SbSphereProjector Class Reference

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

#include <Inventor/projectors/SbSphereProjector.h>

Inheritance diagram for SbSphereProjector:

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

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

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() [1/2]

SbSphereProjector::SbSphereProjector ( const SbBool orienttoeye )

protected

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

SbSphereProjector() [2/2]

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

protected

Constructor taking an explicit sphere projection definition.

Member Function Documentation

getRotation()

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

pure virtual

Returns rotation on the projection surface which reorients point1 to point2.

Implemented in SbSpherePlaneProjector, SbSphereSectionProjector, and SbSphereSheetProjector.

getSphere()

const SbSphere & SbSphereProjector::getSphere

(

void

)

const

Returns projection sphere.

intersectSphereFront()

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.

isFront()

SbBool SbSphereProjector::isFront

(

void

)

const

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

isOrientToEye()

SbBool SbSphereProjector::isOrientToEye

(

void

)

const

Returns the state of the sphere orientation flag.

isPointInFront()

SbBool SbSphereProjector::isPointInFront

(

const SbVec3f &

point

)

const

Check if point is on the front side or the back side of the cylinder.

projectAndGetRotation()

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()

setFront()

void SbSphereProjector::setFront

(

const SbBool

infront

)

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

setOrientToEye()

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.

setSphere()

void SbSphereProjector::setSphere

(

const SbSphere &

sph

)

Set sphere to project onto.

setWorkingSpace()

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.

Member Data Documentation

intersectFront

SbSphereProjector::intersectFront

protected

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

lastPoint

SbSphereProjector::lastPoint

protected

Stores the previously projected 3D point.

needSetup

SbSphereProjector::needSetup

protected

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

orientToEye

SbSphereProjector::orientToEye

protected

Which direction the spherical surface is oriented.

sphere

SbSphereProjector::sphere

protected

Projection sphere.

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

• SbSphereProjector.h
• SbSphereProjector.cpp