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315 lines
8.2 KiB
315 lines
8.2 KiB
/* $Id: gl2ps.h,v 1.4 2004/04/30 17:18:30 king Exp $ */
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/*
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* GL2PS, an OpenGL to PostScript Printing Library
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* Copyright (C) 1999-2003 Christophe Geuzaine <geuz@geuz.org>
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of either:
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*
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* a) the GNU Library General Public License as published by the Free
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* Software Foundation, either version 2 of the License, or (at your
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* option) any later version; or
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*
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* b) the GL2PS License as published by Christophe Geuzaine, either
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* version 2 of the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful, but
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* WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See either
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* the GNU Library General Public License or the GL2PS License for
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* more details.
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*
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* You should have received a copy of the GNU Library General Public
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* License along with this library in the file named "COPYING.LGPL";
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* if not, write to the Free Software Foundation, Inc., 675 Mass Ave,
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* Cambridge, MA 02139, USA.
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*
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* You should have received a copy of the GL2PS License with this
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* library in the file named "COPYING.GL2PS"; if not, I will be glad
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* to provide one.
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*
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* For the latest info about gl2ps, see http://www.geuz.org/gl2ps/.
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* Please report all bugs and problems to <gl2ps@geuz.org>.
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*/
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#ifndef __GL2PS_H__
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#define __GL2PS_H__
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#include <stdio.h>
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#include <stdlib.h>
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#include <math.h>
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/* To generate a Windows dll, define GL2PSDLL at compile time */
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#ifdef WIN32
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# if defined(_MSC_VER)
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/* shut up warning due to bad windows header file */
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# pragma warning ( disable : 4115 )
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# endif
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# include <windows.h>
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# ifdef GL2PSDLL
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# ifdef GL2PSDLL_EXPORTS
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# define GL2PSDLL_API __declspec(dllexport)
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# else
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# define GL2PSDLL_API __declspec(dllimport)
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# endif
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# else
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# define GL2PSDLL_API
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# endif
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#else
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# define GL2PSDLL_API
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#endif
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#ifdef __APPLE__
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# include <OpenGL/gl.h>
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#else
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# include <GL/gl.h>
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#endif
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/* Support for compressed PDF */
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#if defined(HAVE_ZLIB) || defined(HAVE_LIBZ) || defined(GL2PS_HAVE_ZLIB)
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# include "vtk_zlib.h"
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# ifndef GL2PS_HAVE_ZLIB
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# define GL2PS_HAVE_ZLIB
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# endif
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#endif
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/* Version number */
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#define GL2PS_MAJOR_VERSION 1
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#define GL2PS_MINOR_VERSION 1
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#define GL2PS_PATCH_VERSION 2
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#define GL2PS_VERSION (GL2PS_MAJOR_VERSION + \
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0.01 * GL2PS_MINOR_VERSION + \
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0.0001 * GL2PS_PATCH_VERSION)
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/* Output file format */
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#define GL2PS_PS 1
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#define GL2PS_EPS 2
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#define GL2PS_TEX 3
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#define GL2PS_PDF 4
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/* Sorting algorithms */
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#define GL2PS_NO_SORT 1
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#define GL2PS_SIMPLE_SORT 2
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#define GL2PS_BSP_SORT 3
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/* Options for gl2psBeginPage */
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#define GL2PS_NONE 0
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#define GL2PS_DRAW_BACKGROUND (1<<0)
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#define GL2PS_SIMPLE_LINE_OFFSET (1<<1)
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#define GL2PS_SILENT (1<<2)
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#define GL2PS_BEST_ROOT (1<<3)
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#define GL2PS_OCCLUSION_CULL (1<<4)
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#define GL2PS_NO_TEXT (1<<5)
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#define GL2PS_LANDSCAPE (1<<6)
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#define GL2PS_NO_PS3_SHADING (1<<7)
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#define GL2PS_NO_PIXMAP (1<<8)
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#define GL2PS_USE_CURRENT_VIEWPORT (1<<9)
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#define GL2PS_COMPRESS (1<<10)
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/* Arguments for gl2psEnable/gl2psDisable */
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#define GL2PS_POLYGON_OFFSET_FILL 1
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#define GL2PS_POLYGON_BOUNDARY 2
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#define GL2PS_LINE_STIPPLE 3
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/* Magic numbers */
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#define GL2PS_EPSILON 5.0e-3F
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#define GL2PS_DEPTH_FACT 1000.0F
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#define GL2PS_SIMPLE_OFFSET 0.05F
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#define GL2PS_SIMPLE_OFFSET_LARGE 1.0F
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#define GL2PS_ZERO(arg) (fabs(arg)<1.e-20)
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#define GL2PS_FIXED_XREF_ENTRIES 7
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/* Message levels and error codes */
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#define GL2PS_SUCCESS 0
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#define GL2PS_INFO 1
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#define GL2PS_WARNING 2
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#define GL2PS_ERROR 3
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#define GL2PS_NO_FEEDBACK 4
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#define GL2PS_OVERFLOW 5
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#define GL2PS_UNINITIALIZED 6
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/* Primitive types */
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#define GL2PS_NOTYPE -1
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#define GL2PS_TEXT 1
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#define GL2PS_POINT 2
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#define GL2PS_LINE 3
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#define GL2PS_QUADRANGLE 4
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#define GL2PS_TRIANGLE 5
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#define GL2PS_PIXMAP 6
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/* Text alignment */
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#define GL2PS_TEXT_C 1
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#define GL2PS_TEXT_CL 2
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#define GL2PS_TEXT_CR 3
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#define GL2PS_TEXT_B 4
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#define GL2PS_TEXT_BL 5
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#define GL2PS_TEXT_BR 6
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#define GL2PS_TEXT_T 7
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#define GL2PS_TEXT_TL 8
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#define GL2PS_TEXT_TR 9
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/* BSP tree primitive comparison */
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#define GL2PS_COINCIDENT 1
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#define GL2PS_IN_FRONT_OF 2
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#define GL2PS_IN_BACK_OF 3
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#define GL2PS_SPANNING 4
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/* 2D BSP tree primitive comparison */
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#define GL2PS_POINT_COINCIDENT 0
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#define GL2PS_POINT_INFRONT 1
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#define GL2PS_POINT_BACK 2
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/* Pass through options */
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#define GL2PS_BEGIN_POLYGON_OFFSET_FILL 1
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#define GL2PS_END_POLYGON_OFFSET_FILL 2
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#define GL2PS_BEGIN_POLYGON_BOUNDARY 3
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#define GL2PS_END_POLYGON_BOUNDARY 4
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#define GL2PS_BEGIN_LINE_STIPPLE 5
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#define GL2PS_END_LINE_STIPPLE 6
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#define GL2PS_SET_POINT_SIZE 7
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#define GL2PS_SET_LINE_WIDTH 8
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typedef GLfloat GL2PSrgba[4];
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typedef GLfloat GL2PSxyz[3];
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typedef GLfloat GL2PSplane[4];
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typedef struct _GL2PSbsptree2d GL2PSbsptree2d;
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struct _GL2PSbsptree2d {
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GL2PSplane plane;
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GL2PSbsptree2d *front, *back;
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};
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typedef struct {
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GLint nmax, size, incr, n;
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char *array;
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} GL2PSlist;
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typedef struct _GL2PSbsptree GL2PSbsptree;
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struct _GL2PSbsptree {
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GL2PSplane plane;
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GL2PSlist *primitives;
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GL2PSbsptree *front, *back;
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};
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typedef struct {
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GL2PSxyz xyz;
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GL2PSrgba rgba;
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} GL2PSvertex;
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typedef GL2PSvertex GL2PStriangle[3];
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typedef struct {
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GLshort fontsize;
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char *str, *fontname;
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GLint alignment;
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} GL2PSstring;
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typedef struct {
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GLsizei width, height;
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GLenum format, type;
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GLfloat *pixels;
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} GL2PSimage;
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typedef struct {
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GLshort type, numverts;
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char boundary, dash, culled;
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GLfloat width, depth;
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GL2PSvertex *verts;
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union {
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GL2PSstring *text;
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GL2PSimage *image;
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} data;
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} GL2PSprimitive;
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typedef struct {
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#ifdef GL2PS_HAVE_ZLIB
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Bytef *dest, *src, *start;
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uLongf destLen, srcLen;
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#else
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int dummy;
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#endif
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} GL2PScompress;
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typedef struct {
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/* general */
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GLint format, sort, options, colorsize, colormode, buffersize;
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const char *title, *producer, *filename;
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GLboolean boundary;
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GLfloat *feedback, offset[2], lastlinewidth;
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GLint viewport[4];
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GL2PSrgba *colormap, lastrgba, threshold;
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GL2PSlist *primitives;
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FILE *stream;
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GL2PScompress *compress;
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/* BSP-specific */
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GLint maxbestroot;
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/* occlusion culling-specific */
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GLboolean zerosurfacearea;
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GL2PSbsptree2d *imagetree;
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GL2PSprimitive *primitivetoadd;
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/* PDF-specific */
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int cref[GL2PS_FIXED_XREF_ENTRIES];
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int streamlength;
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GL2PSlist *tlist, *tidxlist, *ilist, *slist;
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int lasttype, consec_cnt, consec_inner_cnt;
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int line_width_diff, line_rgb_diff, last_line_finished, last_triangle_finished;
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} GL2PScontext;
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/* private prototypes */
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GLint gl2psPrintPrimitives(void);
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/* public functions */
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#ifdef __cplusplus
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extern "C" {
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#endif
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GL2PSDLL_API GLint gl2psBeginPage(const char *title, const char *producer,
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GLint viewport[4], GLint format, GLint sort,
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GLint options, GLint colormode,
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GLint colorsize, GL2PSrgba *colormap,
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GLint nr, GLint ng, GLint nb, GLint buffersize,
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FILE *stream, const char *filename);
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GL2PSDLL_API GLint gl2psEndPage(void);
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GL2PSDLL_API GLint gl2psBeginViewport(GLint viewport[4]);
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GL2PSDLL_API GLint gl2psEndViewport(void);
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GL2PSDLL_API GLint gl2psText(const char *str, const char *fontname, GLshort fontsize);
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GL2PSDLL_API GLint gl2psDrawPixels(GLsizei width, GLsizei height,
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GLint xorig, GLint yorig,
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GLenum format, GLenum type, const void *pixels);
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GL2PSDLL_API GLint gl2psEnable(GLint mode);
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GL2PSDLL_API GLint gl2psDisable(GLint mode);
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GL2PSDLL_API GLint gl2psPointSize(GLfloat value);
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GL2PSDLL_API GLint gl2psLineWidth(GLfloat value);
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/* Undocumented */
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GL2PSDLL_API GLint gl2psTextOpt(const char *str, const char *fontname, GLshort fontsize,
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GLint align, GL2PSrgba color);
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#ifdef __cplusplus
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};
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#endif
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#endif /* __GL2PS_H__ */
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