<abstract xmlns="http://www.w3.org/1999/xhtml"><p>We propose an approach for real-time physically semi-realistic animation of strings which directly manipulates the string positions by position based dynamics. The main advantage of a position based dynamics is its controllability. Instability problems of explicit integration schemes can be avoided. Specifically, we offer the following three contributions. We introduce the non-elongating and non-stretchable mass spring dynamics model based on Position Based Dynamics to simulate 1D string. We introduce a method for propagating the twisting angle along the chain of segments. In addition, we solve collision constraints by regularly distributing the spheres along the chain segments followed by particle projection to validate the positions. Proposed strain limiting constraint can handle the strings fixed in multiple locations contrary to single fixed side as is common for hair models. The use of multiple constraints provides an efficient treatment for stiff twisting and non-stretchable mass spring dynamics model.</p></abstract>

We propose an approach for real-time physically semi-realistic animation of strings which directly manipulates the string positions by position based dynamics. The main advantage of a position based dynamics is its controllability. Instability problems of explicit integration schemes can be avoided. Specifically, we offer the following three contributions. We introduce the non-elongating and non-stretchable mass spring dynamics model based on Position Based Dynamics to simulate 1D string. We introduce a method for propagating the twisting angle along the chain of segments. In addition, we solve collision constraints by regularly distributing the spheres along the chain segments followed by particle projection to validate the positions. Proposed strain limiting constraint can handle the strings fixed in multiple locations contrary to single fixed side as is common for hair models. The use of multiple constraints provides an efficient treatment for stiff twisting and non-stretchable mass spring dynamics model.

Towards the non-stretchable and non-elongating string with stress-strain handling

Faculty of Mathematics, Physics and Informatics

Journal of Applied Mathematics, Statistics and Informatics

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

We propose an approach for real-time physically semi-realistic animation of strings which directly manipulates the string positions by position based dynamics....

Towards the non-stretchable and non-elongating string with stress-strain handling

Published Online: Dec 21, 2019

Page range: 29 - 46

DOI: https://doi.org/10.2478/jamsi-2019-0007

Keywords
non-elongating strings, twisting, tearing, flicking, string animation

© 2019 Faculty of Natural Sciences, University of Saint Cyril and Metodius

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

Towards the non-stretchable and non-elongating string with stress-strain handling

Published Online: Dec 21, 2019

Page range: 29 - 46

DOI: https://doi.org/10.2478/jamsi-2019-0007

Keywordsnon-elongating strings, twisting, tearing, flicking, string animation

© 2019 Faculty of Natural Sciences, University of Saint Cyril and Metodius

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

Keywords
non-elongating strings, twisting, tearing, flicking, string animation