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SbSphereProjector Class Referenceabstract

The SbSphereProjector class is the abstract base class for mapping to spherical surfaces. More...

#include <Inventor/projectors/SbSphereProjector.h>

Inheritance diagram for SbSphereProjector:
SbProjector SbSphereSectionProjector SbSphereSheetProjector SbSpherePlaneProjector

Public Member Functions

SbVec3f projectAndGetRotation (const SbVec2f &point, SbRotation &rot)
virtual SbRotation getRotation (const SbVec3f &point1, const SbVec3f &point2)=0
void setSphere (const SbSphere &sph)
const SbSpheregetSphere (void) const
void setOrientToEye (const SbBool orienttoeye)
SbBool isOrientToEye (void) const
void setFront (const SbBool infront)
SbBool isFront (void) const
SbBool isPointInFront (const SbVec3f &point) const
virtual void setWorkingSpace (const SbMatrix &space)
- Public Member Functions inherited from SbProjector
virtual SbVec3f project (const SbVec2f &point)=0
virtual void setViewVolume (const SbViewVolume &vol)
const SbViewVolumegetViewVolume (void) const
const SbMatrixgetWorkingSpace (void) const
virtual SbProjectorcopy (void) const =0
virtual SbBool tryProject (const SbVec2f &point, const float epsilon, SbVec3f &result)

Protected Member Functions

 SbSphereProjector (const SbBool orienttoeye)
 SbSphereProjector (const SbSphere &s, const SbBool orienttoeye)
SbBool intersectSphereFront (const SbLine &l, SbVec3f &result)
- Protected Member Functions inherited from SbProjector
 SbProjector (void)
virtual ~SbProjector ()
SbLine getWorkingLine (const SbVec2f &point) const
float findVanishingDistance (void) const
SbBool verifyProjection (const SbVec3f &projpt) const

Protected Attributes

SbBool intersectFront
SbSphere sphere
SbBool orientToEye
SbBool needSetup
SbVec3f lastPoint
- Protected Attributes inherited from SbProjector
SbViewVolume viewVol
SbMatrix worldToWorking
SbMatrix workingToWorld

Detailed Description

The SbSphereProjector class is the abstract base class for mapping to spherical surfaces.

The sphere projectors map 2D points to various surface types based on spherical shapes.

See also

Constructor & Destructor Documentation

◆ SbSphereProjector() [1/2]

SbSphereProjector::SbSphereProjector ( const SbBool  orienttoeye)

Default constructor sets up a sphere at the origin with radius 1.

◆ SbSphereProjector() [2/2]

SbSphereProjector::SbSphereProjector ( const SbSphere s,
const SbBool  orienttoeye 

Constructor taking an explicit sphere projection definition.

Member Function Documentation

◆ projectAndGetRotation()

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

Project the 2D point to a 3D coordinate on the spherical surface, and find the rotation from the last projection to this one.

See also
project(), getRotation()

◆ getRotation()

SbRotation SbSphereProjector::getRotation ( const SbVec3f point1,
const SbVec3f point2 
pure virtual

Returns rotation on the projection surface which re-orients point1 to point2.

Implemented in SbSphereSectionProjector, SbSpherePlaneProjector, and SbSphereSheetProjector.

◆ setSphere()

void SbSphereProjector::setSphere ( const SbSphere sph)

Set sphere to project onto.

◆ getSphere()

const SbSphere & SbSphereProjector::getSphere ( void  ) const

Returns projection sphere.

◆ setOrientToEye()

void SbSphereProjector::setOrientToEye ( const SbBool  orienttoeye)

Sets whether or not the projection surface should be oriented towards the eye of the viewer. Default is TRUE.

◆ isOrientToEye()

SbBool SbSphereProjector::isOrientToEye ( void  ) const

Returns the state of the sphere orientation flag.

◆ setFront()

void SbSphereProjector::setFront ( const SbBool  infront)

Set whether to intersect with the outside of the sphere (infront equal to TRUE), or the inside.

◆ isFront()

SbBool SbSphereProjector::isFront ( void  ) const

Returns value of the flag which decides whether to intersect with the outside or inside of the sphere.

◆ isPointInFront()

SbBool SbSphereProjector::isPointInFront ( const SbVec3f point) const

Check if point is on the frontside or the backside of the cylinder.

◆ setWorkingSpace()

void SbSphereProjector::setWorkingSpace ( const SbMatrix space)

Sets the matrix used for converting from the projector's coordinate system to the world coordinate system.

Reimplemented from SbProjector.

◆ intersectSphereFront()

SbBool SbSphereProjector::intersectSphereFront ( const SbLine l,
SbVec3f result 

Intersect line with the SbSphereProjector::sphere and place the intersection point (if any) in result. Considers setFront() settings.

Returns TRUE if line actually hits the sphere, FALSE if it doesn't intersect with it.

Member Data Documentation

◆ intersectFront


Flag which says whether or not we should map to the outside or inside of the sphere surface.

◆ sphere


Projection sphere.

◆ orientToEye


Which direction the spherical surface is oriented.

◆ needSetup


Set to TRUE whenever the projection surface needs to be recalculated according to the setting of the SbSphereProjector::orientToEye flag.

◆ lastPoint


Stores the previously projected 3D point.

The documentation for this class was generated from the following files: