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Re:Show HN: 3D Meshes of Signed Distance Functions in Python by bhouston on Tuesday February 16, 2021 @09:39PM (#26161999)
I believe it is because sdf are very easy to do constructive solid geometry on. Intersect, union, subtract operations are basically free and robust. Where as with solid geometry robust csg booleans are highly problematic with rounding errors and edge cases galore.
Re:Show HN: 3D Meshes of Signed Distance Functions in Python by userbinator on Tuesday February 16, 2021 @09:48PM (#26162071)
The simplicity is also why the demoscene has made extensive use of them (see the https://iquilezles.org/ site for some great examples) --- very complex scenes can be described in a tiny amount of space.