How to use the function of addForceAtVertex()?

I want to make a scene where there is a sphere in it
and I want to make it squeezed
I think this has something to do the function of addForceAtVertex(),which is a function of class NxCloth
I used it and it makes no difference

Did anybody has used addForceAtVertex() before?
I need to know what will the result be if this function is actually working
and may some samples will help a lot.

Anyway I just want to find any opinions or ideas that I could use

addForceAtVertex should work. What does your code look like? You can try to test it in the SampleCloth MyCloth::draw, there’s mCloth->addForceAtPos.

There’s also metal cloth in 2.8 if you want to distort your sphere if it’s metal.