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#ifndef COIN_SBDPVIEWVOLUME_H
#define COIN_SBDPVIEWVOLUME_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 <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
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