Hi Andrew, The bounding box of a circle actually is a square. But, after rotation, the resulting markup/stencil will have a new bounding box (with vertical height and horizontal width) large enough to contain the original bounding box (all objects are considered as boxes, no matter what their actual shape may be).
I've attached an image that demonstrates the growth of boxes: a circle with square bounding box being rotated by 30 degrees and back, showing all the bounding boxes involved (in colour). Without outline/skyline analysis of the actual shape, LilyPond just sees everything as boxes, exactly the way TeX does it and how it was done in hot metal typesetting. bb-rotation.png <http://lilypond.1069038.n5.nabble.com/file/t3887/bb-rotation.png> All the best, Torsten -- Sent from: http://lilypond.1069038.n5.nabble.com/User-f3.html _______________________________________________ lilypond-user mailing list lilypond-user@gnu.org https://lists.gnu.org/mailman/listinfo/lilypond-user