🚀 go-pugleaf

Hello.
Does anyone know whether or not, and how, it's possible to create a
kind of interactive graphic that involves clicking on specified
locations in the graphic and updating parts of the graphic based on
those events?
I know it's possible to update rectangular areas of the graphic, but
is it also possible to use a kind of image map to specify non-
rectangular areas of the graphic that are supposed to be modified?
So what I want is to update areas in the graphic that are not shaped
in rectangular form, based on clicking in certain locations, while
preserving the graphic in the area around these non-rectangular
shapes.
Imagine a tetrahedron for instance where edges are arrows (represented
by color transitions) and being able to click in certain locations in
the graphic in order to reverse the direction of the individual
arrows.
Here is a povray-generated graphic for example that I might like to
use:
http://www.ibbu.nl/~nsprakel/tetra4b.jpg

I'm using the version of imageready that comes with CS2, but if it's
not possible with that version, I'd also be interested in hearing
whether or not it's possible with the version of imageready that comes
with CS3.

Kind regards and thanks in advance for any suggestions, Niek