zdrawLine
drawing back-end for objects derived from the _zLine class
Methods defined in zdrawLine
send current position of line frame's axis and position based on the line's current
defining Hermitian matrix
set position of line's lab, if any
for consistency in iterating Element's rendering objects, all elements
rendering information is in a list called self.rend. In the case of zLines,
it is a single element list containing a cvisual curve object
export the scene's lines to PovRay SDL
See
the source
for more information.