Tiantian Liu, Sofien Bouaziz, and Ladislav Kavan.Real-time example-based elastic deformation. Yuki Koyama, Kenshi Takayama, Nobuyuki Umetani, and Takeo Igarashi.Long range attachments: a method to simulate inextensible clothing in computer games. Tae-Yong Kim, Nuttapong Chentanez, and Matthias Müller-Fischer.Projective dynamics: fusing constraint projections for fast simulation. Sofien Bouaziz, Sebastian Martin, Tiantian Liu, Ladislav Kavan, and Mark Pauly.A quadratic bending model for inextensible surfaces. Miklos Bergou, Max Wardetzky, David Harmon, Denis Zorin, and Eitan Grinspun. Eurographics '17 Tutorials, Article 6, 31 pages. A survey on position based dynamics, 2017. Jan Bender, Matthias Müller, and Miles Macklin.Position-based simulation of continuous materials. Jan Bender, Dan Koschier, Patrick Charrier, and Daniel Weber.Issue reports and pull requests are highly welcomed. These simulated results were generated by examples/variational-implicit-2d/main.cpp and examples/variational-implicit-3d/main.cpp, respectively, which use the variational implicit Euler method and the co-rotational model. This library offers some utility functions to implement the finite element method (FEM) and simple examples of such implementations. This simulated result was generated by examples/aerodynamics/main.cpp. This library calculates aerodynamic "drag" and "lift" forces based on the model used in Disney's Frozen. This library supports wind effects for cloth simulation. These simulated results were generated by examples/pbd-xpbd-comparison/main.cpp. This property makes the parameter tuning easier and more consistent. As the number of iterations increases, the constraint stiffnesses converge to some (non-infinitely-stiff) states in accordance with the compliance parameters. This issue makes the parameter tuning difficult. As the number of iterations increases, the constraints become infinitely stiff regardless of the stiffness parameters. The constraint stiffnesses in PBD are dependent on the number of iterations for constraint solving.
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