Make sure there are lines in z control before we try and draw it
Make sure there are lines in z control before we try and draw it

unlimitedbacon/MatterControl,larsbrubaker/MatterControl,unlimitedbacon/MatterControl,jlewin/MatterControl,jlewin/MatterControl,larsbrubaker/MatterControl,mmoening/MatterControl,jlewin/MatterControl,larsbrubaker/MatterControl,jlewin/MatterControl,mmoening/MatterControl,larsbrubaker/MatterControl,unlimitedbacon/MatterControl,mmoening/MatterControl,unlimitedbacon/MatterControl