HarmonyOS是否有滑动手势能模拟系统的Scroll，滑动惯性？

import Curves from '@ohos.curves';  
  
// xxx.ets  
@Entry  
@Component  
struct Index {  
  @State offsetX: number = 0;  
  @State offsetY: number = 0;  
  @State positionX: number = 0;  
  @State positionY: number = 0;  
  @State inertialX: number = 0;  
  @State inertialY: number = 0;  
  private iCurve: ICurve = Curves.springCurve(40, 1, 228, 50)  
  
  calculateInertiaLength(initialVelocity: number, decay: number, time: number) {  
    return initialVelocity * (1 - Math.exp(-decay * time));  
  }  
  
  build() {  
    Column() {  
      Text('PanGesture Offset:\nX: ' + this.offsetX + '\n' + 'Y: ' + this.offsetY)  
      Text('拖一下')  
        .fontSize(20)  
        .height(100)  
        .width(100)  
        .padding(20)  
        .border({ width: 3 })// 在组件上绑定布局位置信息  
        .translate({ x: this.offsetX, y: this.offsetY, z: 0 })  
        .animation({ curve: this.iCurve })  
        .gesture(// 绑定拖动手势  
          PanGesture()  
            .onActionStart((event: GestureEvent | undefined) => {  
              console.info('Pan start');  
            })// 当触发拖动手势时，根据回调函数修改组件的布局位置信息  
            .onActionUpdate((event: GestureEvent | undefined) => {  
              if (event) {  
                console.log('offsetX::' + event.offsetX + "offsetY::" + event.offsetY)  
                this.offsetX = this.positionX + event.offsetX;  
                this.offsetY = this.positionY + event.offsetY;  
  
              }  
            })  
            .onActionEnd((event: GestureEvent | undefined) => {  
              if (event) {  
                animateTo({ curve: Curves.springMotion() }, () => {  
                  this.offsetX = this.offsetX + this.calculateInertiaLength(event.velocityX, 0.05, 1)  
                  this.offsetY = this.offsetY + this.calculateInertiaLength(event.velocityY, 0.05, 1)  
                })  
                this.positionX = this.offsetX;  
                this.positionY = this.offsetY;  
              }  
            })  
        )  
    }  
    .height(200)  
    .width(250)  
  }  
} 
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