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SbPlane.h

00001 /**************************************************************************\
00002  *
00003  *  This file is part of the Coin 3D visualization library.
00004  *  Copyright (C) 1998-2002 by Systems in Motion. All rights reserved.
00005  *
00006  *  This library is free software; you can redistribute it and/or
00007  *  modify it under the terms of the GNU Lesser General Public License
00008  *  version 2.1 as published by the Free Software Foundation. See the
00009  *  file LICENSE.LGPL at the root directory of the distribution for
00010  *  more details.
00011  *
00012  *  If you want to use Coin for applications not compatible with the
00013  *  LGPL, please contact SIM to acquire a Professional Edition license.
00014  *
00015  *  Systems in Motion, Prof Brochs gate 6, 7030 Trondheim, NORWAY
00016  *  http://www.sim.no support@sim.no Voice: +47 22114160 Fax: +47 22207097
00017  *
00018 \**************************************************************************/
00019 
00020 #ifndef COIN_SBPLANE_H
00021 #define COIN_SBPLANE_H
00022 
00023 #include <stdio.h>
00024 
00025 #include <Inventor/SbVec3f.h>
00026 
00027 class SbLine;
00028 class SbMatrix;
00029 
00030 class COIN_DLL_API SbPlane {
00031 public:
00032   SbPlane(void);
00033   SbPlane(const SbVec3f& normal, const float D);
00034   SbPlane(const SbVec3f& p0, const SbVec3f& p1, const SbVec3f& p2);
00035   SbPlane(const SbVec3f& normal, const SbVec3f& point);
00036 
00037   void offset(const float d);
00038   SbBool intersect(const SbLine& l, SbVec3f& intersection) const;
00039   void transform(const SbMatrix& matrix);
00040   SbBool isInHalfSpace(const SbVec3f& point) const;
00041   float getDistance(const SbVec3f &point) const;
00042   const SbVec3f& getNormal(void) const;
00043   float getDistanceFromOrigin(void) const;
00044   friend COIN_DLL_API int operator ==(const SbPlane& p1, const SbPlane& p2);
00045   friend COIN_DLL_API int operator !=(const SbPlane& p1, const SbPlane& p2);
00046 
00047   void print(FILE * file) const;
00048 
00049 private:
00050   SbVec3f normal;
00051   float distance;
00052 };
00053 
00054 COIN_DLL_API int operator ==(const SbPlane& p1, const SbPlane& p2);
00055 COIN_DLL_API int operator !=(const SbPlane& p1, const SbPlane& p2);
00056 
00057 #endif // !COIN_SBPLANE_H

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