Signed distance fields

This article delves into signed distance fields (SDFs), a technique for representing 3D shapes using functions that output distance to the nearest surface. It begins with a personal anecdote about creating a shape with different cross-sections from various angles, then explains how SDFs simplify boolean operations like union via min() functions. The content covers 2D examples, rendering methods for 3D SDFs, and references to primitive shape SDFs. It is a technical tutorial focused on computer graphics, programming, and math, relevant to IT/technology topics such as software development and rendering algorithms.