The bbox element describes a rectangle. This rectangle is defined by:
-
PointAttributes corresponding to the 2D coordinates of the top left
corner,
- width and height attributes.
The rectangle corresponds to the outer bounding box of a shape.
The shape itself can be irregular
(for instance in the case of some compartments).
In the case of process nodes,
the bounding box only concerns the central glyph (square, or circle),
the input/output ports are not included, and neither are the lines connecting
them to the central glyph.
A bbox is required for all glyphs, and is optional for labels.