Interactive high-resolution boundary surfaces for deformable bodies with changing topology

Jun Wu, Christian Dick, Rüdiger Westermann

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

26 Scopus citations

Abstract

Recent work has demonstrated that composite finite-elements provide an effective means for physically based modeling of deformable bodies. In this paper we present a number of highly effective improvements of previous work to allow for a high-performance and high-quality simulation of boundary surfaces of deformable bodies with changing topology, for instance, due to cuts and incisions. Starting at a coarse resolution simulation grid, along a cut we perform an adaptive octree refinement of this grid down to a desired resolution and iteratively pull the fine level finite-element equations to the coarse level. In this way, the fine level dynamics can be approximated with a small number of degrees of freedom at the coarse level. By embedding the hierarchical adaptive composite finite-element scheme into a geometric multigrid solver, and by exploiting the fact that during cutting only a small number of cells are modified in each time step, high update rates can be achieved for high resolution surfaces at very good approximation quality. To construct a high quality surface that is accurately aligned with a cut, we employ the dual-contouring approach on the fine resolution level, and we instantly bind the constructed triangle mesh to the coarse grid via geometric constrains.

Original languageEnglish
Title of host publicationVRIPHYS 2011 - 8th Workshop on Virtual Reality Interactions and Physical Simulations
Pages29-38
Number of pages10
DOIs
StatePublished - 2011
Event8th Workshop on Virtual Reality Interactions and Physical Simulations, VRIPHYS 2011 - Lyon, France
Duration: 5 Dec 20116 Dec 2011

Publication series

NameVRIPHYS 2011 - 8th Workshop on Virtual Reality Interactions and Physical Simulations

Conference

Conference8th Workshop on Virtual Reality Interactions and Physical Simulations, VRIPHYS 2011
Country/TerritoryFrance
CityLyon
Period5/12/116/12/11

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