1. A computer-implemented method for creating a computer-generated three-dimensional (3D) model in a broken state, the method comprising: removing an area of the computer-generated 3D model in an unbroken state to create the computer-generated 3D model in the broken state; and implementing a mapping between the computer-generated 3D model in the unbroken state and the computer-generated 3D model in a broken state to enable operations performed on the computer-generated 3D model in the broken state to utilize data defining the computer-generated 3D model in the unbroken state, wherein the mapping maintains a relationship between data defining the computer-generated 3D model in the unbroken state and data defining the computer-generated 3D model in the broken state.