Fixing LOD gaps, T-junctions

Posted by Jaka Jancar on Stack Overflow See other posts from Stack Overflow or by Jaka Jancar
Published on 2010-04-14T09:54:51Z Indexed on 2010/04/14 10:23 UTC
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opengl

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3d

I'm creating a heightmap renderer. One of the examples for solving gaps when doing LOD I found is this:

(from Game Programming Gems 2 - Greg Snook - Simplified Terrain using Interlocking Tiles)

Wouldn't this still produce a gap, if the three vertices encircled with red were not co-linear? Shouldn't the middle triangle be split into two, as I marked with the orange line?

Am I misunderstanding the problem, or is there a mistake in the example?

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