getConnectionPoints method

@override GraphConnectionPoints? getConnectionPoints(GraphNode source, GraphNode target, Widget sourceWidget, Widget targetWidget,)

Calculates connection points between two nodes.

Returns intersection points where links should connect to the nodes' shapes, based on their current geometry.

Implementation

@override
GraphConnectionPoints? getConnectionPoints(
  GraphNode source,
  GraphNode target,
  Widget sourceWidget,
  Widget targetWidget,
) {
  final outgoing = _getLineIntersections(source, target);
  final incoming = _getLineIntersections(target, source);

  if (outgoing == null || incoming == null) {
    return null;
  }
  return GraphConnectionPoints(outgoing: outgoing, incoming: incoming);
}