Sphere projector. More...

#include <Inventor/projectors/SbSphereProjector.h>

Inheritance diagram for SbSphereProjector:

Public Member Functions
virtual SbVec3f	project (const SbVec2f &point)=0
	Apply the projector using the given point, returning the point in three dimensions that it projects to.
SbVec3f	projectAndGetRotation (const SbVec2f &point, SbRotation &rot)
	Apply the projector using the given point, returning the point in three dimensions that it projects to.
virtual SbRotation	getRotation (const SbVec3f &point1, const SbVec3f &point2)=0
	Get a rotation given two points on this sphere projector.
void	setSphere (const SbSphere &sph)
	Set and get the sphere on which to project points.
const SbSphere &	getSphere () const
	Set and get the sphere on which to project points.
void	setOrientToEye (SbBool orientToEye)
	Set and get whether the projector should always be oriented towards the eye.
SbBool	isOrientToEye () const
	Set and get whether the projector should always be oriented towards the eye.
void	setFront (SbBool inFront)
	Set whether the projector should intersect the half of the sphere that faces the eye.
SbBool	isFront () const
	Get whether the projector should intersect the half of the sphere that faces the eye.
SbBool	isPointInFront (const SbVec3f &point) const
	Get whether the projector should intersect the half of the sphere that faces the eye.
virtual void	setWorkingSpace (const SbMatrix &space)
	Set the transform space to work in.
	~SbSphereProjector ()
	Destructor.
Protected Member Functions
	SbSphereProjector (SbBool orientToEye)
	Constructors The default sphere to use has a radius of 1.0 and is centered at (0,0,0).
	SbSphereProjector (const SbSphere &s, SbBool orientToEye)
SbBool	intersectSphereFront (const SbLine &l, SbVec3f &result)
	Just like sphere::intersect, except always returns the intersection that is in "front".
Protected Attributes
SbBool	intersectFront
	Are intersections done on the front half (if not, they're done on the back half) of the sphere?
SbSphere	sphere
	The sphere being used.
SbBool	orientToEye
	TRUE if always oriented to eye.
SbBool	needSetup
	Set TRUE whenever sphere, work space or orientation changes.
SbVec3f	lastPoint
	cached last point on this projector

Detailed Description

SbSphereProjector is an abstract base class for projectors that use a sphere in their projection. Sphere projectors are typically used to write interactive 3D manipulators and viewers.

See Also

: SbCylinderProjector, SbCylinderPlaneProjector, SbCylinderSectionProjector, SbCylinderSheetProjector, SbLineProjector, SbPlaneProjector, SbSpherePlaneProjector, SbSphereSectionProjector, SbSphereSheetProjector

Definition at line 79 of file SbSphereProjector.h.

Constructor & Destructor Documentation

SbSphereProjector::~SbSphereProjector ( ) [inline]

Definition at line 131 of file SbSphereProjector.h.

SbSphereProjector::SbSphereProjector ( SbBool orientToEye ) [protected]

SbSphereProjector::SbSphereProjector	(	const SbSphere &	s,
		SbBool	orientToEye
	)		`[protected]`

Member Function Documentation

virtual SbRotation SbSphereProjector::getRotation	(	const SbVec3f &	point1,
		const SbVec3f &	point2
	)		`[pure virtual]`

The rotation will be on the surface of the sphere.

Implemented in SbSpherePlaneProjector, SbSphereSectionProjector, and SbSphereSheetProjector.

const SbSphere& SbSphereProjector::getSphere ( ) const [inline]

The default sphere has radius 1.0.

Definition at line 107 of file SbSphereProjector.h.

SbBool SbSphereProjector::intersectSphereFront	(	const SbLine &	l,
		SbVec3f &	result
	)		`[protected]`

SbBool SbSphereProjector::isFront ( ) const [inline]

Definition at line 122 of file SbSphereProjector.h.

SbBool SbSphereProjector::isOrientToEye ( ) const [inline]

Set to FALSE if the tolerance should be evaluated in working space.

Definition at line 114 of file SbSphereProjector.h.

SbBool SbSphereProjector::isPointInFront ( const SbVec3f & point ) const

virtual SbVec3f SbSphereProjector::project ( const SbVec2f & point ) [pure virtual]

The point should be normalized from 0-1, with (0,0) at the lower-left.

Implements SbProjector.

Implemented in SbSpherePlaneProjector, SbSphereSectionProjector, and SbSphereSheetProjector.

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

This also returns in rot a rotation on the surface of the sphere from the last projected point to this one. The passed point should be normalized (i.e. lie in the range [0.0,1.0]), with (0,0) at the lower-left.

void SbSphereProjector::setFront ( SbBool inFront )

Set to FALSE if the projector should intersect with the rear half.

void SbSphereProjector::setOrientToEye ( SbBool orientToEye )

Set to FALSE if the tolerance should be evaluated in working space.

void SbSphereProjector::setSphere ( const SbSphere & sph )

The default sphere has radius 1.0.

virtual void SbSphereProjector::setWorkingSpace ( const SbMatrix & space ) [virtual]

Reimplemented from SbProjector.