Eurographics 2020

Local Bases for Model-Reduced Smoke Simulation Displacement-Correlated XFEM for Simulating Brittle Fracture Mixing Yarns and Triangles in Cloth Simulation Binary Ostensibly-Implicit Trees for Fast Collision Detection A Practical Method for Animating Anisotropic Elastoplastic Materials Fast and Scalable Solvers for the Fluid Pressure Equations with Separating Solid Boundary Conditions Simulation of Dendritic Painting SoftSMPL: Data-driven Modeling […]

Local Bases for Model-reduced Smoke Simulations

Olivier Mercier, Derek Nowrouzezahrai We present a flexible model reduction method for simulating incompressible fluids. We derive a novel vector field basis composed of localized basis flows that have simple analytic forms and can be tiled on regular lattices, avoiding the use of complicated data structures or neighborhood queries. Local basis flow interactions can be […]

Displacement-Correlated XFEM for Simulating Brittle Fracture

Floyd M. Chitalu, Qinghai Miao, Kartic Subr, Taku Komura We present a remeshing-free brittle fracture simulation method under the assumption of quasi-static linear elastic fracture mechanics (LEFM). To achieve this, we devise two algorithms. First, we develop an approximate volumetric simulation, based on the extended Finite Element Method (XFEM), to initialize and propagate Lagrangian crack-fronts. […]

Mixing Yarns and Triangles in Cloth Simulation

Juan J. Casafranca, Gabriel Cirio, Alejandro Rodríguez, Eder Miguel, Miguel A. Otaduy This paper presents a method to combine triangle and yarn models in cloth simulation, and hence leverage their best features. The majority of a garment uses a triangle-based model, which reduces the overall computational and memory cost. Key areas of the garment use […]

Binary Ostensibly-Implicit Trees for Fast Collision Detection

Floyd M. Chitalu, Christophe Dubach, Taku Komura We present a simple, efficient and low-memory technique, targeting fast construction of bounding volume hierarchies (BVH) for broad-phase collision detection. To achieve this, we devise a novel representation of BVH trees in memory. We develop a mapping of the implicit index representation to compact memory locations, based on […]

A Practical Method for Animating Anisotropic Elastoplastic Materials

Camille Schreck, Chris Wojtan This paper introduces a simple method for simulating highly anisotropic elastoplastic material behaviors like the dissolution of fibrous phenomena (splintering wood, shredding bales of hay) and materials composed of large numbers of irregularly-shaped bodies (piles of twigs, pencils, or cards). We introduce a simple transformation of the anisotropic problem into an […]