1.
SHOW UNDEFORM SHAPE
This function enables the user to toggle on/off the un-deformed
geometry of the model. The deformed parts are plotted in its original color
while the un-deformed model is plotted in white.
2.
SCALE FACTOR
This function is used to adjust the default scale factor of the
deformed part. The default is 1. It scales the plotted components to a
user-defined proportion and displays them on screen. For example, if the user plots
the deformed result, he/she could magnify the deformation by a factor of ten to
see small deformation not readily visible during animation.