Coin: SoNormalGenerator.h Source File

| Coin3D is Free Software, published under the BSD 3-clause license. | https://coin3d.github.io https://www.kongsberg.com/en/kogt/

SoNormalGenerator.h
1#ifndef COIN_SONORMALGENERATOR_H
2#define COIN_SONORMALGENERATOR_H
3
4/**************************************************************************\
5 * Copyright (c) Kongsberg Oil & Gas Technologies AS
6 * All rights reserved.
7 *
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions are
10 * met:
11 *
12 * Redistributions of source code must retain the above copyright notice,
13 * this list of conditions and the following disclaimer.
14 *
15 * Redistributions in binary form must reproduce the above copyright
16 * notice, this list of conditions and the following disclaimer in the
17 * documentation and/or other materials provided with the distribution.
18 *
19 * Neither the name of the copyright holder nor the names of its
20 * contributors may be used to endorse or promote products derived from
21 * this software without specific prior written permission.
22 *
23 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
24 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
25 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
26 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
27 * HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
28 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
29 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
30 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
31 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
32 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
33 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
34\**************************************************************************/
35
36#include <Inventor/SbVec3f.h>
37#include <Inventor/SbBSPTree.h>
38#include <Inventor/lists/SbList.h>
39#include <Inventor/system/inttypes.h>
40
41 class COIN_DLL_API SoNormalGenerator {
42public:
43 SoNormalGenerator(const SbBool ccw, const int approxVertices = 64);
44 ~SoNormalGenerator();
45
46 void reset(const SbBool ccw);
47
48 void beginPolygon();
49 void polygonVertex(const SbVec3f &v);
50 void endPolygon();
51
52 void triangle(const SbVec3f &v0,
53 const SbVec3f &v1,
54 const SbVec3f &v2);
55 void quad(const SbVec3f &v0,
56 const SbVec3f &v1,
57 const SbVec3f &v2,
58 const SbVec3f &v3);
59
60 void generate(const float creaseAngle,
61 const int32_t * striplens = NULL,
62 const int numstrips = 0);
63
64 void generatePerStrip(const int32_t * striplens,
65 const int numstrips);
66 void generatePerFace(void);
67 void generateOverall(void);
68
69 // call these only after generate
70 int getNumNormals() const;
71 void setNumNormals(const int num);
72 const SbVec3f *getNormals() const;
73 const SbVec3f & getNormal(const int32_t i) const;
74 void setNormal(const int32_t index, const SbVec3f &normal);
75
76private:
77 SbBSPTree bsp;
78 SbList <int> vertexList;
79 SbList <int> vertexFace;
80 SbList <SbVec3f> faceNormals;
81 SbList <SbVec3f> vertexNormals;
82
83 SbBool ccw;
84 SbBool perVertex;
85 int currFaceStart;
86
87 SbVec3f calcFaceNormal();
88};
89
90#endif // !COIN_SONORMALGENERATOR_H
SbBSPTree
The SbBSPTree class provides a binary space partitioning container.
Definition SbBSPTree.h:54
SbVec3f
The SbVec3f class is a 3 dimensional vector with floating point coordinates.
Definition SbVec3f.h:51
SoNormalGenerator
The SoNormalGenerator class is used to generate normals.
Definition SoNormalGenerator.h:41