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TOPIC: Quads can be dangerous .....

Quads can be dangerous ..... 2 weeks 5 days ago #275

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Carbon supports Quad and Triangle meshes.
If you have Quad meshes you should just feed those to Carbon without triangulating them, as Carbon knows how to handle them to avoid mechanical bias of the simulation.

However, if you are using Carbon Cloth Tailored Model, you have to use triangles.
If your triangle meshes are coming from Marvelous, then you are good to go.
But if you are using native Quad meshes, then you really need to triangulate them with at least alternating triangle splits, or ideally Delaunay triangulation.

The temptation might be to just triangulate your Quad meshes any old how. However if you just use the standard Maya triangulate for example, you will get all the triangles with the same orientation and that will mechanically bias the simulation as you can see in this image below. Upper mesh is triangulated in the same direction and lower mesh is a left / right pattern.

You can see the upper one is slanting because of the bias. They are they same res, same sim (lower one is just further away).

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