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# SbPlane.h

    00001 #ifndef COIN_SBPLANE_H
    00002 #define COIN_SBPLANE_H
    00003
    00004 /**************************************************************************\
    00005  *
    00006  *  This file is part of the Coin 3D visualization library.
    00007  *  Copyright (C) 1998-2003 by Systems in Motion.  All rights reserved.
    00008  *
    00009  *  This library is free software; you can redistribute it and/or
    00010  *  modify it under the terms of the GNU General Public License
    00011  *  ("GPL") version 2 as published by the Free Software Foundation.
    00012  *  See the file LICENSE.GPL at the root directory of this source
    00013  *  distribution for additional information about the GNU GPL.
    00014  *
    00015  *  For using Coin with software that can not be combined with the GNU
    00016  *  GPL, and for taking advantage of the additional benefits of our
    00017  *  support services, please contact Systems in Motion about acquiring
    00018  *  a Coin Professional Edition License.
    00019  *
    00020  *  See <URL:http://www.coin3d.org> for  more information.
    00021  *
    00022  *  Systems in Motion, Teknobyen, Abels Gate 5, 7030 Trondheim, NORWAY.
    00023  *  <URL:http://www.sim.no>.
    00024  *
    00025 \**************************************************************************/
    00026
    00027 #include <stdio.h>
    00028
    00029 #include <Inventor/SbVec3f.h>
    00030
    00031 class SbLine;
    00032 class SbMatrix;
    00033
    00034 class COIN_DLL_API SbPlane {
    00035 public:
    00036   SbPlane(void);
    00037   SbPlane(const SbVec3f& normal, const float D);
    00038   SbPlane(const SbVec3f& p0, const SbVec3f& p1, const SbVec3f& p2);
    00039   SbPlane(const SbVec3f& normal, const SbVec3f& point);
    00040
    00041   void offset(const float d);
    00042   SbBool intersect(const SbLine& l, SbVec3f& intersection) const;
    00043   void transform(const SbMatrix& matrix);
    00044   SbBool isInHalfSpace(const SbVec3f& point) const;
    00045   float getDistance(const SbVec3f &point) const;
    00046   const SbVec3f& getNormal(void) const;
    00047   float getDistanceFromOrigin(void) const;
    00048   friend COIN_DLL_API int operator ==(const SbPlane& p1, const SbPlane& p2);
    00049   friend COIN_DLL_API int operator !=(const SbPlane& p1, const SbPlane& p2);
    00050
    00051   void print(FILE * file) const;
    00052
    00053   SbBool intersect(const SbPlane & pl, SbLine & line);
    00054
    00055 private:
    00056   SbVec3f normal;
    00057   float distance;
    00058 };
    00059
    00060 COIN_DLL_API int operator ==(const SbPlane& p1, const SbPlane& p2);
    00061 COIN_DLL_API int operator !=(const SbPlane& p1, const SbPlane& p2);
    00062
    00063 #endif // !COIN_SBPLANE_H