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

   1 /*
   2  * SGI FREE SOFTWARE LICENSE B (Version 2.0, Sept. 18, 2008)
   3  * Copyright (C) 1991-2000 Silicon Graphics, Inc. All Rights Reserved.
   4  *
   5  * Permission is hereby granted, free of charge, to any person obtaining a
   6  * copy of this software and associated documentation files (the "Software"),
   7  * to deal in the Software without restriction, including without limitation
   8  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
   9  * and/or sell copies of the Software, and to permit persons to whom the
  10  * Software is furnished to do so, subject to the following conditions:
  11  *
  12  * The above copyright notice including the dates of first publication and
  13  * either this permission notice or a reference to
  14  * http://oss.sgi.com/projects/FreeB/
  15  * shall be included in all copies or substantial portions of the Software.
  16  *
  17  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
  18  * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  19  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
  20  * SILICON GRAPHICS, INC. BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
  21  * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF
  22  * OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
  23  * SOFTWARE.
  24  *
  25  * Except as contained in this notice, the name of Silicon Graphics, Inc.
  26  * shall not be used in advertising or otherwise to promote the sale, use or
  27  * other dealings in this Software without prior written authorization from
  28  * Silicon Graphics, Inc.
  29  */
  30
  31 /*
  32  * glrenderer.h
  33  *
  34  * $Date: 2004/02/26 14:58:11 $ $Revision: 1.4 $
  35  * $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 $
  36  */
  37
  38 #ifndef __gluglrenderer_h_
  39 #define __gluglrenderer_h_
  40
  41 #include <GL/gl.h>
  42 #include <GL/glu.h>
  43 #include "nurbstess.h"
  44 #include "glsurfeval.h"
  45 #include "glcurveval.h"
  46
  47 extern "C" {
  48       typedef void (APIENTRY *errorCallbackType)( GLenum );
  49 }
  50
  51 class GLUnurbs : public NurbsTessellator {
  52
  53 public:
  54                 GLUnurbs( void );
  55     void        loadGLMatrices( void );
  56     void        useGLMatrices( const GLfloat modelMatrix[16],
  57                                const GLfloat projMatrix[16],
  58                                const GLint viewport[4] );
  59     void                setSamplingMatrixIdentity( void );
  60
  61     void        errorHandler( int );
  62     void        bgnrender( void );
  63     void        endrender( void );
  64     void        setautoloadmode( INREAL value )
  65                     {
  66
  67                       if (value) autoloadmode = GL_TRUE;
  68                       else autoloadmode = GL_FALSE;
  69
  70                     }
  71     GLboolean   getautoloadmode( void ) { return autoloadmode; }
  72
  73     errorCallbackType errorCallback;
  74     void        postError( int which )
  75                     { if (errorCallback) (errorCallback)( (GLenum)which ); }
  76 #ifdef _WIN32
  77     void        putSurfCallBack(GLenum which, void (GLAPIENTRY *fn)() )
  78 #else
  79     void        putSurfCallBack(GLenum which, _GLUfuncptr fn )
  80 #endif
  81       {
  82         curveEvaluator.putCallBack(which, fn);
  83         surfaceEvaluator.putCallBack(which, fn);
  84       }
  85
  86     int         get_vertices_call_back()
  87       {
  88         return surfaceEvaluator.get_vertices_call_back();
  89       }
  90
  91     void        put_vertices_call_back(int flag)
  92       {
  93         surfaceEvaluator.put_vertices_call_back(flag);
  94       }
  95
  96     int         get_callback_auto_normal()
  97       {
  98         return surfaceEvaluator.get_callback_auto_normal();
  99       }
 100
 101     void         put_callback_auto_normal(int flag)
 102       {
 103         surfaceEvaluator.put_callback_auto_normal(flag);
 104       }
 105
 106     void       setNurbsCallbackData(void* userData)
 107       {
 108        curveEvaluator.set_callback_userData(userData);
 109        surfaceEvaluator.set_callback_userData(userData);
 110      }
 111
 112
 113     //for LOD
 114     void LOD_eval_list(int level)
 115       {
 116         surfaceEvaluator.LOD_eval_list(level);
 117       }
 118
 119     //NEWCALLBACK
 120     int        is_callback()
 121       {
 122         return callbackFlag;
 123       }
 124     void       put_callbackFlag(int flag)
 125       {
 126         callbackFlag = flag;
 127         surfaceEvaluator.put_vertices_call_back(flag);
 128         curveEvaluator.put_vertices_call_back(flag);
 129       }
 130
 131 private:
 132     GLboolean                   autoloadmode;
 133     OpenGLSurfaceEvaluator      surfaceEvaluator;
 134     OpenGLCurveEvaluator        curveEvaluator;
 135
 136     void                loadSamplingMatrix( const GLfloat vmat[4][4],
 137                                 const GLint viewport[4] );
 138     void                loadCullingMatrix( GLfloat vmat[4][4] );
 139     static void         grabGLMatrix( GLfloat vmat[4][4] );
 140     static void         transform4d( GLfloat A[4], GLfloat B[4],
 141                                 GLfloat mat[4][4] );
 142     static void         multmatrix4d( GLfloat n[4][4], const GLfloat left[4][4],
 143                                 const GLfloat right[4][4] );
 144
 145    int                  callbackFlag;
 146 };
 147
 148 #endif /* __gluglrenderer_h_ */