efficient facet

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Hey guys !

I'm building a procedural building tool which allows artists to create highly detailed parts of a building and these models are distributed to create any size structure imaginable.

I'm running into a bit of a performance issue, and not in the way i expected. The normals of the objects are wrong, this is usually fixed by using the facet SOP and “make unique points” and computing the normals. However, The performance hit I am taking is immense. The finished system went from real time functionality to a 3 second cook time between doing anything. Now perhaps this is unavoidable. But I was wondering if anyone has found a more efficient way of applying new normal information?
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Maybe you can narrow down the operation where the normals are getting messed up and alter that? Or isolate what primitives have flipped normals and then use a reverse SOP to fix it that way?
Houdini Models [learning3dfromscratch.blogspot.com]
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Another idea is just try to do those operations as soon as possible.
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