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Radiosity Substructuring

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Hi, sorry i have another question concerning radiosity. I want to add adaptive substructuring. I have read many articles about this, and i know that, if there are high radiosity gradients over a patch, then i should subdivide it. But they dont describe how to determine this. I thought about taking the form factor from the source patch to two or even all four corner points from the destionation patch and then measure the differences between these. but this seems to be inefficient. Which would be the "standard way" to do it? thanks Gammastrahler

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This is how I would do it:

Given the input values to a patch, you take the average of them. If a certain number (constant) of inputs is above or below that average by a certain constant, tesselate and restructure these sub-patches (I think you just have to sort the original inputs to see which one goes where in the sub-patches list). I dunno if it would work, but it looks like to be what you were wanting. Hope this helps,

JVFF

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