Unity Game Optimization - Third Edition

Collider types

There are four different types of 3D colliders in Unity. In order of the lowest performance cost to the greatest, they are as follows:

• Sphere
• Capsule
• Box
• Mesh

The first three collider types are often called primitives and maintain precise shapes, although they can generally be scaled in different directions to meet specific needs. Mesh Colliders can, however, be customized to a particular shape depending on the assigned mesh. There are also three types of 2D Collider—Circle, Box, and Polygon—that are functionally similar to Sphere, Box, and Mesh Colliders, respectively. All of the following information is mostly transferable to the equivalent 2D shape.

Note that we can also generate cylindrical 3D objects in Unity, but this ...