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SoNormalGenerator.h
1 #ifndef COIN_SONORMALGENERATOR_H
2 #define COIN_SONORMALGENERATOR_H
3 
4 /**************************************************************************\
5  *
6  * This file is part of the Coin 3D visualization library.
7  * Copyright (C) by Kongsberg Oil & Gas Technologies.
8  *
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11  * ("GPL") version 2 as published by the Free Software Foundation.
12  * See the file LICENSE.GPL at the root directory of this source
13  * distribution for additional information about the GNU GPL.
14  *
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16  * GPL, and for taking advantage of the additional benefits of our
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19  *
20  * See http://www.coin3d.org/ for more information.
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24  *
25 \**************************************************************************/
26 
27 #include <Inventor/SbVec3f.h>
28 #include <Inventor/SbBSPTree.h>
29 #include <Inventor/lists/SbList.h>
30 #include <Inventor/system/inttypes.h>
31 
32 class COIN_DLL_API SoNormalGenerator {
33 public:
34  SoNormalGenerator(const SbBool ccw, const int approxVertices = 64);
36 
37  void reset(const SbBool ccw);
38 
39  void beginPolygon();
40  void polygonVertex(const SbVec3f &v);
41  void endPolygon();
42 
43  void triangle(const SbVec3f &v0,
44  const SbVec3f &v1,
45  const SbVec3f &v2);
46  void quad(const SbVec3f &v0,
47  const SbVec3f &v1,
48  const SbVec3f &v2,
49  const SbVec3f &v3);
50 
51  void generate(const float creaseAngle,
52  const int32_t * striplens = NULL,
53  const int numstrips = 0);
54 
55  void generatePerStrip(const int32_t * striplens,
56  const int numstrips);
57  void generatePerFace(void);
58  void generateOverall(void);
59 
60  // call these only after generate
61  int getNumNormals() const;
62  void setNumNormals(const int num);
63  const SbVec3f *getNormals() const;
64  const SbVec3f & getNormal(const int32_t i) const;
65  void setNormal(const int32_t index, const SbVec3f &normal);
66 
67 private:
68  SbBSPTree bsp;
69  SbList <int> vertexList;
70  SbList <int> vertexFace;
71  SbList <SbVec3f> faceNormals;
72  SbList <SbVec3f> vertexNormals;
73 
74  SbBool ccw;
75  SbBool perVertex;
76  int currFaceStart;
77 
78  SbVec3f calcFaceNormal();
79 };
80 
81 #endif // !COIN_SONORMALGENERATOR_H
The SbBSPTree class provides a binary space partitioning container.This class can be used to organize...
Definition: SbBSPTree.h:45
The SbVec3f class is a 3 dimensional vector with floating point coordinates.This vector class is used...
Definition: SbVec3f.h:40
The SoNormalGenerator class is used to generate normals.FIXME: document properly. ...
Definition: SoNormalGenerator.h:32

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