Surface discretisation
As we said before, in a particle system based model, the cloth is discreetized, i.e.
defined by a finite number of points, or nodes. In the model we used, points are weighted. The masses represent the cloth structure, but do not define
any forces.
In the figure below, we can see weighted points represented by black dots. Fibres will be explained further. They represent interaction
forces between nodes.

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