Accretion Simulation with SideFX Houdini

This video demonstrates using Houdini grains to simulate accretion. The grain source is an array of spheres positioned over jittered points created from a disc shaped volume. Since the grains clump together and are simultaneously drawn towards a central point, they give rise to a nice accretion effect.

I've detailed the work involved in a blog post: http://flexmonkey.blogspot.co.uk/2016/10/simulating-accretion-with-houdinis.html

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