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#ifndef COIN_SBVIEWVOLUME_H
#define COIN_SBVIEWVOLUME_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/SbVec3f.h>
#include <Inventor/SbDPViewVolume.h>
class SbBox3f;
class SbLine;
class SbMatrix;
class SbPlane;
class SbRotation;
class SbVec2f;
class SbVec3f;
class COIN_DLL_API SbViewVolume {
public:
enum ProjectionType { ORTHOGRAPHIC = 0, PERSPECTIVE = 1 };
public:
SbViewVolume(void);
~SbViewVolume(void);
void getMatrices(SbMatrix& affine, SbMatrix& proj) const;
SbMatrix getMatrix(void) const;
SbMatrix getCameraSpaceMatrix(void) const;
void projectPointToLine(const SbVec2f& pt, SbLine& line) const;
void projectPointToLine(const SbVec2f& pt,
SbVec3f& line0, SbVec3f& line1) const;
void projectToScreen(const SbVec3f& src, SbVec3f& dst) const;
SbPlane getPlane(const float distFromEye) const;
SbVec3f getSightPoint(const float distFromEye) const;
SbVec3f getPlanePoint(const float distFromEye,
const SbVec2f& normPoint) const;
SbRotation getAlignRotation(SbBool rightAngleOnly = FALSE) const;
float getWorldToScreenScale(const SbVec3f& worldCenter,
float normRadius) const;
SbVec2f projectBox(const SbBox3f& box) const;
SbViewVolume narrow(float left, float bottom,
float right, float top) const;
SbViewVolume narrow(const SbBox3f& box) const;
void ortho(float left, float right,
float bottom, float top,
float nearval, float farval);
void perspective(float fovy, float aspect,
float nearval, float farval);
void frustum(float left, float right,
float bottom, float top,
float nearval, float farval);
void rotateCamera(const SbRotation& q);
void translateCamera(const SbVec3f& v);
SbVec3f zVector(void) const;
SbViewVolume zNarrow(float nearval, float farval) const;
void scale(float factor);
void scaleWidth(float ratio);
void scaleHeight(float ratio);
ProjectionType getProjectionType(void) const;
const SbVec3f& getProjectionPoint(void) const;
const SbVec3f& getProjectionDirection(void) const;
float getNearDist(void) const;
float getWidth(void) const;
float getHeight(void) const;
float getDepth(void) const;
void print(FILE * fp) const;
void getViewVolumePlanes(SbPlane planes[6]) const;
void transform(const SbMatrix &matrix);
SbVec3f getViewUp(void) const;
SbBool intersect(const SbVec3f & p) const;
SbBool intersect(const SbVec3f & p0, const SbVec3f & p1,
SbVec3f & closestpoint) const;
SbBool intersect(const SbBox3f & box) const;
SbBool outsideTest(const SbPlane & p,
const SbVec3f & bmin, const SbVec3f & bmax) const;
public:
// Warning! It's extremely bad design to keep these data members
// public, but we have no choice since this is how it's done in
// the original SGI Open Inventor. We've seen example code that
// use these variables directly so we'll have to be compatible
// here. Please don't use these variables directly unless you're
// very sure about what you're doing.
ProjectionType type;
SbVec3f projPoint;
SbVec3f projDir;
float nearDist;
float nearToFar;
SbVec3f llf;
SbVec3f lrf;
SbVec3f ulf;
private:
SbDPViewVolume dpvv;
};
#endif // !COIN_SBVIEWVOLUME_H
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