/**************************************************************************\
 *
 *  This file is part of the Coin 3D visualization library.
 *  Copyright (C) 1998-2002 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 Lesser General Public License
 *  version 2.1 as published by the Free Software Foundation. See the
 *  file LICENSE.LGPL at the root directory of the distribution for
 *  more details.
 *
 *  If you want to use Coin for applications not compatible with the
 *  LGPL, please contact SIM to acquire a Professional Edition license.
 *
 *  Systems in Motion, Prof Brochs gate 6, 7030 Trondheim, NORWAY
 *  http://www.sim.no support@sim.no Voice: +47 22114160 Fax: +47 22207097
 *
\**************************************************************************/

#ifndef COIN_SBPLANE_H
#define COIN_SBPLANE_H

#include <stdio.h>

#include <Inventor/SbVec3f.h>

class SbLine;
class SbMatrix;

class COIN_DLL_API SbPlane {
public:
  SbPlane(void);
  SbPlane(const SbVec3f& normal, const float D);
  SbPlane(const SbVec3f& p0, const SbVec3f& p1, const SbVec3f& p2);
  SbPlane(const SbVec3f& normal, const SbVec3f& point);

  void offset(const float d);
  SbBool intersect(const SbLine& l, SbVec3f& intersection) const;
  void transform(const SbMatrix& matrix);
  SbBool isInHalfSpace(const SbVec3f& point) const;
  float getDistance(const SbVec3f &point) const;
  const SbVec3f& getNormal(void) const;
  float getDistanceFromOrigin(void) const;
  friend COIN_DLL_API int operator ==(const SbPlane& p1, const SbPlane& p2);
  friend COIN_DLL_API int operator !=(const SbPlane& p1, const SbPlane& p2);

  void print(FILE * file) const;

private:
  SbVec3f normal;
  float distance;
};

COIN_DLL_API int operator ==(const SbPlane& p1, const SbPlane& p2);
COIN_DLL_API int operator !=(const SbPlane& p1, const SbPlane& p2);

#endif // !COIN_SBPLANE_H
