text: /*
   * SGI FREE SOFTWARE LICENSE B (Version 2.0, Sept. 18, 2008)
   * Copyright (C) 1991-2000 Silicon Graphics, Inc. All Rights Reserved.
   *
   * Permission is hereby granted, free of charge, to any person obtaining a
   * copy of this software and associated documentation files (the "Software"),
   * to deal in the Software without restriction, including without limitation
   * the rights to use, copy, modify, merge, publish, distribute, sublicense,
   * and/or sell copies of the Software, and to permit persons to whom the
   * Software is furnished to do so, subject to the following conditions:
   *
   * The above copyright notice including the dates of first publication and
   * either this permission notice or a reference to
   * http://oss.sgi.com/projects/FreeB/
   * shall be included in all copies or substantial portions of the Software.
   *
   * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
   * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
   * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
   * SILICON GRAPHICS, INC. BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
   * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF
   * OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
   * SOFTWARE.
   *
   * Except as contained in this notice, the name of Silicon Graphics, Inc.
   * shall not be used in advertising or otherwise to promote the sale, use or
   * other dealings in this Software without prior written authorization from
   * Silicon Graphics, Inc.
   */
  
  #ifndef __glu_h__
  #define __glu_h__
  
  #if defined(USE_MGL_NAMESPACE)
  #include "glu_mangle.h"
  #endif
  
  #include <GL/gl.h>
  
  #ifndef GLAPIENTRY
  #if defined(_MSC_VER) || defined(__MINGW32__)
  #define GLAPIENTRY __stdcall
  #else
  #define GLAPIENTRY
  #endif
  #endif
  
  #ifndef GLAPIENTRYP
  #define GLAPIENTRYP GLAPIENTRY *
  #endif
  
  #if (defined(_MSC_VER) || defined(__MINGW32__)) && defined(BUILD_GLU32)
  # undef GLAPI
  # define GLAPI __declspec(dllexport)
  #elif (defined(_MSC_VER) || defined(__MINGW32__)) && defined(_DLL)
  /* tag specifying we're building for DLL runtime support */
  # undef GLAPI
  # define GLAPI __declspec(dllimport)
  #elif !defined(GLAPI)
  /* for use with static link lib build of Win32 edition only */
  # define GLAPI extern
  #endif /* _STATIC_MESA support */
  
  #ifdef __cplusplus
  extern "C" {
  #endif
  
  /*************************************************************/
  
  /* Extensions */
  #define GLU_EXT_object_space_tess          1
  #define GLU_EXT_nurbs_tessellator          1
  
  /* Boolean */
  #define GLU_FALSE                          0
  #define GLU_TRUE                           1
  
  /* Version */
  #define GLU_VERSION_1_1                    1
  #define GLU_VERSION_1_2                    1
  #define GLU_VERSION_1_3                    1
  
  /* StringName */
  #define GLU_VERSION                        100800
  #define GLU_EXTENSIONS                     100801
  
  /* ErrorCode */
  #define GLU_INVALID_ENUM                   100900
  #define GLU_INVALID_VALUE                  100901
  #define GLU_OUT_OF_MEMORY                  100902
  #define GLU_INCOMPATIBLE_GL_VERSION        100903
  #define GLU_INVALID_OPERATION              100904
  
  /* NurbsDisplay */
  /*      GLU_FILL */
  #define GLU_OUTLINE_POLYGON                100240
  #define GLU_OUTLINE_PATCH                  100241
  
  /* NurbsCallback */
  #define GLU_NURBS_ERROR                    100103
  #define GLU_ERROR                          100103
  #define GLU_NURBS_BEGIN                    100164
  #define GLU_NURBS_BEGIN_EXT                100164
  #define GLU_NURBS_VERTEX                   100165
  #define GLU_NURBS_VERTEX_EXT               100165
  #define GLU_NURBS_NORMAL                   100166
  #define GLU_NURBS_NORMAL_EXT               100166
  #define GLU_NURBS_COLOR                    100167
  #define GLU_NURBS_COLOR_EXT                100167
  #define GLU_NURBS_TEXTURE_COORD            100168
  #define GLU_NURBS_TEX_COORD_EXT            100168
  #define GLU_NURBS_END                      100169
  #define GLU_NURBS_END_EXT                  100169
  #define GLU_NURBS_BEGIN_DATA               100170
  #define GLU_NURBS_BEGIN_DATA_EXT           100170
  #define GLU_NURBS_VERTEX_DATA              100171
  #define GLU_NURBS_VERTEX_DATA_EXT          100171
  #define GLU_NURBS_NORMAL_DATA              100172
  #define GLU_NURBS_NORMAL_DATA_EXT          100172
  #define GLU_NURBS_COLOR_DATA               100173
  #define GLU_NURBS_COLOR_DATA_EXT           100173
  #define GLU_NURBS_TEXTURE_COORD_DATA       100174
  #define GLU_NURBS_TEX_COORD_DATA_EXT       100174
  #define GLU_NURBS_END_DATA                 100175
  #define GLU_NURBS_END_DATA_EXT             100175
  
  /* NurbsError */
  #define GLU_NURBS_ERROR1                   100251
  #define GLU_NURBS_ERROR2                   100252
  #define GLU_NURBS_ERROR3                   100253
  #define GLU_NURBS_ERROR4                   100254
  #define GLU_NURBS_ERROR5                   100255
  #define GLU_NURBS_ERROR6                   100256
  #define GLU_NURBS_ERROR7                   100257
  #define GLU_NURBS_ERROR8                   100258
  #define GLU_NURBS_ERROR9                   100259
  #define GLU_NURBS_ERROR10                  100260
  #define GLU_NURBS_ERROR11                  100261
  #define GLU_NURBS_ERROR12                  100262
  #define GLU_NURBS_ERROR13                  100263
  #define GLU_NURBS_ERROR14                  100264
  #define GLU_NURBS_ERROR15                  100265
  #define GLU_NURBS_ERROR16                  100266
  #define GLU_NURBS_ERROR17                  100267
  #define GLU_NURBS_ERROR18                  100268
  #define GLU_NURBS_ERROR19                  100269
  #define GLU_NURBS_ERROR20                  100270
  #define GLU_NURBS_ERROR21                  100271
  #define GLU_NURBS_ERROR22                  100272
  #define GLU_NURBS_ERROR23                  100273
  #define GLU_NURBS_ERROR24                  100274
  #define GLU_NURBS_ERROR25                  100275
  #define GLU_NURBS_ERROR26                  100276
  #define GLU_NURBS_ERROR27                  100277
  #define GLU_NURBS_ERROR28                  100278
  #define GLU_NURBS_ERROR29                  100279
  #define GLU_NURBS_ERROR30                  100280
  #define GLU_NURBS_ERROR31                  100281
  #define GLU_NURBS_ERROR32                  100282
  #define GLU_NURBS_ERROR33                  100283
  #define GLU_NURBS_ERROR34                  100284
  #define GLU_NURBS_ERROR35                  100285
  #define GLU_NURBS_ERROR36                  100286
  #define GLU_NURBS_ERROR37                  100287
  
  /* NurbsProperty */
  #define GLU_AUTO_LOAD_MATRIX               100200
  #define GLU_CULLING                        100201
  #define GLU_SAMPLING_TOLERANCE             100203
  #define GLU_DISPLAY_MODE                   100204
  #define GLU_PARAMETRIC_TOLERANCE           100202
  #define GLU_SAMPLING_METHOD                100205
  #define GLU_U_STEP                         100206
  #define GLU_V_STEP                         100207
  #define GLU_NURBS_MODE                     100160
  #define GLU_NURBS_MODE_EXT                 100160
  #define GLU_NURBS_TESSELLATOR              100161
  #define GLU_NURBS_TESSELLATOR_EXT          100161
  #define GLU_NURBS_RENDERER                 100162
  #define GLU_NURBS_RENDERER_EXT             100162
  
  /* NurbsSampling */
  #define GLU_OBJECT_PARAMETRIC_ERROR        100208
  #define GLU_OBJECT_PARAMETRIC_ERROR_EXT    100208
  #define GLU_OBJECT_PATH_LENGTH             100209
  #define GLU_OBJECT_PATH_LENGTH_EXT         100209
  #define GLU_PATH_LENGTH                    100215
  #define GLU_PARAMETRIC_ERROR               100216
  #define GLU_DOMAIN_DISTANCE                100217
  
  /* NurbsTrim */
  #define GLU_MAP1_TRIM_2                    100210
  #define GLU_MAP1_TRIM_3                    100211
  
  /* QuadricDrawStyle */
  #define GLU_POINT                          100010
  #define GLU_LINE                           100011
  #define GLU_FILL                           100012
  #define GLU_SILHOUETTE                     100013
  
  /* QuadricCallback */
  /*      GLU_ERROR */
  
  /* QuadricNormal */
  #define GLU_SMOOTH                         100000
  #define GLU_FLAT                           100001
  #define GLU_NONE                           100002
  
  /* QuadricOrientation */
  #define GLU_OUTSIDE                        100020
  #define GLU_INSIDE                         100021
  
  /* TessCallback */
  #define GLU_TESS_BEGIN                     100100
  #define GLU_BEGIN                          100100
  #define GLU_TESS_VERTEX                    100101
  #define GLU_VERTEX                         100101
  #define GLU_TESS_END                       100102
  #define GLU_END                            100102
  #define GLU_TESS_ERROR                     100103
  #define GLU_TESS_EDGE_FLAG                 100104
  #define GLU_EDGE_FLAG                      100104
  #define GLU_TESS_COMBINE                   100105
  #define GLU_TESS_BEGIN_DATA                100106
  #define GLU_TESS_VERTEX_DATA               100107
  #define GLU_TESS_END_DATA                  100108
  #define GLU_TESS_ERROR_DATA                100109
  #define GLU_TESS_EDGE_FLAG_DATA            100110
  #define GLU_TESS_COMBINE_DATA              100111
  
  /* TessContour */
  #define GLU_CW                             100120
  #define GLU_CCW                            100121
  #define GLU_INTERIOR                       100122
  #define GLU_EXTERIOR                       100123
  #define GLU_UNKNOWN                        100124
  
  /* TessProperty */
  #define GLU_TESS_WINDING_RULE              100140
  #define GLU_TESS_BOUNDARY_ONLY             100141
  #define GLU_TESS_TOLERANCE                 100142
  
  /* TessError */
  #define GLU_TESS_ERROR1                    100151
  #define GLU_TESS_ERROR2                    100152
  #define GLU_TESS_ERROR3                    100153
  #define GLU_TESS_ERROR4                    100154
  #define GLU_TESS_ERROR5                    100155
  #define GLU_TESS_ERROR6                    100156
  #define GLU_TESS_ERROR7                    100157
  #define GLU_TESS_ERROR8                    100158
  #define GLU_TESS_MISSING_BEGIN_POLYGON     100151
  #define GLU_TESS_MISSING_BEGIN_CONTOUR     100152
  #define GLU_TESS_MISSING_END_POLYGON       100153
  #define GLU_TESS_MISSING_END_CONTOUR       100154
  #define GLU_TESS_COORD_TOO_LARGE           100155
  #define GLU_TESS_NEED_COMBINE_CALLBACK     100156
  
  /* TessWinding */
  #define GLU_TESS_WINDING_ODD               100130
  #define GLU_TESS_WINDING_NONZERO           100131
  #define GLU_TESS_WINDING_POSITIVE          100132
  #define GLU_TESS_WINDING_NEGATIVE          100133
  #define GLU_TESS_WINDING_ABS_GEQ_TWO       100134
  
  /*************************************************************/
  
  
  #ifdef __cplusplus
  class GLUnurbs;
  class GLUquadric;
  class GLUtesselator;
  #else
  typedef struct GLUnurbs GLUnurbs;
  typedef struct GLUquadric GLUquadric;
  typedef struct GLUtesselator GLUtesselator;
  #endif
  
  typedef GLUnurbs GLUnurbsObj;
  typedef GLUquadric GLUquadricObj;
  typedef GLUtesselator GLUtesselatorObj;
  typedef GLUtesselator GLUtriangulatorObj;
  
  #define GLU_TESS_MAX_COORD 1.0e150
  
  /* Internal convenience typedefs */
  typedef void (GLAPIENTRYP _GLUfuncptr)();
  
  GLAPI void GLAPIENTRY gluBeginCurve (GLUnurbs* nurb);
  GLAPI void GLAPIENTRY gluBeginPolygon (GLUtesselator* tess);
  GLAPI void GLAPIENTRY gluBeginSurface (GLUnurbs* nurb);
  GLAPI void GLAPIENTRY gluBeginTrim (GLUnurbs* nurb);
  GLAPI GLint GLAPIENTRY gluBuild1DMipmapLevels (GLenum target, GLint internalFormat, GLsizei width, GLenum format, GLenum type, GLint level, GLint base, GLint max, const void *data);
  GLAPI GLint GLAPIENTRY gluBuild1DMipmaps (GLenum target, GLint internalFormat, GLsizei width, GLenum format, GLenum type, const void *data);
  GLAPI GLint GLAPIENTRY gluBuild2DMipmapLevels (GLenum target, GLint internalFormat, GLsizei width, GLsizei height, GLenum format, GLenum type, GLint level, GLint base, GLint max, const void *data);
  GLAPI GLint GLAPIENTRY gluBuild2DMipmaps (GLenum target, GLint internalFormat, GLsizei width, GLsizei height, GLenum format, GLenum type, const void *data);
  GLAPI GLint GLAPIENTRY gluBuild3DMipmapLevels (GLenum target, GLint internalFormat, GLsizei width, GLsizei height, GLsizei depth, GLenum format, GLenum type, GLint level, GLint base, GLint max, const void *data);
  GLAPI GLint GLAPIENTRY gluBuild3DMipmaps (GLenum target, GLint internalFormat, GLsizei width, GLsizei height, GLsizei depth, GLenum format, GLenum type, const void *data);
  GLAPI GLboolean GLAPIENTRY gluCheckExtension (const GLubyte *extName, const GLubyte *extString);
  GLAPI void GLAPIENTRY gluCylinder (GLUquadric* quad, GLdouble base, GLdouble top, GLdouble height, GLint slices, GLint stacks);
  GLAPI void GLAPIENTRY gluDeleteNurbsRenderer (GLUnurbs* nurb);
  GLAPI void GLAPIENTRY gluDeleteQuadric (GLUquadric* quad);
  GLAPI void GLAPIENTRY gluDeleteTess (GLUtesselator* tess);
  GLAPI void GLAPIENTRY gluDisk (GLUquadric* quad, GLdouble inner, GLdouble outer, GLint slices, GLint loops);
  GLAPI void GLAPIENTRY gluEndCurve (GLUnurbs* nurb);
  GLAPI void GLAPIENTRY gluEndPolygon (GLUtesselator* tess);
  GLAPI void GLAPIENTRY gluEndSurface (GLUnurbs* nurb);
  GLAPI void GLAPIENTRY gluEndTrim (GLUnurbs* nurb);
  GLAPI const GLubyte * GLAPIENTRY gluErrorString (GLenum error);
  GLAPI void GLAPIENTRY gluGetNurbsProperty (GLUnurbs* nurb, GLenum property, GLfloat* data);
  GLAPI const GLubyte * GLAPIENTRY gluGetString (GLenum name);
  GLAPI void GLAPIENTRY gluGetTessProperty (GLUtesselator* tess, GLenum which, GLdouble* data);
  GLAPI void GLAPIENTRY gluLoadSamplingMatrices (GLUnurbs* nurb, const GLfloat *model, const GLfloat *perspective, const GLint *view);
  GLAPI void GLAPIENTRY gluLookAt (GLdouble eyeX, GLdouble eyeY, GLdouble eyeZ, GLdouble centerX, GLdouble centerY, GLdouble centerZ, GLdouble upX, GLdouble upY, GLdouble upZ);
  GLAPI GLUnurbs* GLAPIENTRY gluNewNurbsRenderer (void);
  GLAPI GLUquadric* GLAPIENTRY gluNewQuadric (void);
  GLAPI GLUtesselator* GLAPIENTRY gluNewTess (void);
  GLAPI void GLAPIENTRY gluNextContour (GLUtesselator* tess, GLenum type);
  GLAPI void GLAPIENTRY gluNurbsCallback (GLUnurbs* nurb, GLenum which, _GLUfuncptr CallBackFunc);
  GLAPI void GLAPIENTRY gluNurbsCallbackData (GLUnurbs* nurb, GLvoid* userData);
  GLAPI void GLAPIENTRY gluNurbsCallbackDataEXT (GLUnurbs* nurb, GLvoid* userData);
  GLAPI void GLAPIENTRY gluNurbsCurve (GLUnurbs* nurb, GLint knotCount, GLfloat *knots, GLint stride, GLfloat *control, GLint order, GLenum type);
  GLAPI void GLAPIENTRY gluNurbsProperty (GLUnurbs* nurb, GLenum property, GLfloat value);
  GLAPI void GLAPIENTRY gluNurbsSurface (GLUnurbs* nurb, GLint sKnotCount, GLfloat* sKnots, GLint tKnotCount, GLfloat* tKnots, GLint sStride, GLint tStride, GLfloat* control, GLint sOrder, GLint tOrder, GLenum type);
  GLAPI void GLAPIENTRY gluOrtho2D (GLdouble left, GLdouble right, GLdouble bottom, GLdouble top);
  GLAPI void GLAPIENTRY gluPartialDisk (GLUquadric* quad, GLdouble inner, GLdouble outer, GLint slices, GLint loops, GLdouble start, GLdouble sweep);
  GLAPI void GLAPIENTRY gluPerspective (GLdouble fovy, GLdouble aspect, GLdouble zNear, GLdouble zFar);
  GLAPI void GLAPIENTRY gluPickMatrix (GLdouble x, GLdouble y, GLdouble delX, GLdouble delY, GLint *viewport);
  GLAPI GLint GLAPIENTRY gluProject (GLdouble objX, GLdouble objY, GLdouble objZ, const GLdouble *model, const GLdouble *proj, const GLint *view, GLdouble* winX, GLdouble* winY, GLdouble* winZ);
  GLAPI void GLAPIENTRY gluPwlCurve (GLUnurbs* nurb, GLint count, GLfloat* data, GLint stride, GLenum type);
  GLAPI void GLAPIENTRY gluQuadricCallback (GLUquadric* quad, GLenum which, _GLUfuncptr CallBackFunc);
  GLAPI void GLAPIENTRY gluQuadricDrawStyle (GLUquadric* quad, GLenum draw);
  GLAPI void GLAPIENTRY gluQuadricNormals (GLUquadric* quad, GLenum normal);
  GLAPI void GLAPIENTRY gluQuadricOrientation (GLUquadric* quad, GLenum orientation);
  GLAPI void GLAPIENTRY gluQuadricTexture (GLUquadric* quad, GLboolean texture);
  GLAPI GLint GLAPIENTRY gluScaleImage (GLenum format, GLsizei wIn, GLsizei hIn, GLenum typeIn, const void *dataIn, GLsizei wOut, GLsizei hOut, GLenum typeOut, GLvoid* dataOut);
  GLAPI void GLAPIENTRY gluSphere (GLUquadric* quad, GLdouble radius, GLint slices, GLint stacks);
  GLAPI void GLAPIENTRY gluTessBeginContour (GLUtesselator* tess);
  GLAPI void GLAPIENTRY gluTessBeginPolygon (GLUtesselator* tess, GLvoid* data);
  GLAPI void GLAPIENTRY gluTessCallback (GLUtesselator* tess, GLenum which, _GLUfuncptr CallBackFunc);
  GLAPI void GLAPIENTRY gluTessEndContour (GLUtesselator* tess);
  GLAPI void GLAPIENTRY gluTessEndPolygon (GLUtesselator* tess);
  GLAPI void GLAPIENTRY gluTessNormal (GLUtesselator* tess, GLdouble valueX, GLdouble valueY, GLdouble valueZ);
  GLAPI void GLAPIENTRY gluTessProperty (GLUtesselator* tess, GLenum which, GLdouble data);
  GLAPI void GLAPIENTRY gluTessVertex (GLUtesselator* tess, GLdouble *location, GLvoid* data);
  GLAPI GLint GLAPIENTRY gluUnProject (GLdouble winX, GLdouble winY, GLdouble winZ, const GLdouble *model, const GLdouble *proj, const GLint *view, GLdouble* objX, GLdouble* objY, GLdouble* objZ);
  GLAPI GLint GLAPIENTRY gluUnProject4 (GLdouble winX, GLdouble winY, GLdouble winZ, GLdouble clipW, const GLdouble *model, const GLdouble *proj, const GLint *view, GLdouble nearVal, GLdouble farVal, GLdouble* objX, GLdouble* objY, GLdouble* objZ, GLdouble* objW);
  
  #ifdef __cplusplus
  }
  #endif
  
  #endif /* __glu_h__ */
  