EaselJS-是否可以在线条中添加模糊过滤器?

我正在尝试使用easelJS为单行添加模糊效果。我一直在关注createJS文档中的BlurFilter演示(除了它们使用的是圆而不是线)。除非我移除形状,否则我的形状将完全消失。缓存调用。这是否可以用线条实现,或者模糊仅限于形状?

function drawShape() {
  var shape = new createjs.Shape();
  shape.graphics.setStrokeStyle(10, "round")
  .beginStroke(colorPalette.shape[0])
  .beginFill(colorPalette.shape[0])
  .moveTo(200,400)
  .lineTo(1500,400);
  shape.cursor = "pointer";

  var blurFilter = new createjs.BlurFilter(50, 50, 1);
  shape.filters = [blurFilter];
  var bounds = blurFilter.getBounds();
  shape.cache(-50+bounds.x, -50+bounds.y, 100+bounds.width, 100+bounds.height); // Code works if I remove this line

  updateStage(shape); // Utility function that calls addChild and update on stage
}

<body onload="init()" onresize="resize()">
        <!-- App -->
        <canvas id="canvas"></canvas>
</body>