微信小程序swiper实现滑动放大缩小效果

<swiper class="swiper-block" previous-margin="90rpx" next-margin="90rpx" current="0" bindchange="swiperchange">
<block wx:for="{{imgurls}}" wx:index="{{index}}">
<swiper-item class="swiper-item">
<image mode="aspectfill" src="{{item}}" class="slide-image {{swiperindex == index ? 'active' : ''}}"/>
</swiper-item>
</block>
</swiper>
.swiper-block{
height: 480rpx;
width: 100%;
}
.swiper-item{
display: flex;
flex-direction: column;
justify-content: center;
align-items: flex-start;
overflow:unset;
}
.slide-image{
height:320rpx;
width: 520rpx;
border-radius: 9rpx;
box-shadow: 0px 0px 30rpx rgba(0, 0,0,.2);
margin: 0rpx 30rpx;
z-index: 1;
}
.active{
transform: scale(1.14);
transition:all .2s ease-in 0s;
z-index: 20;
}.swiper-block{
height: 480rpx;
width: 100%;
}
.swiper-item{
display: flex;
flex-direction: column;
justify-content: center;
align-items: flex-start;
overflow:unset;
}
.slide-image{
height:320rpx;
width: 520rpx;
border-radius: 9rpx;
box-shadow: 0px 0px 30rpx rgba(0, 0,0,.2);
margin: 0rpx 30rpx;
z-index: 1;
}
.active{
transform: scale(1.14);
transition:all .2s ease-in 0s;
z-index: 20;
}
page({
data: {
imgurls: [
'http://img02.tooopen.com/images/20150928/tooopen_sy_143912755726.jpg',
'http://img06.tooopen.com/images/20160818/tooopen_sy_175866434296.jpg',
'http://img06.tooopen.com/images/20160818/tooopen_sy_175833047715.jpg'
],
indicatordots: false,
autoplay: false,
interval: 5000,
duration: 1000
},
swiperchange(e) {
const that = this;
that.setdata({
swiperindex: e.detail.current,
})
}
})