public function dataProviderForProjection()
{
return [[[2, 4], [5, 3], [3.2352941176468, 1.94117647058808]], [[1, 2, 3], [4, 5, 6], [128 / 77, 160 / 77, 192 / 77]], [[4, 5, 6], [1, 2, 3], [16 / 7, 32 / 7, 48 / 7]], [[2, 9, -4], [-1, 5, 5], [-23 / 51, 115 / 51, 115 / 51]], [[1, 1, 1], [1, 1, 1], [1, 1, 1]], [[1, 1, 1], [2, 2, 2], [1, 1, 1]], [[2, 2, 2], [1, 1, 1], [2, 2, 2]], [[1, 2, 1], [2, 1, 2], [4 / 3, 2 / 3, 4 / 3]]];
}