[Projectors]

Base class for representing projectors. More...

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

Inheritance diagram for SbProjector:

## Public Member Functions | |

virtual | ~SbProjector () |

virtual SbVec3f | project (const SbVec2f &point)=0 |

virtual SbVec3f | intersect (const SbLine &line)=0 |

virtual void | setViewVolume (const SbViewVolume &vol) |

const SbViewVolume & | getViewVolume () const |

virtual void | setWorkingSpace (const SbMatrix &space) |

const SbMatrix & | getWorkingSpace () const |

virtual SbProjector * | copy () const =0 |

Base class for representing projectors.

SbProjector is the base class for all projector classes. Projector classes are used to convert from window space (usually based on the mouse location) into a 3D point. This is done by projecting the window coordinate as a 3D vector onto a geometric function in 3-space, and computing the intersection point. Most projectors actually compute incremental changes and produce incremental rotations and translation as needed. Projectors are used to write 3D interactive manipulators and viewers.

SbCylinderProjector, SbCylinderPlaneProjector, SbCylinderSectionProjector, SbCylinderSheetProjector, SbLineProjector, SbPlaneProjector, SbSpherePlaneProjector, SbSphereProjector, SbSphereSectionProjector, SbSphereSheetProjector

virtual SbProjector::~SbProjector | ( | ) | ` [inline, virtual]` |

Destructor.

virtual SbProjector* SbProjector::copy | ( | ) | const` [pure virtual]` |

Creates and returns an exact copy of the projector.

Implemented in SbCylinderPlaneProjector, SbCylinderSectionProjector, SbCylinderSheetProjector, SbLineProjector, SbPlaneProjector, SbSpherePlaneProjector, SbSphereSectionProjector, and SbSphereSheetProjector.

const SbViewVolume& SbProjector::getViewVolume | ( | ) | const` [inline]` |

Get the view volume to use for the projection.

const SbMatrix& SbProjector::getWorkingSpace | ( | ) | const` [inline]` |

Get the transform space to work in.

Applies the projector using the given line in world coordinates, returning the point in three dimensions that it projects to.

Note: For the projectors that support "orientToEye", setting this flag to TRUE causes the projector to orient to the line when the intersect method is called. New for v3.0.

Implemented in SbCylinderPlaneProjector, SbCylinderProjector, SbCylinderSectionProjector, SbCylinderSheetProjector, SbLineProjector, SbPlaneProjector, SbSpherePlaneProjector, SbSphereProjector, SbSphereSectionProjector, and SbSphereSheetProjector.

Apply the projector using the given point, returning the point in three dimensions that it projects to.

The point should be normalized (lie in the range [0.0,1.0]), with (0,0) at the lower-left.

Implemented in SbCylinderPlaneProjector, SbCylinderProjector, SbCylinderSectionProjector, SbCylinderSheetProjector, SbLineProjector, SbPlaneProjector, SbSpherePlaneProjector, SbSphereProjector, SbSphereSectionProjector, and SbSphereSheetProjector.

virtual void SbProjector::setViewVolume | ( | const SbViewVolume & | vol |
) | ` [virtual]` |

Set the view volume to use for the projection.

This is typically supplied from SoCamera::getViewVolume().

virtual void SbProjector::setWorkingSpace | ( | const SbMatrix & | space |
) | ` [virtual]` |

Set the transform space to work in.

This matrix should transform working space coordinates into world space. The default matrix is identity, meaning that the default working space is world space.

Reimplemented in SbCylinderProjector, and SbSphereProjector.

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

- Inventor/projectors/SbProjector.h

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