Abstract: A method for forming an image of an object on a display of a computer includes representing at least a portion of the object with a first strip of polygons that is described by a first set of points of a first coordinate space. One or more polygons of the first strip that will be invisible in the image are selected, and these polygons are culled from the first strip to form a second strip of polygons. The second strip of polygons is described by a second set of points of the first coordinate space. The culling is performed before the points of the second set are transformed into another coordinate space that is associated with the image.