8A?>;L7>20BL '5@B56=8: 0;3 =0G "@5C3>;L=8:(-5, 0, -4, -0.5) "@5C3>;L=8:(-4.5, 0.5, -2.5, -0.5) "@5C3>;L=8:(-3.5, 1, -0.5, 0) "@5C3>;L=8:(-1.5, 0.5, 0.5, -0.5) "@5C3>;L=8:(0, 0, 1, -0.5) :>= 0;3 "@5C3>;L=8:(25I x1, y1, x2, y2) =0G A<5AB8BLAO 2 B>G:C(x1, y1) >?CAB8BL ?5@> A<5AB8BLAO 2 B>G:C(x2, y1) A<5AB8BLAO 2 B>G:C((x1 + x2) / 2, y2) A<5AB8BLAO 2 B>G:C(x1, y1) ?>4=OBL ?5@> :>=