Relax objectlib's requirements: it can be displayed not only on top of a DistortedScreen, but any DistortedFramebuffer.
No, move the object afterall. Why? See in Tutorials - a moved node has the right side missing.
Improve 'off-center' objects: move the node, not the object!This simplifies the Effects and makes them more correct (glow!)
off-center objects: finished.
progress with off-center objects.
1) introduce possibility to move objects, i.e. display them not in the middle of the screen (not fully functional yet)2) do away with unneeded any more interface 'EffectController' - since ObjectPreRender is the only implementation now.
Remove the 'setupObject()' redundant API.
Bugfix: we shouldn't be calling TwsityObject.solve() directly from the app, only through ObjectControl.solveOnly().
Simplifications
Move yet more code to objectlib.