one vertex has two normals?

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# 1 24-09-2004 , 02:56 PM

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Location: Gothenburg, Sweden

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This is drivning me nuts! How can ONE vertex, yes it is only one I'm 100% sure, have TWO normals? Something fishy around here... Because of that I get a sharp edge when smoothing. Any idéas?

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# 2 24-09-2004 , 03:27 PM

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Join Date: Jun 2003

Location: stuck in the 90's boston, USA

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i don't think it has 2 normals.
you may have non-manifold faces or laminate faces,

u can go to the ply menu and do a clean up operation
or try merging vertices with a low threshold. like .002 or .001

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# 3 24-09-2004 , 03:59 PM

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I've already merged with 0.001, and the lines that are showing ARE the vertex normals, so as you see it has TWO?

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# 4 24-09-2004 , 09:39 PM

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nevermind, I deleted the faces and remade it. Very strange though.

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# 5 24-09-2004 , 10:03 PM

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Each vertex can have one normal per face that it is connected to. Normals determine how the shading at a particular vertex behaves. A vertex with one normal is smooth on all connected faces. When you start splitting the normals on the vertex, you get hard edges. Just look at the vertex normals on a cube and on a cylinder, and you will how that works.

Danny Ngan
Animator | Amaze Entertainment
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