Viewshed3D 成员列表

成员的完整列表，这些成员属于Viewshed3D，包括所有继承而来的成员

-	build	Viewshed3D
-	clearResult	Viewshed3D
	direction	Viewshed3D
	distance	Viewshed3D
	hiddenAreaColor	Viewshed3D
	horizontalFov	Viewshed3D
-	initWith:	Viewshed3D
	pitch	Viewshed3D
	quality	Viewshed3D
	targetPoint	Viewshed3D
	verticalFov	Viewshed3D
	viewerPosition	Viewshed3D
	visibleAreaColor	Viewshed3D