using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using UnityEngine.UI;

public class Trolleydrawing : MonoBehaviour
{
    public Transform oneself;
    public SkinnedMeshRenderer trolley;
    public Button Hoibutton;
    public Button Geidbutton;
    public float rotationSpeed = 10f; // 旋转速度
    private Vector3 lastMousePosition; // 上一次的鼠标位置
    /// <summary>
    /// 动画移动时间
    /// </summary>
    public float duration = 1.5f;
    /// <summary>
    /// 管理协程
    /// </summary>
    private Coroutine blendShapeCoroutine;
    private Coroutine blendShapeCoroutine2;
    /// <summary>
    /// 放大缩小的速度
    /// </summary>
    public float zoomSpeed = 1f;
    public float minScale = 0.8f;  // 最小缩放比例
    public float maxScale = 4f; // 最大缩放比例
    void Start()
    {
        oneself = GetComponent<Transform>();
        //Hoibutton.onClick.AddListener(Unfold);
        //Geidbutton.onClick.AddListener(Restore);
    }


    void Update()
    {
        //if (Input.GetMouseButtonDown(0))
        //{
        //    // 记录当前鼠标位置
        //    lastMousePosition = Input.mousePosition;
        //}

        //// 检测鼠标左键是否按住
        //if (Input.GetMouseButton(0))
        //{
        //    // 计算鼠标移动的距离
        //    Vector3 mouseDelta = Input.mousePosition - lastMousePosition;
        //    lastMousePosition = Input.mousePosition;

        //    // 计算旋转的角度
        //    //float rotationX = -mouseDelta.y * rotationSpeed * Time.deltaTime;
        //    float rotationY = mouseDelta.x * rotationSpeed * Time.deltaTime;

        //    // 应用旋转到模型
        //    oneself.Rotate(Vector3.up, -rotationY, Space.World); // 绕世界坐标系的 Y 轴旋转
        //                                                         // oneself.Rotate(Vector3.right, -rotationX, Space.World); // 绕世界坐标系的 X 轴旋转
        //}
        // 获取鼠标滚轮的输入值
        float scrollInput = Input.GetAxis("Mouse ScrollWheel");

        // 计算缩放增量
        Vector3 scaleChange = Vector3.one * scrollInput * zoomSpeed;

        // 应用缩放增量
        transform.localScale += scaleChange;

        // 确保缩放值在规定范围内
        transform.localScale = new Vector3(
            Mathf.Clamp(transform.localScale.x, minScale, maxScale),
            Mathf.Clamp(transform.localScale.y, minScale, maxScale),
            Mathf.Clamp(transform.localScale.z, minScale, maxScale)
        );
    }
    /// <summary>
    /// 模型展开
    /// </summary>
    public void Unfold()
    {
        if (blendShapeCoroutine2 != null)
        {
            StopCoroutine(BlendShapeTransition(100));
        }
        blendShapeCoroutine2 = StartCoroutine(BlendShapeTransition(100));
    }
    /// <summary>
    /// 模型还原
    /// </summary>
    public void Restore()
    {
        //如果已有协程开启就先关闭
        if (blendShapeCoroutine != null)
        {
            StopCoroutine(blendShapeCoroutine);
        }
        blendShapeCoroutine = StartCoroutine(BlendShapeToZeroTransition());
    }

    // 协程实现 BlendShape 权重的平滑过渡
    private IEnumerator BlendShapeTransition(float targetWeight)
    {
        float startWeight = trolley.GetBlendShapeWeight(0);
        float elapsedTime = 0f;

        while (elapsedTime < duration)
        {
            elapsedTime += Time.deltaTime;
            float t = Mathf.Clamp01(elapsedTime / duration);
            float currentWeight = Mathf.Lerp(startWeight, targetWeight, t);
            trolley.SetBlendShapeWeight(0, currentWeight);
           
            yield return null;
        }

        // 确保最终值被设置
        trolley.SetBlendShapeWeight(0, targetWeight);
       
    }
    private IEnumerator BlendShapeToZeroTransition()
    {
        float startWeight = trolley.GetBlendShapeWeight(0);
        float elapsedTime = 0f;

        while (elapsedTime < duration)
        {
            elapsedTime += Time.deltaTime;
            float t = Mathf.Clamp01(elapsedTime / duration);
            float currentWeight = Mathf.Lerp(startWeight, 0f, t);
            trolley.SetBlendShapeWeight(0, currentWeight);
          
            yield return null;
        }

        // 确保最终值被设置为零
        trolley.SetBlendShapeWeight(0, 0f);
     
    }
}