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Man Pages


Manual Reference Pages  -  SBSPHERESHEETPROJECTOR (3)

NAME

SbSphereSheetProjector — sphere-sheet projector

CONTENTS

Inherits From
Synopsis
Description
Methods
File Format/defaults
See Also

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    
                    
SbVec3f              projectAndGetRotation(const SbVec2f &point, SbRotation &rot)    
virtual SbRotation    
                    
virtual SbRotation   getRotation(const SbVec3f &point1, const SbVec3f &point2)    
void    
                    
void                 setSphere(const SbSphere &sph)    
const SbSphere &    
                    
const SbSphere &     getSphere() const    
void    
                    
void                 setOrientToEye(SbBool orientToEye)    
SbBool    
                    
SbBool               isOrientToEye() const    
void    
                    
void                 setFront(SbBool isFront)    
SbBool    
                    
SbBool               isFront() const    
SbBool    
                    
SbBool               isPointInFront(const SbVec3f &point) const

Methods from class SbProjector:

    virtual SbVec3f    
                       
virtual SbVec3f         project(const SbVec2f &point)    
virtual void    
                       
virtual void            setViewVolume(const SbViewVolume &vol)    
const SbViewVolume &    
                       
const SbViewVolume &    getViewVolume() const    
virtual void    
                       
virtual void            setWorkingSpace(const SbMatrix &space)    
const SbMatrix &    
                       
const SbMatrix &        getWorkingSpace() const    
virtual SbProjector *    
                       
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

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