/* $Id: gl2ps.h,v 1.8.2.1 2005/09/05 14:27:41 krischnamurti Exp $ */
/*
* GL2PS, an OpenGL to PostScript Printing Library
* Copyright (C) 1999-2003 Christophe Geuzaine <geuz@geuz.org>
*
* 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, see http://www.geuz.org/gl2ps/.
* Please report all bugs and problems to <gl2ps@geuz.org>.
*/
#ifndef __GL2PS_H__
#define __GL2PS_H__
#include <stdio.h>
#include <stdlib.h>
#include <math.h>
/* To generate a Windows dll, define GL2PSDLL at compile time */
#if defined(WIN32) || defined(_WIN32) || defined(__WIN32__) || defined(__NT__)
# include <windows.h>
# ifdef GL2PSDLL
# ifdef GL2PSDLL_EXPORTS
# define GL2PSDLL_API __declspec(dllexport)
# else
# define GL2PSDLL_API __declspec(dllimport)
# endif
# else
# define GL2PSDLL_API
# endif
#else
# define GL2PSDLL_API
#endif
#ifdef __APPLE__
# include <OpenGL/gl.h>
#else
# include <GL/gl.h>
#endif
/* Support for compressed PDF */
#if defined(HAVE_ZLIB) || defined(HAVE_LIBZ) || defined(GL2PS_HAVE_ZLIB)
# include <zlib.h>
# ifndef GL2PS_HAVE_ZLIB
# define GL2PS_HAVE_ZLIB
# endif
#endif
/* Version number */
#define GL2PS_MAJOR_VERSION 1
#define GL2PS_MINOR_VERSION 1
#define GL2PS_PATCH_VERSION 2
#define GL2PS_VERSION (GL2PS_MAJOR_VERSION + \
0.01 * GL2PS_MINOR_VERSION + \
0.0001 * GL2PS_PATCH_VERSION)
/* Output file format */
#define GL2PS_PS 1
#define GL2PS_EPS 2
#define GL2PS_TEX 3
#define GL2PS_PDF 4
/* Sorting algorithms */
#define GL2PS_NO_SORT 1
#define GL2PS_SIMPLE_SORT 2
#define GL2PS_BSP_SORT 3
/* 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)
/* Arguments for gl2psEnable/gl2psDisable */
#define GL2PS_POLYGON_OFFSET_FILL 1
#define GL2PS_POLYGON_BOUNDARY 2
#define GL2PS_LINE_STIPPLE 3
/* Magic numbers */
#define GL2PS_EPSILON 5.0e-3F
#define GL2PS_DEPTH_FACT 1000.0F
#define GL2PS_SIMPLE_OFFSET 0.05F
#define GL2PS_SIMPLE_OFFSET_LARGE 1.0F
#define GL2PS_ZERO(arg) (fabs(arg)<1.e-20)
#define GL2PS_FIXED_XREF_ENTRIES 7
/* 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
/* Primitive types */
#define GL2PS_NOTYPE -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
/* Text alignment */
#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
/* 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
/* Pass through options */
#define GL2PS_BEGIN_POLYGON_OFFSET_FILL 1
#define GL2PS_END_POLYGON_OFFSET_FILL 2
#define GL2PS_BEGIN_POLYGON_BOUNDARY 3
#define GL2PS_END_POLYGON_BOUNDARY 4
#define GL2PS_BEGIN_LINE_STIPPLE 5
#define GL2PS_END_LINE_STIPPLE 6
#define GL2PS_SET_POINT_SIZE 7
#define GL2PS_SET_LINE_WIDTH 8
typedef GLfloat GL2PSrgba[4];
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 GL2PSvertex GL2PStriangle[3];
typedef struct {
GLshort fontsize;
char *str, *fontname;
GLint alignment;
} GL2PSstring;
typedef struct {
GLsizei width, height;
GLenum format, type;
GLfloat *pixels;
} GL2PSimage;
typedef struct {
GLshort type, numverts;
char boundary, dash, culled;
GLfloat width, depth;
GL2PSvertex *verts;
union {
GL2PSstring *text;
GL2PSimage *image;
} data;
} GL2PSprimitive;
typedef struct {
#ifdef GL2PS_HAVE_ZLIB
Bytef *dest, *src, *start;
uLongf destLen, srcLen;
#else
int dummy;
#endif
} GL2PScompress;
typedef struct {
/* general */
GLint format, sort, options, colorsize, colormode, buffersize;
const char *title, *producer, *filename;
GLboolean boundary;
GLfloat *feedback, offset[2], lastlinewidth;
GLint viewport[4];
GL2PSrgba *colormap, lastrgba, threshold;
GL2PSlist *primitives;
FILE *stream;
GL2PScompress *compress;
/* BSP-specific */
GLint maxbestroot;
/* occlusion culling-specific */
GLboolean zerosurfacearea;
GL2PSbsptree2d *imagetree;
GL2PSprimitive *primitivetoadd;
/* PDF-specific */
int cref[GL2PS_FIXED_XREF_ENTRIES];
int streamlength;
GL2PSlist *tlist, *tidxlist, *ilist, *slist;
int lasttype, consec_cnt, consec_inner_cnt;
int line_width_diff, line_rgb_diff, last_line_finished, last_triangle_finished;
} GL2PScontext;
/* private prototypes */
GLint gl2psPrintPrimitives(void);
/* public functions */
#ifdef __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 gl2psBeginViewport(GLint viewport[4]);
GL2PSDLL_API GLint gl2psEndViewport(void);
GL2PSDLL_API GLint gl2psText(const char *str, const char *fontname, GLshort fontsize);
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);
/* Undocumented */
GL2PSDLL_API GLint gl2psTextOpt(const char *str, const char *fontname, GLshort fontsize,
GLint align, GL2PSrgba color);
#ifdef __cplusplus
};
#endif
#endif /* __GL2PS_H__ */
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