Optimized Processing of Localized Collisions in Projective Dynamics
Optimized Processing of Localized Collisions in Projective Dynamics
复制标题
射影动力学中局部碰撞的优化处理
DOI:
10.1111/cgf.14385
复制
发表时间:
2021
影响因子:
2.5
通讯作者:
Sifakis, Eftychios
中科院分区:
文献类型:
--
作者:
Wang, Qisi;Tao, Yutian;Brandt, Eric;Cutting, Court;Sifakis, Eftychios
We present a method for the efficient processing of contact and collision in volumetric elastic models simulated using the Projective Dynamics paradigm. Our approach enables interactive simulation of tetrahedral meshes with more than half a million elements, provided that the model satisfies two fundamental properties: the region of the model's surface that is susceptible to collision events needs to be known in advance, and the simulation degrees of freedom associated with that surface region should be limited to a small fraction (e.g. 5%) of the total simulation nodes. In such scenarios, a partial Cholesky factorization can abstract away the behaviour of the collision‐safe subset of the face model into the Schur Complement matrix with respect to the collision‐prone region. We demonstrate how fast and accurate updates of bilateral penalty‐based collision terms can be incorporated into this representation, and solved with high efficiency on the GPU. We also demonstrate iterating a partial update of the element rotations, akin to a selective application of the local step, specifically on the smaller collision‐prone region without explicitly paying the cost associated with the rest of the simulation mesh. We demonstrate efficient and robust interactive simulation in detailed models from animation and medical applications.
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DOI:
10.1016/j.cag.2018.10.013
发表时间:
2018
期刊:
Comput. Graph.
影响因子:
--
作者:
Valentin Roussellet;Nadine Abu Rumman;Florian Canezin;Nicolas Mellado;L. Kavan;L. Barthe
通讯作者:
L. Barthe
DOI:
10.1145/3386569.3392396
发表时间:
2020
期刊:
ACM Transactions on Graphics (TOG)
影响因子:
--
作者:
Mickaël Ly;J. Jouve;Laurence Boissieux;Florence Bertails
通讯作者:
Florence Bertails
DOI:
10.1145/3388767.3407379
发表时间:
2020
期刊:
SIGGRAPH '20: ACM SIGGRAPH 2020 Talks
影响因子:
--
作者:
Klár, Gergely;Moffat, Andrew;Museth, Ken;Sifakis, Eftychios
通讯作者:
Sifakis, Eftychios
DOI:
10.2312/vriphys.20181065
发表时间:
2018
期刊:
ACM Transactions on Graphics (TOG)
影响因子:
--
作者:
Jing Li;Tiantian Liu;L. Kavan
通讯作者:
L. Kavan