Java How To Program, Late Objects, 11th Edition

... ShapeType.PATH);
38
39         displayShape(); // sets polyline's visibility to true when app loads
40      }
41
42      // handles drawingArea's onMouseClicked event
43      @FXML
44      private void drawingAreaMouseClicked(MouseEvent e) {
45         polyline.getPoints().addAll(e.getX(), e.getY());
46         polygon.getPoints().addAll(e.getX(), e.getY()); 
47
48         // if path is empty, move to first click position and close path
49         if (path.getElements().isEmpty()) {
50            path.getElements().add(new MoveTo(e.getX(), e.getY()));
51            path.getElements().add(new ClosePath());               
52         }
53         else { // insert a new path segment before the ClosePath element
54            // create an arc segment and insert it in the path
55            ArcTo arcTo = new ArcTo();    
56            arcTo.setX(e.getX());         
57            arcTo.setY(e.getY());         
58            arcTo.setRadiusX( ...