        this.el.hoverIndicator.style.width = pointSize + 'px';
                this.el.hoverIndicator.style.height = pointSize + 'px';
                this.el.hoverIndicator.style.left = (x - pointSize / 2.0 - 1) + 'px';
                this.el.hoverIndicator.style.top = (y - pointSize / 2.0 - 1) + 'px';

                this.el.hoverIndicator.classList.add('show');
                }

            } else {
              this.currentPoint = null;
              this.el.tip.classList.remove('show');
           