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Subject:	Re: Detemining Polygon Winding (Was: New Plugin for LDDesignPad)
Newsgroups:	lugnet.cad.dev
Date:	Thu, 8 Aug 2002 22:48:03 GMT
Viewed:	888 times

In lugnet.cad.dev, Steve Bliss writes: > Also, once you know the direction for one (or more) polygons, any polygons > that share an edge can have their direction determined. If polygon #1 has > wrapping ABCD, and polygon #2 has vertices ABEF, then polygon #2's wrapping > will involve a B->A transition. > > Steve Or I could say that the first polygon in a part must be wound correctly and then proceed from there.

Message has 1 Reply:

		Re: Detemining Polygon Winding (Was: New Plugin for LDDesignPad)
(...) Correcting the winding shouldn't be too bad -- if the L3 code is available (ie, look in the ldglite source code) -- check how Lars detects bad winding, and how he figured the (more) correct winding. Steve (22 years ago, 9-Aug-02, to lugnet.cad.dev)

Message is in Reply To:

		Re: Detemining Polygon Winding (Was: New Plugin for LDDesignPad)
(...) Also, once you know the direction for one (or more) polygons, any polygons that share an edge can have their direction determined. If polygon #1 has wrapping ABCD, and polygon #2 has vertices ABEF, then polygon #2's wrapping will involve a (...) (22 years ago, 8-Aug-02, to lugnet.cad.dev)

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