Patent ID: 6529194
Filing Date: 2003-03-04
Classification: G06T

Abstract:
A method of rendering an object in a virtual space, comprising:converting one of an absolute position of a light source in the virtual space and a relative position between the object and the light source to a position of a point in a shadow data set space comprised of points corresponding to preset light source positions and obtaining the position of the point in the shadow data set space as positional data of the light source; selecting from a plurality of data sets relating to a shadow corresponding to preset light source positions and calculated for all vertexes of said object and stored in advance for a specific element of said object a data set relating to shadow relating to the obtained positional data of the light source; interpolating from a plurality of data sets relating to the shadow based on the obtained positional data of the light source to generate an interpolated shadow data set when there are a plurality of data sets relating to the selected shadow; and using the interpolated shadow data set to draw the object in the virtual space.