I just started digging into Houdini pyro. As a practice, I want to duplicate this fire spreading shot in the video (starting at 00:19).
https://www.facebook...100268402351436
From the look of it, I see three different rings of fire expanding from the same ignition point(the outer blue fire, second less intense ring of fire, and the last ring of fire burning more intensely)So I have been using different particle emitters for each ring.
What I am having trouble is the second ring of fire where the fire streaks lick and moves along the surface of the floor. Any idea how this could be done? Or maybe my logic is totally wrong here?



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