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Re: Question about edges
March 22, 2013 04:48PM
Hi Tim,

Quote
Tim Gould
The one notable exception is if a part used a rotation on something really long to match with another detail. Which is unreliable design and best caught at the design/review stage.

That's the one thing that's strange. I get failures to lock-upon the 6x6 dishes if my TOL is < about 0.05. For example, 0.01 will lock up some but not all of the dishes.

And to make it worse, some pattern parts have markings intentionally authored with triangles < 0.05. (My guess is that these triangles were induced to remove T junctions.)

Quote

You could get rid of the problem by iterating until no matches are found. But that seems like overkill to me and is possibly more likely to result in false joins.

Right - I thought about that, but if the choice is between two somewhat arbitrary outputs for a wrong input, I might as well pick the one that requires less processing time. :-) I'm screening now to see which parts have 'close' outputs despite not having tiny input triangles. One technic part that failed this test had some authoring problems.

My hope was that, with no points closer than TOL after running, I could write the T-splitting with no concern for numeric precision (because TOL would be significantly bigger than the real floating point limits I would face).

But it may instead be the case that where the points are close together, the input was funky and the output can be funky too.

Cheers
Ben
SubjectAuthorViewsPosted
Question about edges Roland Melkert488March 08, 2013 12:41PM
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Re: Question about edges Ben Supnik226March 10, 2013 07:31PM
Re: Question about edges Travis Cobbs212March 10, 2013 10:19PM
Re: Question about edges Ben Supnik202March 10, 2013 11:20PM
Re: Question about edges Tim Gould269March 10, 2013 11:40PM
Re: Question about edges Ben Supnik218March 11, 2013 11:52AM
Re: Question about edges Roland Melkert214March 11, 2013 01:31PM
Re: Question about edges Tim Gould217March 11, 2013 01:58PM
Re: Question about edges Roland Melkert208March 11, 2013 04:48PM
Re: Question about edges Tim Gould232March 11, 2013 04:57PM
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Re: Question about edges Ben Supnik251March 22, 2013 03:33PM
Re: Question about edges Tim Gould236March 22, 2013 03:44PM
Re: Question about edges Ben Supnik234March 22, 2013 04:48PM
Re: Question about edges Philippe Hurbain284March 23, 2013 01:49AM
Re: Question about edges Travis Cobbs208March 11, 2013 11:20AM
Re: Question about edges Roland Melkert225March 11, 2013 01:50PM
Re: Question about edges Roland Melkert189March 12, 2013 11:15AM
Re: Question about edges Ben Supnik206March 12, 2013 11:24AM
Re: Question about edges Roland Melkert194March 12, 2013 11:37AM
Re: Question about edges Travis Cobbs195March 09, 2013 10:57PM



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