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							      SbProjector(3IV)

NAME
     SbProjector (SbProj) - base class for representing projectors

INHERITS FROM
     SbProjector

SYNOPSIS
     #include <Inventor_c/projectors/SbProjector.h>

     typedef SbProjector  SbProj

	  Functions from class SbProjector:

     SbVec3f		   SbProjProject(SbProj *this, const SbVec2f *point)
     void		   SbProjSetViewVol(SbProj *this, const SbViewVolume
				*vol)
     const SbViewVolume *  SbProjGetViewVol(const SbProj *this)
     void		   SbProjSetWorkSpace(SbProj *this, const SbMatrix
				*space)
     const SbMatrix *	   SbProjGetWorkSpace(const SbProj *this)
     SbProjector *	   SbProjCopy(const SbProj *this)

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.

FUNCTIONS
     SbVec3f		   SbProjProject(SbProj *this, 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.

     void		   SbProjSetViewVol(SbProj *this, const SbViewVolume
				*vol)
     const SbViewVolume *  SbProjGetViewVol(const SbProj *this)
	  Set and get the view volume to use for the projection. This is
	  typically supplied from SoCamGetViewVol().

     void		   SbProjSetWorkSpace(SbProj *this, const SbMatrix
				*space)
     const SbMatrix *	   SbProjGetWorkSpace(const SbProj *this)
	  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.

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SbProjector(3IV)

     SbProjector *	   SbProjCopy(const SbProj *this)
	  Creates and returns an exact copy of the projector.

FILE FORMAT/DEFAULTS
     Projector {
     }

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

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