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Public Member Functions | Protected Member Functions | Protected Attributes | List of all members
SbSphereProjector Class Referenceabstract
Projector Classes

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. More...

`#include <Inventor/projectors/SbSphereProjector.h>`

Inheritance diagram for SbSphereProjector:

## 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 SbSphere & | getSphere (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 SbViewVolume & | getViewVolume (void) const
const SbMatrix & | getWorkingSpace (void) const
virtual SbProjector * | copy (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
  SbCylinderProjector

## Constructor & Destructor Documentation

## ◆ SbSphereProjector() [1/2]

SbSphereProjector::SbSphereProjector | ( | const SbBool | orienttoeye | ) |

protected

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

## ◆ SbSphereProjector() [2/2]

SbSphereProjector::SbSphereProjector | ( | const SbSphere & | s,
|  | const SbBool | orienttoeye
| ) |  |

protected

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 | ) |

virtual

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
| ) |  |

protected

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

SbSphereProjector::intersectFront

protected

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

## ◆ sphere

SbSphereProjector::sphere

protected

Projection sphere.

## ◆ orientToEye

SbSphereProjector::orientToEye

protected

Which direction the spherical surface is oriented.

## ◆ needSetup

SbSphereProjector::needSetup

protected

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

## ◆ lastPoint

SbSphereProjector::lastPoint

protected

Stores the previously projected 3D point.

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

- SbSphereProjector.h
- SbSphereProjector.cpp

Copyright © 1998-2010 by Kongsberg Oil & Gas Technologies. All rights reserved.