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#ifndef COIN_SONORMALGENERATOR_H
#define COIN_SONORMALGENERATOR_H
/**************************************************************************\
* Copyright (c) Kongsberg Oil & Gas Technologies AS
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are
* met:
*
* Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
*
* Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* Neither the name of the copyright holder nor the names of its
* contributors may be used to endorse or promote products derived from
* this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
* HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
\**************************************************************************/
#include <Inventor/SbVec3f.h>
#include <Inventor/SbBSPTree.h>
#include <Inventor/lists/SbList.h>
#include <Inventor/system/inttypes.h>
class COIN_DLL_API SoNormalGenerator {
public:
SoNormalGenerator(const SbBool ccw, const int approxVertices = 64);
~SoNormalGenerator();
void reset(const SbBool ccw);
void beginPolygon();
void polygonVertex(const SbVec3f &v);
void endPolygon();
void triangle(const SbVec3f &v0,
const SbVec3f &v1,
const SbVec3f &v2);
void quad(const SbVec3f &v0,
const SbVec3f &v1,
const SbVec3f &v2,
const SbVec3f &v3);
void generate(const float creaseAngle,
const int32_t * striplens = NULL,
const int numstrips = 0);
void generatePerStrip(const int32_t * striplens,
const int numstrips);
void generatePerFace(void);
void generateOverall(void);
// call these only after generate
int getNumNormals() const;
void setNumNormals(const int num);
const SbVec3f *getNormals() const;
const SbVec3f & getNormal(const int32_t i) const;
void setNormal(const int32_t index, const SbVec3f &normal);
private:
SbBSPTree bsp;
SbList <int> vertexList;
SbList <int> vertexFace;
SbList <SbVec3f> faceNormals;
SbList <SbVec3f> vertexNormals;
SbBool ccw;
SbBool perVertex;
int currFaceStart;
SbVec3f calcFaceNormal();
};
#endif // !COIN_SONORMALGENERATOR_H
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