Move UIDrawer to Drawing to its easier to type file names (no UI Preface).
Implement geometric placement of flyers on ceiling pipes. Next is stairwell, then done with geometry. Rather than messing with trig, the easiest thing to do is just compute start and end points and interpolate. The start and end points require a little trig, but it's very simple. Also fixed a bug in which the Layout Tool would have all parameters modifiable when firsts started (then after you change to a different flyer they grey out normally). Requires callijng updateEditableParameters in constructor.