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Does it matter which way surfaces face, i.e. if a polygon is defined clockwise or counter-clockwise?

April 26, 2017clockwise counter-clockwise defined Face polygon surfaces

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Does it matter which way surfaces face, i.e. if a polygon is defined clockwise or counter-clockwise?

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For opaque surfaces, no, it does not matter. The surface will have the same material on both sides. For transparent/transluscent/clear surfaces and light sources, yes, it does matter.