1, 0, 1,
                    0, 0, 1, 0, 1, 1, 0, 1,
                    0, 0, 1, 0, 1, 1, 0, 1,
                    0, 0, 1, 0, 1, 1, 0, 1,
                    0, 0, 1, 0, 1, 1, 0, 1,
                    0, 0, 1, 0, 1, 1, 0, 1,
                ]);
                // 4 定义索引
                var indices = new Uint16Array([
                    0, 1, 2, 0, 2, 3,
                    4, 5, 6, 4, 6, 7,
                    8, 9, 10, 8, 10, 11,
                    12, 13, 14, 12, 14, 15,
       