BORDER LINE DISPLAY METHOD FOR POLYGON MODEL IN THREE- DIMENSIONAL CG VIDEO GAME

摘要

PROBLEM TO BE SOLVED: To easily display a polygon model with a border line. SOLUTION: This display method is as follows. Each polygon constituting the polygon model 20 that is intended to display a border line thereof is moved to the normal direction by a desired distance, each the polygon is enlarged such that borders of adjacent polygons are connected, to generate an enlarged polygon model. An enlarged back polygon model composed of back polygons having apexes jointly with the respective polygons of the enlarged polygon model and each having an opposite normal direction is generated. A color of the enlarged back polygon model is changed into a required border line color, and a border polygon model 23 is generated. The polygon model 20 is composed such that the polygon model 20 is superimposed within the border polygon model 23, and is displayed on a display 1.