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Subject:	Re: non-lego rendering using various LDraw tools
Newsgroups:	lugnet.cad.dat.ideas
Date:	Thu, 23 Sep 2004 23:13:41 GMT
Viewed:	4610 times

In lugnet.cad.dat.ideas, Don Heyse wrote:

Err, reverse course. I peeked at the autotrace source and it says in pxl-outline.c “Outside outlines are traced counterclockwise”. So if you want to make things easier for me, do it that way. ;^)

OK. My edges already were counterclockwise. :) Umm, for inside outlines (inlines?) to be clockwise, that’s ‘clockwise’ from a global view, right? If so, then my inlines are already clockwise. But I don’t know which ones are inlines, and which one are outlines. :O

Steve

Message has 1 Reply:

		Re: non-lego rendering using various LDraw tools
(...) You lost me there. How could you not know which is which if they already go in the opposite direction? Just take a cross product at the topmost point. If it's negative, then it's clockwise and thus a hole. Don (20 years ago, 23-Sep-04, to lugnet.cad.dat.ideas, FTX)

Message is in Reply To:

		Re: non-lego rendering using various LDraw tools
(...) Err, reverse course. I peeked at the autotrace source and it says in pxl-outline.c "Outside outlines are traced counterclockwise". So if you want to make things easier for me, do it that way. ;^) (...) (20 years ago, 23-Sep-04, to lugnet.cad.dat.ideas, FTX)

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