mixture of grids algorithm
right now tree based methods & direct solvers scale with particle count, or particle mesh (PM) / field based methods scale with resolution. mog decouples the complexity from both particle count and resolution, giving linear scaling with respect to grid count
using mog we can get spiral galaxies and other realistic morphologies in real time on consumer hardware
video: https://www.youtube.com/watch?v=lfAW1pV1ae4
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