/*
 * GL2PS, an OpenGL to PostScript Printing Library
 * Copyright (C) 1999-2017 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., 51 Franklin
 * Street, Fifth Floor, Boston, MA 02110-1301, 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@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 : 4127)
#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

#if defined(HAVE_NO_VSNPRINTF)
#define GL2PS_HAVE_NO_VSNPRINTF
#endif

/* Version number */

#define GL2PS_MAJOR_VERSION 1
#define GL2PS_MINOR_VERSION 4
#define GL2PS_PATCH_VERSION 0
#define GL2PS_EXTRA_VERSION ""

#define GL2PS_VERSION                                                          \
  (GL2PS_MAJOR_VERSION + 0.01 * GL2PS_MINOR_VERSION +                          \
   0.0001 * GL2PS_PATCH_VERSION)

#define GL2PS_COPYRIGHT "(C) 1999-2017 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)
#define GL2PS_NO_OPENGL_CONTEXT (1 << 13)

/* Arguments for gl2psEnable/gl2psDisable */

#define GL2PS_POLYGON_OFFSET_FILL 1
#define GL2PS_POLYGON_BOUNDARY 2
#define GL2PS_LINE_STIPPLE 3
#define GL2PS_BLEND 4

/* Arguments for gl2psLineCap/Join */

#define GL2PS_LINE_CAP_BUTT 0
#define GL2PS_LINE_CAP_ROUND 1
#define GL2PS_LINE_CAP_SQUARE 2

#define GL2PS_LINE_JOIN_MITER 0
#define GL2PS_LINE_JOIN_ROUND 1
#define GL2PS_LINE_JOIN_BEVEL 2

/* 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];
typedef GLfloat GL2PSxyz[3];

typedef struct {
  GL2PSxyz xyz;
  GL2PSrgba rgba;
} GL2PSvertex;

/* 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

#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 gl2psTextOptColor(const char *str, const char *fontname,
                                     GLshort fontsize, GLint align,
                                     GLfloat angle, GL2PSrgba color);
GL2PSDLL_API GLint gl2psSpecial(GLint format, const char *str);
GL2PSDLL_API GLint gl2psSpecialColor(GLint format, const char *str,
                                     GL2PSrgba rgba);
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 gl2psLineCap(GLint value);
GL2PSDLL_API GLint gl2psLineJoin(GLint value);
GL2PSDLL_API GLint gl2psLineWidth(GLfloat value);
GL2PSDLL_API GLint gl2psBlendFunc(GLenum sfactor, GLenum dfactor);

/* referenced in the documentation, but not fully documented */
GL2PSDLL_API GLint gl2psForceRasterPos(GL2PSvertex *vert);
GL2PSDLL_API void gl2psAddPolyPrimitive(GLshort type, GLshort numverts,
                                        GL2PSvertex *verts, GLint offset,
                                        GLfloat ofactor, GLfloat ounits,
                                        GLushort pattern, GLint factor,
                                        GLfloat width, GLint linecap,
                                        GLint linejoin, char boundary);

/* 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);
GL2PSDLL_API GLint gl2psGetFileFormat();

#if defined(__cplusplus)
}
#endif

#endif /* __GL2PS_H__ */
