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:
10 ** http://oss.sgi.com/projects/FreeB
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.
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.
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.
40 #ifndef __gluglrenderer_h_
41 #define __gluglrenderer_h_
45 #include "nurbstess.h"
46 #include "glsurfeval.h"
47 #include "glcurveval.h"
50 typedef void (APIENTRY
*errorCallbackType
)( GLenum
);
53 class GLUnurbs
: public NurbsTessellator
{
57 void loadGLMatrices( void );
58 void useGLMatrices( const GLfloat modelMatrix
[16],
59 const GLfloat projMatrix
[16],
60 const GLint viewport
[4] );
61 void setSamplingMatrixIdentity( void );
63 void errorHandler( int );
64 void bgnrender( void );
65 void endrender( void );
66 void setautoloadmode( INREAL value
)
69 if (value
) autoloadmode
= GL_TRUE
;
70 else autoloadmode
= GL_FALSE
;
73 GLboolean
getautoloadmode( void ) { return autoloadmode
; }
75 errorCallbackType errorCallback
;
76 void postError( int which
)
77 { if (errorCallback
) (errorCallback
)( (GLenum
)which
); }
79 void putSurfCallBack(GLenum which
, void (GLAPIENTRY
*fn
)() )
81 void putSurfCallBack(GLenum which
, _GLUfuncptr fn
)
84 curveEvaluator
.putCallBack(which
, fn
);
85 surfaceEvaluator
.putCallBack(which
, fn
);
88 int get_vertices_call_back()
90 return surfaceEvaluator
.get_vertices_call_back();
93 void put_vertices_call_back(int flag
)
95 surfaceEvaluator
.put_vertices_call_back(flag
);
98 int get_callback_auto_normal()
100 return surfaceEvaluator
.get_callback_auto_normal();
103 void put_callback_auto_normal(int flag
)
105 surfaceEvaluator
.put_callback_auto_normal(flag
);
108 void setNurbsCallbackData(void* userData
)
110 curveEvaluator
.set_callback_userData(userData
);
111 surfaceEvaluator
.set_callback_userData(userData
);
116 void LOD_eval_list(int level
)
118 surfaceEvaluator
.LOD_eval_list(level
);
126 void put_callbackFlag(int flag
)
129 surfaceEvaluator
.put_vertices_call_back(flag
);
130 curveEvaluator
.put_vertices_call_back(flag
);
134 GLboolean autoloadmode
;
135 OpenGLSurfaceEvaluator surfaceEvaluator
;
136 OpenGLCurveEvaluator curveEvaluator
;
138 void loadSamplingMatrix( const GLfloat vmat
[4][4],
139 const GLint viewport
[4] );
140 void loadCullingMatrix( GLfloat vmat
[4][4] );
141 static void grabGLMatrix( GLfloat vmat
[4][4] );
142 static void transform4d( GLfloat A
[4], GLfloat B
[4],
144 static void multmatrix4d( GLfloat n
[4][4], const GLfloat left
[4][4],
145 const GLfloat right
[4][4] );
150 #endif /* __gluglrenderer_h_ */