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To make the simulation even more fun I made it possible to tear the cloth by shooting a red bullet at the grid. The red sphere is pulled downward under the influence of gravity and breaks any constraints within its radius.

The early videos follow - click to download them. The later (and much better) videos can be found throughout the following pages.

Tearing the cloth	Colouring the cloth
Running the tornado with connected particles	Blowing in the wind
External view of tearing the cloth	Zoom from view of the tornado to another

Running on the VICAT in ViSLAB at the University of Sydney. Different views are visible on the various surfaces of the table.