Constrained Projective Dynamics: Real-Time Simulation of Deformable Objects with Energy-Momentum Conservation

This paper proposes a novel energy-momentum conserving integration method. Adopting Projective Dynamics, the proposed method extends its unconstrained minimization for time integration into the constrained form with the position-based energy-momentum constraints. This resolves the well-known problem of unwanted dissipation of energy and momenta without compromising the real-time performance and simulation stability. The proposed method also enables users to directly control the energy and momenta so as to easily create the vivid deformable and global motions they want, which is a fascinating feature for many real-time applications such as virtual/augmented reality and games.

Automated summary

This paper introduces a novel integration method that conserves energy and momentum, resolving the issue of uncontrolled dissipation while maintaining real-time performance and simulation stability. Additionally, users can directly control energy and momentum to create desired deformable and global motions, making it ideal for real-time applications like virtual/augmented reality and games.