void init()
{
VertexConstraints = new List <VertexConstraint> ();
VertexOld = new List <Vec3> ();
Force = new Vec3(0, 0, 0);
Mass = 0;
Model = IMatrix.Identity();
foreach (var v in VertexNow)
{
VertexOld.Add(v * 1);
}
}
public void SetIdentity()
{
stack.Clear();
stack.Push(IMatrix.Identity());
}