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#ifndef COIN_SONORMALGENERATOR_H
#define COIN_SONORMALGENERATOR_H
/**************************************************************************\
*
* This file is part of the Coin 3D visualization library.
* Copyright (C) 1998-2004 by Systems in Motion. All rights reserved.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* ("GPL") version 2 as published by the Free Software Foundation.
* See the file LICENSE.GPL at the root directory of this source
* distribution for additional information about the GNU GPL.
*
* For using Coin with software that can not be combined with the GNU
* GPL, and for taking advantage of the additional benefits of our
* support services, please contact Systems in Motion about acquiring
* a Coin Professional Edition License.
*
* See <URL:http://www.coin3d.org/> for more information.
*
* Systems in Motion, Teknobyen, Abels Gate 5, 7030 Trondheim, NORWAY.
* <URL:http://www.sim.no/>.
*
\**************************************************************************/
#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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