An Algorithm for Fast 3D Picking and Snapping using a 3D Input Device and 3D Cursor.
André Stork · 1998
Picking and snapping are essential tasks in any interactive graphics application. In the field of VR-like CAD systems, conventional ray-picking is still widely used. The 3D input devices adopted by these systems allow for direct 3D interaction, thus to completely support 3D interaction, fast picking and snappig directly in 3D is required by those systems.