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Background Knowledge: The background knowledge we present in this paper include the algorithm to calculate the deformation of the object shell that has been meshed in quadrangle in the process of manual shaping and the algorithm to automatically generate the mesh into a triangle from the given vertices on the object surface
To simulate the deformation of the skin layer under external force, we consider the skin layer as a shell that is homogene in composition, so the hardness of the skin layer is also considered to be homogene
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