if (left.y != right.y && left.x != right.x) {
        for (int i = left.y, leny = right.y - left.y, xsf = 1; i <= leny; ++i, ++xsf) {
            for (int j = left.x << xsf, lenx = (right.x - left.x) >>  xsf; j < lenx; ++j)
                this->__scene[i][j] = true;
        }
}