Material-Aware Mesh Deformations

Abstract
Most real world objects consist of non-uniform materi- als; as a result, during deformation the bending and shear- ing are distributed non-uniformly and depend on the local stiffness of the material. In the virtual environment there are three prevalent approaches to model deformation: purely geometric, physically driven, and skeleton based. This paper proposes a new approach to model deforma- tion that incorporates non-uniform materials into the geo- metric deformation framework. Our approach provides a simple and intuitive method to control the distribution of the bending and shearing throughout the model according to the local material stiffness. Thus, we are able to gen- erate realistic looking, material-aware deformations at in- teractive rates. Our method works on all types of models, including models with continuous stiffness gradation and non-articulated models such as cloth. The material stiff- ness across the surface can be specified by the user with an intuitive paint-like interface or it can be learned from a sequence of sample deformations.

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