g.getCenterY(),g,!1)));this.graph.snapDelta(b,a,!c,k,n);b=this.getDelta(a,l,b.x,p,b.y);c=this.graph.container;k||null==this.guideX?null!=this.guideX&&(e=d=null,null!=l&&null!=a&&(d=Math.min(a.y+b.y-this.graph.panDy,l.y),e=Math.max(a.y+a.height+b.y-this.graph.panDy,l.y+l.height)),this.guideX.points=null!=d&&null!=e?[new mxPoint(m,d),new mxPoint(m,e)]:[new mxPoint(m,-this.graph.panDy),new mxPoint(m,c.scrollHeight-3-this.graph.panDy)],this.guideX.stroke=this.getGuideColor(l,!0),this.guideX.node.style.visibility=