SGI SI GLU library
[mesa.git] / 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: 2001/03/17 00:25:40 $ $Revision: 1.1 $
39 * $Header: /home/krh/git/sync/mesa-cvs-repo/Mesa/src/glu/sgi/libnurbs/interface/glrenderer.h,v 1.1 2001/03/17 00:25:40 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 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 void (GLAPIENTRY *errorCallback)( GLenum );
74 void postError( int which )
75 { if (errorCallback) (*errorCallback)( (GLenum)which ); }
76
77 void putSurfCallBack(GLenum which, GLvoid (GLAPIENTRY *fn)(...))
78 {
79 curveEvaluator.putCallBack(which, fn);
80 surfaceEvaluator.putCallBack(which, fn);
81 }
82
83 int get_vertices_call_back()
84 {
85 return surfaceEvaluator.get_vertices_call_back();
86 }
87
88 void put_vertices_call_back(int flag)
89 {
90 surfaceEvaluator.put_vertices_call_back(flag);
91 }
92
93 int get_callback_auto_normal()
94 {
95 return surfaceEvaluator.get_callback_auto_normal();
96 }
97
98 void put_callback_auto_normal(int flag)
99 {
100 surfaceEvaluator.put_callback_auto_normal(flag);
101 }
102
103 void setNurbsCallbackData(void* userData)
104 {
105 curveEvaluator.set_callback_userData(userData);
106 surfaceEvaluator.set_callback_userData(userData);
107 }
108
109
110 //for LOD
111 void LOD_eval_list(int level)
112 {
113 surfaceEvaluator.LOD_eval_list(level);
114 }
115
116 //NEWCALLBACK
117 int is_callback()
118 {
119 return callbackFlag;
120 }
121 void put_callbackFlag(int flag)
122 {
123 callbackFlag = flag;
124 surfaceEvaluator.put_vertices_call_back(flag);
125 curveEvaluator.put_vertices_call_back(flag);
126 }
127
128 private:
129 GLboolean autoloadmode;
130 OpenGLSurfaceEvaluator surfaceEvaluator;
131 OpenGLCurveEvaluator curveEvaluator;
132
133 void loadSamplingMatrix( const GLfloat vmat[4][4],
134 const GLint viewport[4] );
135 void loadCullingMatrix( GLfloat vmat[4][4] );
136 static void grabGLMatrix( GLfloat vmat[4][4] );
137 static void transform4d( GLfloat A[4], GLfloat B[4],
138 GLfloat mat[4][4] );
139 static void multmatrix4d( GLfloat n[4][4], const GLfloat left[4][4],
140 const GLfloat right[4][4] );
141
142 int callbackFlag;
143 };
144
145 #endif /* __gluglrenderer_h_ */