Ray Tracing Example Input files,database format The view tree-the concept of visibility Field Computation Example of output file V.Degli-Esposti,"Urban propagation modelling and ray tracing" 12 V. Degli-Esposti, “Urban propagation modelling and ray tracing” 12 Ray Tracing Example • Input files, database format • The view tree - the concept of visibility • Field Computation • Example of output file