Author Archives: christopherbatty

TightCCD: Efficient and Robust Continuous Collision Detection using Tight Error Bounds

Zhendong Wang, Min Tang , Ruofeng Tong, and Dinesh Manocha We present a realtime and reliable continuous collision detection (CCD) algorithm between triangulated models that exploits the floating point hardware capability of current CPUs and GPUs. Our formulation is based … Continue reading

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Deformable Objects Collision Handling with Fast Convergence

Siwang Li, Zherong Pan, Jin Huang,  Hujun Bao, Xiaogang Jin We present a stable and efficient simulator for deformable objects with collisions and contacts. For stability, an optimization derived from the implicit time integrator is solved in each timestep under … Continue reading

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An Efficient Boundary Handling with a Modified Density Calculation for SPH

Makoto Fujisawa, Kenjiro T. Miura We propose a new boundary handling method for smoothed particle hydrodynamics (SPH). Previous approaches required the use of boundary particles to prevent particles from sticking to the boundary. We address this issue by correcting the fundamental … Continue reading

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Quadratic Contact Energy Model for Multi-Impact Simulation

Tianxiang Zhang, Sheng Li, Guoping Wang, Dinesh Manocha, Hanqiu Sun Simultaneous multi-impact simulation is a challenging problem in modeling collision for rigid bodies. There are several physical criteria for an ideal model of rigid body collision, but existing models generally … Continue reading

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Model Reduced Variational Fluid Simulation

Beibei Liu, Gemma Mason, Julian Hodgson, Yiying Tong, Mathieu Desbrun We present a model-reduced variational Eulerian integrator for incompressible fluids, which combines the efficiency gains of dimension reduction, the qualitative robustness of coarse spatial and temporal resolutions of geometric integrators, … Continue reading

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Fast Multiple-Fluid Simulation Using Helmholtz Free Energy

Tao Yang, Jian Chang, Bo Ren, Ming Lin, Jian Jun Zhang, Shi-Min Hu Multiple-fluid interaction is an interesting and common visual phenomenon we often observe. In this paper, we present an energybased Lagrangian method that expands the capability of existing … Continue reading

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Wetbrush: GPU-based 3D painting simulation at the bristle level

Zhili Chen, Byungmoon Kim, Daichi Ito, Huamin Wang We present a real-time painting system that simulates the interactions among brush, paint, and canvas at the bristle level. The key challenge is how to model and simulate sub-pixel paint details, given … Continue reading

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A Chebyshev Semi-iterative Approach for Accelerating Projective and Position-based Dynamics

Huamin Wang In this paper, we study the use of the Chebyshev semi-iterative approach in projective and position-based dynamics. Although projective dynamics is fundamentally nonlinear, its convergence behavior is similar to that of an iterative method solving a linear system. … Continue reading

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A Unified Approach for Subspace Simulation of Deformable Bodies in Multiple Domains

Xiaofeng Wu, Rajaditya Mukherjee, Huamin Wang Multi-domain subspace simulation can efficiently and conveniently simulate the deformation of a large deformable body, by constraining the deformation of each domain into a different subspace. The key challenge in implementing this method is … Continue reading

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SIGGRAPH Asia 2015

SIGGRAPH Asia 2015: Surface Turbulence for Particle-Based Liquid Simulations A unified approach for subspace simulation of deformable bodies in multiple domains A Chebyshev semi-iterative approach for accelerating projective and position-based dynamics Wetbrush: GPU-based 3D painting simulation at the bristle level … Continue reading

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