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#ifndef COIN_SBDPVIEWVOLUME_H
#define COIN_SBDPVIEWVOLUME_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 <stdio.h>

#include <Inventor/SbBasic.h>
#include <Inventor/SbVec3d.h>

class SbBox3f;
class SbDPLine;
class SbDPMatrix;
class SbPlane;
class SbDPRotation;
class SbVec2d;
class SbViewVolume;

class COIN_DLL_API SbDPViewVolume {
public:
  enum ProjectionType { ORTHOGRAPHIC = 0, PERSPECTIVE = 1 };

public:
  SbDPViewVolume(void);
  ~SbDPViewVolume(void);
  void getMatrices(SbDPMatrix& affine, SbDPMatrix& proj) const;
  SbDPMatrix getMatrix(void) const;
  SbDPMatrix getCameraSpaceMatrix(void) const;
  void projectPointToLine(const SbVec2d& pt, SbDPLine& line) const;
  void projectPointToLine(const SbVec2d& pt,
                          SbVec3d& line0, SbVec3d& line1) const;
  void projectToScreen(const SbVec3d& src, SbVec3d& dst) const;
  SbPlane getPlane(const double distFromEye) const;
  SbVec3d getSightPoint(const double distFromEye) const;
  SbVec3d getPlanePoint(const double distFromEye,
                        const SbVec2d& normPoint) const;
  SbDPRotation getAlignRotation(SbBool rightAngleOnly = FALSE) const;
  double getWorldToScreenScale(const SbVec3d& worldCenter,
                              double normRadius) const;
  SbVec2d projectBox(const SbBox3f& box) const;
  SbDPViewVolume narrow(double left, double bottom,
                      double right, double top) const;
  SbDPViewVolume narrow(const SbBox3f& box) const;
  void ortho(double left, double right,
             double bottom, double top,
             double nearval, double farval);
  void perspective(double fovy, double aspect,
                   double nearval, double farval);
  void frustum(double left, double right,
               double bottom, double top,
               double nearval, double farval);
  void rotateCamera(const SbDPRotation& q);
  void translateCamera(const SbVec3d& v);
  SbVec3d zVector(void) const;
  SbDPViewVolume zNarrow(double nearval, double farval) const;
  void scale(double factor);
  void scaleWidth(double ratio);
  void scaleHeight(double ratio);
  ProjectionType getProjectionType(void) const;
  const SbVec3d& getProjectionPoint(void) const;
  const SbVec3d& getProjectionDirection(void) const;
  double getNearDist(void) const;
  double getWidth(void) const;
  double getHeight(void) const;
  double getDepth(void) const;

  void print(FILE * fp) const;
  void getViewVolumePlanes(SbPlane planes[6]) const;
  void transform(const SbDPMatrix &matrix);
  SbVec3d getViewUp(void) const;

  void copyValues(SbViewVolume & vv);

private:

  ProjectionType type;
  SbVec3d projPoint;
  SbVec3d projDir;
  double nearDist;
  double nearToFar;
  SbVec3d llf;
  SbVec3d lrf;
  SbVec3d ulf;

  void getPlaneRectangle(const double depth, SbVec3d & lowerleft,
                         SbVec3d & lowerright, SbVec3d & upperleft,
                         SbVec3d & upperright) const;
};

#endif // !COIN_SBDPVIEWVOLUME_H