I’ve got a problem with manual cloth tearing using PhysX 2.8.4.
Initially I have e.g. this cloth state (with some cuts already applied):
Red circle shows place of interest for this example.
Then I try to apply 2 different cuts (white vector is the cut normal going out of teared vertex, yellow line is the cut plane):
In both cases I get the triangle of interest almost cut out and hanging on single vertex:
And this connecting vertex cannot be torn anymore. I need simulate the scissor incisions on cloth and these vertices, appearing while cutting the cloth along, are really annoying because they look like thin steel threads which cannot be cut at all.
Well, my question is: “Why does it happening and how to avoid it?”