Constructive Solid Geometry

A technique in 3-D modeling that creates complex shapes by combining simpler geometric primitives (cubes, spheres, cylinders) using boolean operations such as union, difference, and intersection. CSG is the foundational approach used by code-based modeling tools like OpenSCAD. For accessibility, CSG operations can be described textually and organized hierarchically, making them more amenable to non-visual understanding than mesh-based or sculpting approaches to 3-D modeling.