Cutaways: Render Layers and Geometry Masks


This clip demonstrates the inner workings of a fuel injector. The model was created as a cutaway and rendered in separate layers so that the upper half of the shell could be dissolved using animated alpha masks in the compositing stage. The fuel spray was created using eight particle emitters that are rendered with a geometry mask so that any “stray” particles are hidden and all appear to be coming precisely from the holes at the tip of the fuel injector.


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