SbSphereSheetProjector(3IV)

NAME
SbSphereSheetProjector — sphere-sheet projector

INHERITS FROM
SbProjector > SbSphereProjector > SbSphereSheetProjector

SYNOPSIS
#include <Inventor/projectors/SbSphereSheetProjector.h>

Methods from class SbSphereSheetProjector:

SbSphereSheetProjector(SbBool orientToEye = TRUE)

SbSphereSheetProjector(const SbSphere &sph, SbBool orientToEye = TRUE)

~SbSphereSheetProjector()

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
SbSphereSheetProjector projects a window space point (usually based on the mouse location) onto the surface of a sphere with a hyperbolic sheet draped over it. This allows smooth transitions onto and off of the sphere. Two projected points can produce a rotation about the sphere's center. When the mouse position projects on to the sheet, the rotations will be as if the sheet is being dragged, causing the sphere to roll beneath it.

Incremental changes (delta rotation) can be computed during interactive sessions. Sphere projectors are typically used to write interactive 3D manipulators and viewers.

METHODS

SbSphereSheetProjector(SbBool orientToEye = TRUE)

SbSphereSheetProjector(const SbSphere &sph, SbBool orientToEye = TRUE)
Constructors. The first uses a default sphere centered at the origin with radius 1.0; the sphere is supplied in the second. The orientToEye parameter determines whether the sheet is perpendicular to the eye, or perpendicular to the sphere's Z axis. Setting that parameter to TRUE (the default) specifies that the sheet be perpendicular to the eye, which is most often the desired behavior.

The default view volume is undefined, and the working space is identity.

~SbSphereSheetProjector()
Destructor.

FILE FORMAT/DEFAULTS

SEE ALSO
SbCylinderProjector, SbCylinderPlaneProjector, SbCylinderSectionProjector, SbCylinderSheetProjector, SbLineProjector, SbPlaneProjector, SbSpherePlaneProjector