/*
 *
 * Miscellaneous functions
 *
 */


GLUAPI void GLAPIENTRY gluLookAt( GLdouble eyex, GLdouble eyey, GLdouble eyez,
                                GLdouble centerx, GLdouble centery,
                                GLdouble centerz,
                                GLdouble upx, GLdouble upy, GLdouble upz );


GLUAPI void GLAPIENTRY gluOrtho2D( GLdouble left, GLdouble right,
                                 GLdouble bottom, GLdouble top );


GLUAPI void GLAPIENTRY gluPerspective( GLdouble fovy, GLdouble aspect,
                                     GLdouble zNear, GLdouble zFar );


GLUAPI void GLAPIENTRY gluPickMatrix( GLdouble x, GLdouble y,
                                    GLdouble width, GLdouble height,
                                    const GLint viewport[4] );

GLUAPI GLint GLAPIENTRY gluProject( GLdouble objx, GLdouble objy, GLdouble objz,
                                  const GLdouble modelMatrix[16],
                                  const GLdouble projMatrix[16],
                                  const GLint viewport[4],
                                  GLdouble *winx, GLdouble *winy,
                                  GLdouble *winz );

GLUAPI GLint GLAPIENTRY gluUnProject( GLdouble winx, GLdouble winy,
                                    GLdouble winz,
                                    const GLdouble modelMatrix[16],
                                    const GLdouble projMatrix[16],
                                    const GLint viewport[4],
                                    GLdouble *objx, GLdouble *objy,
                                    GLdouble *objz );

GLUAPI const GLubyte* GLAPIENTRY gluErrorString( GLenum errorCode );



/*
 *
 *Mipmapping and image scaling
 *
 */

GLUAPI GLint GLAPIENTRY gluScaleImage( GLenum format,
                                     GLsizei widthin, GLsizei heightin,
                                     GLenum typein, const void *datain,
                                     GLsizei widthout, GLsizei heightout,
                                     GLenum typeout, void *dataout );

GLUAPI GLint GLAPIENTRY gluBuild1DMipmaps( GLenum target, GLint components,
                                         GLsizei width, GLenum format,
                                         GLenum type, const void *data );

GLUAPI GLint GLAPIENTRY gluBuild2DMipmaps( GLenum target, GLint components,
                                         GLsizei width, GLsizei height,
                                         GLenum format,
                                         GLenum type, const void *data );



/*
 *
 *Quadrics
 *
 */

GLUAPI GLUquadricObj* GLAPIENTRY gluNewQuadric( void );

GLUAPI void GLAPIENTRY gluDeleteQuadric( GLUquadricObj *state );

GLUAPI void GLAPIENTRY gluQuadricDrawStyle( GLUquadricObj *quadObject,
                                          GLenum drawStyle );

GLUAPI void GLAPIENTRY gluQuadricOrientation( GLUquadricObj *quadObject,
                                            GLenum orientation );

GLUAPI void GLAPIENTRY gluQuadricNormals( GLUquadricObj *quadObject,
                                        GLenum normals );

GLUAPI void GLAPIENTRY gluQuadricTexture( GLUquadricObj *quadObject,
                                        GLboolean textureCoords );

GLUAPI void GLAPIENTRY gluQuadricCallback( GLUquadricObj *qobj,
                                         GLenum which, void (GLCALLBACK *fn)() );

GLUAPI void GLAPIENTRY gluCylinder( GLUquadricObj *qobj,
                                  GLdouble baseRadius,
                                  GLdouble topRadius,
                                  GLdouble height,
                                  GLint slices, GLint stacks );

GLUAPI void GLAPIENTRY gluSphere( GLUquadricObj *qobj,
                                GLdouble radius, GLint slices, GLint stacks );

GLUAPI void GLAPIENTRY gluDisk( GLUquadricObj *qobj,
                              GLdouble innerRadius, GLdouble outerRadius,
                              GLint slices, GLint loops );

GLUAPI void GLAPIENTRY gluPartialDisk( GLUquadricObj *qobj, GLdouble innerRadius,
                                     GLdouble outerRadius, GLint slices,
                                     GLint loops, GLdouble startAngle,
                                     GLdouble sweepAngle );



/*
 *
 *Nurbs
 *
 */

GLUAPI GLUnurbsObj* GLAPIENTRY gluNewNurbsRenderer( void );

GLUAPI void GLAPIENTRY gluDeleteNurbsRenderer( GLUnurbsObj *nobj );

GLUAPI void GLAPIENTRY gluLoadSamplingMatrices( GLUnurbsObj *nobj,
                                              const GLfloat modelMatrix[16],
                                              const GLfloat projMatrix[16],
                                              const GLint viewport[4] );

GLUAPI void GLAPIENTRY gluNurbsProperty( GLUnurbsObj *nobj, GLenum property,
                                       GLfloat value );

GLUAPI void GLAPIENTRY gluGetNurbsProperty( GLUnurbsObj *nobj, GLenum property,
                                          GLfloat *value );

GLUAPI void GLAPIENTRY gluBeginCurve( GLUnurbsObj *nobj );

GLUAPI void GLAPIENTRY gluEndCurve( GLUnurbsObj *nobj );

GLUAPI void GLAPIENTRY gluNurbsCurve( GLUnurbsObj *nobj, GLint nknots,
                                    GLfloat *knot, GLint stride,
                                    GLfloat *ctlarray, GLint order,
                                    GLenum type );

GLUAPI void GLAPIENTRY gluBeginSurface( GLUnurbsObj *nobj );

GLUAPI void GLAPIENTRY gluEndSurface( GLUnurbsObj *nobj );

GLUAPI void GLAPIENTRY gluNurbsSurface( GLUnurbsObj *nobj,
                                      GLint sknot_count, GLfloat *sknot,
                                      GLint tknot_count, GLfloat *tknot,
                                      GLint s_stride, GLint t_stride,
                                      GLfloat *ctlarray,
                                      GLint sorder, GLint torder,
                                      GLenum type );

GLUAPI void GLAPIENTRY gluBeginTrim( GLUnurbsObj *nobj );

GLUAPI void GLAPIENTRY gluEndTrim( GLUnurbsObj *nobj );

GLUAPI void GLAPIENTRY gluPwlCurve( GLUnurbsObj *nobj, GLint count,
                                  GLfloat *array, GLint stride, GLenum type );

GLUAPI void GLAPIENTRY gluNurbsCallback( GLUnurbsObj *nobj, GLenum which,
                                       void (GLCALLBACK *fn)() );



/*
 *
 *Polygon tessellation
 *
 */

GLUAPI GLUtesselator* GLAPIENTRY gluNewTess( void );

GLUAPI void GLAPIENTRY gluDeleteTess( GLUtesselator *tobj );

GLUAPI void GLAPIENTRY gluTessBeginPolygon( GLUtesselator *tobj,
					    void *polygon_data );

GLUAPI void GLAPIENTRY gluTessBeginContour( GLUtesselator *tobj );

GLUAPI void GLAPIENTRY gluTessVertex( GLUtesselator *tobj, GLdouble coords[3],
				      void *vertex_data );

GLUAPI void GLAPIENTRY gluTessEndContour( GLUtesselator *tobj );

GLUAPI void GLAPIENTRY gluTessEndPolygon( GLUtesselator *tobj );

GLUAPI void GLAPIENTRY gluTessProperty( GLUtesselator *tobj, GLenum which,
					GLdouble value );

GLUAPI void GLAPIENTRY gluTessNormal( GLUtesselator *tobj, GLdouble x,
				      GLdouble y, GLdouble z );

GLUAPI void GLAPIENTRY gluTessCallback( GLUtesselator *tobj, GLenum which,
					void (GLCALLBACK *fn)() );

GLUAPI void GLAPIENTRY gluGetTessProperty( GLUtesselator *tobj, GLenum which,
					   GLdouble *value );

/*
 *
 *Obsolete 1.0 tessellation functions
 *
 */

GLUAPI void GLAPIENTRY gluBeginPolygon( GLUtesselator *tobj );

GLUAPI void GLAPIENTRY gluNextContour( GLUtesselator *tobj, GLenum type );

GLUAPI void GLAPIENTRY gluEndPolygon( GLUtesselator *tobj );



/*
 *
 *New functions in GLU 1.1
 *
 */

GLUAPI const GLubyte* GLAPIENTRY gluGetString( GLenum name );



/*
 *
 *GLU 1.3 functions
 *
 */

GLUAPI GLboolean GLAPIENTRY
gluCheckExtension( const char *extName, const GLubyte *extString );