|The purpose of the model is to show how homogeneous coordinates work to simplify transformations. The model includes functions to translate, rotate and scale 2D objects. The user is challenged to write a procedure function to mirror an object about a mirror line. By using TK's external functions for matrix operations, two of the procedure functions have been greatly simplified. The old statements are retained in the updated functions for comparison purposes, but they are inactive.
Bob Ferguson, 12 April 07