Method step

czxing/src/main/cpp/zxing/src/BitMatrixCursor.h:98–102

	this_t& setDirection(PointI dir) { return d = dir, *this; }

	bool step(typename POINT::value_t s = 1)
	{
		p += s * d;
		return isIn(p);
	}

	this_t movedBy(POINT o) const noexcept { return {*img, p + o, d}; }
	this_t turnedBack() const noexcept { return {*img, p, back()}; }