NAME

       SbProjector — base class for representing projectors

INHERITS FROM

       SbProjector

SYNOPSIS

       #include <Inventor/projectors/SbProjector.h>

          Methods from class SbProjector:

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

DESCRIPTION

       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.

METHODS

     virtual SbVec3f        project(const SbVec2f &point)
          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.

     virtual void           setViewVolume(const SbViewVolume &vol)
     const SbViewVolume &   getViewVolume() const
          Set and get the view volume to use for the projection. This is typically supplied  from
          SoCamera::getViewVolume().

     virtual void           setWorkingSpace(const SbMatrix &space)
     const SbMatrix &       getWorkingSpace() const
          Set  and get 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.

     virtual SbProjector *  copy() const
          Creates and returns an exact copy of the projector.

SEE ALSO

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

                                                                               SbProjector(3IV)()