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Last year, Senior FX TD at DNEG Moisè Asta stumbled upon a paper from Wētā FX presented at Siggraph 2020, which focused on simulating Lagrangian waves on a water surface. The approach aimed to use the physical properties of these waves to enhance the detail of a FLIP simulation in post-processing without increasing its base resolution.
Inspired by this work, he decided to dust off his old textbooks on seismic and mathematical analysis, approaching the problem from a civil engineering perspective. Moisè then set out to implement the method in Houdini, aiming to stay as faithful as possible to the equations outlined in the paper.
After a few months of studying in his spare time, he finally succeeded in replicating the behavior. According to the artist, the method is both robust and highly effective, enabling the transfer of information like Amplitude and Phase Velocity from the curves to the surface, allowing for adding more detail to the existing FLIP simulation in post-processing, all while preserving its low resolution.
Check out the paper here and see more of Moisè's work below:
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Custom rock brushes and alpha set, 18 brushes and height/alpha maps + 3 ztool rock meshes and a mini tutorial.