 data: [
       0,  0, // 0----1
      40,  0, // |    |
      40, 10, // | 3--2
      10, 10, // | |
      10, 20, // | 4-5
      30, 20, // |   |
      30, 30, // | 7-6
      10, 30, // | |
      10, 50, // 9-8
       0, 50,
    ],
  },
  indices: [
    0, 1, 2,
    0, 2, 3,
    0, 3, 8,
    0, 8, 9,
    4, 5, 6,
    4, 6, 7,
  ],
});

const camera = {
  x: 0,
  y: 0,
  rotation: 0,
  zoom: 1,
};

const scene = [
  { x:  20, y:  20, rotation: 0,       scale: 1,   color: [1,   0, 0, 1], bufferInfo},
  { x: