Topology

Topology in 3D modeling describes the structure and connectivity of vertices, edges and faces in a mesh. It is not just about polygon count, but about edge flow — how edges follow and define anatomical or mechanical forms such as eyes, mouths and joints. Good topology (typically consistent quads and clear edge loops) produces smooth shading, predictable subdivision, correct deformation during animation and efficient rendering; poor topology can cause subdivision artifacts, pinching when bending, and difficulties with UV unwrapping and texturing.

When modeling a character, using edge loops around the eyes, mouth and shoulders is crucial: these loops follow muscle directions and ensure the mesh bends naturally during animation. If you retopologize a high-res sculpt for animation, you typically create a quad-based mesh with directed edge flow so subdivision modifiers behave predictably and you can bake normal maps from the details. For game assets you optimize topology by reducing polygon count while preserving key edges for silhouette and deformation, and you avoid n-gons in areas that will animate.