Triangle is the VisionX Point Triangulation module. It contains programs for converting between a list of 3D points, a 3D vertex adjacency list, and a 3D polygon list. The polygon lists are created using Delauney Triangulation. This module also contains commands for mapping between different triangle based 3D structures. For convex objects it is posibe to perform a number of mapping operations based on a spherical or cylindirical model including mapping from one 3D model to another, mapping to a 2D projection and acquiring attributes from 3D images.