NAME

SbSphereProjector — sphere projector

INHERITS FROM

SbProjector > SbSphereProjector

SYNOPSIS

#include <Inventor/projectors/SbSphereProjector.h>

Methods from class SbSphereProjector:

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

virtual SbRotation getRotation(const SbVec3f &point1, const SbVec3f &point2)

void setSphere(const SbSphere &sph)

const SbSphere & getSphere() const

void setOrientToEye(SbBool orientToEye)

SbBool isOrientToEye() const

void setFront(SbBool isFront)

SbBool isFront() const

SbBool isPointInFront(const SbVec3f &point) const

Methods from class SbProjector:

virtual SbVec3f project(const SbVec2f &point)

virtual void setViewVolume(const SbViewVolume &vol)

const SbViewVolume & getViewVolume() const

virtual void setWorkingSpace(const SbMatrix &space)

const SbMatrix & getWorkingSpace() const

virtual SbProjector * copy() const

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.

METHODS

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

Apply the projector using the given point, returning the point in three dimensions that it projects to. 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.

virtual SbRotation getRotation(const SbVec3f &point1, const SbVec3f &point2)

Get a rotation given two points on this sphere projector. The rotation will be on the surface of the sphere.

void setSphere(const SbSphere &sph)

const SbSphere & getSphere() const

Set and get the sphere on which to project points. The default sphere has radius 1.0.

void setOrientToEye(SbBool orientToEye)

SbBool isOrientToEye() const

Set and get whether the projector should always be oriented towards the eye. Set to FALSE if the tolerance should be evaluated in working space.

void setFront(SbBool isFront)

SbBool isFront() const

SbBool isPointInFront(const SbVec3f &point) const

Set and get whether the projector should intersect the half of the sphere that faces the eye. Set to FALSE if the projector should intersect with the rear half.

SEE ALSO

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