;

    var spread = 170;
    for (var yy = -1; yy <= 1; ++yy) {
      for (var xx = -2; xx <= 2; ++xx) {
        var matrix = m4.translate(projectionMatrix,
            translation[0] + xx * spread, translation[1] + yy * spread, translation[2]);
        matrix = m4.xRotate(matrix, rotation[0]);
        matrix = m4.yRotate(matrix, rotation[1] + yy * xx * 0.2);
        matrix = m4.zRotate(matrix, rotation[2]);
        matrix = m4.scale(matrix, scale[0], scale[1], scale[2]);

        // Set the matrix.
       