Category Archives: Uncategorized

Space-time sculpting of liquid animation

Pierre-Luc Manteaux, Ulysse Vimont, Chris Wojtan, Damien Rohmer, Marie-Paule Cani We propose an interactive sculpting system for seamlessly editing pre-computed animations of liquid, without the need for any re-simulation. The input is a sequence of meshes without correspondences representing the … Continue reading →

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Projective Fluids

Marcel Weiler, Dan Koschier, Jan Bender We present a new method for particle based fluid simulation, using a combination of Projective Dynamics and Smoothed Particle Hydrodynamics (SPH). The Projective Dynamics framework allows the fast simulation of a wide range of … Continue reading →

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Simulating Visual Geometry

Matthias Müller, Nuttapong Chentanez, Miles Macklin In computer graphics, simulated objects typically have two or three different representations, a visual mesh, a simulation mesh and a collection of convex shapes for collision handling. Using multiple representations requires skilled authoring and … Continue reading →

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XPBD: Position-Based Simulation of Compliant Constrained Dynamics

Miles Macklin, Matthias Muller, Nuttapong Chentanez We address the long-standing problem of iteration count and time step dependent constraint stiffness in position-based dynamics (PBD). We introduce a simple extension to PBD that allows it to accurately and efficiently simulate arbitrary … Continue reading →

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A Robust Method to Extract the Rotational Part of Deformations

Matthias Muller, Jan Bender, Nuttapong Chentanez, Miles Macklin We present a novel algorithm to extract the rotational part of an arbitrary 3×3 matrix. This problem lies at the core of two popular simulation methods in computer graphics, the co-rotational Finite … Continue reading →

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A Macroblock Optimization for Grid-Based Nonlinear Elasticity

Nathan Mitchell, Michael Doescher, Eftychios Sifakis We introduce a new numerical approach for the solution of grid-based discretizations of nonlinear elastic models. Our method targets the linearized system of equations within each iteration of the Newton method, and combines elements … Continue reading →

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Constrained Neighbor Lists for SPH-based Fluid Simulations

Rene Winchenbach, Hendrik Hochstetter, Andreas Kolb In this paper we present a new approach to create neighbor lists with strict memory bounds for incompressible Smoothed Particle Hydrodynamics (SPH) simulations. Our proposed approach is based on a novel efficient predictive-corrective algorithm … Continue reading →

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Topology-Aware Neighborhoods for Point-Based Simulation and Reconstruction

Florian Canezin, Gael Guennebaud, Loïc Barthe Particle based simulations are widely used in computer graphics. In this field, several recent results have improved the simulation itself or improved the tension of the final fluid surface. In current particle based implementations, the particle … Continue reading →

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Compressing Fluid Subspaces

Aaron Demby Jones, Pradeep Sen, Theodore Kim Subspace fluid simulations, also known as reduced-order simulations, can be extremely fast, but also require basis matrices that consume an enormous amount of memory. Motivated by the extreme sparsity of Laplacian eigenfunctions in … Continue reading →

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Asynchronous Implicit Backward Euler Integration

Danyong Zhao, Yijing Li, Jernej Barbic In standard deformable object simulation in computer animation, all the mesh elements or vertices are timestepped synchronously, i.e., under the same timestep. Previous asynchronous methods have been largely limited to explicit integration. We demonstrate … Continue reading →

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