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Creating Ligh Maps - Please help :)

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Hi Guys, I'm trying to get my head around the actual process of creating lightmaps for my scene. I'm struggling with actually creating them (not rendering them). So for example, say I have a single triangle in my scene and a point light at a given distance. How do I get the 3D positions at a specified UV position on the triangle? I am assuming I need to project the UV's back onto the surface of the triangle - but how??? Any help would be really appreciated, Kind Regards, Chris Evans

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youre best seacrhing on the internet for creating lightmaps info, its quite detailed + quite time consuming. youve gotta decide also what lighitng method to use eg radiosity, sinple raytraced etc

Quote:
How do I get the 3D positions at a specified UV position on the triangle?

use barycentric coordinates

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