Inigo QuilezIntro One of the basic building blocks of Signed Distance Field (SDF) modeling based on basic primitives (as opposed to Grids or Neural Networks) is the Smooth-Minimum operator or Smooth-Union. This is similar to a regular Minimum/Union operator, but, well "smooth". This means that where the regular or non-smooth Minimum/Union takes two input SDFs a and b and returns the closest one of the two, ef
