VFX Essentials - Volume Gradient Advection - Houdini Tutorial
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In this video we use the volume analysis SOP to compute a gradient field from a simulated smoke. This gradient volume can be used to "squeeze" the advected particles resulting in an interesting look.
0:00 - 0:05 : Intro
0:00 - 4:15 : Theory
4:15 - 6:48 : Application