<wx-image  :src="imgurl" class="rotate" :animation="animation"/>

created() {
this.animation1 = wx.createAnimation({
  duration: 500,
  timingFunction: 'linear', 
  delay: 0,
  transformOrigin: '50% 50% 0',
  success: function(res) {
    console.log("res")
  }
});

}

this.animation1.rotate(120 * (n)).step()
this.animation = this.animation1.export()