- pick up all relevant values from CSS
- also control the width of the StaveBracket
- observe the given overall height
Moreover, complete documentation drawing in Inkscape
and add a page to the TiddlyWiki, describing the principles
underlying this design and construction.
Identify the elements of the construction geometry in the "Sketch"
object in the FreeCAD document and paste the corresponding coordinate
values into the SVG drawing prepared for documentation.
The arc segment parameters seemingly are given in radians;
and while FreeCAD uses the common mathematical right-handed orientation,
the orientation in SVG is applied clockwise rather.
...since the construction is determined now (and was worked out in FreeCAD),
the SVG will serve to document the construction; thus the drawing
primitives are rearranged to use the unscaled reference coordinates
to be extracted from the FreeCAD document; all scaling and placement
in the SVG document will be applied through common groups.
My idea was to use the brackets from musical notation as inspiration;
if you know some principles of typography, it is rather straight-forward
to come up with a pleasing design of such a bracket, using a
cascade of golden ratio relationships.
BUT ... all of this is geometry, and translating that into a symbolic
or numerical calculation is excessively complicated. Thus I looked
for ways to use some geometry or CAD software to build such a construction.
The geometry software I tired was woefully inadequate for this task.
Using the Constraint system in FreeCAD, building the construction went
smooth and straight forward, but then I was unable to export that drawing
in a way indicating the construction clearly.
So in the end, I'll have to hand-pick the resulting numerical coordinates
from the FreeCAD XML document and integrate them directly into Cairo
drawing code...
