Function CL_Quad

	CL_Quad::CL_Quad();

	CL_Quad::CL_Quad(
		int new_x1,
		int new_y1,
		int new_x2,
		int new_y2,
		int new_x3,
		int new_y3,
		int new_x4,
		int new_y4);

	CL_Quad::CL_Quad(
		const CL_Rect & rect);

	CL_Quad::CL_Quad(
		const CL_Quad & q);