Removing an Edge from a Mouse Click that is NOT on the edge











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I have a GUI application demonstrating undirected Graph structure. The Gui is available in here. One of the features is delete an edge between two vertices. So to delete an edge from the graph (GUI) a user can have two options. A user can hover over the mouse on the edge and click on it to delete that edge. Below is the following code for that part -



// assume there are some defined vertices v1, v2, ...
// an edge has an instance variable of Line class
// also assume that all vertices and edges are unique

Edge edge = new Edge(v1, v2);
edge.getLine().setCursor(Cursor.CROSSHAIR);
edge.getLine().setOnMouseClicked(e ->
view.getCenter().getChildren().remove(edge.getLine()));
graph.addEdge(v1, v2, edge);
view.getCenter().getChildren().add(edge.getLine());


and the second option is a user can click on the closet edge he/she wants to delete instead of clicking on the edge. Assume he/she is not clicking on the intersection of a line. The picture shows the problem. enter image description here. Let's consider a user wants to delete the Orange edge and the red coordinates show where a user clicked. Is there a way to delete the closest edge based on the click?










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    I have a GUI application demonstrating undirected Graph structure. The Gui is available in here. One of the features is delete an edge between two vertices. So to delete an edge from the graph (GUI) a user can have two options. A user can hover over the mouse on the edge and click on it to delete that edge. Below is the following code for that part -



    // assume there are some defined vertices v1, v2, ...
    // an edge has an instance variable of Line class
    // also assume that all vertices and edges are unique

    Edge edge = new Edge(v1, v2);
    edge.getLine().setCursor(Cursor.CROSSHAIR);
    edge.getLine().setOnMouseClicked(e ->
    view.getCenter().getChildren().remove(edge.getLine()));
    graph.addEdge(v1, v2, edge);
    view.getCenter().getChildren().add(edge.getLine());


    and the second option is a user can click on the closet edge he/she wants to delete instead of clicking on the edge. Assume he/she is not clicking on the intersection of a line. The picture shows the problem. enter image description here. Let's consider a user wants to delete the Orange edge and the red coordinates show where a user clicked. Is there a way to delete the closest edge based on the click?










    share|improve this question


























      up vote
      0
      down vote

      favorite









      up vote
      0
      down vote

      favorite











      I have a GUI application demonstrating undirected Graph structure. The Gui is available in here. One of the features is delete an edge between two vertices. So to delete an edge from the graph (GUI) a user can have two options. A user can hover over the mouse on the edge and click on it to delete that edge. Below is the following code for that part -



      // assume there are some defined vertices v1, v2, ...
      // an edge has an instance variable of Line class
      // also assume that all vertices and edges are unique

      Edge edge = new Edge(v1, v2);
      edge.getLine().setCursor(Cursor.CROSSHAIR);
      edge.getLine().setOnMouseClicked(e ->
      view.getCenter().getChildren().remove(edge.getLine()));
      graph.addEdge(v1, v2, edge);
      view.getCenter().getChildren().add(edge.getLine());


      and the second option is a user can click on the closet edge he/she wants to delete instead of clicking on the edge. Assume he/she is not clicking on the intersection of a line. The picture shows the problem. enter image description here. Let's consider a user wants to delete the Orange edge and the red coordinates show where a user clicked. Is there a way to delete the closest edge based on the click?










      share|improve this question















      I have a GUI application demonstrating undirected Graph structure. The Gui is available in here. One of the features is delete an edge between two vertices. So to delete an edge from the graph (GUI) a user can have two options. A user can hover over the mouse on the edge and click on it to delete that edge. Below is the following code for that part -



      // assume there are some defined vertices v1, v2, ...
      // an edge has an instance variable of Line class
      // also assume that all vertices and edges are unique

      Edge edge = new Edge(v1, v2);
      edge.getLine().setCursor(Cursor.CROSSHAIR);
      edge.getLine().setOnMouseClicked(e ->
      view.getCenter().getChildren().remove(edge.getLine()));
      graph.addEdge(v1, v2, edge);
      view.getCenter().getChildren().add(edge.getLine());


      and the second option is a user can click on the closet edge he/she wants to delete instead of clicking on the edge. Assume he/she is not clicking on the intersection of a line. The picture shows the problem. enter image description here. Let's consider a user wants to delete the Orange edge and the red coordinates show where a user clicked. Is there a way to delete the closest edge based on the click?







      java object-oriented graph javafx






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      edited 5 mins ago

























      asked 1 hour ago









      Hamidur Rahman

      436




      436



























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