box2d 创建圆形

Creator 2.x
#1 
let criShape=new b2.CircleShape();

if(criShape){
criShape.radius = 10;
}

box2d 想创建一个圆形 但是 报错了 Uncaught TypeError: Cannot add property radius, object is not extensible

#2

不用组件而是自己new 有特殊逻辑？

#3 
   let FristcriShape=new b2.CircleShape();
    if(FristcriShape){
        FristcriShape.m_radius=this.lineWidth/1.8/32;
        FristcriShape.m_p=new b2.Vec2(polys[0].x/32,polys[0].y/32);
    }

问题已经解决了，哈哈！！！