public DynamicMesh(string newName = "dynmesh")
{
mesh.name = newName;
vertices = new List<Vector3>();
uv = new List<Vector2>();
triangles = new List<int>();
tangents = new List<Vector4>();
subTriangles = new Dictionary<int, List<int>>();
subTriangles.Add(0, new List<int>());
bounds = new Bounds();
}