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.
38 * $Date: 2001/07/17 15:39:13 $ $Revision: 1.3 $
39 * $Header: /home/krh/git/sync/mesa-cvs-repo/Mesa/src/glu/sgi/libnurbs/interface/glcurveval.h,v 1.3 2001/07/17 15:39:13 brianp Exp $
42 #ifndef __gluglcurveval_h_
43 #define __gluglcurveval_h_
48 #include "basiccrveval.h"
52 /*for internal evaluator callback stuff*/
53 #ifndef IN_MAX_BEZIER_ORDER
54 #define IN_MAX_BEZIER_ORDER 40 /*XXX should be bigger than machine order*/
57 #ifndef IN_MAX_DIMENSION
58 #define IN_MAX_DIMENSION 4
61 typedef struct curveEvalMachine
{
62 REAL uprime
; //cached previously evaluated uprime
63 int k
; //the dimension
68 REAL ctlpoints
[IN_MAX_BEZIER_ORDER
*IN_MAX_DIMENSION
];
69 REAL ucoeff
[IN_MAX_BEZIER_ORDER
];//cache the polynomial values
72 class OpenGLCurveEvaluator
: public BasicCurveEvaluator
{
74 OpenGLCurveEvaluator(void);
75 ~OpenGLCurveEvaluator(void);
76 void range1f(long, REAL
*, REAL
*);
77 void domain1f(REAL
, REAL
);
78 void addMap(CurveMap
*);
83 void map1f(long, REAL
, REAL
, long, long, REAL
*);
84 void mapgrid1f(long, REAL
, REAL
);
85 void mapmesh1f(long, long, long);
86 void evalpoint1i(long);
87 void evalcoord1f(long, REAL
);
93 void put_vertices_call_back(int flag
)
95 output_triangles
= flag
;
97 void putCallBack(GLenum which
, _GLUfuncptr fn
);
98 void set_callback_userData(void *data
)
103 /*------------------begin for curveEvalMachine------------*/
104 curveEvalMachine em_vertex
;
105 curveEvalMachine em_normal
;
106 curveEvalMachine em_color
;
107 curveEvalMachine em_texcoord
;
108 int vertex_flag
; //whether there is a vertex map or not
109 int normal_flag
; //whether there is a normal map or not
110 int color_flag
; //whether there is a color map or not
111 int texcoord_flag
; //whether there is a texture map or not
117 void inMap1f(int which
, //0: vert, 1: norm, 2: color, 3: tex
125 void inPreEvaluate(int order
, REAL vprime
, REAL
*coeff
);
126 void inDoDomain1(curveEvalMachine
*em
, REAL u
, REAL
*retPoint
);
127 void inDoEvalCoord1(REAL u
);
128 void inMapMesh1f(int umin
, int umax
);
130 void (GLAPIENTRY
*beginCallBackN
) (GLenum type
);
131 void (GLAPIENTRY
*endCallBackN
) (void);
132 void (GLAPIENTRY
*vertexCallBackN
) (const GLfloat
*vert
);
133 void (GLAPIENTRY
*normalCallBackN
) (const GLfloat
*normal
);
134 void (GLAPIENTRY
*colorCallBackN
) (const GLfloat
*color
);
135 void (GLAPIENTRY
*texcoordCallBackN
) (const GLfloat
*texcoord
);
137 void (GLAPIENTRY
*beginCallBackData
) (GLenum type
, void* data
);
138 void (GLAPIENTRY
*endCallBackData
) (void* data
);
139 void (GLAPIENTRY
*vertexCallBackData
) (const GLfloat
*vert
, void* data
);
140 void (GLAPIENTRY
*normalCallBackData
) (const GLfloat
*normal
, void* data
);
141 void (GLAPIENTRY
*colorCallBackData
) (const GLfloat
*color
, void* data
);
142 void (GLAPIENTRY
*texcoordCallBackData
) (const GLfloat
*texcoord
, void* data
);
144 void* userData
; //the opaque pointer for Data callback functions
145 void beginCallBack(GLenum type
, void* data
);
146 void endCallBack(void* data
);
147 void vertexCallBack(const GLfloat
*vert
, void *data
);
148 void normalCallBack(const GLfloat
*normal
, void* data
);
149 void colorCallBack(const GLfloat
*color
, void* data
);
150 void texcoordCallBack(const GLfloat
*texcoord
, void* data
);
153 /*------------------end for curveEvalMachine------------*/
156 int output_triangles
; //true 1; false 0
159 #endif /* __gluglcurveval_h_ */