Subject:
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Re: Alternate Type 5 line algorithm and other BFC questions...
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Newsgroups:
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lugnet.cad.dev
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Date:
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Fri, 19 Apr 2002 22:53:07 GMT
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Viewed:
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768 times
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In lugnet.cad.dev, Kyle McDonald writes:
> [snip]
> Actually this brings me to a new question...
> Previously I posted this pseudo code for the BFC logic, I didn't get
> any "Hey that's wrong!"'s so Im guessing it's correct. Assuming it is,
> can anyone give me an example of pseudo code for the isMirrorMatrix()
> function? My Linear Algebra/Matrix Math is a little fuzzy.
Just check to see if the determinant of the matrix is negative. If it is,
the matrix involves mirroring.
--Travis Cobbs (tcobbs@REMOVE.halibut.com)
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