SbLineProjector(3IV)

NAME
     SbLineProjector - line projector

INHERITS FROM
     SbProjector > SbLineProjector

SYNOPSIS
     #include <Inventor/projectors/SbLineProjector.h>

          Methods from class SbLineProjector:

                         SbLineProjector()
                         ~SbLineProjector()
     void                setLine(const SbLine &line)
     const SbLine &      getLine() const
     virtual SbVec3f     getVector(const SbVec2f &mousePosition1, const
                              SbVec2f &mousePosition2)
     virtual SbVec3f     getVector(const SbVec2f &mousePosition)
     void                setStartPosition(const SbVec2f &mousePosition)
     void                setStartPosition(const SbVec3f &point)

          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
     SbLineProjector projects a 2D point, typically the location of the
     cursor, onto a 3D line.

METHODS
                         SbLineProjector()
                         ~SbLineProjector()
          Constructor and destructor. The default line passes through the
          origin and is aligned with the Y axis.

     void                setLine(const SbLine &line)
     const SbLine &      getLine() const
          Set and get the line on which to project 2D points.

     virtual SbVec3f     getVector(const SbVec2f &mousePosition1, const
                              SbVec2f &mousePosition2)
          Get a vector on this line given two normalized mouse points.

     virtual SbVec3f     getVector(const SbVec2f &mousePosition)
          Get a vector given the current mouse point. Uses the last point on
          this projector from the previous call to getVector() or
          setStartPostion().  Do not use this if the working space transform
          is changing since the new point will be in a different space than
          the old one.

     void                setStartPosition(const SbVec2f &mousePosition)
          Set the initial position from a mouse position.

     void                setStartPosition(const SbVec3f &point)
          Set the initial position from a point on the projector.


FILE FORMAT/DEFAULTS
     LineProjector {
     }

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