Rules?Convert Polys to SubDivision

[wedge]

number of polys... you should be able to SubD an unsmoothed proxy, but if you try to SubD an already smoothed base object, you will likely run into trouble.

[theKwyjibo]

2 major problems with turning a poly object into a sub-d object. 1 is the number of polys both in input and in output (I know this sounds strange given the nature of maya's sub-d but apparently it is indeed important)
2 input geomotry MUST be manifold. (read the docs on what this means)

To help fix this first run a clean geometry by opening the options dialog and click the nonmanifold radio box. This should fix any manifold issues.

Second when you run a poly-Subd conversion open the tool dialog and up the number of polys (the default is 5000) I normally set it to 20,000 this generally gets even a relatively complex object into subd.

To help later on with rendering go to the attribute editor under the tessolation options and tweak the tesselation. I often set it to Adaptive and 2 with the default being 4. This will help if there are render errors as I have had occasions where the renderer belches out an error upon attempting to render complex sub-d objects because of tesselation. (I am learning to despise the Maya renderer because of crashes with high geometry scenes)

Hope this helps,
-Russ

[Julez4001]

AHHHH tHANKS GUYS. jUST THE TYPE OF HELP NEEDED.

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