In this work, we show that exploiting additional variables in a mixed finite element formulation of deformation leads to an efficient physics-based character skinning algorithm. Taking as input, a user-defined rig, we show how to efficiently compute deformations of the character mesh which respect artist-supplied handle positions and orientations, but without requiring complicated constraints on the physics solver, which can cause poor performance. Rather we demonstrate an efficient, user controllable skinning pipeline that can generate compelling character deformations, using a variety of physics material models.

翻译：在本研究中，我们证明了在变形的混合有限元公式中引入额外变量，能够推导出一种高效的基于物理的角色蒙皮算法。该算法以用户定义的骨架系统为输入，可高效计算角色网格的变形，同时满足美术师指定的控制点位置与朝向约束，且无需对物理求解器施加复杂约束（此类约束常导致性能下降）。我们展示了一套高效、用户可控的蒙皮流程，该流程能够运用多种物理材质模型，生成具有视觉说服力的角色变形效果。