Map a band to the DrawingLine.visibility the renderer keys off: overhead → 'hidden' (dashed), everything kept → 'visible' (solid). Returns null for 'cull' so the caller drops the line.
DrawingLine.visibility
'hidden'
'visible'
null
'cull'
Map a band to the
DrawingLine.visibilitythe renderer keys off: overhead →'hidden'(dashed), everything kept →'visible'(solid). Returnsnullfor'cull'so the caller drops the line.