Dynamic Cloth Simulation: A Comparative Study of Explicit and Implicit Numerical Integration

Carvalho, Laise Lima de; Vidal, Creto Augusto; Cavalcante-Neto, Joaquim Bento; Oliveira, Suzana Matos França de

doi:10.1109/svr.2012.11

Cited by 3 publications

(2 citation statements)

References 26 publications

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“…На очередном шаге симуляции для каждой из вершин вычисляется суммарный вектор сил и тем или иным способом интегрируется уравнение её движения. Чаще всего пользуются явным методом Эйлера, простым или модифицированным методами Верле, а также методом Рунге-Кутты [1]. При своей простоте этот способ имеет ряд недостатков.…”

Section: представление ткани в виде системы масс и пружинunclassified

Parallel Tissue Simulation on a CPU by a Position-based Method

Kuprin

2023

Proceedings of the 33rd International Conference on Computer Graphics and Vision

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The article discusses the topic of multithreaded tissue simulation by Extended Position Based Dynamics on the CPU. A comparison of popular approaches to solving this problem is given and the advantages of XPBD are highlighted. The theoretical justification of the chosen algorithm and its connection with classical mechanics is given. A method of distributing computations between several threads based on a graph of constraints and "phantom" vertices has been found. In addition, a system for searching and processing collisions of the canvas with itself and solids using an LBVH tree and predicting contacts is described. The solutions found were implemented in the program code. After analyzing the stability and quality of the model and the speed of the application, ways to further improve performance are proposed.

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Section: представление ткани в виде системы масс и пружинunclassified

Parallel Tissue Simulation on a CPU by a Position-based Method

Kuprin

2023

Proceedings of the 33rd International Conference on Computer Graphics and Vision

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“…The problem is driven by an ordinary differential equation that describes Newton's second law and is solved numerically. To guarantee accurate and stable numerical solutions, a lot of integration methods have already been proposed [1], [6], [7], [8], each of which has its own advantages and drawbacks [9].…”

Section: Introductionmentioning

confidence: 99%

Cloth Simulation with Triangular Mesh Adaptivity

Oliveira

Vidal

Neto

et al. 2014

2014 27th SIBGRAPI Conference on Graphics, Patterns and Images

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In the last decades, cloth animation has been the focus of much research, because of demands from the entertainment industry and from e-commerce. That type of animation is usually produced by means of physics simulations that are computationally expensive. Cloth folding during oscillations or due to contact with rigid objects often requires a very dense mesh when high curvatures are present. In those situations, the dynamics simulation will involve huge matrices and vectors. So, in the attempt to reduce costs, adaptive remeshing is frequently proposed. In this work, we investigate a remeshing approach during dynamics simulation of cloth. Mesh refinement is applied only to regions that need a fine level of detail. Our remeshing strategy refines the mesh in regions of high curvature and simplifies the mesh in regions of low curvature. No matter how regular and coarse the initial mesh is, our remeshing strategy produces meshes that are well adapted to the irregularities of the solid objects at every time step of the draping simulation. The fabric model consists of a triangular mesh and uses a springmass-damper system to compute the forces between particles, which are located at the mesh's vertices. Collision detection depends on the arrangement of the cloth model and the objects in the scene. Although the tests show that, for comparable mesh sizes, the adaptive method does not always outperforms nonadaptive methods, the quality of the draping is much better when adaptive methods are used. Thus, adaptive methods can deliver comparable draping quality with fewer elements and less cost.

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