SbSphereProjector Class Reference

The SbSphereProjector class is the abstract base class for mapping to spherical surfaces.The sphere projectors map 2D points to various surface types based on spherical shapes. More...

#include <Inventor/projectors/SbSphereProjector.h>

Inheritance diagram for SbSphereProjector:

Public Member Functions
SbVec3f	projectAndGetRotation (const SbVec2f &point, SbRotation &rot)
virtual SbRotation	getRotation (const SbVec3f &point1, const SbVec3f &point2)=0
void	setSphere (const SbSphere &sph)
const SbSphere &	getSphere (void) const
void	setOrientToEye (const SbBool orienttoeye)
SbBool	isOrientToEye (void) const
void	setFront (const SbBool infront)
SbBool	isFront (void) const
SbBool	isPointInFront (const SbVec3f &point) const
virtual void	setWorkingSpace (const SbMatrix &space)
Public Member Functions inherited from SbProjector
virtual SbVec3f	project (const SbVec2f &point)=0
virtual void	setViewVolume (const SbViewVolume &vol)
const SbViewVolume &	getViewVolume (void) const
const SbMatrix &	getWorkingSpace (void) const
virtual SbProjector *	copy (void) const =0
virtual SbBool	tryProject (const SbVec2f &point, const float epsilon, SbVec3f &result)

Protected Member Functions
	SbSphereProjector (const SbBool orienttoeye)
	SbSphereProjector (const SbSphere &s, const SbBool orienttoeye)
SbBool	intersectSphereFront (const SbLine &l, SbVec3f &result)
Protected Member Functions inherited from SbProjector
	SbProjector (void)
virtual	~SbProjector ()
SbLine	getWorkingLine (const SbVec2f &point) const
float	findVanishingDistance (void) const
SbBool	verifyProjection (const SbVec3f &projpt) const

Protected Attributes
SbBool	intersectFront
SbSphere	sphere
SbBool	orientToEye
SbBool	needSetup
SbVec3f	lastPoint
Protected Attributes inherited from SbProjector
SbViewVolume	viewVol
SbMatrix	worldToWorking
SbMatrix	workingToWorld

Detailed Description

The SbSphereProjector class is the abstract base class for mapping to spherical surfaces.

The sphere projectors map 2D points to various surface types based on spherical shapes.

See also

SbCylinderProjector

Constructor & Destructor Documentation

SbSphereProjector::SbSphereProjector ( const SbBool  orienttoeye )

protected

Default constructor sets up a sphere at the origin with radius 1.

SbSphereProjector::SbSphereProjector ( const SbSphere &  s, const SbBool  orienttoeye  )

protected

Constructor taking an explicit sphere projection definition.

Member Function Documentation

SbVec3f SbSphereProjector::projectAndGetRotation	(	const SbVec2f &	point,
		SbRotation &	rot
	)

Project the 2D point to a 3D coordinate on the spherical surface, and find the rotation from the last projection to this one.

See also

project(), getRotation()

SbRotation SbSphereProjector::getRotation ( const SbVec3f &  point1, const SbVec3f &  point2  )

pure virtual

Returns rotation on the projection surface which re-orients point1 to point2.

Implemented in SbSphereSectionProjector, SbSpherePlaneProjector, and SbSphereSheetProjector.

void SbSphereProjector::setSphere

(

const SbSphere &

sph

)

Set sphere to project onto.

const SbSphere & SbSphereProjector::getSphere

(

void

)

const

Returns projection sphere.

void SbSphereProjector::setOrientToEye

(

const SbBool

orienttoeye

)

Sets whether or not the projection surface should be oriented towards the eye of the viewer. Default is TRUE.

SbBool SbSphereProjector::isOrientToEye

(

void

)

const

Returns the state of the sphere orientation flag.

void SbSphereProjector::setFront

(

const SbBool

infront

)

Set whether to intersect with the outside of the sphere (infront equal to TRUE), or the inside.

SbBool SbSphereProjector::isFront

(

void

)

const

Returns value of the flag which decides whether to intersect with the outside or inside of the sphere.

SbBool SbSphereProjector::isPointInFront

(

const SbVec3f &

point

)

const

Check if point is on the frontside or the backside of the cylinder.

void SbSphereProjector::setWorkingSpace ( const SbMatrix &  space )

virtual

Sets the matrix used for converting from the projector's coordinate system to the world coordinate system.

Reimplemented from SbProjector.

SbBool SbSphereProjector::intersectSphereFront ( const SbLine &  l, SbVec3f &  result  )

protected

Intersect line with the SbSphereProjector::sphere and place the intersection point (if any) in result. Considers setFront() settings.

Returns TRUE if line actually hits the sphere, FALSE if it doesn't intersect with it.

Member Data Documentation

SbSphereProjector::intersectFront

protected

Flag which says whether or not we should map to the outside or inside of the sphere surface.

SbSphereProjector::sphere

protected

Projection sphere.

SbSphereProjector::orientToEye

protected

Which direction the spherical surface is oriented.

SbSphereProjector::needSetup

protected

Set to TRUE whenever the projection surface needs to be recalculated according to the setting of the SbSphereProjector::orientToEye flag.

SbSphereProjector::lastPoint

protected

Stores the previously projected 3D point.

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The documentation for this class was generated from the following files:

• SbSphereProjector.h
• SbSphereProjector.cpp