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Re: T-Junctions re-visited
March 18, 2013 11:27AM
Hi Travis,

I think your "semi-flat" category is a sub-set of my "smooth" category...the key here is that it looks flat until you look at the neighbors, right?

My smooth category basically means "participates in smoothing after flattening". To this end, it's not really necessary for a program to pre-smooth the part; the part is going into the smoothing process later with neighbors considered, and the smoothing algorithms I've seen tossed around don't benefit from pre-smoothing some vertices.

So while semi-flat may be semantically different (e.g. "participates in smoothing after flattening, but flat on its own") I'm not sure it's a huge win to define it. There's certainly no harm in defining it if we want to be more specific.

But I definitely agree that rect3 is _not_ a candidate for "FLAT" tagging even though it is, ironically, flat. Because it is missing an edge line we must be pessimistic and assume that another part will join, of which case 33243.dat is a perfect example.

By comparison, rect.dat could be tagged flat. Because the quad is bounded on four sides by solid lines, we can safely assume that it was meant to be flat shaded.

Cheers
Ben
SubjectAuthorViewsPosted
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Re: T-Junctions re-visited Michael Heidemann386March 13, 2013 09:27AM
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Re: T-Junctions re-visited Magnus Forsberg344March 17, 2013 09:15AM
Re: T-Junctions re-visited Travis Cobbs401March 17, 2013 10:09PM
Re: T-Junctions re-visited Ben Supnik367March 18, 2013 07:30AM
Re: T-Junctions re-visited Travis Cobbs361March 18, 2013 10:57AM
Re: T-Junctions re-visited Ben Supnik379March 18, 2013 11:27AM
Re: T-Junctions re-visited Travis Cobbs357March 18, 2013 12:23PM
Re: T-Junctions re-visited Ben Supnik406March 18, 2013 01:41PM
Re: T-Junctions re-visited Roland Melkert424March 18, 2013 02:51PM
Re: T-Junctions re-visited Travis Cobbs395March 18, 2013 02:59PM
Re: T-Junctions re-visited Roland Melkert458March 18, 2013 03:41PM
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Re: T-Junctions re-visited Travis Cobbs404March 19, 2013 10:13PM
Re: T-Junctions re-visited Tim Gould410March 20, 2013 03:56AM
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Re: T-Junctions re-visited Ben Supnik369March 20, 2013 10:23AM
Re: T-Junctions re-visited Travis Cobbs403March 20, 2013 10:29AM
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Re: T-Junctions re-visited Travis Cobbs439March 14, 2013 03:23PM
Re: T-Junctions re-visited Roland Melkert449March 14, 2013 03:34PM
Re: T-Junctions re-visited Tim Gould439March 14, 2013 03:41PM
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Re: T-Junctions re-visited Tim Gould370March 13, 2013 07:43PM
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Re: T-Junctions re-visited Tim Gould368March 13, 2013 08:18PM
Re: T-Junctions re-visited Ben Supnik441March 14, 2013 08:15PM
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Re: T-Junctions re-visited Travis Cobbs398March 15, 2013 12:27PM
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Re: T-Junctions re-visited Travis Cobbs404March 16, 2013 11:29PM
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