[squeak-dev] WarpBlt geometry puzzle
Stéphane Rollandin
lecteur at zogotounga.net
Tue Feb 16 12:30:40 UTC 2021
Hello all,
I can't figure this out:
Given an instance of WarpBlt, what is the formula giving the destination
of a specific original point?
I only need one point (for the record, the offset of a Form to be
rotated and magnified). The code in WarpBlt works incrementaly by
running over all original points. At the moment I can get the result by
hacking into that loop, but it is slow and ugly. There has to be a
direct formula, but I can't find it. Any idea?
Stef
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