private Mesh CreateTile(Vector3 index0, Vector3 index1, Vector3 index2, Vector3 index3)
{
MeshGen mesh = new MeshGen();
// Mesh Generation
mesh.Vertices.Add(index0);
mesh.UV.Add(new Vector2(0f, 0f));
mesh.Normals.Add(Vector3.up);
mesh.Vertices.Add(index1);
mesh.UV.Add(new Vector2(0f, 1f));
mesh.Normals.Add(Vector3.up);
mesh.Vertices.Add(index2);
mesh.UV.Add(new Vector2(1f, 1f));
mesh.Normals.Add(Vector3.up);
mesh.Vertices.Add(index3);
mesh.UV.Add(new Vector2(1f, 0f));
mesh.Normals.Add(Vector3.up);
mesh.CreateTriangles(new Vector3Int(0, 1, 2));
mesh.CreateTriangles(new Vector3Int(0, 2, 3));
mesh.ApplyMeshChanges();
return(mesh.Mesh);
}