man SbSphereSheetProjector () - sphere-sheet projector
NAME
SbSphereSheetProjector - sphere-sheet projector
INHERITS FROM
SbProjector > SbSphereProjector > SbSphereSheetProjector
SYNOPSIS
#include <Inventor/projectors/SbSphereSheetProjector.h>
Methods from class SbSphereSheetProjector:
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SbSphereSheetProjector(SbBool orientToEye = TRUE)
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SbSphereSheetProjector(const SbSphere &sph, SbBool orientToEye = TRUE)
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~SbSphereSheetProjector()
Methods from class SbSphereProjector:
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projectAndGetRotation(const SbVec2f &point, SbRotation &rot)
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getRotation(const SbVec3f &point1, const SbVec3f &point2)
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setSphere(const SbSphere &sph)
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getSphere() const
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setOrientToEye(SbBool orientToEye)
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isOrientToEye() const
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setFront(SbBool isFront)
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isFront() const
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isPointInFront(const SbVec3f &point) const
Methods from class SbProjector:
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project(const SbVec2f &point)
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setViewVolume(const SbViewVolume &vol)
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getViewVolume() const
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setWorkingSpace(const SbMatrix &space)
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getWorkingSpace() const
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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
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SbSphereSheetProjector(SbBool orientToEye = TRUE)
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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.
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~SbSphereSheetProjector()
Destructor.
SEE ALSO
SbCylinderProjector, SbCylinderPlaneProjector, SbCylinderSectionProjector, SbCylinderSheetProjector, SbLineProjector, SbPlaneProjector, SbSpherePlaneProjector