The procedural scratch generation process for rigid-body models automates the process of locating and painting scratches on a texture map. A script computes points where a scratch is most likely to occur at each frame of an animation sequence based on whether the distance between two objects lies within a threshold. These points are then used to create a map of the scratch pattern to guide the blending of scratches onto the image. The tool may be useful to expedite the animated film production pipeline as well as predict areas of wear on machines before they are manufactured
