Nonconvex rigid bodies with stacking
ACM SIGGRAPH 2003 Papers
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We present a method for efficiently generating plausible dents and scratches due to collisions using bump maps instead of mesh deformation. We use a rigid body simulator based on that of Guendelman et al. [2003], with collisions detected by interpenetration using the OPCODE and G3D libraries. When a collision occurs, we make multiple rendering passes to compute the bump map deformation on the GPU. Our method is limited by the dynamic range of the bump maps and will eventually saturate.