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Away3D 3.6 Cookbook by Michael Ivanov

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Optimizing geometry by welding vertices

Good modeling practices are essential for optimization. The model quality depends primarily on the proficiency of a modeler. However, you may find yourself in many situations using models that were purchased from third party sources or even models created by a professional, but without careful inspection of errors. You can get additional optimization of your models checking them for duplicated vertices and UVs, which are very widespread modeling flaws. Removal of extra vertices may help improve the performance (especially if there are lots of these) because each vertex is involved in matrix transformation calculations, which are memory intensive by default, but an even more intensive process is the drawing ...

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