Patent ID: 7196703

Claim:
A method for generating vertices of a primitive extension, the primitive extension defining a collection of connected primitives including an originating primitive, comprising: providing vertices of the originating primitive; retrieving parameters associated with the primitive extension based on its primitive extension type, the parameters including a width (w), a step size (s) and an anchor width (a); and generating vertices of the primitive extension using the parameters by: (i) setting the vertices of the originating primitive as the first w vertices of the primitive extension, the vertices of the originating primitive including a number of anchor vertices of the primitive extension, the number of anchor vertices of the primitive extension being equal to the anchor width (a); and (ii) generating one or more additional vertices for each connected primitive other than the originating primitive, the number of vertices generated for said each connected primitive being equal to the step size (s), wherein the primitive extension type includes a triangle fan type, a quadrilateral strip type, and a cube strip type.