Function style_of 

fn style_of(field: &EditField, vantage: Vantage, family: Option<&str>) -> String

The field as the diagram has it: where the kernel put it, turned by the mark’s own angle about the rect’s centre, in the face and at the size the run was measured in. The pad, the ring and the rounding are the ones the kernel sized the field by, scaled by the camera like everything else.