小程序360°图片查看

业务需求：模拟360°全景查看的效果；

获取最初的坐标

  trade(e) {
    this.setData({
      coord: e.changedTouches[0].pageX
    })
  },

手指左右滑动时切换图片

 changImage(e) {
    let num = this.data.coord;
    let moveNum = e.changedTouches[0].pageX;
    let imgNum = this.data.imgNum;
    let imgLength = this.data.photoArr360.length;
    let bad = moveNum - num;
    if (bad > 10) {
      if (imgNum < imgLength - 1) {
        imgNum++
        this.setData({
          coord: moveNum,
          imgNum: imgNum
        })
      } else if (imgNum == imgLength - 1) {
        this.setData({
          coord: moveNum,
          imgNum: 0
        })
      }
    } else if (bad < -10) {
      if (imgNum > 0) {
        imgNum--
        this.setData({
          coord: moveNum,
          imgNum: imgNum
        })
      } else if (imgNum == 0) {
        this.setData({
          coord: moveNum,
          imgNum: imgLength - 1
        })
      }
    }
  },

最终实现效果