trusty (3) SbProjector.3iv.gz

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)()