using System.Collections;
using UnityEngine;
using UnityEngine.Rendering;
using UnityEngine.Rendering.HighDefinition;
 
/*
 * 
 * Writer:June
 * 
 * Date: 2020.10.14
 * 
 * Function:動態(tài)邊角壓暗效果
 * 
 * Remarks:
 * 
 */
 
 
/// <summary>
/// 掛載當前腳本的GameObject必須確保有Volume組件
/// </summary>
[RequireComponent(typeof(Volume))]
public class DynamicVignette : MonoBehaviour
{
 /// <summary>
 /// 后處理體積容器
 /// </summary>
 private Volume volume;
 /// <summary>
 /// 對應(yīng)要修改的效果————>邊角壓暗效果
 /// </summary>
 private Vignette vignette;
 /// <summary>
 /// 是否成功獲取邊角壓暗屬性
 /// </summary>
 public bool IsGetAttribute { get; private set; }
 /// <summary>
 /// 動畫播放需要的時間
 /// </summary>
 public float animtionTime;
 /// <summary>
 /// 強度范圍
 /// </summary>
 [Range(0.1f, 1)]
 public float vignetteIntensity = 0.1f;
 /// <summary>
 /// 動畫開關(guān)
 /// </summary>
 private bool isPlay = false;
 /// <summary>
 /// 計時器
 /// </summary>
 private float timer = 0;
 /// <summary>
 /// 每幀更新的強度總和（用于對邊角壓暗強度的賦值，并且每幀更新）
 /// </summary>
 private float frameIntensity = 0;
 /// <summary>
 /// 幀率
 /// </summary>
 [Range(10, 60)]
 public float frameRate = 60;
 
 
 
 private void Start()
 {
 //獲取引用
 volume = GetComponent<Volume>();
 //從配置文件或配置表中獲取屬性 TryGet方法返回的是bool類型的
 IsGetAttribute = volume.profile.TryGet(out vignette);
 }
 
 
 private void Update()
 {
 if (Input.GetKeyDown(KeyCode.A))
 {
 //使用協(xié)程
 StartCoroutine(VignetteEffect());
 }
 }
 
 //經(jīng)過測試，每秒執(zhí)行51次，Update函數(shù)每秒執(zhí)行次數(shù)不一定
 private void FixedUpdate()
 {
 //確保獲取到了屬性
 if (!IsGetAttribute) return;
 if (isPlay)
 {
 timer += Time.deltaTime;
 VignetteEffect(timer);
 }
 }
 
 /// <summary>
 /// 按鈕觸發(fā)
 /// </summary>
 public void ButtonEvent()
 {
 isPlay = true;
 }
 
 /// <summary>
 /// 邊角壓暗效果
 /// tips:注意intensity不可以直接賦值，intensity的類型不是float
 /// </summary>
 private void VignetteEffect(float currentTime)
 {
 //判斷時間
 if (currentTime >= animtionTime / 2f)
 {
 //用 總時間的一半 * 幀率 = 在這段時間要更新的幀數(shù)，再用 規(guī)定的強度 / 總幀數(shù) = 每幀更新的強度
 frameIntensity -= vignetteIntensity / (51 * animtionTime / 2f);
 vignette.intensity.value = frameIntensity;
 }
 else
 {
 frameIntensity += vignetteIntensity / (51 * animtionTime / 2f);
 vignette.intensity.value = frameIntensity;
 }
 //播放完成
 if (currentTime >= animtionTime) 
 {
 isPlay = false;
 timer = 0;
 frameIntensity = 0;
 }
 }
 
 
 /// <summary>
 /// 邊角壓暗效果協(xié)程
 /// </summary>
 /// <returns></returns>
 IEnumerator VignetteEffect()
 {
 //從0->目標強度
 for (float i = 0; i <= vignetteIntensity; i+= vignetteIntensity / (frameRate * animtionTime / 2f))
 {
 vignette.intensity.value = i;
 //每0.02秒更新一幀
 yield return new WaitForSeconds(0.02f);
 }
 //從目標強度->0
 for (float i = vignetteIntensity; i >= 0; i -= vignetteIntensity / (frameRate * animtionTime / 2f))
 {
 vignette.intensity.value = i;
 yield return new WaitForSeconds(0.02f);
 }
 }
}

using UnityEngine;
using UnityEngine.Rendering;
using UnityEngine.Rendering.HighDefinition;
 
/*
 * 
 * Writer:June
 * 
 * Date: 2020.11.09
 * 
 * Function:控制后處理效果之邊角壓暗效果
 * 
 * Remarks:
 * 
 */
 
 
[RequireComponent(typeof(Volume))]
public class ControlPP_Vignette : MonoBehaviour
{
 /// <summary>
 /// 后期處理容器
 /// </summary>
 private Volume volume;
 /// <summary>
 /// 邊角壓暗效果
 /// </summary>
 private Vignette vignette;
 /// <summary>
 /// 是否成功獲取邊角壓暗屬性
 /// </summary>
 public bool IsGetAttribute { get; private set; }
 /// <summary>
 /// 顯示/隱藏邊角壓暗
 /// </summary>
 private bool IsFadeIn, IsFadeOut;
 /// <summary>
 /// 壓暗的變化速度
 /// </summary>
 [Header("壓暗效果的變化速度"),Range(0.5f,5),SerializeField]
 private float fadeSpeed = 1f;
 /// <summary>
 /// 壓暗強度最大值
 /// </summary>
 [Header("壓暗強度最大值"), Range(0, 1),SerializeField]
 private float effectMax = 0.6f;
 /// <summary>
 /// 默認初始化顏色
 /// </summary>
 public Color defaultColor;
 
 private void Start()
 {
 //獲取引用
 volume = GetComponent<Volume>();
 //默認關(guān)閉
 IsFadeIn = false;
 //從配置文件或配置表中獲取屬性 TryGet方法返回的是bool類型的
 IsGetAttribute = volume.profile.TryGet(out vignette);
 //如果沒有獲取到邊角壓暗效果，則創(chuàng)建邊角壓暗效果
 if (!IsGetAttribute) CreatVignetteEffect(defaultColor);
 }
 
 private void Update()
 {
 if (IsFadeIn)
 {
 vignette.intensity.value += fadeSpeed * Time.deltaTime;
 //判斷是否達到目標，到達后設(shè)置為false
 IsFadeIn = vignette.intensity.value < effectMax;
 IsFadeOut = !IsFadeIn;
 }
 if (IsFadeOut)
 {
 vignette.intensity.value -= fadeSpeed * Time.deltaTime;
 IsFadeOut = vignette.intensity.value < effectMax;
 }
 }
 
 /// <summary>
 /// 觸發(fā)邊角壓暗效果（提供給外部調(diào)用）
 /// </summary>
 public void TriggerEffect()
 {
 //先判斷是否獲取得到了邊角壓暗
 if (IsGetAttribute) IsFadeIn = true;
 }
 
 
 /// <summary>
 /// 創(chuàng)建邊角壓暗效果
 /// </summary>
 /// <param name="color">初始顏色</param>
 private void CreatVignetteEffect(Color color)
 {
 //將邊角壓暗效果添加到配置文件中 ture:將所有屬性激活
 vignette = volume.profile.Add<Vignette>(true);
 //初始化顏色
 vignette.color.value = color;
 //初始化強度
 vignette.intensity.value = 0;
 //標記為獲取到邊角壓暗
 IsGetAttribute = true;
 }
}