ct();

      ctx.save();
      ctx.translate(0, pixelRatio * (bounds.top - canvasBounds.top));

      const dt = this.viewport.currentDisplayTransform;
      const viewLWorld = dt.xViewToWorld(0);
      const viewRWorld = dt.xViewToWorld(canvasBounds.width * pixelRatio);
      const viewHeight = bounds.height * pixelRatio;

      this.draw(type, viewLWorld, viewRWorld, viewHeight);
      ctx.restore();
    },

    draw(type, viewLWorld, viewRWorld, viewHeight) {
    },

    addEventsToTrackMap(eventToTrackM