In this case, you can see a piece of cloth falling to the ball.
PBD method and a simple mass-spring system with regular triangles.
We try to use Jacobi method to update all vertices in one iteration simultaneously.
We also try to use Gauss-Seidel method to update two ends of an edge straightly.
Using gui to render the scene in 2D
Jacobi
2022-12-28.21.15.15.mov
Gauss-Seidel