Cool.

I looked into cloth sim of 3DS Max. All examples seem to be Delauney triangulation. Cool.

3DS documentation explains

Quote - **Shear—**Resistance to shearing. Higher values result in stiffer cloth fabrics. Shear defines how much the individual triangles can deform. If you were to lay the edges of the triangle out in a strait line this value would represent how long this line can stretch out to. With a high value this length will only be the sum of the length of all of the sides at rest. A low value will allow this length to be greater then that off all of its sides at rest. This length of stretched sides is not on a one to one basis. One side of the polygon may stretch more then another

So - this is what I wanted to know. It is the resistance to changes of the PERIMETER of a triangle. This is not at all an analog of the quad shearing effect - in quad shearing, the perimeter is unchanged BY DEFINITION. Here the change in perimeter is the definition. Very odd that they would use the same word to mean exactly opposite concepts.

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