var line = (function() {
  // dashed line

  function drawLine() {
    var ln = new Konva.Line({
      points: [10, 10, 70, 70],
      stroke: "grey",
      strokeWidth: 2,
      lineJoin: "round",
      draggable: true,
      strokeScaleEnabled : false
    });
    
    var layer = app.currentLayer();
    layer.add(ln);
    app.stage.add(layer);

    app.stage.draw();
  }
  return {
    drawLine: drawLine
  };
})();