Computer Graphics Laboratory ETH Zurich

ETH

Physics-Inspired Topology Changes for Thin Fluid Features

C. Wojtan, N. Thuerey, M. Gross, G. Turk

Proceedings of ACM SIGGRAPH (Los Angeles, USA, July 25-29, 2010), ACM Transactions on Graphics, vol. 29, no. 3, pp. 50:1-50:8
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Abstract

We propose a mesh-based surface tracking method for fluid animation that both preserves fine surface details and robustly adjusts the topology of the surface in the presence of arbitrarily thin features like sheets and strands. We replace traditional re-sampling methods with a convex hull method for connecting surface features during topological changes. This technique permits arbitrarily thin fluid features with minimal re-sampling errors by reusing points from the original surface. We further reduce re-sampling artifacts with a subdivision-based mesh-stitching algorithm, and we use a higher order interpolating subdivision scheme to determine the location of any newly-created vertices. The resulting algorithm efficiently produces detailed fluid surfaces with arbitrarily thin features while maintaining a consistent topology with the underlying fluid simulation.

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@article{Woj10,
    title = {Physics-Inspired Topology Changes for Thin Fluid Features},
    author = {Chris Wojtan and Nils Th{\"{u}}rey and Markus Gross and Greg Turk},
    journal = {ACM Trans. on Graphics (Proc. SIGGRAPH)},
    number = {3},
    volume = {29},
    year = {2010}
}
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