OpenCv OpenCv 座標回転 参考 https://stackoverflow.com/questions/13695317/rotate-a-point-around-another-point https://stackoverflow.com/questions/13695317/rotate-a-point-around-another-point https://tagsqa.com/detail/37273 https://stackoverflow.com/questions/786472/rotate-a-point-by-another-point-in-2d
