Qunee for HTML5 - English : Topological Eelation of Edge

When the edge is connected to the image, the topological structure of image will change. Now the system will call the method of Edge#connect() automatically. When the edge is removed from the image, the topological relation will be disconnected automatically.

  • #connect() - connect to the image
  • #disconnect() - disconnect topological relation
  • #isConnected() - whether it is connected
  • #getEdgeBundle() - acquire bundle edge collection

Example 

var a = graph.createNode("A", -100, 0);
var b = graph.createNode("B", 100, 0);
graph.createEdge(a, b);
var edge = graph.createEdge(a, b);
alert(edge.getEdgeBundle().edges.length);

Operation result is: 2