Thanks, the code works beautifully.
One question left: can I change the alpha level for a particular vertex to be transparent? Right now the code draws the line in one big circle, connecting the end of the line (where the mouse is) with the beginning of the line. I need a way to turn off that last segment, so the line appears to have a beginning and end.
I was looking at the .alpha function, but it seems to work only on the object as a whole. Any suggestions?
Thanks again.
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