1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
|
/*
*
* Copyright (C) 2000 Silicon Graphics, Inc. All Rights Reserved.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* Further, this software is distributed without any warranty that it is
* free of the rightful claim of any third person regarding infringement
* or the like. Any license provided herein, whether implied or
* otherwise, applies only to this software file. Patent licenses, if
* any, provided herein do not apply to combinations of this program with
* other software, or any other product whatsoever.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*
* Contact information: Silicon Graphics, Inc., 1600 Amphitheatre Pkwy,
* Mountain View, CA 94043, or:
*
* http://www.sgi.com
*
* For further information regarding this notice, see:
*
* http://oss.sgi.com/projects/GenInfo/NoticeExplan/
*
*/
// -*- C++ -*-
/*
* Copyright (C) 1990,91 Silicon Graphics, Inc.
*
_______________________________________________________________________
______________ S I L I C O N G R A P H I C S I N C . ____________
|
| $Revision: 1.1.1.1 $
|
| Description:
| This file defines the SoFaceSet node class.
|
| Author(s) : Paul S. Strauss, Gavin Bell
|
______________ S I L I C O N G R A P H I C S I N C . ____________
_______________________________________________________________________
*/
#ifndef _SO_FACE_SET_
#define _SO_FACE_SET_
#include <Inventor/SbLinear.h>
#include <Inventor/fields/SoMFInt32.h>
#include <Inventor/nodes/SoNonIndexedShape.h>
//////////////////////////////////////////////////////////////////////////////
//
// Class: SoFaceSet
//
// Set of faces. Each face consists of 3 or more vertices, taken in
// order from the current coordinates. The startIndex field gives the
// starting coordinate index for the first face. The number of
// vertices in each face is determined by successive entries in the
// numVertices field.
//
//////////////////////////////////////////////////////////////////////////////
// This value, when used in the numVertices field, means that the
// corresponding face should use the rest of the vertices
#define SO_FACE_SET_USE_REST_OF_VERTICES (-1)
class SoCoordinateElement;
class SoNormalBundle;
class SoState;
// C-api: prefix=SoFSet
// C-api: public=startIndex, numVertices, vertexProperty
class SoFaceSet : public SoNonIndexedShape {
SO_NODE_HEADER(SoFaceSet);
public:
// Fields - some inherited from SoNonIndexedShape
SoMFInt32 numVertices; // Number of vertices per face
// Constructor
SoFaceSet();
SoEXTENDER public:
// Implement actions
virtual void GLRender(SoGLRenderAction *action);
// Generates default normals using the given normal bundle.
// Returns TRUE.
virtual SbBool generateDefaultNormals(SoState *state,
SoNormalBundle *nb);
// Typedef of pointer to method on FaceSet;
// This will be used to simplify declaration and initialization.
typedef void (SoFaceSet::*PMFS)(SoGLRenderAction *);
SoINTERNAL public:
static void initClass();
// This enum is used to indicate the current material or normal binding
enum Binding {
OVERALL, PER_FACE, PER_VERTEX
};
protected:
// Generates triangles representing faces
virtual void generatePrimitives(SoAction *action);
// Computes bounding box of face set
virtual void computeBBox(SoAction *action, SbBox3f &box,
SbVec3f ¢er);
// Overrides standard method to create an SoFaceDetail instance
virtual SoDetail * createTriangleDetail(SoRayPickAction *action,
const SoPrimitiveVertex *v1,
const SoPrimitiveVertex *v2,
const SoPrimitiveVertex *v3,
SoPickedPoint *pp);
~SoFaceSet();
private:
// Returns current material or normal binding from action's state
Binding getMaterialBinding(SoAction *action);
Binding getNormalBinding(SoAction *action,
SoNormalBundle *nb);
// Figures out normals, if necessary.
SbBool figureNormals(SoState *state, SoNormalBundle *nb);
// set numTris/Quads/Faces to -1, checks SO_USE_REST_OF_VERTICES
// when notified
virtual void notify(SoNotList *list);
// Set number of triangles/quads/faces, based on coordIndex array.
void setupNumTrisQuadsFaces();
// Number of triangles, quads, (n>4)-vertex faces, total vertices
int numTris, numQuads, numFaces, totalNumVertices;
// keep track of whether we are using USE_REST_OF_VERTICES
SbBool usingUSE_REST;
SbBool nvNotifyEnabled;
// 18*3ferent render functions; names are formed like this:
// Om -- overall material
// Fm -- per face material Vm -- per vertex material
// On -- overall normal
// Fn -- per face normal Vm -- per vertex normal
// T -- per vertex texture coordinates
void TriOmOn(SoGLRenderAction *); void TriOmOnT(SoGLRenderAction *);
void TriOmFn(SoGLRenderAction *); void TriOmFnT(SoGLRenderAction *);
void TriOmVn(SoGLRenderAction *); void TriOmVnT(SoGLRenderAction *);
void TriFmOn(SoGLRenderAction *); void TriFmOnT(SoGLRenderAction *);
void TriFmFn(SoGLRenderAction *); void TriFmFnT(SoGLRenderAction *);
void TriFmVn(SoGLRenderAction *); void TriFmVnT(SoGLRenderAction *);
void TriVmOn(SoGLRenderAction *); void TriVmOnT(SoGLRenderAction *);
void TriVmFn(SoGLRenderAction *); void TriVmFnT(SoGLRenderAction *);
void TriVmVn(SoGLRenderAction *); void TriVmVnT(SoGLRenderAction *);
void QuadOmOn(SoGLRenderAction *); void QuadOmOnT(SoGLRenderAction *);
void QuadOmFn(SoGLRenderAction *); void QuadOmFnT(SoGLRenderAction *);
void QuadOmVn(SoGLRenderAction *); void QuadOmVnT(SoGLRenderAction *);
void QuadFmOn(SoGLRenderAction *); void QuadFmOnT(SoGLRenderAction *);
void QuadFmFn(SoGLRenderAction *); void QuadFmFnT(SoGLRenderAction *);
void QuadFmVn(SoGLRenderAction *); void QuadFmVnT(SoGLRenderAction *);
void QuadVmOn(SoGLRenderAction *); void QuadVmOnT(SoGLRenderAction *);
void QuadVmFn(SoGLRenderAction *); void QuadVmFnT(SoGLRenderAction *);
void QuadVmVn(SoGLRenderAction *); void QuadVmVnT(SoGLRenderAction *);
void GenOmOn(SoGLRenderAction *); void GenOmOnT(SoGLRenderAction *);
void GenOmFn(SoGLRenderAction *); void GenOmFnT(SoGLRenderAction *);
void GenOmVn(SoGLRenderAction *); void GenOmVnT(SoGLRenderAction *);
void GenFmOn(SoGLRenderAction *); void GenFmOnT(SoGLRenderAction *);
void GenFmFn(SoGLRenderAction *); void GenFmFnT(SoGLRenderAction *);
void GenFmVn(SoGLRenderAction *); void GenFmVnT(SoGLRenderAction *);
void GenVmOn(SoGLRenderAction *); void GenVmOnT(SoGLRenderAction *);
void GenVmFn(SoGLRenderAction *); void GenVmFnT(SoGLRenderAction *);
void GenVmVn(SoGLRenderAction *); void GenVmVnT(SoGLRenderAction *);
// Array of function pointers to render functions:
static PMFS TriRenderFunc[32];
static PMFS QuadRenderFunc[32];
static PMFS GenRenderFunc[32];
};
#endif /* _SO_FACE_SET_ */
|
