Quick Wind Tunnel

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Usually you’d find pyro setups behind all kinds of explosions, fires and sometimes fireworks, but how about something more calm? Something like a wind tunnel used to evaluate the aerodynamic properties of cars, trains and planes? (Please do not use this setup to evaluate any aerodynamic properties, it’s a visual setup, not necessarily a scientifically accurate one.)
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Polyfolding – Part 1

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This is the first part of a two part tutorial. Part two will be available soon.

Polyfolding is an interesting effect where you split up an object to individual bands and make them curl up. It can be used to disintegrate an object or make it appear from nothing. To achieve the curling behaviour some matrix math is needed. All primitives are treated like individual objects, with their own distinct transfomation matrix attached. Then, they can be put into a hierarchical relationship to make the successive curl happen.
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Quicktip: Double Pendulum In Vellum

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Another one of those physics/math/CG tropes is the double pendulum: Take a standard pendulum (one arm that can rotate around one or more axis) and attach another pundulum to its end. The fascination for this contraption comes from the fact that it behaves extremely different depending on its initial condition.
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