src/glu/sgi/libnurbs/interface/glrenderer.h

   1 /*
   2 ** License Applicability. Except to the extent portions of this file are
   3 ** made subject to an alternative license as permitted in the SGI Free
   4 ** Software License B, Version 1.1 (the "License"), the contents of this
   5 ** file are subject only to the provisions of the License. You may not use
   6 ** this file except in compliance with the License. You may obtain a copy
   7 ** of the License at Silicon Graphics, Inc., attn: Legal Services, 1600
   8 ** Amphitheatre Parkway, Mountain View, CA 94043-1351, or at:
   9 **
  10 ** http://oss.sgi.com/projects/FreeB
  11 **
  12 ** Note that, as provided in the License, the Software is distributed on an
  13 ** "AS IS" basis, with ALL EXPRESS AND IMPLIED WARRANTIES AND CONDITIONS
  14 ** DISCLAIMED, INCLUDING, WITHOUT LIMITATION, ANY IMPLIED WARRANTIES AND
  15 ** CONDITIONS OF MERCHANTABILITY, SATISFACTORY QUALITY, FITNESS FOR A
  16 ** PARTICULAR PURPOSE, AND NON-INFRINGEMENT.
  17 **
  18 ** Original Code. The Original Code is: OpenGL Sample Implementation,
  19 ** Version 1.2.1, released January 26, 2000, developed by Silicon Graphics,
  20 ** Inc. The Original Code is Copyright (c) 1991-2000 Silicon Graphics, Inc.
  21 ** Copyright in any portions created by third parties is as indicated
  22 ** elsewhere herein. All Rights Reserved.
  23 **
  24 ** Additional Notice Provisions: The application programming interfaces
  25 ** established by SGI in conjunction with the Original Code are The
  26 ** OpenGL(R) Graphics System: A Specification (Version 1.2.1), released
  27 ** April 1, 1999; The OpenGL(R) Graphics System Utility Library (Version
  28 ** 1.3), released November 4, 1998; and OpenGL(R) Graphics with the X
  29 ** Window System(R) (Version 1.3), released October 19, 1998. This software
  30 ** was created using the OpenGL(R) version 1.2.1 Sample Implementation
  31 ** published by SGI, but has not been independently verified as being
  32 ** compliant with the OpenGL(R) version 1.2.1 Specification.
  33 */
  34
  35 /*
  36  * glrenderer.h
  37  *
  38  * $Date: 2004/02/26 14:58:11 $ $Revision: 1.4 $
  39  * $Header: /home/krh/git/sync/mesa-cvs-repo/Mesa/src/glu/sgi/libnurbs/interface/glrenderer.h,v 1.4 2004/02/26 14:58:11 brianp Exp $
  40  */
  41
  42 #ifndef __gluglrenderer_h_
  43 #define __gluglrenderer_h_
  44
  45 #include <GL/gl.h>
  46 #include <GL/glu.h>
  47 #include "nurbstess.h"
  48 #include "glsurfeval.h"
  49 #include "glcurveval.h"
  50
  51 extern "C" {
  52       typedef void (APIENTRY *errorCallbackType)( GLenum );
  53 }
  54
  55 class GLUnurbs : public NurbsTessellator {
  56
  57 public:
  58                 GLUnurbs( void );
  59     void        loadGLMatrices( void );
  60     void        useGLMatrices( const GLfloat modelMatrix[16],
  61                                const GLfloat projMatrix[16],
  62                                const GLint viewport[4] );
  63     void                setSamplingMatrixIdentity( void );
  64
  65     void        errorHandler( int );
  66     void        bgnrender( void );
  67     void        endrender( void );
  68     void        setautoloadmode( INREAL value )
  69                     {
  70
  71                       if (value) autoloadmode = GL_TRUE;
  72                       else autoloadmode = GL_FALSE;
  73
  74                     }
  75     GLboolean   getautoloadmode( void ) { return autoloadmode; }
  76
  77     errorCallbackType errorCallback;
  78     void        postError( int which )
  79                     { if (errorCallback) (errorCallback)( (GLenum)which ); }
  80 #ifdef _WIN32
  81     void        putSurfCallBack(GLenum which, void (GLAPIENTRY *fn)() )
  82 #else
  83     void        putSurfCallBack(GLenum which, _GLUfuncptr fn )
  84 #endif
  85       {
  86         curveEvaluator.putCallBack(which, fn);
  87         surfaceEvaluator.putCallBack(which, fn);
  88       }
  89
  90     int         get_vertices_call_back()
  91       {
  92         return surfaceEvaluator.get_vertices_call_back();
  93       }
  94
  95     void        put_vertices_call_back(int flag)
  96       {
  97         surfaceEvaluator.put_vertices_call_back(flag);
  98       }
  99
 100     int         get_callback_auto_normal()
 101       {
 102         return surfaceEvaluator.get_callback_auto_normal();
 103       }
 104
 105     void         put_callback_auto_normal(int flag)
 106       {
 107         surfaceEvaluator.put_callback_auto_normal(flag);
 108       }
 109
 110     void       setNurbsCallbackData(void* userData)
 111       {
 112        curveEvaluator.set_callback_userData(userData);
 113        surfaceEvaluator.set_callback_userData(userData);
 114      }
 115
 116
 117     //for LOD
 118     void LOD_eval_list(int level)
 119       {
 120         surfaceEvaluator.LOD_eval_list(level);
 121       }
 122
 123     //NEWCALLBACK
 124     int        is_callback()
 125       {
 126         return callbackFlag;
 127       }
 128     void       put_callbackFlag(int flag)
 129       {
 130         callbackFlag = flag;
 131         surfaceEvaluator.put_vertices_call_back(flag);
 132         curveEvaluator.put_vertices_call_back(flag);
 133       }
 134
 135 private:
 136     GLboolean                   autoloadmode;
 137     OpenGLSurfaceEvaluator      surfaceEvaluator;
 138     OpenGLCurveEvaluator        curveEvaluator;
 139
 140     void                loadSamplingMatrix( const GLfloat vmat[4][4],
 141                                 const GLint viewport[4] );
 142     void                loadCullingMatrix( GLfloat vmat[4][4] );
 143     static void         grabGLMatrix( GLfloat vmat[4][4] );
 144     static void         transform4d( GLfloat A[4], GLfloat B[4],
 145                                 GLfloat mat[4][4] );
 146     static void         multmatrix4d( GLfloat n[4][4], const GLfloat left[4][4],
 147                                 const GLfloat right[4][4] );
 148
 149    int                  callbackFlag;
 150 };
 151
 152 #endif /* __gluglrenderer_h_ */