Size2D 成员列表

成员的完整列表，这些成员属于Size2D，包括所有继承而来的成员

	_height	Size2D	[protected]
	_width	Size2D	[protected]
+	ceiling:	Size2D	[static]
-	clone	Size2D
-	equals:	Size2D
-	equalsObj:	Size2D
+	floor:	Size2D	[static]
+	getEmpty	Size2D	[static]
	height	Size2D
-	init	Size2D
-	initWith:	Size2D
-	initWithWidth:Height:	Size2D
-	isEmpty	Size2D
+	round:	Size2D	[static]
	width	Size2D