fn cam_to_vrcam sel:#off del:#on =(	local sel_cam = #()	local del_cam = #()	case sel of	(		#off : cams = cameras		#on : cams = sel_cam + selection	)	case of	(		(VRayPhysicalCamera != undefined) : YY_vrcam = VRayPhysicalCamera isSelected:on		(VR物理摄影机 != undefined) : YY_vrcam = VR物理摄影机 isSelected:on		(VR_物理摄影机 != undefined) : YY_vrcam = VR_物理摄影机 isSelected:on	-- 	default: 	)	for c=1 to cams.count do	(		if (classof cams[c] == Freecamera) or (classof cams[c] == Targetcamera) do 		(			YY_new_cam = copy YY_vrcam			try cams[c].type = #free catch()			YY_new_cam.rotation = cams[c].rotation			YY_new_cam.pos = cams[c].pos			append del_cam cams[c]		)	)	delete YY_vrcam	case del of	(		#on : for d in del_cam do delete d		#off : ()	))--将默认相机转化为VR物理相机cam_to_vrcam sel:#on del:#on