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SDFs and the Fast sweeping algorithm in Jax

SDFs and the Fast sweeping algorithm in Jax

5 comments

·May 8, 2025
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singron

You might also be interested in JFA https://en.m.wikipedia.org/wiki/Jump_flooding_algorithm

cyber_kinetist

As a bonus: the vanilla JFA can only calculate unsigned distances, but you can extend this to signed distance computation using a simple trick: by inverting your JFA result and setting it as the seed for running a second DFA. (See https://blog.demofox.org/2016/03/02/actually-making-signed-d... for a better explanation)

andybak

First skim and I'm confused about the meaning of "interface" in this context. Anyone?

ljouhet

https://en.wikipedia.org/wiki/Interface_(matter)

Skepfyr

I think this is something like a boundary between two fluids. For example, if you had oil and water in a glass you could describe the 2d surface where they meet as the interface.