Patent ID: 6437782
Filing Date: 2002-08-20
Classification: G06T

Abstract:
A method for generating a shadow for a three-dimensional model illuminated by a light source, said method comprising:(a) finding a projected shadow model on a shadow plane; (b) finding a convex-shaped bounding volume for the model; (c) finding a projected bounding area on the shadow plane based on the convex-shaped bounding volume; (d) finding a screen extent that completely encompasses the projected bounding area; (e) preparing a texture map; (i) rendering the projected shadow model onto the texture map creating a projected shadow texture map; (g) preparing the projected bounding area; (h) rendering the projected shadow texture map in the projected bounding area creating a shadow texture mapped bounding area; (i) rendering the shadow texture mapped bounding area into a scene; and (j) displaying the scene with the rendered shadow texture mapped bounding area.