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849天前using UnityEngine; |
using System.Collections; |
using UnityEngine.EventSystems; |
using UnityEngine.UI; |
//需要继承IBeginDragHandler,IEndDragHandler这两个接口 |
public class LevelButtonScrollRect : MonoBehaviour ,IBeginDragHandler,IEndDragHandler |
{ |
//ScrollRect滑动组件 |
private ScrollRect scrollRect; |
//鼠标释放时组件滑动的速度 |
public float smoothing = 4; |
//4个页面的位置节点 |
private float[] pageArray=new float[]{ 0,0.333f,0.666f,1 }; |
//toggle组件，用来页面和页面按钮的同步，需在对象物体赋值 |
public Toggle[] toggleArray; |
//用来存储 推算出来 需停靠页面 的值 |
private float targetHorizontalPosition=0; |
//判断是否处于拖拽状态 |
private bool isDraging = false; |
void Start () |
{ |
scrollRect = GetComponent<ScrollRect>(); |
} |
void Update () |
{ |
if(isDraging) //Mathf.Lerp让物体平衡滑动 |
scrollRect.horizontalNormalizedPosition = Mathf.Lerp(scrollRect.horizontalNormalizedPosition, |
targetHorizontalPosition, Time.deltaTime*smoothing); |
} |
public void OnBeginDrag(PointerEventData eventData) //处于拖拽状态 |
{ |
isDraging = false; |
} |
public void OnEndDrag(PointerEventData eventData) //拖拽结束 |
{ |
isDraging = true; |
float posX = scrollRect.horizontalNormalizedPosition; |
int index = 0; |
float offset = Mathf.Abs(pageArray[index] - posX); |
for (int i = 1; i < pageArray.Length; i++) |
{ |
float offsetTemp = Mathf.Abs(pageArray[i] - posX); |
if (offsetTemp < offset) |
{ |
index = i; |
offset = offsetTemp; |
} |
} |
targetHorizontalPosition = pageArray[index]; |
toggleArray[index].isOn = true; |
//scrollRect.horizontalNormalizedPosition = pageArray[index]; |
} |
//4个页面，4个调用方法 |
public void MoveToPage1(bool isOn) { |
if (isOn) |
{ |
targetHorizontalPosition = pageArray[0]; |
} |
} |
public void MoveToPage2(bool isOn) { |
if (isOn) { |
targetHorizontalPosition = pageArray[1]; |
} |
} |
public void MoveToPage3(bool isOn) { |
if (isOn) |
{ |
targetHorizontalPosition = pageArray[2]; |
} |
} |
public void MoveToPage4(bool isOn) { |
if (isOn) |
{ |
targetHorizontalPosition = pageArray[3]; |
} |
} |
} |
