SbLineProjector(3IV)

NAME
     SbLineProjector (SbLineProj) - line projector

INHERITS FROM
     SbProjector > SbLineProjector

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

     typedef SbLineProjector  SbLineProj

          Functions from class SbLineProjector:

     SbLineProjector *   SbLineProjCreate()
     void                SbLineProjDelete(SbLineProj *this)
     void                SbLineProjSetLine(SbLineProj *this, const SbLine
                              *line)
     const SbLine *      SbLineProjGetLine(const SbLineProj *this)
     SbVec3f             SbLineProjGetVecMouse2(SbLineProj *this, const
                              SbVec2f *mousePosition1, const SbVec2f
                              *mousePosition2)
     SbVec3f             SbLineProjGetVecMouse1(SbLineProj *this, const
                              SbVec2f *mousePosition)
     void                SbLineProjSetStartPosMouse(SbLineProj *this, const
                              SbVec2f *mousePosition)
     void                SbLineProjSetStartPosPt(SbLineProj *this, const
                              SbVec3f *point)

          Functions from class SbProjector:

     SbVec3f               SbLineProjProject(SbLineProj *this, const SbVec2f
                                *point)
     void                  SbLineProjSetViewVol(SbLineProj *this, const
                                SbViewVolume *vol)
     const SbViewVolume *  SbLineProjGetViewVol(const SbLineProj *this)
     void                  SbLineProjSetWorkSpace(SbLineProj *this, const
                                SbMatrix *space)
     const SbMatrix *      SbLineProjGetWorkSpace(const SbLineProj *this)
     SbProjector *         SbLineProjCopy(const SbLineProj *this)


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

FUNCTIONS
     SbLineProjector *   SbLineProjCreate()
     void                SbLineProjDelete(SbLineProj *this)
          Constructor and destructor. The default line passes through the
          origin and is aligned with the Y axis.
     void                SbLineProjSetLine(SbLineProj *this, const SbLine
                              *line)
     const SbLine *      SbLineProjGetLine(const SbLineProj *this)
          Set and get the line on which to project 2D points.

     SbVec3f             SbLineProjGetVecMouse2(SbLineProj *this, const
                              SbVec2f *mousePosition1, const SbVec2f
                              *mousePosition2)
          Get a vector on this line given two normalized mouse points.

     SbVec3f             SbLineProjGetVecMouse1(SbLineProj *this, const
                              SbVec2f *mousePosition)
          Get a vector given the current mouse point. Uses the last point on
          this projector from the previous call to  SbLineProjGetVecMouse1(),
          SbLineProjSetStartPosMouse(), or SbLineProjSetStartPosPt(). 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                SbLineProjSetStartPosMouse(SbLineProj *this, const
                              SbVec2f *mousePosition)
          Set the initial position from a mouse position.

     void                SbLineProjSetStartPosPt(SbLineProj *this, 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