Glossary for Geospatial Science

ray-casting:  The algorithm used for drawing oblique perspective views of 3D raster objects.  The ray-casting algorithm uses the surface layer to draws 3D images more quickly than the original algorithm used in 3D Group and 3D Simulation.  However, users are given an option to turn off the ray-casting algorithm because this algorithm does not handle well raster objects that are larger than the surface layer.