RENDERING A TWO-DEMENSIONAL IMAGE

A two-dimensional image is rendered from data for a three-dimensional model by detecting silhouette features on the three-dimensional model based on the data, and rendering polygons and the silhouette features to produce the two-dimensional image. The silhouette features are detected by detecting edges of polygons that make up the three-dimensional model, storing coordinates of detected polygon edges in an edge list, determining which of the detected polygon edges are silhouette edges, and marking, in the edge list, detected polygon edges that are silhouette edges.