> Derek:
> 
> Don't need one. Use the QuickDraw toolbox commands to see if there is a
> common area between the rectangle and your line. You do this by: 1) Opening
> a region; 2) Drawing you line: 3) Closing the region; 4) Using Boolean = FN
> RECTINRGN (rect&, rgn&). See page 299 of the FB Handbook.
> 
> tedd

Tedd:

I was hoping there was a mathematical approach to the problem as I have to
do it fast for 'phasers' in a game and fooling with regions every frame
may be kinda slow.

Somebody pointed me in a good direction and hopefully I can work out the
math.  I'll post to the webring if I get it.

Thanks.

-Derek
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www2.hawaii.edu/~dereksmi
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