SbViewVolume.h
#ifndef COIN_SBVIEWVOLUME_H
#define COIN_SBVIEWVOLUME_H
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#include <cstdio>
#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;
SbBox3f intersectionBox(const SbBox3f & box) const;
SbBool outsideTest(const SbPlane & p,
const SbVec3f & bmin, const SbVec3f & bmax) const;
const SbDPViewVolume & getDPViewVolume(void) 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:
void getPlaneRectangle(const float depth, SbVec3f & lowerleft,
SbVec3f & lowerright, SbVec3f & upperleft,
SbVec3f & upperright) const;
SbDPViewVolume dpvv;
};
#endif // !COIN_SBVIEWVOLUME_H
SbBox3f
The SbBox3f class is an abstraction for an axis aligned 3 dimensional box.
Definition SbBox3f.h:46
SbDPViewVolume
The SbDPViewVolume class is a double precision viewing volume in 3D space.
Definition SbDPViewVolume.h:49
SbLine
The SbLine class represents a line in 3D space.
Definition SbLine.h:41
SbMatrix
The SbMatrix class is a 4x4 dimensional representation of a matrix.
Definition SbMatrix.h:47
SbPlane
The SbPlane class represents a plane in 3D space.
Definition SbPlane.h:43
SbRotation
The SbRotation class represents a rotation in 3D space.
Definition SbRotation.h:44
SbVec2f
The SbVec2f class is a 2 dimensional vector with floating point coordinates.
Definition SbVec2f.h:49
SbVec3f
The SbVec3f class is a 3 dimensional vector with floating point coordinates.
Definition SbVec3f.h:51
SbViewVolume
The SbViewVolume class is a viewing volume in 3D space.
Definition SbViewVolume.h:50
SbViewVolume::nearDist
float nearDist
Definition SbViewVolume.h:123
SbViewVolume::lrf
SbVec3f lrf
Definition SbViewVolume.h:126
SbViewVolume::projDir
SbVec3f projDir
Definition SbViewVolume.h:122
SbViewVolume::type
ProjectionType type
Definition SbViewVolume.h:120
SbViewVolume::nearToFar
float nearToFar
Definition SbViewVolume.h:124
SbViewVolume::ProjectionType
ProjectionType
Definition SbViewVolume.h:52
SbViewVolume::ORTHOGRAPHIC
@ ORTHOGRAPHIC
Definition SbViewVolume.h:52
SbViewVolume::PERSPECTIVE
@ PERSPECTIVE
Definition SbViewVolume.h:52
SbViewVolume::projPoint
SbVec3f projPoint
Definition SbViewVolume.h:121
SbViewVolume::SbViewVolume
SbViewVolume(void)
Definition SbViewVolume.cpp:180
SbViewVolume::ulf
SbVec3f ulf
Definition SbViewVolume.h:127
SbViewVolume::llf
SbVec3f llf
Definition SbViewVolume.h:125