Parm Cross Diagrams

These are diagrams demonstrating control of the four symmetry parameters for cross figures. In order to draw crosses on a frame while independently controlling more than the usual two parameters available to the "on_frame" function, I developed a new function "fn_frame" which allows for an arbitrary set of parameters to be passed to the object drawing function, including which function is to be chosen for each frame point. The "fn_frame_tests" captioned diagram demonstrates this new function. I also added the ability to resample either by object segment or by the entire object drawn on the frame point.