代码：console.log(‘aabb’,selfaabb.x,selfaabb.y);
console.log(‘node x,y’,this.node.x,this.node.y);
运行结果：aabb 262.168 342.84056742473007
node x,y 374.688 347.846
代码：console.log(‘aabb’,selfaabb.x,selfaabb.y);
console.log(‘node x,y’,this.node.x,this.node.y);
运行结果：aabb 262.168 342.84056742473007
node x,y 374.688 347.846