used -= i;
-- gl2psAddPolyPrimitive(GL2PS_POINT, 1, vertices, 0,
-- pattern, factor, psize, 0);
-- break;
-- case GL_LINE_TOKEN :
-- case GL_LINE_RESET_TOKEN :
-- current ++;
-- used --;
-- i = gl2psGetVertex(&vertices[0], current);
-- current += i;
-- used -= i;
-- i = gl2psGetVertex(&vertices[1], current);
-- current += i;
-- used -= i;
-- gl2psAddPolyPrimitive(GL2PS_LINE, 2, vertices, 0,
-- pattern, factor, lwidth, 0);
-- break;
-- case GL_POLYGON_TOKEN :
-- count = (GLint)current[1];
-- current += 2;
-- used -= 2;
-- v = vtot = 0;
-- while(count > 0 && used > 0){
-- i = gl2psGetVertex(&vertices[v], current);
-- gl2psAdaptVertexForBlending(&vertices[v]);
-- current += i;
-- used -= i;
-- count --;
-- vtot++;
-- if(v == 2){
-- if(GL_TRUE == boundary){
-- if(!count && vtot == 2) flag = 1|2|4;
-- else if(!count) flag = 2|4;
-- else if(vtot == 2) flag = 1|2;
-- else flag = 2;
-- }
-- else
-- flag = 0;
-- gl2psAddPolyPrimitive(GL2PS_TRIANGLE, 3, vertices, offset,
-- pattern, factor, 1, flag);
-- vertices[1] = vertices[2];
-- }
-- else
-- v ++;
-- }
-- break;
-- case GL_BITMAP_TOKEN :
-- case GL_DRAW_PIXEL_TOKEN :
-- case GL_COPY_PIXEL_TOKEN :
-- current ++;
-- used --;
-- i = gl2psGetVertex(&vertices[0], current);
-- current += i;
-- used -= i;
-- break;
-- case GL_PASS_THROUGH_TOKEN :
-- switch((GLint)current[1]){
-- case GL2PS_BEGIN_OFFSET_TOKEN : offset = 1; break;
-- case GL2PS_END_OFFSET_TOKEN : offset = 0; break;
-- case GL2PS_BEGIN_BOUNDARY_TOKEN : boundary = GL_TRUE; break;
-- case GL2PS_END_BOUNDARY_TOKEN : boundary = GL_FALSE; break;
-- case GL2PS_END_STIPPLE_TOKEN : pattern = factor = 0; break;
-- case GL2PS_BEGIN_BLEND_TOKEN : gl2ps->blending = GL_TRUE; break;
-- case GL2PS_END_BLEND_TOKEN : gl2ps->blending = GL_FALSE; break;
-- case GL2PS_BEGIN_STIPPLE_TOKEN :
-- current += 2;
-- used -= 2;
-- pattern = (GLushort)current[1];
-- current += 2;
-- used -= 2;
-- factor = (GLint)current[1];
-- break;
-- case GL2PS_SRC_BLEND_TOKEN :
-- current += 2;
-- used -= 2;
-- gl2ps->blendfunc[0] = (GLint)current[1];
-- break;
-- case GL2PS_DST_BLEND_TOKEN :
-- current += 2;
-- used -= 2;
-- gl2ps->blendfunc[1] = (GLint)current[1];
-- break;
-- case GL2PS_POINT_SIZE_TOKEN :
-- current += 2;
-- used -= 2;
-- psize = current[1];
-- break;
-- case GL2PS_LINE_WIDTH_TOKEN :
-- current += 2;
-- used -= 2;
-- lwidth = current[1];
-- break;
-- case GL2PS_IMAGEMAP_TOKEN :
-- prim = (GL2PSprimitive *)gl2psMalloc(sizeof(GL2PSprimitive));
-- prim->type = GL2PS_IMAGEMAP;
-- prim->boundary = 0;
-- prim->numverts = 4;
-- prim->verts = (GL2PSvertex *)gl2psMalloc(4 * sizeof(GL2PSvertex));
-- prim->culled = 0;
-- prim->offset = 0;
-- prim->pattern = 0;
-- prim->factor = 0;
-- prim->width = 1;
--
-- node = (GL2PSimagemap*)gl2psMalloc(sizeof(GL2PSimagemap));
-- node->image = (GL2PSimage*)gl2psMalloc(sizeof(GL2PSimage));
-- node->image->type = 0;
-- node->image->format = 0;
-- node->next = NULL;
--
-- if(gl2ps->imagemap_head == NULL)
-- gl2ps->imagemap_head = node;
-- else
-- gl2ps->imagemap_tail->next = node;
-- gl2ps->imagemap_tail = node;
-- prim->data.image = node->image;
--
-- current += 2; used -= 2;
-- i = gl2psGetVertex(&prim->verts[0], ¤t[1]);
-- current += i; used -= i;
--
-- node->image->width = (GLint)current[2];
-- current += 2; used -= 2;
-- node->image->height = (GLint)current[2];
-- prim->verts[0].xyz[0] = prim->verts[0].xyz[0] - (int)(node->image->width / 2) + 0.5F;
-- prim->verts[0].xyz[1] = prim->verts[0].xyz[1] - (int)(node->image->height / 2) + 0.5F;
-- for(i = 1; i < 4; i++){
-- for(v = 0; v < 3; v++){
-- prim->verts[i].xyz[v] = prim->verts[0].xyz[v];
-- prim->verts[i].rgba[v] = prim->verts[0].rgba[v];
-- }
-- prim->verts[i].rgba[v] = prim->verts[0].rgba[v];
-- }
-- prim->verts[1].xyz[0] = prim->verts[1].xyz[0] + node->image->width;
-- prim->verts[2].xyz[0] = prim->verts[1].xyz[0];
-- prim->verts[2].xyz[1] = prim->verts[2].xyz[1] + node->image->height;
-- prim->verts[3].xyz[1] = prim->verts[2].xyz[1];
--
-- sizeoffloat = sizeof(GLfloat);
-- v = 2 * sizeoffloat;
-- vtot = node->image->height + node->image->height *
-- ((node->image->width - 1) / 8);
-- node->image->pixels = (GLfloat*)gl2psMalloc(v + vtot);
-- node->image->pixels[0] = prim->verts[0].xyz[0];
-- node->image->pixels[1] = prim->verts[0].xyz[1];
--
-- for(i = 0; i < vtot; i += sizeoffloat){
-- current += 2; used -= 2;
-- if((vtot - i) >= 4)
-- memcpy(&(((char*)(node->image->pixels))[i + v]), &(current[2]), sizeoffloat);
-- else
-- memcpy(&(((char*)(node->image->pixels))[i + v]), &(current[2]), vtot - i);
-- }
-- current++; used--;
-- gl2psListAdd(gl2ps->primitives, &prim);
-- break;
-- case GL2PS_DRAW_PIXELS_TOKEN :
-- case GL2PS_TEXT_TOKEN :
-- if(auxindex < gl2psListNbr(gl2ps->auxprimitives))
-- gl2psListAdd(gl2ps->primitives,
-- gl2psListPointer(gl2ps->auxprimitives, auxindex++));
-- else
-- gl2psMsg(GL2PS_ERROR, "Wrong number of auxiliary tokens in buffer");
-- break;
-- }
-- current += 2;
-- used -= 2;
-- break;
-- default :
-- gl2psMsg(GL2PS_WARNING, "Unknown token in buffer");
-- current ++;
-- used --;
-- break;
-- }
-- }
--
-- gl2psListReset(gl2ps->auxprimitives);
--}
--
--/*********************************************************************
-- *
-- * PostScript routines
-- *
-- *********************************************************************/
--
--static void gl2psWriteByte(unsigned char byte)
--{
-- unsigned char h = byte / 16;
-- unsigned char l = byte % 16;
-- gl2psPrintf("%x%x", h, l);
--}
--
--static void gl2psPrintPostScriptPixmap(GLfloat x, GLfloat y, GL2PSimage *im)
--{
-- GLuint nbhex, nbyte, nrgb, nbits;
-- GLuint row, col, ibyte, icase;
-- GLfloat dr, dg, db, fgrey;
-- unsigned char red = 0, green = 0, blue = 0, b, grey;
-- GLuint width = (GLuint)im->width;
-- GLuint height = (GLuint)im->height;
--
-- /* FIXME: should we define an option for these? Or just keep the
-- 8-bit per component case? */
-- int greyscale = 0; /* set to 1 to output greyscale image */
-- int nbit = 8; /* number of bits per color compoment (2, 4 or 8) */
--
-- if((width <= 0) || (height <= 0)) return;
--
-- gl2psPrintf("gsave\n");
-- gl2psPrintf("%.2f %.2f translate\n", x, y);
-- gl2psPrintf("%d %d scale\n", width, height);
--
-- if(greyscale){ /* greyscale */
-- gl2psPrintf("/picstr %d string def\n", width);
-- gl2psPrintf("%d %d %d\n", width, height, 8);
-- gl2psPrintf("[ %d 0 0 -%d 0 %d ]\n", width, height, height);
-- gl2psPrintf("{ currentfile picstr readhexstring pop }\n");
-- gl2psPrintf("image\n");
-- for(row = 0; row < height; row++){
-- for(col = 0; col < width; col++){
-- gl2psGetRGB(im, col, row, &dr, &dg, &db);
-- fgrey = (0.30F * dr + 0.59F * dg + 0.11F * db);
-- grey = (unsigned char)(255. * fgrey);
-- gl2psWriteByte(grey);
-- }
-- gl2psPrintf("\n");
-- }
-- nbhex = width * height * 2;
-- gl2psPrintf("%%%% nbhex digit :%d\n", nbhex);
-- }
-- else if(nbit == 2){ /* color, 2 bits for r and g and b; rgbs following each other */
-- nrgb = width * 3;
-- nbits = nrgb * nbit;
-- nbyte = nbits / 8;
-- if((nbyte * 8) != nbits) nbyte++;
-- gl2psPrintf("/rgbstr %d string def\n", nbyte);
-- gl2psPrintf("%d %d %d\n", width, height, nbit);
-- gl2psPrintf("[ %d 0 0 -%d 0 %d ]\n", width, height, height);
-- gl2psPrintf("{ currentfile rgbstr readhexstring pop }\n");
-- gl2psPrintf("false 3\n");
-- gl2psPrintf("colorimage\n");
-- for(row = 0; row < height; row++){
-- icase = 1;
-- col = 0;
-- b = 0;
-- for(ibyte = 0; ibyte < nbyte; ibyte++){
-- if(icase == 1) {
-- if(col < width) {
-- gl2psGetRGB(im, col, row, &dr, &dg, &db);
-- }
-- else {
-- dr = dg = db = 0;
-- }
-- col++;
-- red = (unsigned char)(3. * dr);
-- green = (unsigned char)(3. * dg);
-- blue = (unsigned char)(3. * db);
-- b = red;
-- b = (b<<2) + green;
-- b = (b<<2) + blue;
-- if(col < width) {
-- gl2psGetRGB(im, col, row, &dr, &dg, &db);
-- }
-- else {
-- dr = dg = db = 0;
-- }
-- col++;
-- red = (unsigned char)(3. * dr);
-- green = (unsigned char)(3. * dg);
-- blue = (unsigned char)(3. * db);
-- b = (b<<2) + red;
-- gl2psWriteByte(b);
-- b = 0;
-- icase++;
-- }
-- else if(icase == 2) {
-- b = green;
-- b = (b<<2) + blue;
-- if(col < width) {
-- gl2psGetRGB(im, col, row, &dr, &dg, &db);
-- }
-- else {
-- dr = dg = db = 0;
-- }
-- col++;
-- red = (unsigned char)(3. * dr);
-- green = (unsigned char)(3. * dg);
-- blue = (unsigned char)(3. * db);
-- b = (b<<2) + red;
-- b = (b<<2) + green;
-- gl2psWriteByte(b);
-- b = 0;
-- icase++;
-- }
-- else if(icase == 3) {
-- b = blue;
-- if(col < width) {
-- gl2psGetRGB(im, col, row, &dr, &dg, &db);
-- }
-- else {
-- dr = dg = db = 0;
-- }
-- col++;
-- red = (unsigned char)(3. * dr);
-- green = (unsigned char)(3. * dg);
-- blue = (unsigned char)(3. * db);
-- b = (b<<2) + red;
-- b = (b<<2) + green;
-- b = (b<<2) + blue;
-- gl2psWriteByte(b);
-- b = 0;
-- icase = 1;
-- }
-- }
-- gl2psPrintf("\n");
-- }
-- }
-- else if(nbit == 4){ /* color, 4 bits for r and g and b; rgbs following each other */
-- nrgb = width * 3;
-- nbits = nrgb * nbit;
-- nbyte = nbits / 8;
-- if((nbyte * 8) != nbits) nbyte++;
-- gl2psPrintf("/rgbstr %d string def\n", nbyte);
-- gl2psPrintf("%d %d %d\n", width, height, nbit);
-- gl2psPrintf("[ %d 0 0 -%d 0 %d ]\n", width, height, height);
-- gl2psPrintf("{ currentfile rgbstr readhexstring pop }\n");
-- gl2psPrintf("false 3\n");
-- gl2psPrintf("colorimage\n");
-- for(row = 0; row < height; row++){
-- col = 0;
-- icase = 1;
-- for(ibyte = 0; ibyte < nbyte; ibyte++){
-- if(icase == 1) {
-- if(col < width) {
-- gl2psGetRGB(im, col, row, &dr, &dg, &db);
-- }
-- else {
-- dr = dg = db = 0;
-- }
-- col++;
-- red = (unsigned char)(15. * dr);
-- green = (unsigned char)(15. * dg);
-- gl2psPrintf("%x%x", red, green);
-- icase++;
-- }
-- else if(icase == 2) {
-- blue = (unsigned char)(15. * db);
-- if(col < width) {
-- gl2psGetRGB(im, col, row, &dr, &dg, &db);
-- }
-- else {
-- dr = dg = db = 0;
-- }
-- col++;
-- red = (unsigned char)(15. * dr);
-- gl2psPrintf("%x%x", blue, red);
-- icase++;
-- }
-- else if(icase == 3) {
-- green = (unsigned char)(15. * dg);
-- blue = (unsigned char)(15. * db);
-- gl2psPrintf("%x%x", green, blue);
-- icase = 1;
-- }
-- }
-- gl2psPrintf("\n");
-- }
-- }
-- else{ /* 8 bit for r and g and b */
-- nbyte = width * 3;
-- gl2psPrintf("/rgbstr %d string def\n", nbyte);
-- gl2psPrintf("%d %d %d\n", width, height, 8);
-- gl2psPrintf("[ %d 0 0 -%d 0 %d ]\n", width, height, height);
-- gl2psPrintf("{ currentfile rgbstr readhexstring pop }\n");
-- gl2psPrintf("false 3\n");
-- gl2psPrintf("colorimage\n");
-- for(row = 0; row < height; row++){
-- for(col = 0; col < width; col++){
-- gl2psGetRGB(im, col, row, &dr, &dg, &db);
-- red = (unsigned char)(255. * dr);
-- gl2psWriteByte(red);
-- green = (unsigned char)(255. * dg);
-- gl2psWriteByte(green);
-- blue = (unsigned char)(255. * db);
-- gl2psWriteByte(blue);
-- }
-- gl2psPrintf("\n");
-- }
-- }
--
-- gl2psPrintf("grestore\n");
--}
--
--static void gl2psPrintPostScriptImagemap(GLfloat x, GLfloat y,
-- GLsizei width, GLsizei height,
-- const unsigned char *imagemap){
-- int i, size;
--
-- if((width <= 0) || (height <= 0)) return;
--
-- size = height + height * (width - 1) / 8;
--
-- gl2psPrintf("gsave\n");
-- gl2psPrintf("%.2f %.2f translate\n", x, y);
-- gl2psPrintf("%d %d scale\n%d %d\ntrue\n", width, height,width, height);
-- gl2psPrintf("[ %d 0 0 -%d 0 %d ] {<", width, height);
-- for(i = 0; i < size; i++){
-- gl2psWriteByte(*imagemap);
-- imagemap++;
-- }
-- gl2psPrintf(">} imagemask\ngrestore\n");
--}
--
--static void gl2psPrintPostScriptHeader(void)
--{
-- time_t now;
--
-- /* Since compression is not part of the PostScript standard,
-- compressed PostScript files are just gzipped PostScript files
-- ("ps.gz" or "eps.gz") */
-- gl2psPrintGzipHeader();
--
-- time(&now);
--
-- if(gl2ps->format == GL2PS_PS){
-- gl2psPrintf("%%!PS-Adobe-3.0\n");
-- }
-- else{
-- gl2psPrintf("%%!PS-Adobe-3.0 EPSF-3.0\n");
-- }
--
-- gl2psPrintf("%%%%Title: %s\n"
-- "%%%%Creator: GL2PS %d.%d.%d%s, %s\n"
-- "%%%%For: %s\n"
-- "%%%%CreationDate: %s"
-- "%%%%LanguageLevel: 3\n"
-- "%%%%DocumentData: Clean7Bit\n"
-- "%%%%Pages: 1\n",
-- gl2ps->title, GL2PS_MAJOR_VERSION, GL2PS_MINOR_VERSION,
-- GL2PS_PATCH_VERSION, GL2PS_EXTRA_VERSION, GL2PS_COPYRIGHT,
-- gl2ps->producer, ctime(&now));
--
-- if(gl2ps->format == GL2PS_PS){
-- gl2psPrintf("%%%%Orientation: %s\n"
-- "%%%%DocumentMedia: Default %d %d 0 () ()\n",
-- (gl2ps->options & GL2PS_LANDSCAPE) ? "Landscape" : "Portrait",
-- (gl2ps->options & GL2PS_LANDSCAPE) ? (int)gl2ps->viewport[3] :
-- (int)gl2ps->viewport[2],
-- (gl2ps->options & GL2PS_LANDSCAPE) ? (int)gl2ps->viewport[2] :
-- (int)gl2ps->viewport[3]);
-- }
--
-- gl2psPrintf("%%%%BoundingBox: %d %d %d %d\n"
-- "%%%%EndComments\n",
-- (gl2ps->options & GL2PS_LANDSCAPE) ? (int)gl2ps->viewport[1] :
-- (int)gl2ps->viewport[0],
-- (gl2ps->options & GL2PS_LANDSCAPE) ? (int)gl2ps->viewport[0] :
-- (int)gl2ps->viewport[1],
-- (gl2ps->options & GL2PS_LANDSCAPE) ? (int)gl2ps->viewport[3] :
-- (int)gl2ps->viewport[2],
-- (gl2ps->options & GL2PS_LANDSCAPE) ? (int)gl2ps->viewport[2] :
-- (int)gl2ps->viewport[3]);
--
-- /* RGB color: r g b C (replace C by G in output to change from rgb to gray)
-- Grayscale: r g b G
-- Font choose: size fontname FC
-- Text string: (string) x y size fontname S??
-- Rotated text string: (string) angle x y size fontname S??R
-- Point primitive: x y size P
-- Line width: width W
-- Line start: x y LS
-- Line joining last point: x y L
-- Line end: x y LE
-- Flat-shaded triangle: x3 y3 x2 y2 x1 y1 T
-- Smooth-shaded triangle: x3 y3 r3 g3 b3 x2 y2 r2 g2 b2 x1 y1 r1 g1 b1 ST */
--
-- gl2psPrintf("%%%%BeginProlog\n"
-- "/gl2psdict 64 dict def gl2psdict begin\n"
-- "0 setlinecap 0 setlinejoin\n"
-- "/tryPS3shading %s def %% set to false to force subdivision\n"
-- "/rThreshold %g def %% red component subdivision threshold\n"
-- "/gThreshold %g def %% green component subdivision threshold\n"
-- "/bThreshold %g def %% blue component subdivision threshold\n",
-- (gl2ps->options & GL2PS_NO_PS3_SHADING) ? "false" : "true",
-- gl2ps->threshold[0], gl2ps->threshold[1], gl2ps->threshold[2]);
--
-- gl2psPrintf("/BD { bind def } bind def\n"
-- "/C { setrgbcolor } BD\n"
-- "/G { 0.082 mul exch 0.6094 mul add exch 0.3086 mul add neg 1.0 add setgray } BD\n"
-- "/W { setlinewidth } BD\n");
--
-- gl2psPrintf("/FC { findfont exch /SH exch def SH scalefont setfont } BD\n"
-- "/SW { dup stringwidth pop } BD\n"
-- "/S { FC moveto show } BD\n"
-- "/SBC{ FC moveto SW -2 div 0 rmoveto show } BD\n"
-- "/SBR{ FC moveto SW neg 0 rmoveto show } BD\n"
-- "/SCL{ FC moveto 0 SH -2 div rmoveto show } BD\n"
-- "/SCC{ FC moveto SW -2 div SH -2 div rmoveto show } BD\n"
-- "/SCR{ FC moveto SW neg SH -2 div rmoveto show } BD\n"
-- "/STL{ FC moveto 0 SH neg rmoveto show } BD\n"
-- "/STC{ FC moveto SW -2 div SH neg rmoveto show } BD\n"
-- "/STR{ FC moveto SW neg SH neg rmoveto show } BD\n");
--
-- /* rotated text routines: same nameanem with R appended */
--
-- gl2psPrintf("/FCT { FC translate 0 0 } BD\n"
-- "/SR { gsave FCT moveto rotate show grestore } BD\n"
-- "/SBCR{ gsave FCT moveto rotate SW -2 div 0 rmoveto show grestore } BD\n"
-- "/SBRR{ gsave FCT moveto rotate SW neg 0 rmoveto show grestore } BD\n"
-- "/SCLR{ gsave FCT moveto rotate 0 SH -2 div rmoveto show grestore} BD\n");
-- gl2psPrintf("/SCCR{ gsave FCT moveto rotate SW -2 div SH -2 div rmoveto show grestore} BD\n"
-- "/SCRR{ gsave FCT moveto rotate SW neg SH -2 div rmoveto show grestore} BD\n"
-- "/STLR{ gsave FCT moveto rotate 0 SH neg rmoveto show grestore } BD\n"
-- "/STCR{ gsave FCT moveto rotate SW -2 div SH neg rmoveto show grestore } BD\n"
-- "/STRR{ gsave FCT moveto rotate SW neg SH neg rmoveto show grestore } BD\n");
--
-- gl2psPrintf("/P { newpath 0.0 360.0 arc closepath fill } BD\n"
-- "/LS { newpath moveto } BD\n"
-- "/L { lineto } BD\n"
-- "/LE { lineto stroke } BD\n"
-- "/T { newpath moveto lineto lineto closepath fill } BD\n");
--
-- /* Smooth-shaded triangle with PostScript level 3 shfill operator:
-- x3 y3 r3 g3 b3 x2 y2 r2 g2 b2 x1 y1 r1 g1 b1 STshfill */
--
-- gl2psPrintf("/STshfill {\n"
-- " /b1 exch def /g1 exch def /r1 exch def /y1 exch def /x1 exch def\n"
-- " /b2 exch def /g2 exch def /r2 exch def /y2 exch def /x2 exch def\n"
-- " /b3 exch def /g3 exch def /r3 exch def /y3 exch def /x3 exch def\n"
-- " gsave << /ShadingType 4 /ColorSpace [/DeviceRGB]\n"
-- " /DataSource [ 0 x1 y1 r1 g1 b1 0 x2 y2 r2 g2 b2 0 x3 y3 r3 g3 b3 ] >>\n"
-- " shfill grestore } BD\n");
--
-- /* Flat-shaded triangle with middle color:
-- x3 y3 r3 g3 b3 x2 y2 r2 g2 b2 x1 y1 r1 g1 b1 Tm */
--
-- gl2psPrintf(/* stack : x3 y3 r3 g3 b3 x2 y2 r2 g2 b2 x1 y1 r1 g1 b1 */
-- "/Tm { 3 -1 roll 8 -1 roll 13 -1 roll add add 3 div\n" /* r = (r1+r2+r3)/3 */
-- /* stack : x3 y3 g3 b3 x2 y2 g2 b2 x1 y1 g1 b1 r */
-- " 3 -1 roll 7 -1 roll 11 -1 roll add add 3 div\n" /* g = (g1+g2+g3)/3 */
-- /* stack : x3 y3 b3 x2 y2 b2 x1 y1 b1 r g b */
-- " 3 -1 roll 6 -1 roll 9 -1 roll add add 3 div" /* b = (b1+b2+b3)/3 */
-- /* stack : x3 y3 x2 y2 x1 y1 r g b */
-- " C T } BD\n");
--
-- /* Split triangle in four sub-triangles (at sides middle points) and call the
-- STnoshfill procedure on each, interpolating the colors in RGB space:
-- x3 y3 r3 g3 b3 x2 y2 r2 g2 b2 x1 y1 r1 g1 b1 STsplit
-- (in procedure comments key: (Vi) = xi yi ri gi bi) */
--
-- gl2psPrintf("/STsplit {\n"
-- " 4 index 15 index add 0.5 mul\n" /* x13 = (x1+x3)/2 */
-- " 4 index 15 index add 0.5 mul\n" /* y13 = (y1+y3)/2 */
-- " 4 index 15 index add 0.5 mul\n" /* r13 = (r1+r3)/2 */
-- " 4 index 15 index add 0.5 mul\n" /* g13 = (g1+g3)/2 */
-- " 4 index 15 index add 0.5 mul\n" /* b13 = (b1+b3)/2 */
-- " 5 copy 5 copy 25 15 roll\n");
--
-- /* at his point, stack = (V3) (V13) (V13) (V13) (V2) (V1) */
--
-- gl2psPrintf(" 9 index 30 index add 0.5 mul\n" /* x23 = (x2+x3)/2 */
-- " 9 index 30 index add 0.5 mul\n" /* y23 = (y2+y3)/2 */
-- " 9 index 30 index add 0.5 mul\n" /* r23 = (r2+r3)/2 */
-- " 9 index 30 index add 0.5 mul\n" /* g23 = (g2+g3)/2 */
-- " 9 index 30 index add 0.5 mul\n" /* b23 = (b2+b3)/2 */
-- " 5 copy 5 copy 35 5 roll 25 5 roll 15 5 roll\n");
--
-- /* stack = (V3) (V13) (V23) (V13) (V23) (V13) (V23) (V2) (V1) */
--
-- gl2psPrintf(" 4 index 10 index add 0.5 mul\n" /* x12 = (x1+x2)/2 */
-- " 4 index 10 index add 0.5 mul\n" /* y12 = (y1+y2)/2 */
-- " 4 index 10 index add 0.5 mul\n" /* r12 = (r1+r2)/2 */
-- " 4 index 10 index add 0.5 mul\n" /* g12 = (g1+g2)/2 */
-- " 4 index 10 index add 0.5 mul\n" /* b12 = (b1+b2)/2 */
-- " 5 copy 5 copy 40 5 roll 25 5 roll 15 5 roll 25 5 roll\n");
--
-- /* stack = (V3) (V13) (V23) (V13) (V12) (V23) (V13) (V1) (V12) (V23) (V12) (V2) */
--
-- gl2psPrintf(" STnoshfill STnoshfill STnoshfill STnoshfill } BD\n");
--
-- /* Gouraud shaded triangle using recursive subdivision until the difference
-- between corner colors does not exceed the thresholds:
-- x3 y3 r3 g3 b3 x2 y2 r2 g2 b2 x1 y1 r1 g1 b1 STnoshfill */
--
-- gl2psPrintf("/STnoshfill {\n"
-- " 2 index 8 index sub abs rThreshold gt\n" /* |r1-r2|>rth */
-- " { STsplit }\n"
-- " { 1 index 7 index sub abs gThreshold gt\n" /* |g1-g2|>gth */
-- " { STsplit }\n"
-- " { dup 6 index sub abs bThreshold gt\n" /* |b1-b2|>bth */
-- " { STsplit }\n"
-- " { 2 index 13 index sub abs rThreshold gt\n" /* |r1-r3|>rht */
-- " { STsplit }\n"
-- " { 1 index 12 index sub abs gThreshold gt\n" /* |g1-g3|>gth */
-- " { STsplit }\n"
-- " { dup 11 index sub abs bThreshold gt\n" /* |b1-b3|>bth */
-- " { STsplit }\n"
-- " { 7 index 13 index sub abs rThreshold gt\n"); /* |r2-r3|>rht */
-- gl2psPrintf(" { STsplit }\n"
-- " { 6 index 12 index sub abs gThreshold gt\n" /* |g2-g3|>gth */
-- " { STsplit }\n"
-- " { 5 index 11 index sub abs bThreshold gt\n" /* |b2-b3|>bth */
-- " { STsplit }\n"
-- " { Tm }\n" /* all colors sufficiently similar */
-- " ifelse }\n"
-- " ifelse }\n"
-- " ifelse }\n"
-- " ifelse }\n"
-- " ifelse }\n"
-- " ifelse }\n"
-- " ifelse }\n"
-- " ifelse }\n"
-- " ifelse } BD\n");
--
-- gl2psPrintf("tryPS3shading\n"
-- "{ /shfill where\n"
-- " { /ST { STshfill } BD }\n"
-- " { /ST { STnoshfill } BD }\n"
-- " ifelse }\n"
-- "{ /ST { STnoshfill } BD }\n"
-- "ifelse\n");
--
-- gl2psPrintf("end\n"
-- "%%%%EndProlog\n"
-- "%%%%BeginSetup\n"
-- "/DeviceRGB setcolorspace\n"
-- "gl2psdict begin\n"
-- "%%%%EndSetup\n"
-- "%%%%Page: 1 1\n"
-- "%%%%BeginPageSetup\n");
--
-- if(gl2ps->options & GL2PS_LANDSCAPE){
-- gl2psPrintf("%d 0 translate 90 rotate\n",
-- (int)gl2ps->viewport[3]);
-- }
--
-- gl2psPrintf("%%%%EndPageSetup\n"
-- "mark\n"
-- "gsave\n"
-- "1.0 1.0 scale\n");
--
-- if(gl2ps->options & GL2PS_DRAW_BACKGROUND){
-- gl2psPrintf("%g %g %g C\n"
-- "newpath %d %d moveto %d %d lineto %d %d lineto %d %d lineto\n"
-- "closepath fill\n",
-- gl2ps->bgcolor[0], gl2ps->bgcolor[1], gl2ps->bgcolor[2],
-- (int)gl2ps->viewport[0], (int)gl2ps->viewport[1], (int)gl2ps->viewport[2],
-- (int)gl2ps->viewport[1], (int)gl2ps->viewport[2], (int)gl2ps->viewport[3],
-- (int)gl2ps->viewport[0], (int)gl2ps->viewport[3]);
-- }
--}
--
--static void gl2psPrintPostScriptColor(GL2PSrgba rgba)
--{
-- if(!gl2psSameColor(gl2ps->lastrgba, rgba)){
-- gl2psSetLastColor(rgba);
-- gl2psPrintf("%g %g %g C\n", rgba[0], rgba[1], rgba[2]);
-- }
--}
--
--static void gl2psResetPostScriptColor(void)
--{
-- gl2ps->lastrgba[0] = gl2ps->lastrgba[1] = gl2ps->lastrgba[2] = -1.;
--}
--
--static void gl2psEndPostScriptLine(void)
--{
-- int i;
-- if(gl2ps->lastvertex.rgba[0] >= 0.){
-- gl2psPrintf("%g %g LE\n", gl2ps->lastvertex.xyz[0], gl2ps->lastvertex.xyz[1]);
-- for(i = 0; i < 3; i++)
-- gl2ps->lastvertex.xyz[i] = -1.;
-- for(i = 0; i < 4; i++)
-- gl2ps->lastvertex.rgba[i] = -1.;
-- }
--}
--
--static void gl2psParseStipplePattern(GLushort pattern, GLint factor,
-- int *nb, int array[10])
--{
-- int i, n;
-- int on[8] = {0, 0, 0, 0, 0, 0, 0, 0};
-- int off[8] = {0, 0, 0, 0, 0, 0, 0, 0};
-- char tmp[16];
--
-- /* extract the 16 bits from the OpenGL stipple pattern */
-- for(n = 15; n >= 0; n--){
-- tmp[n] = (char)(pattern & 0x01);
-- pattern >>= 1;
-- }
-- /* compute the on/off pixel sequence */
-- n = 0;
-- for(i = 0; i < 8; i++){
-- while(n < 16 && !tmp[n]){ off[i]++; n++; }
-- while(n < 16 && tmp[n]){ on[i]++; n++; }
-- if(n >= 15){ i++; break; }
-- }
--
-- /* store the on/off array from right to left, starting with off
-- pixels. The PostScript specification allows for at most 11
-- elements in the on/off array, so we limit ourselves to 5 on/off
-- couples (our longest possible array is thus [on4 off4 on3 off3
-- on2 off2 on1 off1 on0 off0]) */
-- *nb = 0;
-- for(n = i - 1; n >= 0; n--){
-- array[(*nb)++] = factor * on[n];
-- array[(*nb)++] = factor * off[n];
-- if(*nb == 10) break;
-- }
--}
--
--static int gl2psPrintPostScriptDash(GLushort pattern, GLint factor, const char *str)
--{
-- int len = 0, i, n, array[10];
--
-- if(pattern == gl2ps->lastpattern && factor == gl2ps->lastfactor)
-- return 0;
--
-- gl2ps->lastpattern = pattern;
-- gl2ps->lastfactor = factor;
--
-- if(!pattern || !factor){
-- /* solid line */
-- len += gl2psPrintf("[] 0 %s\n", str);
-- }
-- else{
-- gl2psParseStipplePattern(pattern, factor, &n, array);
-- len += gl2psPrintf("[");
-- for(i = 0; i < n; i++){
-- if(i) len += gl2psPrintf(" ");
-- len += gl2psPrintf("%d", array[i]);
-- }
-- len += gl2psPrintf("] 0 %s\n", str);
-- }
--
-- return len;
--}
--
--static void gl2psPrintPostScriptPrimitive(void *data)
--{
-- int newline;
-- GL2PSprimitive *prim;
--
-- prim = *(GL2PSprimitive**)data;
--
-- if((gl2ps->options & GL2PS_OCCLUSION_CULL) && prim->culled) return;
--
-- /* Every effort is made to draw lines as connected segments (i.e.,
-- using a single PostScript path): this is the only way to get nice
-- line joins and to not restart the stippling for every line
-- segment. So if the primitive to print is not a line we must first
-- finish the current line (if any): */
-- if(prim->type != GL2PS_LINE) gl2psEndPostScriptLine();
--
-- switch(prim->type){
-- case GL2PS_POINT :
-- gl2psPrintPostScriptColor(prim->verts[0].rgba);
-- gl2psPrintf("%g %g %g P\n",
-- prim->verts[0].xyz[0], prim->verts[0].xyz[1], 0.5 * prim->width);
-- break;
-- case GL2PS_LINE :
-- if(!gl2psSamePosition(gl2ps->lastvertex.xyz, prim->verts[0].xyz) ||
-- !gl2psSameColor(gl2ps->lastrgba, prim->verts[0].rgba) ||
-- gl2ps->lastlinewidth != prim->width ||
-- gl2ps->lastpattern != prim->pattern ||
-- gl2ps->lastfactor != prim->factor){
-- /* End the current line if the new segment does not start where
-- the last one ended, or if the color, the width or the
-- stippling have changed (multi-stroking lines with changing
-- colors is necessary until we use /shfill for lines;
-- unfortunately this means that at the moment we can screw up
-- line stippling for smooth-shaded lines) */
-- gl2psEndPostScriptLine();
-- newline = 1;
-- }
-- else{
-- newline = 0;
-- }
-- if(gl2ps->lastlinewidth != prim->width){
-- gl2ps->lastlinewidth = prim->width;
-- gl2psPrintf("%g W\n", gl2ps->lastlinewidth);
-- }
-- gl2psPrintPostScriptDash(prim->pattern, prim->factor, "setdash");
-- gl2psPrintPostScriptColor(prim->verts[0].rgba);
-- gl2psPrintf("%g %g %s\n", prim->verts[0].xyz[0], prim->verts[0].xyz[1],
-- newline ? "LS" : "L");
-- gl2ps->lastvertex = prim->verts[1];
-- break;
-- case GL2PS_TRIANGLE :
-- if(!gl2psVertsSameColor(prim)){
-- gl2psResetPostScriptColor();
-- gl2psPrintf("%g %g %g %g %g %g %g %g %g %g %g %g %g %g %g ST\n",
-- prim->verts[2].xyz[0], prim->verts[2].xyz[1],
-- prim->verts[2].rgba[0], prim->verts[2].rgba[1],
-- prim->verts[2].rgba[2], prim->verts[1].xyz[0],
-- prim->verts[1].xyz[1], prim->verts[1].rgba[0],
-- prim->verts[1].rgba[1], prim->verts[1].rgba[2],
-- prim->verts[0].xyz[0], prim->verts[0].xyz[1],
-- prim->verts[0].rgba[0], prim->verts[0].rgba[1],
-- prim->verts[0].rgba[2]);
-- }
-- else{
-- gl2psPrintPostScriptColor(prim->verts[0].rgba);
-- gl2psPrintf("%g %g %g %g %g %g T\n",
-- prim->verts[2].xyz[0], prim->verts[2].xyz[1],
-- prim->verts[1].xyz[0], prim->verts[1].xyz[1],
-- prim->verts[0].xyz[0], prim->verts[0].xyz[1]);
-- }
-- break;
-- case GL2PS_QUADRANGLE :
-- gl2psMsg(GL2PS_WARNING, "There should not be any quad left to print");
-- break;
-- case GL2PS_PIXMAP :
-- gl2psPrintPostScriptPixmap(prim->verts[0].xyz[0], prim->verts[0].xyz[1],
-- prim->data.image);
-- break;
-- case GL2PS_IMAGEMAP :
-- if(prim->data.image->type != GL2PS_IMAGEMAP_WRITTEN){
-- gl2psPrintPostScriptColor(prim->verts[0].rgba);
-- gl2psPrintPostScriptImagemap(prim->data.image->pixels[0],
-- prim->data.image->pixels[1],
-- prim->data.image->width, prim->data.image->height,
-- (const unsigned char*)(&(prim->data.image->pixels[2])));
-- prim->data.image->type = GL2PS_IMAGEMAP_WRITTEN;
-- }
-- break;
-- case GL2PS_TEXT :
-- gl2psPrintPostScriptColor(prim->verts[0].rgba);
-- gl2psPrintf("(%s) ", prim->data.text->str);
-- if(prim->data.text->angle)
-- gl2psPrintf("%g ", prim->data.text->angle);
-- gl2psPrintf("%g %g %d /%s ",
-- prim->verts[0].xyz[0], prim->verts[0].xyz[1],
-- prim->data.text->fontsize, prim->data.text->fontname);
-- switch(prim->data.text->alignment){
-- case GL2PS_TEXT_C:
-- gl2psPrintf(prim->data.text->angle ? "SCCR\n" : "SCC\n");
-- break;
-- case GL2PS_TEXT_CL:
-- gl2psPrintf(prim->data.text->angle ? "SCLR\n" : "SCL\n");
-- break;
-- case GL2PS_TEXT_CR:
-- gl2psPrintf(prim->data.text->angle ? "SCRR\n" : "SCR\n");
-- break;
-- case GL2PS_TEXT_B:
-- gl2psPrintf(prim->data.text->angle ? "SBCR\n" : "SBC\n");
-- break;
-- case GL2PS_TEXT_BR:
-- gl2psPrintf(prim->data.text->angle ? "SBRR\n" : "SBR\n");
-- break;
-- case GL2PS_TEXT_T:
-- gl2psPrintf(prim->data.text->angle ? "STCR\n" : "STC\n");
-- break;
-- case GL2PS_TEXT_TL:
-- gl2psPrintf(prim->data.text->angle ? "STLR\n" : "STL\n");
-- break;
-- case GL2PS_TEXT_TR:
-- gl2psPrintf(prim->data.text->angle ? "STRR\n" : "STR\n");
-- break;
-- case GL2PS_TEXT_BL:
-- default:
-- gl2psPrintf(prim->data.text->angle ? "SR\n" : "S\n");
-- break;
-- }
-- break;
-- case GL2PS_SPECIAL :
-- /* alignment contains the format for which the special output text
-- is intended */
-- if(prim->data.text->alignment == GL2PS_PS ||
-- prim->data.text->alignment == GL2PS_EPS)
-- gl2psPrintf("%s\n", prim->data.text->str);
-- break;
-- default :
-- break;
-- }
--}
--
--static void gl2psPrintPostScriptFooter(void)
--{
-- gl2psPrintf("grestore\n"
-- "showpage\n"
-- "cleartomark\n"
-- "%%%%PageTrailer\n"
-- "%%%%Trailer\n"
-- "end\n"
-- "%%%%EOF\n");
--
-- gl2psPrintGzipFooter();
--}
--
--static void gl2psPrintPostScriptBeginViewport(GLint viewport[4])
--{
-- GLint index;
-- GLfloat rgba[4];
-- int x = viewport[0], y = viewport[1], w = viewport[2], h = viewport[3];
--
-- glRenderMode(GL_FEEDBACK);
--
-- if(gl2ps->header){
-- gl2psPrintPostScriptHeader();
-- gl2ps->header = GL_FALSE;
-- }
--
-- gl2psPrintf("gsave\n"
-- "1.0 1.0 scale\n");
--
-- if(gl2ps->options & GL2PS_DRAW_BACKGROUND){
-- if(gl2ps->colormode == GL_RGBA || gl2ps->colorsize == 0){
-- glGetFloatv(GL_COLOR_CLEAR_VALUE, rgba);
-- }
-- else{
-- glGetIntegerv(GL_INDEX_CLEAR_VALUE, &index);
-- rgba[0] = gl2ps->colormap[index][0];
-- rgba[1] = gl2ps->colormap[index][1];
-- rgba[2] = gl2ps->colormap[index][2];
-- rgba[3] = 1.0F;
-- }
-- gl2psPrintf("%g %g %g C\n"
-- "newpath %d %d moveto %d %d lineto %d %d lineto %d %d lineto\n"
-- "closepath fill\n",
-- rgba[0], rgba[1], rgba[2],
-- x, y, x+w, y, x+w, y+h, x, y+h);
-- }
--
-- gl2psPrintf("newpath %d %d moveto %d %d lineto %d %d lineto %d %d lineto\n"
-- "closepath clip\n",
-- x, y, x+w, y, x+w, y+h, x, y+h);
--
--}
--
--static GLint gl2psPrintPostScriptEndViewport(void)
--{
-- GLint res;
--
-- res = gl2psPrintPrimitives();
-- gl2psPrintf("grestore\n");
-- return res;
--}
--
--static void gl2psPrintPostScriptFinalPrimitive(void)
--{
-- /* End any remaining line, if any */
-- gl2psEndPostScriptLine();
--}
--
--/* definition of the PostScript and Encapsulated PostScript backends */
--
--static GL2PSbackend gl2psPS = {
-- gl2psPrintPostScriptHeader,
-- gl2psPrintPostScriptFooter,
-- gl2psPrintPostScriptBeginViewport,
-- gl2psPrintPostScriptEndViewport,
-- gl2psPrintPostScriptPrimitive,
-- gl2psPrintPostScriptFinalPrimitive,
-- "ps",
-- "Postscript"
--};
--
--static GL2PSbackend gl2psEPS = {
-- gl2psPrintPostScriptHeader,
-- gl2psPrintPostScriptFooter,
-- gl2psPrintPostScriptBeginViewport,
-- gl2psPrintPostScriptEndViewport,
-- gl2psPrintPostScriptPrimitive,
-- gl2psPrintPostScriptFinalPrimitive,
-- "eps",
-- "Encapsulated Postscript"
--};
--
--/*********************************************************************
-- *
-- * LaTeX routines
-- *
-- *********************************************************************/
--
--static void gl2psPrintTeXHeader(void)
--{
-- char name[256];
-- time_t now;
-- int i;
--
-- if(gl2ps->filename && strlen(gl2ps->filename) < 256){
-- for(i = strlen(gl2ps->filename)-1; i >= 0; i--){
-- if(gl2ps->filename[i] == '.'){
-- strncpy(name, gl2ps->filename, i);
-- name[i] = '\0';
-- break;
-- }
-- }
-- if(i <= 0) strcpy(name, gl2ps->filename);
-- }
-- else{
-- strcpy(name, "untitled");
-- }
--
-- time(&now);
--
-- fprintf(gl2ps->stream,
-- "%% Title: %s\n"
-- "%% Creator: GL2PS %d.%d.%d%s, %s\n"
-- "%% For: %s\n"
-- "%% CreationDate: %s",
-- gl2ps->title, GL2PS_MAJOR_VERSION, GL2PS_MINOR_VERSION,
-- GL2PS_PATCH_VERSION, GL2PS_EXTRA_VERSION, GL2PS_COPYRIGHT,
-- gl2ps->producer, ctime(&now));
--
-- fprintf(gl2ps->stream,
-- "\\setlength{\\unitlength}{1pt}\n"
-- "\\begin{picture}(0,0)\n"
-- "\\includegraphics{%s}\n"
-- "\\end{picture}%%\n"
-- "%s\\begin{picture}(%d,%d)(0,0)\n",
-- name, (gl2ps->options & GL2PS_LANDSCAPE) ? "\\rotatebox{90}{" : "",
-- (int)gl2ps->viewport[2], (int)gl2ps->viewport[3]);
--}
--
--static void gl2psPrintTeXPrimitive(void *data)
--{
-- GL2PSprimitive *prim;
--
-- prim = *(GL2PSprimitive**)data;
--
-- switch(prim->type){
-- case GL2PS_TEXT :
-- fprintf(gl2ps->stream, "\\fontsize{%d}{0}\n\\selectfont",
-- prim->data.text->fontsize);
-- fprintf(gl2ps->stream, "\\put(%g,%g){\\makebox(0,0)",
-- prim->verts[0].xyz[0], prim->verts[0].xyz[1]);
-- switch(prim->data.text->alignment){
-- case GL2PS_TEXT_C:
-- fprintf(gl2ps->stream, "{");
-- break;
-- case GL2PS_TEXT_CL:
-- fprintf(gl2ps->stream, "[l]{");
-- break;
-- case GL2PS_TEXT_CR:
-- fprintf(gl2ps->stream, "[r]{");
-- break;
-- case GL2PS_TEXT_B:
-- fprintf(gl2ps->stream, "[b]{");
-- break;
-- case GL2PS_TEXT_BR:
-- fprintf(gl2ps->stream, "[br]{");
-- break;
-- case GL2PS_TEXT_T:
-- fprintf(gl2ps->stream, "[t]{");
-- break;
-- case GL2PS_TEXT_TL:
-- fprintf(gl2ps->stream, "[tl]{");
-- break;
-- case GL2PS_TEXT_TR:
-- fprintf(gl2ps->stream, "[tr]{");
-- break;
-- case GL2PS_TEXT_BL:
-- default:
-- fprintf(gl2ps->stream, "[bl]{");
-- break;
-- }
-- if(prim->data.text->angle)
-- fprintf(gl2ps->stream, "\\rotatebox{%g}{", prim->data.text->angle);
-- fprintf(gl2ps->stream, "\\textcolor[rgb]{%g,%g,%g}{{%s}}",
-- prim->verts[0].rgba[0], prim->verts[0].rgba[1], prim->verts[0].rgba[2],
-- prim->data.text->str);
-- if(prim->data.text->angle)
-- fprintf(gl2ps->stream, "}");
-- fprintf(gl2ps->stream, "}}\n");
-- break;
-- case GL2PS_SPECIAL :
-- /* alignment contains the format for which the special output text
-- is intended */
-- if (prim->data.text->alignment == GL2PS_TEX)
-- fprintf(gl2ps->stream, "%s\n", prim->data.text->str);
-- break;
-- default :
-- break;
-- }
--}
--
--static void gl2psPrintTeXFooter(void)
--{
-- fprintf(gl2ps->stream, "\\end{picture}%s\n",
-- (gl2ps->options & GL2PS_LANDSCAPE) ? "}" : "");
--}
--
--static void gl2psPrintTeXBeginViewport(GLint viewport[4])
--{
-- glRenderMode(GL_FEEDBACK);
--
-- if(gl2ps->header){
-- gl2psPrintTeXHeader();
-- gl2ps->header = GL_FALSE;
-- }
--}
--
--static GLint gl2psPrintTeXEndViewport(void)
--{
-- return gl2psPrintPrimitives();
--}
--
--static void gl2psPrintTeXFinalPrimitive(void)
--{
--}
--
--/* definition of the LaTeX backend */
--
--static GL2PSbackend gl2psTEX = {
-- gl2psPrintTeXHeader,
-- gl2psPrintTeXFooter,
-- gl2psPrintTeXBeginViewport,
-- gl2psPrintTeXEndViewport,
-- gl2psPrintTeXPrimitive,
-- gl2psPrintTeXFinalPrimitive,
-- "tex",
-- "LaTeX text"
--};
--
--/*********************************************************************
-- *
-- * PDF routines
-- *
-- *********************************************************************/
--
--static int gl2psPrintPDFCompressorType(void)
--{
--#if defined(GL2PS_HAVE_ZLIB)
-- if(gl2ps->options & GL2PS_COMPRESS){
-- return fprintf(gl2ps->stream, "/Filter [/FlateDecode]\n");
-- }
--#endif
-- return 0;
--}
--
--static int gl2psPrintPDFStrokeColor(GL2PSrgba rgba)
--{
-- int i, offs = 0;
--
-- gl2psSetLastColor(rgba);
-- for(i = 0; i < 3; ++i){
-- if(GL2PS_ZERO(rgba[i]))
-- offs += gl2psPrintf("%.0f ", 0.);
-- else if(rgba[i] < 1e-4 || rgba[i] > 1e6) /* avoid %e formatting */
-- offs += gl2psPrintf("%f ", rgba[i]);
-- else
-- offs += gl2psPrintf("%g ", rgba[i]);
-- }
-- offs += gl2psPrintf("RG\n");
-- return offs;
--}
--
--static int gl2psPrintPDFFillColor(GL2PSrgba rgba)
--{
-- int i, offs = 0;
--
-- for(i = 0; i < 3; ++i){
-- if(GL2PS_ZERO(rgba[i]))
-- offs += gl2psPrintf("%.0f ", 0.);
-- else if(rgba[i] < 1e-4 || rgba[i] > 1e6) /* avoid %e formatting */
-- offs += gl2psPrintf("%f ", rgba[i]);
-- else
-- offs += gl2psPrintf("%g ", rgba[i]);
-- }
-- offs += gl2psPrintf("rg\n");
-- return offs;
--}
--
--static int gl2psPrintPDFLineWidth(GLfloat lw)
--{
-- if(GL2PS_ZERO(lw))
-- return gl2psPrintf("%.0f w\n", 0.);
-- else if(lw < 1e-4 || lw > 1e6) /* avoid %e formatting */
-- return gl2psPrintf("%f w\n", lw);
-- else
-- return gl2psPrintf("%g w\n", lw);
--}
--
--static void gl2psPutPDFText(GL2PSstring *text, int cnt, GLfloat x, GLfloat y)
--{
-- GLfloat rad, crad, srad;
--
-- if(text->angle == 0.0F){
-- gl2ps->streamlength += gl2psPrintf
-- ("BT\n"
-- "/F%d %d Tf\n"
-- "%f %f Td\n"
-- "(%s) Tj\n"
-- "ET\n",
-- cnt, text->fontsize, x, y, text->str);
-- }
-- else{
-- rad = (GLfloat)M_PI * text->angle / 180.0F;
-- srad = (GLfloat)sin(rad);
-- crad = (GLfloat)cos(rad);
-- gl2ps->streamlength += gl2psPrintf
-- ("BT\n"
-- "/F%d %d Tf\n"
-- "%f %f %f %f %f %f Tm\n"
-- "(%s) Tj\n"
-- "ET\n",
-- cnt, text->fontsize, crad, srad, -srad, crad, x, y, text->str);
-- }
--}
--
--static void gl2psPutPDFImage(GL2PSimage *image, int cnt, GLfloat x, GLfloat y)
--{
-- gl2ps->streamlength += gl2psPrintf
-- ("q\n"
-- "%d 0 0 %d %f %f cm\n"
-- "/Im%d Do\n"
-- "Q\n",
-- (int)image->width, (int)image->height, x, y, cnt);
--}
--
--static void gl2psPDFstacksInit(void)
--{
-- gl2ps->objects_stack = 7 /* FIXED_XREF_ENTRIES */ + 1;
-- gl2ps->extgs_stack = 0;
-- gl2ps->font_stack = 0;
-- gl2ps->im_stack = 0;
-- gl2ps->trgroupobjects_stack = 0;
-- gl2ps->shader_stack = 0;
-- gl2ps->mshader_stack = 0;
--}
--
--static void gl2psPDFgroupObjectInit(GL2PSpdfgroup *gro)
--{
-- if(!gro)
-- return;
--
-- gro->ptrlist = NULL;
-- gro->fontno = gro->gsno = gro->imno = gro->maskshno = gro->shno
-- = gro->trgroupno = gro->fontobjno = gro->imobjno = gro->shobjno
-- = gro->maskshobjno = gro->gsobjno = gro->trgroupobjno = -1;
--}
--
--/* Build up group objects and assign name and object numbers */
--
--static void gl2psPDFgroupListInit(void)
--{
-- int i;
-- GL2PSprimitive *p = NULL;
-- GL2PSpdfgroup gro;
-- int lasttype = GL2PS_NO_TYPE;
-- GL2PSrgba lastrgba = {-1.0F, -1.0F, -1.0F, -1.0F};
-- GLushort lastpattern = 0;
-- GLint lastfactor = 0;
-- GLfloat lastwidth = 1;
-- GL2PStriangle lastt, tmpt;
-- int lastTriangleWasNotSimpleWithSameColor = 0;
--
-- if(!gl2ps->pdfprimlist)
-- return;
--
-- gl2ps->pdfgrouplist = gl2psListCreate(500, 500, sizeof(GL2PSpdfgroup));
-- gl2psInitTriangle(&lastt);
--
-- for(i = 0; i < gl2psListNbr(gl2ps->pdfprimlist); ++i){
-- p = *(GL2PSprimitive**)gl2psListPointer(gl2ps->pdfprimlist, i);
-- switch(p->type){
-- case GL2PS_PIXMAP:
-- gl2psPDFgroupObjectInit(&gro);
-- gro.ptrlist = gl2psListCreate(1, 2, sizeof(GL2PSprimitive*));
-- gro.imno = gl2ps->im_stack++;
-- gl2psListAdd(gro.ptrlist, &p);
-- gl2psListAdd(gl2ps->pdfgrouplist, &gro);
-- break;
-- case GL2PS_TEXT:
-- gl2psPDFgroupObjectInit(&gro);
-- gro.ptrlist = gl2psListCreate(1, 2, sizeof(GL2PSprimitive*));
-- gro.fontno = gl2ps->font_stack++;
-- gl2psListAdd(gro.ptrlist, &p);
-- gl2psListAdd(gl2ps->pdfgrouplist, &gro);
-- break;
-- case GL2PS_LINE:
-- if(lasttype != p->type || lastwidth != p->width ||
-- lastpattern != p->pattern || lastfactor != p->factor ||
-- !gl2psSameColor(p->verts[0].rgba, lastrgba)){
-- gl2psPDFgroupObjectInit(&gro);
-- gro.ptrlist = gl2psListCreate(1, 2, sizeof(GL2PSprimitive*));
-- gl2psListAdd(gro.ptrlist, &p);
-- gl2psListAdd(gl2ps->pdfgrouplist, &gro);
-- }
-- else{
-- gl2psListAdd(gro.ptrlist, &p);
-- }
-- lastpattern = p->pattern;
-- lastfactor = p->factor;
-- lastwidth = p->width;
-- lastrgba[0] = p->verts[0].rgba[0];
-- lastrgba[1] = p->verts[0].rgba[1];
-- lastrgba[2] = p->verts[0].rgba[2];
-- break;
-- case GL2PS_POINT:
-- if(lasttype != p->type || lastwidth != p->width ||
-- !gl2psSameColor(p->verts[0].rgba, lastrgba)){
-- gl2psPDFgroupObjectInit(&gro);
-- gro.ptrlist = gl2psListCreate(1,2,sizeof(GL2PSprimitive*));
-- gl2psListAdd(gro.ptrlist, &p);
-- gl2psListAdd(gl2ps->pdfgrouplist, &gro);
-- }
-- else{
-- gl2psListAdd(gro.ptrlist, &p);
-- }
-- lastwidth = p->width;
-- lastrgba[0] = p->verts[0].rgba[0];
-- lastrgba[1] = p->verts[0].rgba[1];
-- lastrgba[2] = p->verts[0].rgba[2];
-- break;
-- case GL2PS_TRIANGLE:
-- gl2psFillTriangleFromPrimitive(&tmpt, p, GL_TRUE);
-- lastTriangleWasNotSimpleWithSameColor =
-- !(tmpt.prop & T_CONST_COLOR && tmpt.prop & T_ALPHA_1) ||
-- !gl2psSameColor(tmpt.vertex[0].rgba, lastt.vertex[0].rgba);
-- if(lasttype == p->type && tmpt.prop == lastt.prop &&
-- lastTriangleWasNotSimpleWithSameColor){
-- /* TODO Check here for last alpha */
-- gl2psListAdd(gro.ptrlist, &p);
-- }
-- else{
-- gl2psPDFgroupObjectInit(&gro);
-- gro.ptrlist = gl2psListCreate(1, 2, sizeof(GL2PSprimitive*));
-- gl2psListAdd(gro.ptrlist, &p);
-- gl2psListAdd(gl2ps->pdfgrouplist, &gro);
-- }
-- lastt = tmpt;
-- break;
-- default:
-- break;
-- }
-- lasttype = p->type;
-- }
--}
--
--static void gl2psSortOutTrianglePDFgroup(GL2PSpdfgroup *gro)
--{
-- GL2PStriangle t;
-- GL2PSprimitive *prim = NULL;
--
-- if(!gro)
-- return;
--
-- if(!gl2psListNbr(gro->ptrlist))
-- return;
--
-- prim = *(GL2PSprimitive**)gl2psListPointer(gro->ptrlist, 0);
--
-- if(prim->type != GL2PS_TRIANGLE)
-- return;
--
-- gl2psFillTriangleFromPrimitive(&t, prim, GL_TRUE);
--
-- if(t.prop & T_CONST_COLOR && t.prop & T_ALPHA_LESS_1){
-- gro->gsno = gl2ps->extgs_stack++;
-- gro->gsobjno = gl2ps->objects_stack ++;
-- }
-- else if(t.prop & T_CONST_COLOR && t.prop & T_VAR_ALPHA){
-- gro->gsno = gl2ps->extgs_stack++;
-- gro->gsobjno = gl2ps->objects_stack++;
-- gro->trgroupno = gl2ps->trgroupobjects_stack++;
-- gro->trgroupobjno = gl2ps->objects_stack++;
-- gro->maskshno = gl2ps->mshader_stack++;
-- gro->maskshobjno = gl2ps->objects_stack++;
-- }
-- else if(t.prop & T_VAR_COLOR && t.prop & T_ALPHA_1){
-- gro->shno = gl2ps->shader_stack++;
-- gro->shobjno = gl2ps->objects_stack++;
-- }
-- else if(t.prop & T_VAR_COLOR && t.prop & T_ALPHA_LESS_1){
-- gro->gsno = gl2ps->extgs_stack++;
-- gro->gsobjno = gl2ps->objects_stack++;
-- gro->shno = gl2ps->shader_stack++;
-- gro->shobjno = gl2ps->objects_stack++;
-- }
-- else if(t.prop & T_VAR_COLOR && t.prop & T_VAR_ALPHA){
-- gro->gsno = gl2ps->extgs_stack++;
-- gro->gsobjno = gl2ps->objects_stack++;
-- gro->shno = gl2ps->shader_stack++;
-- gro->shobjno = gl2ps->objects_stack++;
-- gro->trgroupno = gl2ps->trgroupobjects_stack++;
-- gro->trgroupobjno = gl2ps->objects_stack++;
-- gro->maskshno = gl2ps->mshader_stack++;
-- gro->maskshobjno = gl2ps->objects_stack++;
-- }
--}
--
--/* Main stream data */
--
--static void gl2psPDFgroupListWriteMainStream(void)
--{
-- int i, j, lastel;
-- GL2PSprimitive *prim = NULL, *prev = NULL;
-- GL2PSpdfgroup *gro;
-- GL2PStriangle t;
--
-- if(!gl2ps->pdfgrouplist)
-- return;
--
-- for(i = 0; i < gl2psListNbr(gl2ps->pdfgrouplist); ++i){
-- gro = (GL2PSpdfgroup*)gl2psListPointer(gl2ps->pdfgrouplist, i);
--
-- lastel = gl2psListNbr(gro->ptrlist) - 1;
-- if(lastel < 0)
-- continue;
--
-- prim = *(GL2PSprimitive**)gl2psListPointer(gro->ptrlist, 0);
--
-- switch(prim->type){
-- case GL2PS_POINT:
-- gl2ps->streamlength += gl2psPrintf("1 J\n");
-- gl2ps->streamlength += gl2psPrintPDFLineWidth(prim->width);
-- gl2ps->streamlength += gl2psPrintPDFStrokeColor(prim->verts[0].rgba);
-- for(j = 0; j <= lastel; ++j){
-- prim = *(GL2PSprimitive**)gl2psListPointer(gro->ptrlist, j);
-- gl2ps->streamlength +=
-- gl2psPrintf("%f %f m %f %f l\n",
-- prim->verts[0].xyz[0], prim->verts[0].xyz[1],
-- prim->verts[0].xyz[0], prim->verts[0].xyz[1]);
-- }
-- gl2ps->streamlength += gl2psPrintf("S\n");
-- gl2ps->streamlength += gl2psPrintf("0 J\n");
-- break;
-- case GL2PS_LINE:
-- /* We try to use as few paths as possible to draw lines, in
-- order to get nice stippling even when the individual segments
-- are smaller than the stipple */
-- gl2ps->streamlength += gl2psPrintPDFLineWidth(prim->width);
-- gl2ps->streamlength += gl2psPrintPDFStrokeColor(prim->verts[0].rgba);
-- gl2ps->streamlength += gl2psPrintPostScriptDash(prim->pattern, prim->factor, "d");
-- /* start new path */
-- gl2ps->streamlength +=
-- gl2psPrintf("%f %f m\n",
-- prim->verts[0].xyz[0], prim->verts[0].xyz[1]);
--
-- for(j = 1; j <= lastel; ++j){
-- prev = prim;
-- prim = *(GL2PSprimitive**)gl2psListPointer(gro->ptrlist, j);
-- if(!gl2psSamePosition(prim->verts[0].xyz, prev->verts[1].xyz)){
-- /* the starting point of the new segment does not match the
-- end point of the previous line, so we end the current
-- path and start a new one */
-- gl2ps->streamlength +=
-- gl2psPrintf("%f %f l\n",
-- prev->verts[1].xyz[0], prev->verts[1].xyz[1]);
-- gl2ps->streamlength +=
-- gl2psPrintf("%f %f m\n",
-- prim->verts[0].xyz[0], prim->verts[0].xyz[1]);
-- }
-- else{
-- /* the two segements are connected, so we just append to the
-- current path */
-- gl2ps->streamlength +=
-- gl2psPrintf("%f %f l\n",
-- prim->verts[0].xyz[0], prim->verts[0].xyz[1]);
-- }
-- }
-- /* end last path */
-- gl2ps->streamlength +=
-- gl2psPrintf("%f %f l\n",
-- prim->verts[1].xyz[0], prim->verts[1].xyz[1]);
-- gl2ps->streamlength += gl2psPrintf("S\n");
-- break;
-- case GL2PS_TRIANGLE:
-- gl2psFillTriangleFromPrimitive(&t, prim, GL_TRUE);
-- gl2psSortOutTrianglePDFgroup(gro);
--
-- /* No alpha and const color: Simple PDF draw orders */
-- if(t.prop & T_CONST_COLOR && t.prop & T_ALPHA_1){
-- gl2ps->streamlength += gl2psPrintPDFFillColor(t.vertex[0].rgba);
-- for(j = 0; j <= lastel; ++j){
-- prim = *(GL2PSprimitive**)gl2psListPointer(gro->ptrlist, j);
-- gl2psFillTriangleFromPrimitive(&t, prim, GL_FALSE);
-- gl2ps->streamlength
-- += gl2psPrintf("%f %f m\n"
-- "%f %f l\n"
-- "%f %f l\n"
-- "h f\n",
-- t.vertex[0].xyz[0], t.vertex[0].xyz[1],
-- t.vertex[1].xyz[0], t.vertex[1].xyz[1],
-- t.vertex[2].xyz[0], t.vertex[2].xyz[1]);
-- }
-- }
-- /* Const alpha < 1 and const color: Simple PDF draw orders
-- and an extra extended Graphics State for the alpha const */
-- else if(t.prop & T_CONST_COLOR && t.prop & T_ALPHA_LESS_1){
-- gl2ps->streamlength += gl2psPrintf("q\n"
-- "/GS%d gs\n",
-- gro->gsno);
-- gl2ps->streamlength += gl2psPrintPDFFillColor(prim->verts[0].rgba);
-- for(j = 0; j <= lastel; ++j){
-- prim = *(GL2PSprimitive**)gl2psListPointer(gro->ptrlist, j);
-- gl2psFillTriangleFromPrimitive(&t, prim, GL_FALSE);
-- gl2ps->streamlength
-- += gl2psPrintf("%f %f m\n"
-- "%f %f l\n"
-- "%f %f l\n"
-- "h f\n",
-- t.vertex[0].xyz[0], t.vertex[0].xyz[1],
-- t.vertex[1].xyz[0], t.vertex[1].xyz[1],
-- t.vertex[2].xyz[0], t.vertex[2].xyz[1]);
-- }
-- gl2ps->streamlength += gl2psPrintf("Q\n");
-- }
-- /* Variable alpha and const color: Simple PDF draw orders
-- and an extra extended Graphics State + Xobject + Shader
-- object for the alpha mask */
-- else if(t.prop & T_CONST_COLOR && t.prop & T_VAR_ALPHA){
-- gl2ps->streamlength += gl2psPrintf("q\n"
-- "/GS%d gs\n"
-- "/TrG%d Do\n",
-- gro->gsno, gro->trgroupno);
-- gl2ps->streamlength += gl2psPrintPDFFillColor(prim->verts[0].rgba);
-- for(j = 0; j <= lastel; ++j){
-- prim = *(GL2PSprimitive**)gl2psListPointer(gro->ptrlist, j);
-- gl2psFillTriangleFromPrimitive(&t, prim, GL_FALSE);
-- gl2ps->streamlength
-- += gl2psPrintf("%f %f m\n"
-- "%f %f l\n"
-- "%f %f l\n"
-- "h f\n",
-- t.vertex[0].xyz[0], t.vertex[0].xyz[1],
-- t.vertex[1].xyz[0], t.vertex[1].xyz[1],
-- t.vertex[2].xyz[0], t.vertex[2].xyz[1]);
-- }
-- gl2ps->streamlength += gl2psPrintf("Q\n");
-- }
-- /* Variable color and no alpha: Shader Object for the colored
-- triangle(s) */
-- else if(t.prop & T_VAR_COLOR && t.prop & T_ALPHA_1){
-- gl2ps->streamlength += gl2psPrintf("/Sh%d sh\n", gro->shno);
-- }
-- /* Variable color and const alpha < 1: Shader Object for the
-- colored triangle(s) and an extra extended Graphics State
-- for the alpha const */
-- else if(t.prop & T_VAR_COLOR && t.prop & T_ALPHA_LESS_1){
-- gl2ps->streamlength += gl2psPrintf("q\n"
-- "/GS%d gs\n"
-- "/Sh%d sh\n"
-- "Q\n",
-- gro->gsno, gro->shno);
-- }
-- /* Variable alpha and color: Shader Object for the colored
-- triangle(s) and an extra extended Graphics State
-- + Xobject + Shader object for the alpha mask */
-- else if(t.prop & T_VAR_COLOR && t.prop & T_VAR_ALPHA){
-- gl2ps->streamlength += gl2psPrintf("q\n"
-- "/GS%d gs\n"
-- "/TrG%d Do\n"
-- "/Sh%d sh\n"
-- "Q\n",
-- gro->gsno, gro->trgroupno, gro->shno);
-- }
-- break;
-- case GL2PS_PIXMAP:
-- for(j = 0; j <= lastel; ++j){
-- prim = *(GL2PSprimitive**)gl2psListPointer(gro->ptrlist, j);
-- gl2psPutPDFImage(prim->data.image, gro->imno, prim->verts[0].xyz[0],
-- prim->verts[0].xyz[1]);
-- }
-- break;
-- case GL2PS_TEXT:
-- for(j = 0; j <= lastel; ++j){
-- prim = *(GL2PSprimitive**)gl2psListPointer(gro->ptrlist, j);
-- gl2ps->streamlength += gl2psPrintPDFFillColor(prim->verts[0].rgba);
-- gl2psPutPDFText(prim->data.text, gro->fontno, prim->verts[0].xyz[0],
-- prim->verts[0].xyz[1]);
-- }
-- break;
-- default:
-- break;
-- }
-- }
--}
--
--/* Graphics State names */
--
--static int gl2psPDFgroupListWriteGStateResources(void)
--{
-- GL2PSpdfgroup *gro;
-- int offs = 0;
-- int i;
--
-- offs += fprintf(gl2ps->stream,
-- "/ExtGState\n"
-- "<<\n"
-- "/GSa 7 0 R\n");
-- for(i = 0; i < gl2psListNbr(gl2ps->pdfgrouplist); ++i){
-- gro = (GL2PSpdfgroup*)gl2psListPointer(gl2ps->pdfgrouplist, i);
-- if(gro->gsno >= 0)
-- offs += fprintf(gl2ps->stream, "/GS%d %d 0 R\n", gro->gsno, gro->gsobjno);
-- }
-- offs += fprintf(gl2ps->stream, ">>\n");
-- return offs;
--}
--
--/* Main Shader names */
--
--static int gl2psPDFgroupListWriteShaderResources(void)
--{
-- GL2PSpdfgroup *gro;
-- int offs = 0;
-- int i;
--
-- offs += fprintf(gl2ps->stream,
-- "/Shading\n"
-- "<<\n");
-- for(i = 0; i < gl2psListNbr(gl2ps->pdfgrouplist); ++i){
-- gro = (GL2PSpdfgroup*)gl2psListPointer(gl2ps->pdfgrouplist, i);
-- if(gro->shno >= 0)
-- offs += fprintf(gl2ps->stream, "/Sh%d %d 0 R\n", gro->shno, gro->shobjno);
-- if(gro->maskshno >= 0)
-- offs += fprintf(gl2ps->stream, "/TrSh%d %d 0 R\n", gro->maskshno, gro->maskshobjno);
-- }
-- offs += fprintf(gl2ps->stream,">>\n");
-- return offs;
--}
--
--/* Images & Mask Shader XObject names */
--
--static int gl2psPDFgroupListWriteXObjectResources(void)
--{
-- int i;
-- GL2PSprimitive *p = NULL;
-- GL2PSpdfgroup *gro;
-- int offs = 0;
--
-- offs += fprintf(gl2ps->stream,
-- "/XObject\n"
-- "<<\n");
--
-- for(i = 0; i < gl2psListNbr(gl2ps->pdfgrouplist); ++i){
-- gro = (GL2PSpdfgroup*)gl2psListPointer(gl2ps->pdfgrouplist, i);
-- if(!gl2psListNbr(gro->ptrlist))
-- continue;
-- p = *(GL2PSprimitive**)gl2psListPointer(gro->ptrlist, 0);
-- switch(p->type){
-- case GL2PS_PIXMAP:
-- gro->imobjno = gl2ps->objects_stack++;
-- if(GL_RGBA == p->data.image->format) /* reserve one object for image mask */
-- gl2ps->objects_stack++;
-- offs += fprintf(gl2ps->stream, "/Im%d %d 0 R\n", gro->imno, gro->imobjno);
-- case GL2PS_TRIANGLE:
-- if(gro->trgroupno >=0)
-- offs += fprintf(gl2ps->stream, "/TrG%d %d 0 R\n", gro->trgroupno, gro->trgroupobjno);
-- break;
-- default:
-- break;
-- }
-- }
-- offs += fprintf(gl2ps->stream,">>\n");
-- return offs;
--}
--
--/* Font names */
--
--static int gl2psPDFgroupListWriteFontResources(void)
--{
-- int i;
-- GL2PSpdfgroup *gro;
-- int offs = 0;
--
-- offs += fprintf(gl2ps->stream, "/Font\n<<\n");
--
-- for(i = 0; i < gl2psListNbr(gl2ps->pdfgrouplist); ++i){
-- gro = (GL2PSpdfgroup*)gl2psListPointer(gl2ps->pdfgrouplist, i);
-- if(gro->fontno < 0)
-- continue;
-- gro->fontobjno = gl2ps->objects_stack++;
-- offs += fprintf(gl2ps->stream, "/F%d %d 0 R\n", gro->fontno, gro->fontobjno);
-- }
-- offs += fprintf(gl2ps->stream, ">>\n");
--
-- return offs;
--}
--
--static void gl2psPDFgroupListDelete(void)
--{
-- int i;
-- GL2PSpdfgroup *gro = NULL;
--
-- if(!gl2ps->pdfgrouplist)
-- return;
--
-- for(i = 0; i < gl2psListNbr(gl2ps->pdfgrouplist); ++i){
-- gro = (GL2PSpdfgroup*)gl2psListPointer(gl2ps->pdfgrouplist,i);
-- gl2psListDelete(gro->ptrlist);
-- }
--
-- gl2psListDelete(gl2ps->pdfgrouplist);
-- gl2ps->pdfgrouplist = NULL;
--}
--
--/* Print 1st PDF object - file info */
--
--static int gl2psPrintPDFInfo(void)
--{
-- int offs;
-- time_t now;
-- struct tm *newtime;
--
-- time(&now);
-- newtime = gmtime(&now);
--
-- offs = fprintf(gl2ps->stream,
-- "1 0 obj\n"
-- "<<\n"
-- "/Title (%s)\n"
-- "/Creator (GL2PS %d.%d.%d%s, %s)\n"
-- "/Producer (%s)\n",
-- gl2ps->title, GL2PS_MAJOR_VERSION, GL2PS_MINOR_VERSION,
-- GL2PS_PATCH_VERSION, GL2PS_EXTRA_VERSION, GL2PS_COPYRIGHT,
-- gl2ps->producer);
--
-- if(!newtime){
-- offs += fprintf(gl2ps->stream,
-- ">>\n"
-- "endobj\n");
-- return offs;
-- }
--
-- offs += fprintf(gl2ps->stream,
-- "/CreationDate (D:%d%02d%02d%02d%02d%02d)\n"
-- ">>\n"
-- "endobj\n",
-- newtime->tm_year+1900,
-- newtime->tm_mon+1,
-- newtime->tm_mday,
-- newtime->tm_hour,
-- newtime->tm_min,
-- newtime->tm_sec);
-- return offs;
--}
--
--/* Create catalog and page structure - 2nd and 3th PDF object */
--
--static int gl2psPrintPDFCatalog(void)
--{
-- return fprintf(gl2ps->stream,
-- "2 0 obj\n"
-- "<<\n"
-- "/Type /Catalog\n"
-- "/Pages 3 0 R\n"
-- ">>\n"
-- "endobj\n");
--}
--
--static int gl2psPrintPDFPages(void)
--{
-- return fprintf(gl2ps->stream,
-- "3 0 obj\n"
-- "<<\n"
-- "/Type /Pages\n"
-- "/Kids [6 0 R]\n"
-- "/Count 1\n"
-- ">>\n"
-- "endobj\n");
--}
--
--/* Open stream for data - graphical objects, fonts etc. PDF object 4 */
--
--static int gl2psOpenPDFDataStream(void)
--{
-- int offs = 0;
--
-- offs += fprintf(gl2ps->stream,
-- "4 0 obj\n"
-- "<<\n"
-- "/Length 5 0 R\n" );
-- offs += gl2psPrintPDFCompressorType();
-- offs += fprintf(gl2ps->stream,
-- ">>\n"
-- "stream\n");
-- return offs;
--}
--
--/* Stream setup - Graphics state, fill background if allowed */
--
--static int gl2psOpenPDFDataStreamWritePreface(void)
--{
-- int offs;
--
-- offs = gl2psPrintf("/GSa gs\n");
--
-- if(gl2ps->options & GL2PS_DRAW_BACKGROUND){
-- offs += gl2psPrintPDFFillColor(gl2ps->bgcolor);
-- offs += gl2psPrintf("%d %d %d %d re\n",
-- (int)gl2ps->viewport[0], (int)gl2ps->viewport[1],
-- (int)gl2ps->viewport[2], (int)gl2ps->viewport[3]);
-- offs += gl2psPrintf("f\n");
-- }
-- return offs;
--}
--
--/* Use the functions above to create the first part of the PDF*/
--
--static void gl2psPrintPDFHeader(void)
--{
-- int offs = 0;
-- gl2ps->pdfprimlist = gl2psListCreate(500, 500, sizeof(GL2PSprimitive*));
-- gl2psPDFstacksInit();
--
-- gl2ps->xreflist = (int*)gl2psMalloc(sizeof(int) * gl2ps->objects_stack);
--
--#if defined(GL2PS_HAVE_ZLIB)
-- if(gl2ps->options & GL2PS_COMPRESS){
-- gl2psSetupCompress();
-- }
--#endif
-- gl2ps->xreflist[0] = 0;
-- offs += fprintf(gl2ps->stream, "%%PDF-1.4\n");
-- gl2ps->xreflist[1] = offs;
--
-- offs += gl2psPrintPDFInfo();
-- gl2ps->xreflist[2] = offs;
--
-- offs += gl2psPrintPDFCatalog();
-- gl2ps->xreflist[3] = offs;
--
-- offs += gl2psPrintPDFPages();
-- gl2ps->xreflist[4] = offs;
--
-- offs += gl2psOpenPDFDataStream();
-- gl2ps->xreflist[5] = offs; /* finished in gl2psPrintPDFFooter */
-- gl2ps->streamlength = gl2psOpenPDFDataStreamWritePreface();
--}
--
--/* The central primitive drawing */
--
--static void gl2psPrintPDFPrimitive(void *data)
--{
-- GL2PSprimitive *prim = *(GL2PSprimitive**)data;
--
-- if((gl2ps->options & GL2PS_OCCLUSION_CULL) && prim->culled)
-- return;
--
-- prim = gl2psCopyPrimitive(prim); /* deep copy */
-- gl2psListAdd(gl2ps->pdfprimlist, &prim);
--}
--
--/* close stream and ... */
--
--static int gl2psClosePDFDataStream(void)
--{
-- int offs = 0;
--
--#if defined(GL2PS_HAVE_ZLIB)
-- if(gl2ps->options & GL2PS_COMPRESS){
-- if(Z_OK != gl2psDeflate())
-- gl2psMsg(GL2PS_ERROR, "Zlib deflate error");
-- else
-- fwrite(gl2ps->compress->dest, gl2ps->compress->destLen, 1, gl2ps->stream);
-- gl2ps->streamlength += gl2ps->compress->destLen;
--
-- offs += gl2ps->streamlength;
-- gl2psFreeCompress();
-- }
--#endif
--
-- offs += fprintf(gl2ps->stream,
-- "endstream\n"
-- "endobj\n");
-- return offs;
--}
--
--/* ... write the now known length object */
--
--static int gl2psPrintPDFDataStreamLength(int val)
--{
-- return fprintf(gl2ps->stream,
-- "5 0 obj\n"
-- "%d\n"
-- "endobj\n", val);
--}
--
--/* Put the info created before in PDF objects */
--
--static int gl2psPrintPDFOpenPage(void)
--{
-- int offs;
--
-- /* Write fixed part */
--
-- offs = fprintf(gl2ps->stream,
-- "6 0 obj\n"
-- "<<\n"
-- "/Type /Page\n"
-- "/Parent 3 0 R\n"
-- "/MediaBox [%d %d %d %d]\n",
-- (int)gl2ps->viewport[0], (int)gl2ps->viewport[1],
-- (int)gl2ps->viewport[2], (int)gl2ps->viewport[3]);
--
-- if(gl2ps->options & GL2PS_LANDSCAPE)
-- offs += fprintf(gl2ps->stream, "/Rotate -90\n");
--
-- offs += fprintf(gl2ps->stream,
-- "/Contents 4 0 R\n"
-- "/Resources\n"
-- "<<\n"
-- "/ProcSet [/PDF /Text /ImageB /ImageC] %%/ImageI\n");
--
-- return offs;
--
-- /* End fixed part, proceeds in gl2psPDFgroupListWriteVariableResources() */
--}
--
--static int gl2psPDFgroupListWriteVariableResources(void)
--{
-- int offs = 0;
--
-- /* a) Graphics States for shader alpha masks*/
-- offs += gl2psPDFgroupListWriteGStateResources();
--
-- /* b) Shader and shader masks */
-- offs += gl2psPDFgroupListWriteShaderResources();
--
-- /* c) XObjects (Images & Shader Masks) */
-- offs += gl2psPDFgroupListWriteXObjectResources();
--
-- /* d) Fonts */
-- offs += gl2psPDFgroupListWriteFontResources();
--
-- /* End resources and page */
-- offs += fprintf(gl2ps->stream,
-- ">>\n"
-- ">>\n"
-- "endobj\n");
-- return offs;
--}
--
--/* Standard Graphics State */
--
--static int gl2psPrintPDFGSObject(void)
--{
-- return fprintf(gl2ps->stream,
-- "7 0 obj\n"
-- "<<\n"
-- "/Type /ExtGState\n"
-- "/SA false\n"
-- "/SM 0.02\n"
-- "/OP false\n"
-- "/op false\n"
-- "/OPM 0\n"
-- "/BG2 /Default\n"
-- "/UCR2 /Default\n"
-- "/TR2 /Default\n"
-- ">>\n"
-- "endobj\n");
--}
--
--/* Put vertex' edge flag (8bit) and coordinates (32bit) in shader stream */
--
--static int gl2psPrintPDFShaderStreamDataCoord(GL2PSvertex *vertex,
-- size_t (*action)(unsigned long data,
-- size_t size),
-- GLfloat dx, GLfloat dy,
-- GLfloat xmin, GLfloat ymin)
--{
-- int offs = 0;
-- unsigned long imap;
-- GLfloat diff;
-- double dmax = ~1UL;
-- char edgeflag = 0;
--
-- /* FIXME: temp bux fix for 64 bit archs: */
-- if(sizeof(unsigned long) == 8) dmax = dmax - 2048.;
--
-- offs += (*action)(edgeflag, 1);
--
-- /* The Shader stream in PDF requires to be in a 'big-endian'
-- order */
--
-- if(GL2PS_ZERO(dx * dy)){
-- offs += (*action)(0, 4);
-- offs += (*action)(0, 4);
-- }
-- else{
-- diff = (vertex->xyz[0] - xmin) / dx;
-- if(diff > 1)
-- diff = 1.0F;
-- else if(diff < 0)
-- diff = 0.0F;
-- imap = (unsigned long)(diff * dmax);
-- offs += (*action)(imap, 4);
--
-- diff = (vertex->xyz[1] - ymin) / dy;
-- if(diff > 1)
-- diff = 1.0F;
-- else if(diff < 0)
-- diff = 0.0F;
-- imap = (unsigned long)(diff * dmax);
-- offs += (*action)(imap, 4);
-- }
--
-- return offs;
--}
--
--/* Put vertex' rgb value (8bit for every component) in shader stream */
--
--static int gl2psPrintPDFShaderStreamDataRGB(GL2PSvertex *vertex,
-- size_t (*action)(unsigned long data,
-- size_t size))
--{
-- int offs = 0;
-- unsigned long imap;
-- double dmax = ~1UL;
--
-- /* FIXME: temp bux fix for 64 bit archs: */
-- if(sizeof(unsigned long) == 8) dmax = dmax - 2048.;
--
-- imap = (unsigned long)((vertex->rgba[0]) * dmax);
-- offs += (*action)(imap, 1);
--
-- imap = (unsigned long)((vertex->rgba[1]) * dmax);
-- offs += (*action)(imap, 1);
--
-- imap = (unsigned long)((vertex->rgba[2]) * dmax);
-- offs += (*action)(imap, 1);
--
-- return offs;
--}
--
--/* Put vertex' alpha (8/16bit) in shader stream */
--
--static int gl2psPrintPDFShaderStreamDataAlpha(GL2PSvertex *vertex,
-- size_t (*action)(unsigned long data,
-- size_t size),
-- int sigbyte)
--{
-- int offs = 0;
-- unsigned long imap;
-- double dmax = ~1UL;
--
-- /* FIXME: temp bux fix for 64 bit archs: */
-- if(sizeof(unsigned long) == 8) dmax = dmax - 2048.;
--
-- if(sigbyte != 8 && sigbyte != 16)
-- sigbyte = 8;
--
-- sigbyte /= 8;
--
-- imap = (unsigned long)((vertex->rgba[3]) * dmax);
--
-- offs += (*action)(imap, sigbyte);
--
-- return offs;
--}
--
--/* Put a triangles raw data in shader stream */
--
--static int gl2psPrintPDFShaderStreamData(GL2PStriangle *triangle,
-- GLfloat dx, GLfloat dy,
-- GLfloat xmin, GLfloat ymin,
-- size_t (*action)(unsigned long data,
-- size_t size),
-- int gray)
--{
-- int i, offs = 0;
-- GL2PSvertex v;
--
-- if(gray && gray != 8 && gray != 16)
-- gray = 8;
--
-- for(i = 0; i < 3; ++i){
-- offs += gl2psPrintPDFShaderStreamDataCoord(&triangle->vertex[i], action,
-- dx, dy, xmin, ymin);
-- if(gray){
-- v = triangle->vertex[i];
-- offs += gl2psPrintPDFShaderStreamDataAlpha(&v, action, gray);
-- }
-- else{
-- offs += gl2psPrintPDFShaderStreamDataRGB(&triangle->vertex[i], action);
-- }
-- }
--
-- return offs;
--}
--
--static void gl2psPDFRectHull(GLfloat *xmin, GLfloat *xmax,
-- GLfloat *ymin, GLfloat *ymax,
-- GL2PStriangle *triangles, int cnt)
--{
-- int i, j;
--
-- *xmin = triangles[0].vertex[0].xyz[0];
-- *xmax = triangles[0].vertex[0].xyz[0];
-- *ymin = triangles[0].vertex[0].xyz[1];
-- *ymax = triangles[0].vertex[0].xyz[1];
--
-- for(i = 0; i < cnt; ++i){
-- for(j = 0; j < 3; ++j){
-- if(*xmin > triangles[i].vertex[j].xyz[0])
-- *xmin = triangles[i].vertex[j].xyz[0];
-- if(*xmax < triangles[i].vertex[j].xyz[0])
-- *xmax = triangles[i].vertex[j].xyz[0];
-- if(*ymin > triangles[i].vertex[j].xyz[1])
-- *ymin = triangles[i].vertex[j].xyz[1];
-- if(*ymax < triangles[i].vertex[j].xyz[1])
-- *ymax = triangles[i].vertex[j].xyz[1];
-- }
-- }
--}
--
--/* Writes shaded triangle
-- gray == 0 means write RGB triangles
-- gray == 8 8bit-grayscale (for alpha masks)
-- gray == 16 16bit-grayscale (for alpha masks) */
--
--static int gl2psPrintPDFShader(int obj, GL2PStriangle *triangles,
-- int size, int gray)
--{
-- int i, offs = 0, vertexbytes, done = 0;
-- GLfloat xmin, xmax, ymin, ymax;
--
-- switch(gray){
-- case 0:
-- vertexbytes = 1+4+4+1+1+1;
-- break;
-- case 8:
-- vertexbytes = 1+4+4+1;
-- break;
-- case 16:
-- vertexbytes = 1+4+4+2;
-- break;
-- default:
-- gray = 8;
-- vertexbytes = 1+4+4+1;
-- break;
-- }
--
-- gl2psPDFRectHull(&xmin, &xmax, &ymin, &ymax, triangles, size);
--
-- offs += fprintf(gl2ps->stream,
-- "%d 0 obj\n"
-- "<< "
-- "/ShadingType 4 "
-- "/ColorSpace %s "
-- "/BitsPerCoordinate 32 "
-- "/BitsPerComponent %d "
-- "/BitsPerFlag 8 "
-- "/Decode [%f %f %f %f 0 1 %s] ",
-- obj,
-- (gray) ? "/DeviceGray" : "/DeviceRGB",
-- (gray) ? gray : 8,
-- xmin, xmax, ymin, ymax,
-- (gray) ? "" : "0 1 0 1");
--
--#if defined(GL2PS_HAVE_ZLIB)
-- if(gl2ps->options & GL2PS_COMPRESS){
-- gl2psAllocCompress(vertexbytes * size * 3);
--
-- for(i = 0; i < size; ++i)
-- gl2psPrintPDFShaderStreamData(&triangles[i],
-- xmax-xmin, ymax-ymin, xmin, ymin,
-- gl2psWriteBigEndianCompress, gray);
--
-- if(Z_OK == gl2psDeflate() && 23 + gl2ps->compress->destLen < gl2ps->compress->srcLen){
-- offs += gl2psPrintPDFCompressorType();
-- offs += fprintf(gl2ps->stream,
-- "/Length %d "
-- ">>\n"
-- "stream\n",
-- (int)gl2ps->compress->destLen);
-- offs += gl2ps->compress->destLen * fwrite(gl2ps->compress->dest,
-- gl2ps->compress->destLen,
-- 1, gl2ps->stream);
-- done = 1;
-- }
-- gl2psFreeCompress();
-- }
--#endif
--
-- if(!done){
-- /* no compression, or too long after compression, or compress error
-- -> write non-compressed entry */
-- offs += fprintf(gl2ps->stream,
-- "/Length %d "
-- ">>\n"
-- "stream\n",
-- vertexbytes * 3 * size);
-- for(i = 0; i < size; ++i)
-- offs += gl2psPrintPDFShaderStreamData(&triangles[i],
-- xmax-xmin, ymax-ymin, xmin, ymin,
-- gl2psWriteBigEndian, gray);
-- }
--
-- offs += fprintf(gl2ps->stream,
-- "\nendstream\n"
-- "endobj\n");
--
-- return offs;
--}
--
--/* Writes a XObject for a shaded triangle mask */
--
--static int gl2psPrintPDFShaderMask(int obj, int childobj)
--{
-- int offs = 0, len;
--
-- offs += fprintf(gl2ps->stream,
-- "%d 0 obj\n"
-- "<<\n"
-- "/Type /XObject\n"
-- "/Subtype /Form\n"
-- "/BBox [ %d %d %d %d ]\n"
-- "/Group \n<<\n/S /Transparency /CS /DeviceRGB\n"
-- ">>\n",
-- obj,
-- (int)gl2ps->viewport[0], (int)gl2ps->viewport[1],
-- (int)gl2ps->viewport[2], (int)gl2ps->viewport[3]);
--
-- len = (childobj>0)
-- ? strlen("/TrSh sh\n") + (int)log10((double)childobj)+1
-- : strlen("/TrSh0 sh\n");
--
-- offs += fprintf(gl2ps->stream,
-- "/Length %d\n"
-- ">>\n"
-- "stream\n",
-- len);
-- offs += fprintf(gl2ps->stream,
-- "/TrSh%d sh\n",
-- childobj);
-- offs += fprintf(gl2ps->stream,
-- "endstream\n"
-- "endobj\n");
--
-- return offs;
--}
--
--/* Writes a Extended graphics state for a shaded triangle mask if
-- simplealpha ist true the childobj argument is ignored and a /ca
-- statement will be written instead */
--
--static int gl2psPrintPDFShaderExtGS(int obj, int childobj)
--{
-- int offs = 0;
--
-- offs += fprintf(gl2ps->stream,
-- "%d 0 obj\n"
-- "<<\n",
-- obj);
--
-- offs += fprintf(gl2ps->stream,
-- "/SMask << /S /Alpha /G %d 0 R >> ",
-- childobj);
--
-- offs += fprintf(gl2ps->stream,
-- ">>\n"
-- "endobj\n");
-- return offs;
--}
--
--/* a simple graphics state */
--
--static int gl2psPrintPDFShaderSimpleExtGS(int obj, GLfloat alpha)
--{
-- int offs = 0;
--
-- offs += fprintf(gl2ps->stream,
-- "%d 0 obj\n"
-- "<<\n"
-- "/ca %g"
-- ">>\n"
-- "endobj\n",
-- obj, alpha);
-- return offs;
--}
--
--/* Similar groups of functions for pixmaps and text */
--
--static int gl2psPrintPDFPixmapStreamData(GL2PSimage *im,
-- size_t (*action)(unsigned long data,
-- size_t size),
-- int gray)
--{
-- int x, y, shift;
-- GLfloat r, g, b, a;
--
-- if(im->format != GL_RGBA && gray)
-- return 0;
--
-- if(gray && gray != 8 && gray != 16)
-- gray = 8;
--
-- gray /= 8;
--
-- shift = (sizeof(unsigned long) - 1) * 8;
--
-- for(y = 0; y < im->height; ++y){
-- for(x = 0; x < im->width; ++x){
-- a = gl2psGetRGB(im, x, y, &r, &g, &b);
-- if(im->format == GL_RGBA && gray){
-- (*action)((unsigned long)(a * 255) << shift, gray);
-- }
-- else{
-- (*action)((unsigned long)(r * 255) << shift, 1);
-- (*action)((unsigned long)(g * 255) << shift, 1);
-- (*action)((unsigned long)(b * 255) << shift, 1);
-- }
-- }
-- }
--
-- switch(gray){
-- case 0: return 3 * im->width * im->height;
-- case 1: return im->width * im->height;
-- case 2: return 2 * im->width * im->height;
-- default: return 3 * im->width * im->height;
-- }
--}
--
--static int gl2psPrintPDFPixmap(int obj, int childobj, GL2PSimage *im, int gray)
--{
-- int offs = 0, done = 0, sigbytes = 3;
--
-- if(gray && gray !=8 && gray != 16)
-- gray = 8;
--
-- if(gray)
-- sigbytes = gray / 8;
--
-- offs += fprintf(gl2ps->stream,
-- "%d 0 obj\n"
-- "<<\n"
-- "/Type /XObject\n"
-- "/Subtype /Image\n"
-- "/Width %d\n"
-- "/Height %d\n"
-- "/ColorSpace %s \n"
-- "/BitsPerComponent 8\n",
-- obj,
-- (int)im->width, (int)im->height,
-- (gray) ? "/DeviceGray" : "/DeviceRGB" );
-- if(GL_RGBA == im->format && gray == 0){
-- offs += fprintf(gl2ps->stream,
-- "/SMask %d 0 R\n",
-- childobj);
-- }
--
--#if defined(GL2PS_HAVE_ZLIB)
-- if(gl2ps->options & GL2PS_COMPRESS){
-- gl2psAllocCompress((int)(im->width * im->height * sigbytes));
--
-- gl2psPrintPDFPixmapStreamData(im, gl2psWriteBigEndianCompress, gray);
--
-- if(Z_OK == gl2psDeflate() && 23 + gl2ps->compress->destLen < gl2ps->compress->srcLen){
-- offs += gl2psPrintPDFCompressorType();
-- offs += fprintf(gl2ps->stream,
-- "/Length %d "
-- ">>\n"
-- "stream\n",
-- (int)gl2ps->compress->destLen);
-- offs += gl2ps->compress->destLen * fwrite(gl2ps->compress->dest, gl2ps->compress->destLen,
-- 1, gl2ps->stream);
-- done = 1;
-- }
-- gl2psFreeCompress();
-- }
--#endif
--
-- if(!done){
-- /* no compression, or too long after compression, or compress error
-- -> write non-compressed entry */
-- offs += fprintf(gl2ps->stream,
-- "/Length %d "
-- ">>\n"
-- "stream\n",
-- (int)(im->width * im->height * sigbytes));
-- offs += gl2psPrintPDFPixmapStreamData(im, gl2psWriteBigEndian, gray);
-- }
--
-- offs += fprintf(gl2ps->stream,
-- "\nendstream\n"
-- "endobj\n");
--
-- return offs;
--}
--
--static int gl2psPrintPDFText(int obj, GL2PSstring *s, int fontnumber)
--{
-- int offs = 0;
--
-- offs += fprintf(gl2ps->stream,
-- "%d 0 obj\n"
-- "<<\n"
-- "/Type /Font\n"
-- "/Subtype /Type1\n"
-- "/Name /F%d\n"
-- "/BaseFont /%s\n"
-- "/Encoding /MacRomanEncoding\n"
-- ">>\n"
-- "endobj\n",
-- obj, fontnumber, s->fontname);
-- return offs;
--}
--
--/* Write the physical objects */
--
--static int gl2psPDFgroupListWriteObjects(int entryoffs)
--{
-- int i,j;
-- GL2PSprimitive *p = NULL;
-- GL2PSpdfgroup *gro;
-- int offs = entryoffs;
-- GL2PStriangle *triangles;
-- int size = 0;
--
-- if(!gl2ps->pdfgrouplist)
-- return offs;
--
-- for(i = 0; i < gl2psListNbr(gl2ps->pdfgrouplist); ++i){
-- gro = (GL2PSpdfgroup*)gl2psListPointer(gl2ps->pdfgrouplist, i);
-- if(!gl2psListNbr(gro->ptrlist))
-- continue;
-- p = *(GL2PSprimitive**)gl2psListPointer(gro->ptrlist, 0);
-- switch(p->type){
-- case GL2PS_POINT:
-- break;
-- case GL2PS_LINE:
-- break;
-- case GL2PS_TRIANGLE:
-- size = gl2psListNbr(gro->ptrlist);
-- triangles = (GL2PStriangle*)gl2psMalloc(sizeof(GL2PStriangle) * size);
-- for(j = 0; j < size; ++j){
-- p = *(GL2PSprimitive**)gl2psListPointer(gro->ptrlist, j);
-- gl2psFillTriangleFromPrimitive(&triangles[j], p, GL_TRUE);
-- }
-- if(triangles[0].prop & T_VAR_COLOR){
-- gl2ps->xreflist[gro->shobjno] = offs;
-- offs += gl2psPrintPDFShader(gro->shobjno, triangles, size, 0);
-- }
-- if(triangles[0].prop & T_ALPHA_LESS_1){
-- gl2ps->xreflist[gro->gsobjno] = offs;
-- offs += gl2psPrintPDFShaderSimpleExtGS(gro->gsobjno, triangles[0].vertex[0].rgba[3]);
-- }
-- if(triangles[0].prop & T_VAR_ALPHA){
-- gl2ps->xreflist[gro->gsobjno] = offs;
-- offs += gl2psPrintPDFShaderExtGS(gro->gsobjno, gro->trgroupobjno);
-- gl2ps->xreflist[gro->trgroupobjno] = offs;
-- offs += gl2psPrintPDFShaderMask(gro->trgroupobjno, gro->maskshno);
-- gl2ps->xreflist[gro->maskshobjno] = offs;
-- offs += gl2psPrintPDFShader(gro->maskshobjno, triangles, size, 8);
-- }
-- gl2psFree(triangles);
-- break;
-- case GL2PS_PIXMAP:
-- gl2ps->xreflist[gro->imobjno] = offs;
-- offs += gl2psPrintPDFPixmap(gro->imobjno, gro->imobjno+1, p->data.image, 0);
-- if(p->data.image->format == GL_RGBA){
-- gl2ps->xreflist[gro->imobjno+1] = offs;
-- offs += gl2psPrintPDFPixmap(gro->imobjno+1, -1, p->data.image, 8);
-- }
-- break;
-- case GL2PS_TEXT:
-- gl2ps->xreflist[gro->fontobjno] = offs;
-- offs += gl2psPrintPDFText(gro->fontobjno,p->data.text,gro->fontno);
-- break;
-- case GL2PS_SPECIAL :
-- /* alignment contains the format for which the special output text
-- is intended */
-- if(p->data.text->alignment == GL2PS_PDF)
-- offs += fprintf(gl2ps->stream, "%s\n", p->data.text->str);
-- break;
-- default:
-- break;
-- }
-- }
-- return offs;
--}
--
--/* All variable data has been written at this point and all required
-- functioninality has been gathered, so we can write now file footer
-- with cross reference table and trailer */
--
--static void gl2psPrintPDFFooter(void)
--{
-- int i, offs;
--
-- gl2psPDFgroupListInit();
-- gl2psPDFgroupListWriteMainStream();
--
-- offs = gl2ps->xreflist[5] + gl2ps->streamlength;
-- offs += gl2psClosePDFDataStream();
-- gl2ps->xreflist[5] = offs;
--
-- offs += gl2psPrintPDFDataStreamLength(gl2ps->streamlength);
-- gl2ps->xreflist[6] = offs;
-- gl2ps->streamlength = 0;
--
-- offs += gl2psPrintPDFOpenPage();
-- offs += gl2psPDFgroupListWriteVariableResources();
-- gl2ps->xreflist = (int*)gl2psRealloc(gl2ps->xreflist,
-- sizeof(int) * (gl2ps->objects_stack + 1));
-- gl2ps->xreflist[7] = offs;
--
-- offs += gl2psPrintPDFGSObject();
-- gl2ps->xreflist[8] = offs;
--
-- gl2ps->xreflist[gl2ps->objects_stack] =
-- gl2psPDFgroupListWriteObjects(gl2ps->xreflist[8]);
--
-- /* Start cross reference table. The file has to been opened in
-- binary mode to preserve the 20 digit string length! */
-- fprintf(gl2ps->stream,
-- "xref\n"
-- "0 %d\n"
-- "%010d 65535 f \n", gl2ps->objects_stack, 0);
--
-- for(i = 1; i < gl2ps->objects_stack; ++i)
-- fprintf(gl2ps->stream, "%010d 00000 n \n", gl2ps->xreflist[i]);
--
-- fprintf(gl2ps->stream,
-- "trailer\n"
-- "<<\n"
-- "/Size %d\n"
-- "/Info 1 0 R\n"
-- "/Root 2 0 R\n"
-- ">>\n"
-- "startxref\n%d\n"
-- "%%%%EOF\n",
-- gl2ps->objects_stack, gl2ps->xreflist[gl2ps->objects_stack]);
--
-- /* Free auxiliary lists and arrays */
-- gl2psFree(gl2ps->xreflist);
-- gl2psListAction(gl2ps->pdfprimlist, gl2psFreePrimitive);
-- gl2psListDelete(gl2ps->pdfprimlist);
-- gl2psPDFgroupListDelete();
--
--#if defined(GL2PS_HAVE_ZLIB)
-- if(gl2ps->options & GL2PS_COMPRESS){
-- gl2psFreeCompress();
-- gl2psFree(gl2ps->compress);
-- gl2ps->compress = NULL;
-- }
--#endif
--}
--
--/* PDF begin viewport */
--
--static void gl2psPrintPDFBeginViewport(GLint viewport[4])
--{
-- int offs = 0;
-- GLint index;
-- GLfloat rgba[4];
-- int x = viewport[0], y = viewport[1], w = viewport[2], h = viewport[3];
--
-- glRenderMode(GL_FEEDBACK);
--
-- if(gl2ps->header){
-- gl2psPrintPDFHeader();
-- gl2ps->header = GL_FALSE;
-- }
--
-- offs += gl2psPrintf("q\n");
--
-- if(gl2ps->options & GL2PS_DRAW_BACKGROUND){
-- if(gl2ps->colormode == GL_RGBA || gl2ps->colorsize == 0){
-- glGetFloatv(GL_COLOR_CLEAR_VALUE, rgba);
-- }
-- else{
-- glGetIntegerv(GL_INDEX_CLEAR_VALUE, &index);
-- rgba[0] = gl2ps->colormap[index][0];
-- rgba[1] = gl2ps->colormap[index][1];
-- rgba[2] = gl2ps->colormap[index][2];
-- rgba[3] = 1.0F;
-- }
-- offs += gl2psPrintPDFFillColor(rgba);
-- offs += gl2psPrintf("%d %d %d %d re\n"
-- "W\n"
-- "f\n",
-- x, y, w, h);
-- }
-- else{
-- offs += gl2psPrintf("%d %d %d %d re\n"
-- "W\n"
-- "n\n",
-- x, y, w, h);
-- }
--
-- gl2ps->streamlength += offs;
--}
--
--static GLint gl2psPrintPDFEndViewport(void)
--{
-- GLint res;
--
-- res = gl2psPrintPrimitives();
-- gl2ps->streamlength += gl2psPrintf("Q\n");
-- return res;
--}
--
--static void gl2psPrintPDFFinalPrimitive(void)
--{
--}
--
--/* definition of the PDF backend */
--
--static GL2PSbackend gl2psPDF = {
-- gl2psPrintPDFHeader,
-- gl2psPrintPDFFooter,
-- gl2psPrintPDFBeginViewport,
-- gl2psPrintPDFEndViewport,
-- gl2psPrintPDFPrimitive,
-- gl2psPrintPDFFinalPrimitive,
-- "pdf",
-- "Portable Document Format"
--};
--
--/*********************************************************************
-- *
-- * SVG routines
-- *
-- *********************************************************************/
--
--static void gl2psSVGGetCoordsAndColors(int n, GL2PSvertex *verts,
-- GL2PSxyz *xyz, GL2PSrgba *rgba)
--{
-- int i, j;
--
-- for(i = 0; i < n; i++){
-- xyz[i][0] = verts[i].xyz[0];
-- xyz[i][1] = gl2ps->viewport[3] - verts[i].xyz[1];
-- xyz[i][2] = 0.0F;
-- for(j = 0; j < 4; j++)
-- rgba[i][j] = verts[i].rgba[j];
-- }
--}
--
--static void gl2psSVGGetColorString(GL2PSrgba rgba, char str[32])
--{
-- int r = (int)(255. * rgba[0]);
-- int g = (int)(255. * rgba[1]);
-- int b = (int)(255. * rgba[2]);
-- int rc = (r < 0) ? 0 : (r > 255) ? 255 : r;
-- int gc = (g < 0) ? 0 : (g > 255) ? 255 : g;
-- int bc = (b < 0) ? 0 : (b > 255) ? 255 : b;
-- sprintf(str, "#%2.2x%2.2x%2.2x", rc, gc, bc);
--}
--
--static void gl2psPrintSVGHeader(void)
--{
-- int x, y, width, height;
-- char col[32];
-- time_t now;
--
-- time(&now);
--
-- if (gl2ps->options & GL2PS_LANDSCAPE){
-- x = (int)gl2ps->viewport[1];
-- y = (int)gl2ps->viewport[0];
-- width = (int)gl2ps->viewport[3];
-- height = (int)gl2ps->viewport[2];
-- }
-- else{
-- x = (int)gl2ps->viewport[0];
-- y = (int)gl2ps->viewport[1];
-- width = (int)gl2ps->viewport[2];
-- height = (int)gl2ps->viewport[3];
-- }
--
-- /* Compressed SVG files (.svgz) are simply gzipped SVG files */
-- gl2psPrintGzipHeader();
--
-- gl2psPrintf("<?xml version=\"1.0\" encoding=\"UTF-8\" standalone=\"no\"?>\n");
-- gl2psPrintf("<svg xmlns=\"http://www.w3.org/2000/svg\"\n");
-- gl2psPrintf(" xmlns:xlink=\"http://www.w3.org/1999/xlink\"\n"
-- " width=\"%dpx\" height=\"%dpx\" viewBox=\"%d %d %d %d\">\n",
-- width, height, x, y, width, height);
-- gl2psPrintf("<title>%s</title>\n", gl2ps->title);
-- gl2psPrintf("<desc>\n");
-- gl2psPrintf("Creator: GL2PS %d.%d.%d%s, %s\n"
-- "For: %s\n"
-- "CreationDate: %s",
-- GL2PS_MAJOR_VERSION, GL2PS_MINOR_VERSION, GL2PS_PATCH_VERSION,
-- GL2PS_EXTRA_VERSION, GL2PS_COPYRIGHT, gl2ps->producer, ctime(&now));
-- gl2psPrintf("</desc>\n");
-- gl2psPrintf("<defs>\n");
-- gl2psPrintf("</defs>\n");
--
-- if(gl2ps->options & GL2PS_DRAW_BACKGROUND){
-- gl2psSVGGetColorString(gl2ps->bgcolor, col);
-- gl2psPrintf("<polygon fill=\"%s\" points=\"%d,%d %d,%d %d,%d %d,%d\"/>\n", col,
-- (int)gl2ps->viewport[0], (int)gl2ps->viewport[1],
-- (int)gl2ps->viewport[2], (int)gl2ps->viewport[1],
-- (int)gl2ps->viewport[2], (int)gl2ps->viewport[3],
-- (int)gl2ps->viewport[0], (int)gl2ps->viewport[3]);
-- }
--
-- /* group all the primitives and disable antialiasing */
-- gl2psPrintf("<g shape-rendering=\"crispEdges\">\n");
--}
--
--static void gl2psPrintSVGSmoothTriangle(GL2PSxyz xyz[3], GL2PSrgba rgba[3])
--{
-- int i;
-- GL2PSxyz xyz2[3];
-- GL2PSrgba rgba2[3];
-- char col[32];
--
-- /* Apparently there is no easy way to do Gouraud shading in SVG
-- without explicitly pre-defining gradients, so for now we just do
-- recursive subdivision */
--
-- if(gl2psSameColorThreshold(3, rgba, gl2ps->threshold)){
-- gl2psSVGGetColorString(rgba[0], col);
-- gl2psPrintf("<polygon fill=\"%s\" ", col);
-- if(rgba[0][3] < 1.0F) gl2psPrintf("fill-opacity=\"%g\" ", rgba[0][3]);
-- gl2psPrintf("points=\"%g,%g %g,%g %g,%g\"/>\n", xyz[0][0], xyz[0][1],
-- xyz[1][0], xyz[1][1], xyz[2][0], xyz[2][1]);
-- }
-- else{
-- /* subdivide into 4 subtriangles */
-- for(i = 0; i < 3; i++){
-- xyz2[0][i] = xyz[0][i];
-- xyz2[1][i] = 0.5F * (xyz[0][i] + xyz[1][i]);
-- xyz2[2][i] = 0.5F * (xyz[0][i] + xyz[2][i]);
-- }
-- for(i = 0; i < 4; i++){
-- rgba2[0][i] = rgba[0][i];
-- rgba2[1][i] = 0.5F * (rgba[0][i] + rgba[1][i]);
-- rgba2[2][i] = 0.5F * (rgba[0][i] + rgba[2][i]);
-- }
-- gl2psPrintSVGSmoothTriangle(xyz2, rgba2);
-- for(i = 0; i < 3; i++){
-- xyz2[0][i] = 0.5F * (xyz[0][i] + xyz[1][i]);
-- xyz2[1][i] = xyz[1][i];
-- xyz2[2][i] = 0.5F * (xyz[1][i] + xyz[2][i]);
-- }
-- for(i = 0; i < 4; i++){
-- rgba2[0][i] = 0.5F * (rgba[0][i] + rgba[1][i]);
-- rgba2[1][i] = rgba[1][i];
-- rgba2[2][i] = 0.5F * (rgba[1][i] + rgba[2][i]);
-- }
-- gl2psPrintSVGSmoothTriangle(xyz2, rgba2);
-- for(i = 0; i < 3; i++){
-- xyz2[0][i] = 0.5F * (xyz[0][i] + xyz[2][i]);
-- xyz2[1][i] = xyz[2][i];
-- xyz2[2][i] = 0.5F * (xyz[1][i] + xyz[2][i]);
-- }
-- for(i = 0; i < 4; i++){
-- rgba2[0][i] = 0.5F * (rgba[0][i] + rgba[2][i]);
-- rgba2[1][i] = rgba[2][i];
-- rgba2[2][i] = 0.5F * (rgba[1][i] + rgba[2][i]);
-- }
-- gl2psPrintSVGSmoothTriangle(xyz2, rgba2);
-- for(i = 0; i < 3; i++){
-- xyz2[0][i] = 0.5F * (xyz[0][i] + xyz[1][i]);
-- xyz2[1][i] = 0.5F * (xyz[1][i] + xyz[2][i]);
-- xyz2[2][i] = 0.5F * (xyz[0][i] + xyz[2][i]);
-- }
-- for(i = 0; i < 4; i++){
-- rgba2[0][i] = 0.5F * (rgba[0][i] + rgba[1][i]);
-- rgba2[1][i] = 0.5F * (rgba[1][i] + rgba[2][i]);
-- rgba2[2][i] = 0.5F * (rgba[0][i] + rgba[2][i]);
-- }
-- gl2psPrintSVGSmoothTriangle(xyz2, rgba2);
-- }
--}
--
--static void gl2psPrintSVGDash(GLushort pattern, GLint factor)
--{
-- int i, n, array[10];
--
-- if(!pattern || !factor) return; /* solid line */
--
-- gl2psParseStipplePattern(pattern, factor, &n, array);
-- gl2psPrintf("stroke-dasharray=\"");
-- for(i = 0; i < n; i++){
-- if(i) gl2psPrintf(",");
-- gl2psPrintf("%d", array[i]);
-- }
-- gl2psPrintf("\" ");
--}
--
--static void gl2psEndSVGLine(void)
--{
-- int i;
-- if(gl2ps->lastvertex.rgba[0] >= 0.){
-- gl2psPrintf("%g,%g\"/>\n", gl2ps->lastvertex.xyz[0],
-- gl2ps->viewport[3] - gl2ps->lastvertex.xyz[1]);
-- for(i = 0; i < 3; i++)
-- gl2ps->lastvertex.xyz[i] = -1.;
-- for(i = 0; i < 4; i++)
-- gl2ps->lastvertex.rgba[i] = -1.;
-- }
--}
--
--static void gl2psPrintSVGPixmap(GLfloat x, GLfloat y, GL2PSimage *pixmap)
--{
--#if defined(GL2PS_HAVE_LIBPNG)
-- GL2PSlist *png;
-- unsigned char c;
-- int i;
--
-- /* The only image types supported by the SVG standard are JPEG, PNG
-- and SVG. Here we choose PNG, and since we want to embed the image
-- directly in the SVG stream (and not link to an external image
-- file), we need to encode the pixmap into PNG in memory, then
-- encode it into base64. */
--
-- png = gl2psListCreate(pixmap->width * pixmap->height * 3, 1000,
-- sizeof(unsigned char));
-- gl2psConvertPixmapToPNG(pixmap, png);
-- gl2psListEncodeBase64(png);
-- gl2psPrintf("<image x=\"%g\" y=\"%g\" width=\"%d\" height=\"%d\"\n",
-- x, y - pixmap->height, pixmap->width, pixmap->height);
-- gl2psPrintf("xlink:href=\"data:image/png;base64,");
-- for(i = 0; i < gl2psListNbr(png); i++){
-- gl2psListRead(png, i, &c);
-- gl2psPrintf("%c", c);
-- }
-- gl2psPrintf("\"/>\n");
-- gl2psListDelete(png);
--#else
-- gl2psMsg(GL2PS_WARNING, "GL2PS must be compiled with PNG support in "
-- "order to embed images in SVG streams");
--#endif
--}
--
--static void gl2psPrintSVGPrimitive(void *data)
--{
-- GL2PSprimitive *prim;
-- GL2PSxyz xyz[4];
-- GL2PSrgba rgba[4];
-- char col[32];
-- int newline;
--
-- prim = *(GL2PSprimitive**)data;
--
-- if((gl2ps->options & GL2PS_OCCLUSION_CULL) && prim->culled) return;
--
-- /* We try to draw connected lines as a single path to get nice line
-- joins and correct stippling. So if the primitive to print is not
-- a line we must first finish the current line (if any): */
-- if(prim->type != GL2PS_LINE) gl2psEndSVGLine();
--
-- gl2psSVGGetCoordsAndColors(prim->numverts, prim->verts, xyz, rgba);
--
-- switch(prim->type){
-- case GL2PS_POINT :
-- gl2psSVGGetColorString(rgba[0], col);
-- gl2psPrintf("<circle fill=\"%s\" ", col);
-- if(rgba[0][3] < 1.0F) gl2psPrintf("fill-opacity=\"%g\" ", rgba[0][3]);
-- gl2psPrintf("cx=\"%g\" cy=\"%g\" r=\"%g\"/>\n",
-- xyz[0][0], xyz[0][1], 0.5 * prim->width);
-- break;
-- case GL2PS_LINE :
-- if(!gl2psSamePosition(gl2ps->lastvertex.xyz, prim->verts[0].xyz) ||
-- !gl2psSameColor(gl2ps->lastrgba, prim->verts[0].rgba) ||
-- gl2ps->lastlinewidth != prim->width ||
-- gl2ps->lastpattern != prim->pattern ||
-- gl2ps->lastfactor != prim->factor){
-- /* End the current line if the new segment does not start where
-- the last one ended, or if the color, the width or the
-- stippling have changed (we will need to use multi-point
-- gradients for smooth-shaded lines) */
-- gl2psEndSVGLine();
-- newline = 1;
-- }
-- else{
-- newline = 0;
-- }
-- gl2ps->lastvertex = prim->verts[1];
-- gl2psSetLastColor(prim->verts[0].rgba);
-- gl2ps->lastlinewidth = prim->width;
-- gl2ps->lastpattern = prim->pattern;
-- gl2ps->lastfactor = prim->factor;
-- if(newline){
-- gl2psSVGGetColorString(rgba[0], col);
-- gl2psPrintf("<polyline fill=\"none\" stroke=\"%s\" stroke-width=\"%g\" ",
-- col, prim->width);
-- if(rgba[0][3] < 1.0F) gl2psPrintf("stroke-opacity=\"%g\" ", rgba[0][3]);
-- gl2psPrintSVGDash(prim->pattern, prim->factor);
-- gl2psPrintf("points=\"%g,%g ", xyz[0][0], xyz[0][1]);
-- }
-- else{
-- gl2psPrintf("%g,%g ", xyz[0][0], xyz[0][1]);
-- }
-- break;
-- case GL2PS_TRIANGLE :
-- gl2psPrintSVGSmoothTriangle(xyz, rgba);
-- break;
-- case GL2PS_QUADRANGLE :
-- gl2psMsg(GL2PS_WARNING, "There should not be any quad left to print");
-- break;
-- case GL2PS_PIXMAP :
-- gl2psPrintSVGPixmap(xyz[0][0], xyz[0][1], prim->data.image);
-- break;
-- case GL2PS_TEXT :
-- gl2psSVGGetColorString(prim->verts[0].rgba, col);
-- gl2psPrintf("<text fill=\"%s\" x=\"%g\" y=\"%g\" font-size=\"%d\" ",
-- col, xyz[0][0], xyz[0][1], prim->data.text->fontsize);
-- if(prim->data.text->angle)
-- gl2psPrintf("transform=\"rotate(%g, %g, %g)\" ",
-- -prim->data.text->angle, xyz[0][0], xyz[0][1]);
-- if(!strcmp(prim->data.text->fontname, "Times-Roman"))
-- gl2psPrintf("font-family=\"Times\">");
-- else if(!strcmp(prim->data.text->fontname, "Times-Bold"))
-- gl2psPrintf("font-family=\"Times\" font-weight=\"bold\">");
-- else if(!strcmp(prim->data.text->fontname, "Times-Italic"))
-- gl2psPrintf("font-family=\"Times\" font-style=\"italic\">");
-- else if(!strcmp(prim->data.text->fontname, "Times-BoldItalic"))
-- gl2psPrintf("font-family=\"Times\" font-style=\"italic\" font-weight=\"bold\">");
-- else if(!strcmp(prim->data.text->fontname, "Helvetica-Bold"))
-- gl2psPrintf("font-family=\"Helvetica\" font-weight=\"bold\">");
-- else if(!strcmp(prim->data.text->fontname, "Helvetica-Oblique"))
-- gl2psPrintf("font-family=\"Helvetica\" font-style=\"oblique\">");
-- else if(!strcmp(prim->data.text->fontname, "Helvetica-BoldOblique"))
-- gl2psPrintf("font-family=\"Helvetica\" font-style=\"oblique\" font-weight=\"bold\">");
-- else if(!strcmp(prim->data.text->fontname, "Courier-Bold"))
-- gl2psPrintf("font-family=\"Courier\" font-weight=\"bold\">");
-- else if(!strcmp(prim->data.text->fontname, "Courier-Oblique"))
-- gl2psPrintf("font-family=\"Courier\" font-style=\"oblique\">");
-- else if(!strcmp(prim->data.text->fontname, "Courier-BoldOblique"))
-- gl2psPrintf("font-family=\"Courier\" font-style=\"oblique\" font-weight=\"bold\">");
-- else
-- gl2psPrintf("font-family=\"%s\">", prim->data.text->fontname);
-- gl2psPrintf("%s</text>\n", prim->data.text->str);
-- break;
-- case GL2PS_SPECIAL :
-- /* alignment contains the format for which the special output text
-- is intended */
-- if(prim->data.text->alignment == GL2PS_SVG)
-- gl2psPrintf("%s\n", prim->data.text->str);
-- break;
-- default :
-- break;
-- }
--}
--
--static void gl2psPrintSVGFooter(void)
--{
-- gl2psPrintf("</g>\n");
-- gl2psPrintf("</svg>\n");
--
-- gl2psPrintGzipFooter();
--}
--
--static void gl2psPrintSVGBeginViewport(GLint viewport[4])
--{
-- GLint index;
-- char col[32];
-- GLfloat rgba[4];
-- int x = viewport[0], y = viewport[1], w = viewport[2], h = viewport[3];
--
-- glRenderMode(GL_FEEDBACK);
--
-- if(gl2ps->header){
-- gl2psPrintSVGHeader();
-- gl2ps->header = GL_FALSE;
-- }
--
-- if(gl2ps->options & GL2PS_DRAW_BACKGROUND){
-- if(gl2ps->colormode == GL_RGBA || gl2ps->colorsize == 0){
-- glGetFloatv(GL_COLOR_CLEAR_VALUE, rgba);
-- }
-- else{
-- glGetIntegerv(GL_INDEX_CLEAR_VALUE, &index);
-- rgba[0] = gl2ps->colormap[index][0];
-- rgba[1] = gl2ps->colormap[index][1];
-- rgba[2] = gl2ps->colormap[index][2];
-- rgba[3] = 1.0F;
-- }
-- gl2psSVGGetColorString(rgba, col);
-- gl2psPrintf("<polygon fill=\"%s\" points=\"%d,%d %d,%d %d,%d %d,%d\"/>\n", col,
-- x, gl2ps->viewport[3] - y,
-- x + w, gl2ps->viewport[3] - y,
-- x + w, gl2ps->viewport[3] - (y + h),
-- x, gl2ps->viewport[3] - (y + h));
-- }
--
-- gl2psPrintf("<clipPath id=\"cp%d%d%d%d\">\n", x, y, w, h);
-- gl2psPrintf(" <polygon points=\"%d,%d %d,%d %d,%d %d,%d\"/>\n",
-- x, gl2ps->viewport[3] - y,
-- x + w, gl2ps->viewport[3] - y,
-- x + w, gl2ps->viewport[3] - (y + h),
-- x, gl2ps->viewport[3] - (y + h));
-- gl2psPrintf("</clipPath>\n");
-- gl2psPrintf("<g clip-path=\"url(#cp%d%d%d%d)\">\n", x, y, w, h);
--}
--
--static GLint gl2psPrintSVGEndViewport(void)
--{
-- GLint res;
--
-- res = gl2psPrintPrimitives();
-- gl2psPrintf("</g>\n");
-- return res;
--}
--
--static void gl2psPrintSVGFinalPrimitive(void)
--{
-- /* End any remaining line, if any */
-- gl2psEndSVGLine();
--}
--
--/* definition of the SVG backend */
--
--static GL2PSbackend gl2psSVG = {
-- gl2psPrintSVGHeader,
-- gl2psPrintSVGFooter,
-- gl2psPrintSVGBeginViewport,
-- gl2psPrintSVGEndViewport,
-- gl2psPrintSVGPrimitive,
-- gl2psPrintSVGFinalPrimitive,
-- "svg",
-- "Scalable Vector Graphics"
--};
--
--/*********************************************************************
-- *
-- * PGF routines
-- *
-- *********************************************************************/
--
--static void gl2psPrintPGFColor(GL2PSrgba rgba)
--{
-- if(!gl2psSameColor(gl2ps->lastrgba, rgba)){
-- gl2psSetLastColor(rgba);
-- fprintf(gl2ps->stream, "\\color[rgb]{%f,%f,%f}\n", rgba[0], rgba[1], rgba[2]);
-- }
--}
--
--static void gl2psPrintPGFHeader(void)
--{
-- time_t now;
--
-- time(&now);
--
-- fprintf(gl2ps->stream,
-- "%% Title: %s\n"
-- "%% Creator: GL2PS %d.%d.%d%s, %s\n"
-- "%% For: %s\n"
-- "%% CreationDate: %s",
-- gl2ps->title, GL2PS_MAJOR_VERSION, GL2PS_MINOR_VERSION,
-- GL2PS_PATCH_VERSION, GL2PS_EXTRA_VERSION, GL2PS_COPYRIGHT,
-- gl2ps->producer, ctime(&now));
--
-- fprintf(gl2ps->stream, "\\begin{pgfpicture}\n");
-- if(gl2ps->options & GL2PS_DRAW_BACKGROUND){
-- gl2psPrintPGFColor(gl2ps->bgcolor);
-- fprintf(gl2ps->stream,
-- "\\pgfpathrectanglecorners{"
-- "\\pgfpoint{%dpt}{%dpt}}{\\pgfpoint{%dpt}{%dpt}}\n"
-- "\\pgfusepath{fill}\n",
-- (int)gl2ps->viewport[0], (int)gl2ps->viewport[1],
-- (int)gl2ps->viewport[2], (int)gl2ps->viewport[3]);
-- }
--}
--
--static void gl2psPrintPGFDash(GLushort pattern, GLint factor)
--{
-- int i, n, array[10];
--
-- if(pattern == gl2ps->lastpattern && factor == gl2ps->lastfactor)
-- return;
--
-- gl2ps->lastpattern = pattern;
-- gl2ps->lastfactor = factor;
--
-- if(!pattern || !factor){
-- /* solid line */
-- fprintf(gl2ps->stream, "\\pgfsetdash{}{0pt}\n");
-- }
-- else{
-- gl2psParseStipplePattern(pattern, factor, &n, array);
-- fprintf(gl2ps->stream, "\\pgfsetdash{");
-- for(i = 0; i < n; i++) fprintf(gl2ps->stream, "{%dpt}", array[i]);
-- fprintf(gl2ps->stream, "}{0pt}\n");
-- }
--}
--
--static const char *gl2psPGFTextAlignment(int align)
--{
-- switch(align){
-- case GL2PS_TEXT_C : return "center";
-- case GL2PS_TEXT_CL : return "west";
-- case GL2PS_TEXT_CR : return "east";
-- case GL2PS_TEXT_B : return "south";
-- case GL2PS_TEXT_BR : return "south east";
-- case GL2PS_TEXT_T : return "north";
-- case GL2PS_TEXT_TL : return "north west";
-- case GL2PS_TEXT_TR : return "north east";
-- case GL2PS_TEXT_BL :
-- default : return "south west";
-- }
--}
--
--static void gl2psPrintPGFPrimitive(void *data)
--{
-- GL2PSprimitive *prim;
--
-- prim = *(GL2PSprimitive**)data;
--
-- switch(prim->type){
-- case GL2PS_POINT :
-- /* Points in openGL are rectangular */
-- gl2psPrintPGFColor(prim->verts[0].rgba);
-- fprintf(gl2ps->stream,
-- "\\pgfpathrectangle{\\pgfpoint{%fpt}{%fpt}}"
-- "{\\pgfpoint{%fpt}{%fpt}}\n\\pgfusepath{fill}\n",
-- prim->verts[0].xyz[0]-0.5*prim->width,
-- prim->verts[0].xyz[1]-0.5*prim->width,
-- prim->width,prim->width);
-- break;
-- case GL2PS_LINE :
-- gl2psPrintPGFColor(prim->verts[0].rgba);
-- if(gl2ps->lastlinewidth != prim->width){
-- gl2ps->lastlinewidth = prim->width;
-- fprintf(gl2ps->stream, "\\pgfsetlinewidth{%fpt}\n", gl2ps->lastlinewidth);
-- }
-- gl2psPrintPGFDash(prim->pattern, prim->factor);
-- fprintf(gl2ps->stream,
-- "\\pgfpathmoveto{\\pgfpoint{%fpt}{%fpt}}\n"
-- "\\pgflineto{\\pgfpoint{%fpt}{%fpt}}\n"
-- "\\pgfusepath{stroke}\n",
-- prim->verts[1].xyz[0], prim->verts[1].xyz[1],
-- prim->verts[0].xyz[0], prim->verts[0].xyz[1]);
-- break;
-- case GL2PS_TRIANGLE :
-- if(gl2ps->lastlinewidth != 0){
-- gl2ps->lastlinewidth = 0;
-- fprintf(gl2ps->stream, "\\pgfsetlinewidth{0.01pt}\n");
-- }
-- gl2psPrintPGFColor(prim->verts[0].rgba);
-- fprintf(gl2ps->stream,
-- "\\pgfpathmoveto{\\pgfpoint{%fpt}{%fpt}}\n"
-- "\\pgflineto{\\pgfpoint{%fpt}{%fpt}}\n"
-- "\\pgflineto{\\pgfpoint{%fpt}{%fpt}}\n"
-- "\\pgfpathclose\n"
-- "\\pgfusepath{fill,stroke}\n",
-- prim->verts[2].xyz[0], prim->verts[2].xyz[1],
-- prim->verts[1].xyz[0], prim->verts[1].xyz[1],
-- prim->verts[0].xyz[0], prim->verts[0].xyz[1]);
-- break;
-- case GL2PS_TEXT :
-- fprintf(gl2ps->stream, "{\n\\pgftransformshift{\\pgfpoint{%fpt}{%fpt}}\n",
-- prim->verts[0].xyz[0], prim->verts[0].xyz[1]);
--
-- if(prim->data.text->angle)
-- fprintf(gl2ps->stream, "\\pgftransformrotate{%f}{", prim->data.text->angle);
--
-- fprintf(gl2ps->stream, "\\pgfnode{rectangle}{%s}{\\fontsize{%d}{0}\\selectfont",
-- gl2psPGFTextAlignment(prim->data.text->alignment),
-- prim->data.text->fontsize);
--
-- fprintf(gl2ps->stream, "\\textcolor[rgb]{%g,%g,%g}{{%s}}",
-- prim->verts[0].rgba[0], prim->verts[0].rgba[1],
-- prim->verts[0].rgba[2], prim->data.text->str);
--
-- fprintf(gl2ps->stream, "}{}{\\pgfusepath{discard}}}\n");
-- break;
-- case GL2PS_SPECIAL :
-- /* alignment contains the format for which the special output text
-- is intended */
-- if (prim->data.text->alignment == GL2PS_PGF)
-- fprintf(gl2ps->stream, "%s\n", prim->data.text->str);
-- break;
-- default :
-- break;
-- }
--}
--
--static void gl2psPrintPGFFooter(void)
--{
-- fprintf(gl2ps->stream, "\\end{pgfpicture}\n");
--}
--
--static void gl2psPrintPGFBeginViewport(GLint viewport[4])
--{
-- GLint index;
-- GLfloat rgba[4];
-- int x = viewport[0], y = viewport[1], w = viewport[2], h = viewport[3];
--
-- glRenderMode(GL_FEEDBACK);
--
-- if(gl2ps->header){
-- gl2psPrintPGFHeader();
-- gl2ps->header = GL_FALSE;
-- }
--
-- fprintf(gl2ps->stream, "\\begin{pgfscope}\n");
-- if(gl2ps->options & GL2PS_DRAW_BACKGROUND){
-- if(gl2ps->colormode == GL_RGBA || gl2ps->colorsize == 0){
-- glGetFloatv(GL_COLOR_CLEAR_VALUE, rgba);
-- }
-- else{
-- glGetIntegerv(GL_INDEX_CLEAR_VALUE, &index);
-- rgba[0] = gl2ps->colormap[index][0];
-- rgba[1] = gl2ps->colormap[index][1];
-- rgba[2] = gl2ps->colormap[index][2];
-- rgba[3] = 1.0F;
-- }
-- gl2psPrintPGFColor(rgba);
-- fprintf(gl2ps->stream,
-- "\\pgfpathrectangle{\\pgfpoint{%dpt}{%dpt}}"
-- "{\\pgfpoint{%dpt}{%dpt}}\n"
-- "\\pgfusepath{fill}\n",
-- x, y, w, h);
-- }
--
-- fprintf(gl2ps->stream,
-- "\\pgfpathrectangle{\\pgfpoint{%dpt}{%dpt}}"
-- "{\\pgfpoint{%dpt}{%dpt}}\n"
-- "\\pgfusepath{clip}\n",
-- x, y, w, h);
--}
--
--static GLint gl2psPrintPGFEndViewport(void)
--{
-- GLint res;
-- res = gl2psPrintPrimitives();
-- fprintf(gl2ps->stream, "\\end{pgfscope}\n");
-- return res;
--}
--
--static void gl2psPrintPGFFinalPrimitive(void)
--{
--}
--
--/* definition of the PGF backend */
--
--static GL2PSbackend gl2psPGF = {
-- gl2psPrintPGFHeader,
-- gl2psPrintPGFFooter,
-- gl2psPrintPGFBeginViewport,
-- gl2psPrintPGFEndViewport,
-- gl2psPrintPGFPrimitive,
-- gl2psPrintPGFFinalPrimitive,
-- "tex",
-- "PGF Latex Graphics"
--};
--
--/*********************************************************************
-- *
-- * General primitive printing routine
-- *
-- *********************************************************************/
--
--/* Warning: the ordering of the backends must match the format
-- #defines in gl2ps.h */
--
--static GL2PSbackend *gl2psbackends[] = {
-- &gl2psPS, /* 0 */
-- &gl2psEPS, /* 1 */
-- &gl2psTEX, /* 2 */
-- &gl2psPDF, /* 3 */
-- &gl2psSVG, /* 4 */
-- &gl2psPGF /* 5 */
--};
--
--static void gl2psComputeTightBoundingBox(void *data)
--{
-- GL2PSprimitive *prim;
-- int i;
--
-- prim = *(GL2PSprimitive**)data;
--
-- for(i = 0; i < prim->numverts; i++){
-- if(prim->verts[i].xyz[0] < gl2ps->viewport[0])
-- gl2ps->viewport[0] = (GLint)prim->verts[i].xyz[0];
-- if(prim->verts[i].xyz[0] > gl2ps->viewport[2])
-- gl2ps->viewport[2] = (GLint)(prim->verts[i].xyz[0] + 0.5F);
-- if(prim->verts[i].xyz[1] < gl2ps->viewport[1])
-- gl2ps->viewport[1] = (GLint)prim->verts[i].xyz[1];
-- if(prim->verts[i].xyz[1] > gl2ps->viewport[3])
-- gl2ps->viewport[3] = (GLint)(prim->verts[i].xyz[1] + 0.5F);
-- }
--}
--
--static GLint gl2psPrintPrimitives(void)
--{
-- GL2PSbsptree *root;
-- GL2PSxyz eye = {0.0F, 0.0F, 100.0F * GL2PS_ZSCALE};
-- GLint used;
--
-- used = glRenderMode(GL_RENDER);
--
-- if(used < 0){
-- gl2psMsg(GL2PS_INFO, "OpenGL feedback buffer overflow");
-- return GL2PS_OVERFLOW;
-- }
--
-- if(used > 0)
-- gl2psParseFeedbackBuffer(used);
--
-- gl2psRescaleAndOffset();
--
-- if(gl2ps->header){
-- if(gl2psListNbr(gl2ps->primitives) &&
-- (gl2ps->options & GL2PS_TIGHT_BOUNDING_BOX)){
-- gl2ps->viewport[0] = gl2ps->viewport[1] = 100000;
-- gl2ps->viewport[2] = gl2ps->viewport[3] = -100000;
-- gl2psListAction(gl2ps->primitives, gl2psComputeTightBoundingBox);
-- }
-- (gl2psbackends[gl2ps->format]->printHeader)();
-- gl2ps->header = GL_FALSE;
-- }
--
-- if(!gl2psListNbr(gl2ps->primitives)){
-- /* empty feedback buffer and/or nothing else to print */
-- return GL2PS_NO_FEEDBACK;
-- }
--
-- switch(gl2ps->sort){
-- case GL2PS_NO_SORT :
-- gl2psListAction(gl2ps->primitives, gl2psbackends[gl2ps->format]->printPrimitive);
-- gl2psListAction(gl2ps->primitives, gl2psFreePrimitive);
-- /* reset the primitive list, waiting for the next viewport */
-- gl2psListReset(gl2ps->primitives);
-- break;
-- case GL2PS_SIMPLE_SORT :
-- gl2psListSort(gl2ps->primitives, gl2psCompareDepth);
-- if(gl2ps->options & GL2PS_OCCLUSION_CULL){
-- gl2psListActionInverse(gl2ps->primitives, gl2psAddInImageTree);
-- gl2psFreeBspImageTree(&gl2ps->imagetree);
-- }
-- gl2psListAction(gl2ps->primitives, gl2psbackends[gl2ps->format]->printPrimitive);
-- gl2psListAction(gl2ps->primitives, gl2psFreePrimitive);
-- /* reset the primitive list, waiting for the next viewport */
-- gl2psListReset(gl2ps->primitives);
-- break;
-- case GL2PS_BSP_SORT :
-- root = (GL2PSbsptree*)gl2psMalloc(sizeof(GL2PSbsptree));
-- gl2psBuildBspTree(root, gl2ps->primitives);
-- if(GL_TRUE == gl2ps->boundary) gl2psBuildPolygonBoundary(root);
-- if(gl2ps->options & GL2PS_OCCLUSION_CULL){
-- gl2psTraverseBspTree(root, eye, -GL2PS_EPSILON, gl2psLess,
-- gl2psAddInImageTree, 1);
-- gl2psFreeBspImageTree(&gl2ps->imagetree);
-- }
-- gl2psTraverseBspTree(root, eye, GL2PS_EPSILON, gl2psGreater,
-- gl2psbackends[gl2ps->format]->printPrimitive, 0);
-- gl2psFreeBspTree(&root);
-- /* reallocate the primitive list (it's been deleted by
-- gl2psBuildBspTree) in case there is another viewport */
-- gl2ps->primitives = gl2psListCreate(500, 500, sizeof(GL2PSprimitive*));
-- break;
-- }
-- gl2psbackends[gl2ps->format]->printFinalPrimitive();
--
-- return GL2PS_SUCCESS;
--}
--
--/*********************************************************************
-- *
-- * Public routines
-- *
-- *********************************************************************/
--
--GL2PSDLL_API GLint gl2psBeginPage(const char *title, const char *producer,
-- GLint viewport[4], GLint format, GLint sort,
-- GLint options, GLint colormode,
-- GLint colorsize, GL2PSrgba *colormap,
-- GLint nr, GLint ng, GLint nb, GLint buffersize,
-- FILE *stream, const char *filename)
--{
-- GLint index;
-- int i;
--
-- if(gl2ps){
-- gl2psMsg(GL2PS_ERROR, "gl2psBeginPage called in wrong program state");
-- return GL2PS_ERROR;
-- }
--
-- gl2ps = (GL2PScontext*)gl2psMalloc(sizeof(GL2PScontext));
--
-- if(format >= 0 && format < (GLint)(sizeof(gl2psbackends) / sizeof(gl2psbackends[0]))){
-- gl2ps->format = format;
-- }
-- else {
-- gl2psMsg(GL2PS_ERROR, "Unknown output format: %d", format);
-- gl2psFree(gl2ps);
-- gl2ps = NULL;
-- return GL2PS_ERROR;
-- }
--
-- switch(sort){
-- case GL2PS_NO_SORT :
-- case GL2PS_SIMPLE_SORT :
-- case GL2PS_BSP_SORT :
-- gl2ps->sort = sort;
-- break;
-- default :
-- gl2psMsg(GL2PS_ERROR, "Unknown sorting algorithm: %d", sort);
-- gl2psFree(gl2ps);
-- gl2ps = NULL;
-- return GL2PS_ERROR;
-- }
--
-- if(stream){
-- gl2ps->stream = stream;
-- }
-- else{
-- gl2psMsg(GL2PS_ERROR, "Bad file pointer");
-- gl2psFree(gl2ps);
-- gl2ps = NULL;
-- return GL2PS_ERROR;
-- }
--
-- gl2ps->header = GL_TRUE;
-- gl2ps->maxbestroot = 10;
-- gl2ps->options = options;
-- gl2ps->compress = NULL;
-- gl2ps->imagemap_head = NULL;
-- gl2ps->imagemap_tail = NULL;
--
-- if(gl2ps->options & GL2PS_USE_CURRENT_VIEWPORT){
-- glGetIntegerv(GL_VIEWPORT, gl2ps->viewport);
-- }
-- else{
-- for(i = 0; i < 4; i++){
-- gl2ps->viewport[i] = viewport[i];
-- }
-- }
--
-- if(!gl2ps->viewport[2] || !gl2ps->viewport[3]){
-- gl2psMsg(GL2PS_ERROR, "Incorrect viewport (x=%d, y=%d, width=%d, height=%d)",
-- gl2ps->viewport[0], gl2ps->viewport[1],
-- gl2ps->viewport[2], gl2ps->viewport[3]);
-- gl2psFree(gl2ps);
-- gl2ps = NULL;
-- return GL2PS_ERROR;
-- }
--
-- gl2ps->threshold[0] = nr ? 1.0F / (GLfloat)nr : 0.064F;
-- gl2ps->threshold[1] = ng ? 1.0F / (GLfloat)ng : 0.034F;
-- gl2ps->threshold[2] = nb ? 1.0F / (GLfloat)nb : 0.100F;
-- gl2ps->colormode = colormode;
-- gl2ps->buffersize = buffersize > 0 ? buffersize : 2048 * 2048;
-- for(i = 0; i < 3; i++){
-- gl2ps->lastvertex.xyz[i] = -1.0F;
-- }
-- for(i = 0; i < 4; i++){
-- gl2ps->lastvertex.rgba[i] = -1.0F;
-- gl2ps->lastrgba[i] = -1.0F;
-- }
-- gl2ps->lastlinewidth = -1.0F;
-- gl2ps->lastpattern = 0;
-- gl2ps->lastfactor = 0;
-- gl2ps->imagetree = NULL;
-- gl2ps->primitivetoadd = NULL;
-- gl2ps->zerosurfacearea = GL_FALSE;
-- gl2ps->pdfprimlist = NULL;
-- gl2ps->pdfgrouplist = NULL;
-- gl2ps->xreflist = NULL;
--
-- /* get default blending mode from current OpenGL state (enabled by
-- default for SVG) */
-- gl2ps->blending = (gl2ps->format == GL2PS_SVG) ? GL_TRUE : glIsEnabled(GL_BLEND);
-- glGetIntegerv(GL_BLEND_SRC, &gl2ps->blendfunc[0]);
-- glGetIntegerv(GL_BLEND_DST, &gl2ps->blendfunc[1]);
--
-- if(gl2ps->colormode == GL_RGBA){
-- gl2ps->colorsize = 0;
-- gl2ps->colormap = NULL;
-- glGetFloatv(GL_COLOR_CLEAR_VALUE, gl2ps->bgcolor);
-- }
-- else if(gl2ps->colormode == GL_COLOR_INDEX){
-- if(!colorsize || !colormap){
-- gl2psMsg(GL2PS_ERROR, "Missing colormap for GL_COLOR_INDEX rendering");
-- gl2psFree(gl2ps);
-- gl2ps = NULL;
-- return GL2PS_ERROR;
-- }
-- gl2ps->colorsize = colorsize;
-- gl2ps->colormap = (GL2PSrgba*)gl2psMalloc(gl2ps->colorsize * sizeof(GL2PSrgba));
-- memcpy(gl2ps->colormap, colormap, gl2ps->colorsize * sizeof(GL2PSrgba));
-- glGetIntegerv(GL_INDEX_CLEAR_VALUE, &index);
-- gl2ps->bgcolor[0] = gl2ps->colormap[index][0];
-- gl2ps->bgcolor[1] = gl2ps->colormap[index][1];
-- gl2ps->bgcolor[2] = gl2ps->colormap[index][2];
-- gl2ps->bgcolor[3] = 1.0F;
-- }
-- else{
-- gl2psMsg(GL2PS_ERROR, "Unknown color mode in gl2psBeginPage");
-- gl2psFree(gl2ps);
-- gl2ps = NULL;
-- return GL2PS_ERROR;
-- }
--
-- if(!title){
-- gl2ps->title = (char*)gl2psMalloc(sizeof(char));
-- gl2ps->title[0] = '\0';
-- }
-- else{
-- gl2ps->title = (char*)gl2psMalloc((strlen(title)+1)*sizeof(char));
-- strcpy(gl2ps->title, title);
-- }
--
-- if(!producer){
-- gl2ps->producer = (char*)gl2psMalloc(sizeof(char));
-- gl2ps->producer[0] = '\0';
-- }
-- else{
-- gl2ps->producer = (char*)gl2psMalloc((strlen(producer)+1)*sizeof(char));
-- strcpy(gl2ps->producer, producer);
-- }
--
-- if(!filename){
-- gl2ps->filename = (char*)gl2psMalloc(sizeof(char));
-- gl2ps->filename[0] = '\0';
-- }
-- else{
-- gl2ps->filename = (char*)gl2psMalloc((strlen(filename)+1)*sizeof(char));
-- strcpy(gl2ps->filename, filename);
-- }
--
-- gl2ps->primitives = gl2psListCreate(500, 500, sizeof(GL2PSprimitive*));
-- gl2ps->auxprimitives = gl2psListCreate(100, 100, sizeof(GL2PSprimitive*));
-- gl2ps->feedback = (GLfloat*)gl2psMalloc(gl2ps->buffersize * sizeof(GLfloat));
-- glFeedbackBuffer(gl2ps->buffersize, GL_3D_COLOR, gl2ps->feedback);
-- glRenderMode(GL_FEEDBACK);
--
-- return GL2PS_SUCCESS;
--}
--
--GL2PSDLL_API GLint gl2psEndPage(void)
--{
-- GLint res;
--
-- if(!gl2ps) return GL2PS_UNINITIALIZED;
--
-- res = gl2psPrintPrimitives();
--
-- if(res != GL2PS_OVERFLOW)
-- (gl2psbackends[gl2ps->format]->printFooter)();
--
-- fflush(gl2ps->stream);
--
-- gl2psListDelete(gl2ps->primitives);
-- gl2psListDelete(gl2ps->auxprimitives);
-- gl2psFreeImagemap(gl2ps->imagemap_head);
-- gl2psFree(gl2ps->colormap);
-- gl2psFree(gl2ps->title);
-- gl2psFree(gl2ps->producer);
-- gl2psFree(gl2ps->filename);
-- gl2psFree(gl2ps->feedback);
-- gl2psFree(gl2ps);
-- gl2ps = NULL;
--
-- return res;
--}
--
--GL2PSDLL_API GLint gl2psBeginViewport(GLint viewport[4])
--{
-- if(!gl2ps) return GL2PS_UNINITIALIZED;
--
-- (gl2psbackends[gl2ps->format]->beginViewport)(viewport);
--
-- return GL2PS_SUCCESS;
--}
--
--GL2PSDLL_API GLint gl2psEndViewport(void)
--{
-- GLint res;
--
-- if(!gl2ps) return GL2PS_UNINITIALIZED;
--
-- res = (gl2psbackends[gl2ps->format]->endViewport)();
--
-- /* reset last used colors, line widths */
-- gl2ps->lastlinewidth = -1.0F;
--
-- return res;
--}
--
--GL2PSDLL_API GLint gl2psTextOpt(const char *str, const char *fontname,
-- GLshort fontsize, GLint alignment, GLfloat angle)
--{
-- return gl2psAddText(GL2PS_TEXT, str, fontname, fontsize, alignment, angle);
--}
--
--GL2PSDLL_API GLint gl2psText(const char *str, const char *fontname, GLshort fontsize)
--{
-- return gl2psAddText(GL2PS_TEXT, str, fontname, fontsize, GL2PS_TEXT_BL, 0.0F);
--}
--
--GL2PSDLL_API GLint gl2psSpecial(GLint format, const char *str)
--{
-- return gl2psAddText(GL2PS_SPECIAL, str, "", 0, format, 0.0F);
--}
--
--GL2PSDLL_API GLint gl2psDrawPixels(GLsizei width, GLsizei height,
-- GLint xorig, GLint yorig,
-- GLenum format, GLenum type,
-- const void *pixels)
--{
-- int size, i;
-- GLfloat pos[4], *piv;
-- GL2PSprimitive *prim;
-- GLboolean valid;
--
-- if(!gl2ps || !pixels) return GL2PS_UNINITIALIZED;
--
-- if((width <= 0) || (height <= 0)) return GL2PS_ERROR;
--
-- if(gl2ps->options & GL2PS_NO_PIXMAP) return GL2PS_SUCCESS;
--
-- if((format != GL_RGB && format != GL_RGBA) || type != GL_FLOAT){
-- gl2psMsg(GL2PS_ERROR, "gl2psDrawPixels only implemented for "
-- "GL_RGB/GL_RGBA, GL_FLOAT pixels");
-- return GL2PS_ERROR;
-- }
--
-- glGetBooleanv(GL_CURRENT_RASTER_POSITION_VALID, &valid);
-- if(GL_FALSE == valid) return GL2PS_SUCCESS; /* the primitive is culled */
--
-- glGetFloatv(GL_CURRENT_RASTER_POSITION, pos);
--
-- prim = (GL2PSprimitive*)gl2psMalloc(sizeof(GL2PSprimitive));
-- prim->type = GL2PS_PIXMAP;
-- prim->boundary = 0;
-- prim->numverts = 1;
-- prim->verts = (GL2PSvertex*)gl2psMalloc(sizeof(GL2PSvertex));
-- prim->verts[0].xyz[0] = pos[0] + xorig;
-- prim->verts[0].xyz[1] = pos[1] + yorig;
-- prim->verts[0].xyz[2] = pos[2];
-- prim->culled = 0;
-- prim->offset = 0;
-- prim->pattern = 0;
-- prim->factor = 0;
-- prim->width = 1;
-- glGetFloatv(GL_CURRENT_RASTER_COLOR, prim->verts[0].rgba);
-- prim->data.image = (GL2PSimage*)gl2psMalloc(sizeof(GL2PSimage));
-- prim->data.image->width = width;
-- prim->data.image->height = height;
-- prim->data.image->format = format;
-- prim->data.image->type = type;
--
-- switch(format){
-- case GL_RGBA:
-- if(gl2ps->options & GL2PS_NO_BLENDING || !gl2ps->blending){
-- /* special case: blending turned off */
-- prim->data.image->format = GL_RGB;
-- size = height * width * 3;
-- prim->data.image->pixels = (GLfloat*)gl2psMalloc(size * sizeof(GLfloat));
-- piv = (GLfloat*)pixels;
-- for(i = 0; i < size; ++i, ++piv){
-- prim->data.image->pixels[i] = *piv;
-- if(!((i+1)%3))
-- ++piv;
-- }
-- }
-- else{
-- size = height * width * 4;
-- prim->data.image->pixels = (GLfloat*)gl2psMalloc(size * sizeof(GLfloat));
-- memcpy(prim->data.image->pixels, pixels, size * sizeof(GLfloat));
-- }
-- break;
-- case GL_RGB:
-- default:
-- size = height * width * 3;
-- prim->data.image->pixels = (GLfloat*)gl2psMalloc(size * sizeof(GLfloat));
-- memcpy(prim->data.image->pixels, pixels, size * sizeof(GLfloat));
-- break;
-- }
--
-- gl2psListAdd(gl2ps->auxprimitives, &prim);
-- glPassThrough(GL2PS_DRAW_PIXELS_TOKEN);
--
-- return GL2PS_SUCCESS;
--}
--
--GL2PSDLL_API GLint gl2psDrawImageMap(GLsizei width, GLsizei height,
-- const GLfloat position[3],
-- const unsigned char *imagemap){
-- int size, i;
-- int sizeoffloat = sizeof(GLfloat);
--
-- if(!gl2ps || !imagemap) return GL2PS_UNINITIALIZED;
--
-- if((width <= 0) || (height <= 0)) return GL2PS_ERROR;
--
-- size = height + height * ((width - 1) / 8);
-- glPassThrough(GL2PS_IMAGEMAP_TOKEN);
-- glBegin(GL_POINTS);
-- glVertex3f(position[0], position[1],position[2]);
-- glEnd();
-- glPassThrough((GLfloat)width);
-- glPassThrough((GLfloat)height);
-- for(i = 0; i < size; i += sizeoffloat){
-- float *value = (float*)imagemap;
-- glPassThrough(*value);
-- imagemap += sizeoffloat;
-- }
-- return GL2PS_SUCCESS;
--}
--
--GL2PSDLL_API GLint gl2psEnable(GLint mode)
--{
-- GLint tmp;
--
-- if(!gl2ps) return GL2PS_UNINITIALIZED;
--
-- switch(mode){
-- case GL2PS_POLYGON_OFFSET_FILL :
-- glPassThrough(GL2PS_BEGIN_OFFSET_TOKEN);
-- glGetFloatv(GL_POLYGON_OFFSET_FACTOR, &gl2ps->offset[0]);
-- glGetFloatv(GL_POLYGON_OFFSET_UNITS, &gl2ps->offset[1]);
-- break;
-- case GL2PS_POLYGON_BOUNDARY :
-- glPassThrough(GL2PS_BEGIN_BOUNDARY_TOKEN);
-- break;
-- case GL2PS_LINE_STIPPLE :
-- glPassThrough(GL2PS_BEGIN_STIPPLE_TOKEN);
-- glGetIntegerv(GL_LINE_STIPPLE_PATTERN, &tmp);
-- glPassThrough((GLfloat)tmp);
-- glGetIntegerv(GL_LINE_STIPPLE_REPEAT, &tmp);
-- glPassThrough((GLfloat)tmp);
-- break;
-- case GL2PS_BLEND :
-- glPassThrough(GL2PS_BEGIN_BLEND_TOKEN);
-- break;
-- default :
-- gl2psMsg(GL2PS_WARNING, "Unknown mode in gl2psEnable: %d", mode);
-- return GL2PS_WARNING;
-- }
--
-- return GL2PS_SUCCESS;
--}
--
--GL2PSDLL_API GLint gl2psDisable(GLint mode)
--{
-- if(!gl2ps) return GL2PS_UNINITIALIZED;
--
-- switch(mode){
-- case GL2PS_POLYGON_OFFSET_FILL :
-- glPassThrough(GL2PS_END_OFFSET_TOKEN);
-- break;
-- case GL2PS_POLYGON_BOUNDARY :
-- glPassThrough(GL2PS_END_BOUNDARY_TOKEN);
-- break;
-- case GL2PS_LINE_STIPPLE :
-- glPassThrough(GL2PS_END_STIPPLE_TOKEN);
-- break;
-- case GL2PS_BLEND :
-- glPassThrough(GL2PS_END_BLEND_TOKEN);
-- break;
-- default :
-- gl2psMsg(GL2PS_WARNING, "Unknown mode in gl2psDisable: %d", mode);
-- return GL2PS_WARNING;
-- }
--
-- return GL2PS_SUCCESS;
--}
--
--GL2PSDLL_API GLint gl2psPointSize(GLfloat value)
--{
-- if(!gl2ps) return GL2PS_UNINITIALIZED;
--
-- glPassThrough(GL2PS_POINT_SIZE_TOKEN);
-- glPassThrough(value);
--
-- return GL2PS_SUCCESS;
--}
--
--GL2PSDLL_API GLint gl2psLineWidth(GLfloat value)
--{
-- if(!gl2ps) return GL2PS_UNINITIALIZED;
--
-- glPassThrough(GL2PS_LINE_WIDTH_TOKEN);
-- glPassThrough(value);
--
-- return GL2PS_SUCCESS;
--}
--
--GL2PSDLL_API GLint gl2psBlendFunc(GLenum sfactor, GLenum dfactor)
--{
-- if(!gl2ps) return GL2PS_UNINITIALIZED;
--
-- if(GL_FALSE == gl2psSupportedBlendMode(sfactor, dfactor))
-- return GL2PS_WARNING;
--
-- glPassThrough(GL2PS_SRC_BLEND_TOKEN);
-- glPassThrough((GLfloat)sfactor);
-- glPassThrough(GL2PS_DST_BLEND_TOKEN);
-- glPassThrough((GLfloat)dfactor);
--
-- return GL2PS_SUCCESS;
--}
--
--GL2PSDLL_API GLint gl2psSetOptions(GLint options)
--{
-- if(!gl2ps) return GL2PS_UNINITIALIZED;
--
-- gl2ps->options = options;
--
-- return GL2PS_SUCCESS;
--}
--
--GL2PSDLL_API GLint gl2psGetOptions(GLint *options)
--{
-- if(!gl2ps) {
-- *options = 0;
-- return GL2PS_UNINITIALIZED;
-- }
--
-- *options = gl2ps->options;
--
-- return GL2PS_SUCCESS;
--}
--
--GL2PSDLL_API const char *gl2psGetFileExtension(GLint format)
--{
-- if(format >= 0 && format < (GLint)(sizeof(gl2psbackends) / sizeof(gl2psbackends[0])))
-- return gl2psbackends[format]->file_extension;
-- else
-- return "Unknown format";
--}
--
--GL2PSDLL_API const char *gl2psGetFormatDescription(GLint format)
--{
-- if(format >= 0 && format < (GLint)(sizeof(gl2psbackends) / sizeof(gl2psbackends[0])))
-- return gl2psbackends[format]->description;
-- else
-- return "Unknown format";
--}
---- a/Graphics/gl2ps.h
-+++ /dev/null
-@@ -1,200 +0,0 @@
--/*
-- * GL2PS, an OpenGL to PostScript Printing Library
-- * Copyright (C) 1999-2009 C. Geuzaine
-- *
-- * This program is free software; you can redistribute it and/or
-- * modify it under the terms of either:
-- *
-- * a) the GNU Library General Public License as published by the Free
-- * Software Foundation, either version 2 of the License, or (at your
-- * option) any later version; or
-- *
-- * b) the GL2PS License as published by Christophe Geuzaine, either
-- * version 2 of the License, or (at your option) any later version.
-- *
-- * This program is distributed in the hope that it will be useful, but
-- * WITHOUT ANY WARRANTY; without even the implied warranty of
-- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See either
-- * the GNU Library General Public License or the GL2PS License for
-- * more details.
-- *
-- * You should have received a copy of the GNU Library General Public
-- * License along with this library in the file named "COPYING.LGPL";
-- * if not, write to the Free Software Foundation, Inc., 675 Mass Ave,
-- * Cambridge, MA 02139, USA.
-- *
-- * You should have received a copy of the GL2PS License with this
-- * library in the file named "COPYING.GL2PS"; if not, I will be glad
-- * to provide one.
-- *
-- * For the latest info about gl2ps and a full list of contributors,
-- * see http://www.geuz.org/gl2ps/.
-- *
-- * Please report all bugs and problems to <gl2ps at geuz.org>.
-- */
--
--#ifndef __GL2PS_H__
--#define __GL2PS_H__
--
--#include <stdio.h>
--#include <stdlib.h>
--#include "GmshConfig.h"
--
--/* Define GL2PSDLL at compile time to build a Windows DLL */
--
--#if defined(WIN32) || defined(_WIN32) || defined(__WIN32__) || defined(__NT__)
--# if defined(_MSC_VER)
--# pragma warning(disable:4115)
--# pragma warning(disable:4996)
--# endif
--# include <windows.h>
--# if defined(GL2PSDLL)
--# if defined(GL2PSDLL_EXPORTS)
--# define GL2PSDLL_API __declspec(dllexport)
--# else
--# define GL2PSDLL_API __declspec(dllimport)
--# endif
--# else
--# define GL2PSDLL_API
--# endif
--#else
--# define GL2PSDLL_API
--#endif
--
--#if defined(__APPLE__) || defined(HAVE_OPENGL_GL_H)
--# include <OpenGL/gl.h>
--#else
--# include <GL/gl.h>
--#endif
--
--/* Support for compressed PostScript/PDF/SVG and for embedded PNG
-- images in SVG */
--
--#if defined(HAVE_ZLIB) || defined(HAVE_LIBZ)
--# define GL2PS_HAVE_ZLIB
--# if defined(HAVE_LIBPNG) || defined(HAVE_PNG)
--# define GL2PS_HAVE_LIBPNG
--# endif
--#endif
--
--/* Version number */
--
--#define GL2PS_MAJOR_VERSION 1
--#define GL2PS_MINOR_VERSION 3
--#define GL2PS_PATCH_VERSION 5
--#define GL2PS_EXTRA_VERSION ""
--
--#define GL2PS_VERSION (GL2PS_MAJOR_VERSION + \
-- 0.01 * GL2PS_MINOR_VERSION + \
-- 0.0001 * GL2PS_PATCH_VERSION)
--
--#define GL2PS_COPYRIGHT "(C) 1999-2009 C. Geuzaine"
--
--/* Output file formats (the values and the ordering are important!) */
--
--#define GL2PS_PS 0
--#define GL2PS_EPS 1
--#define GL2PS_TEX 2
--#define GL2PS_PDF 3
--#define GL2PS_SVG 4
--#define GL2PS_PGF 5
--
--/* Sorting algorithms */
--
--#define GL2PS_NO_SORT 1
--#define GL2PS_SIMPLE_SORT 2
--#define GL2PS_BSP_SORT 3
--
--/* Message levels and error codes */
--
--#define GL2PS_SUCCESS 0
--#define GL2PS_INFO 1
--#define GL2PS_WARNING 2
--#define GL2PS_ERROR 3
--#define GL2PS_NO_FEEDBACK 4
--#define GL2PS_OVERFLOW 5
--#define GL2PS_UNINITIALIZED 6
--
--/* Options for gl2psBeginPage */
--
--#define GL2PS_NONE 0
--#define GL2PS_DRAW_BACKGROUND (1<<0)
--#define GL2PS_SIMPLE_LINE_OFFSET (1<<1)
--#define GL2PS_SILENT (1<<2)
--#define GL2PS_BEST_ROOT (1<<3)
--#define GL2PS_OCCLUSION_CULL (1<<4)
--#define GL2PS_NO_TEXT (1<<5)
--#define GL2PS_LANDSCAPE (1<<6)
--#define GL2PS_NO_PS3_SHADING (1<<7)
--#define GL2PS_NO_PIXMAP (1<<8)
--#define GL2PS_USE_CURRENT_VIEWPORT (1<<9)
--#define GL2PS_COMPRESS (1<<10)
--#define GL2PS_NO_BLENDING (1<<11)
--#define GL2PS_TIGHT_BOUNDING_BOX (1<<12)
--
--/* Arguments for gl2psEnable/gl2psDisable */
--
--#define GL2PS_POLYGON_OFFSET_FILL 1
--#define GL2PS_POLYGON_BOUNDARY 2
--#define GL2PS_LINE_STIPPLE 3
--#define GL2PS_BLEND 4
--
--/* Text alignment (o=raster position; default mode is BL):
-- +---+ +---+ +---+ +---+ +---+ +---+ +-o-+ o---+ +---o
-- | o | o | | o | | | | | | | | | | | |
-- +---+ +---+ +---+ +-o-+ o---+ +---o +---+ +---+ +---+
-- C CL CR B BL BR T TL TR */
--
--#define GL2PS_TEXT_C 1
--#define GL2PS_TEXT_CL 2
--#define GL2PS_TEXT_CR 3
--#define GL2PS_TEXT_B 4
--#define GL2PS_TEXT_BL 5
--#define GL2PS_TEXT_BR 6
--#define GL2PS_TEXT_T 7
--#define GL2PS_TEXT_TL 8
--#define GL2PS_TEXT_TR 9
--
--typedef GLfloat GL2PSrgba[4];
--
--#if defined(__cplusplus)
--extern "C" {
--#endif
--
--GL2PSDLL_API GLint gl2psBeginPage(const char *title, const char *producer,
-- GLint viewport[4], GLint format, GLint sort,
-- GLint options, GLint colormode,
-- GLint colorsize, GL2PSrgba *colormap,
-- GLint nr, GLint ng, GLint nb, GLint buffersize,
-- FILE *stream, const char *filename);
--GL2PSDLL_API GLint gl2psEndPage(void);
--GL2PSDLL_API GLint gl2psSetOptions(GLint options);
--GL2PSDLL_API GLint gl2psGetOptions(GLint *options);
--GL2PSDLL_API GLint gl2psBeginViewport(GLint viewport[4]);
--GL2PSDLL_API GLint gl2psEndViewport(void);
--GL2PSDLL_API GLint gl2psText(const char *str, const char *fontname,
-- GLshort fontsize);
--GL2PSDLL_API GLint gl2psTextOpt(const char *str, const char *fontname,
-- GLshort fontsize, GLint align, GLfloat angle);
--GL2PSDLL_API GLint gl2psSpecial(GLint format, const char *str);
--GL2PSDLL_API GLint gl2psDrawPixels(GLsizei width, GLsizei height,
-- GLint xorig, GLint yorig,
-- GLenum format, GLenum type, const void *pixels);
--GL2PSDLL_API GLint gl2psEnable(GLint mode);
--GL2PSDLL_API GLint gl2psDisable(GLint mode);
--GL2PSDLL_API GLint gl2psPointSize(GLfloat value);
--GL2PSDLL_API GLint gl2psLineWidth(GLfloat value);
--GL2PSDLL_API GLint gl2psBlendFunc(GLenum sfactor, GLenum dfactor);
--
--/* undocumented */
--GL2PSDLL_API GLint gl2psDrawImageMap(GLsizei width, GLsizei height,
-- const GLfloat position[3],
-- const unsigned char *imagemap);
--GL2PSDLL_API const char *gl2psGetFileExtension(GLint format);
--GL2PSDLL_API const char *gl2psGetFormatDescription(GLint format);
--
--#if defined(__cplusplus)
--}
--#endif
--
--#endif /* __GL2PS_H__ */
--- a/Graphics/CMakeLists.txt
+++ b/Graphics/CMakeLists.txt
@@ -15,7 +15,6 @@
--
Gmsh packaging. Gmsh is an automatic 3D finite element mesh generator.
More information about the debian-science-commits
mailing list