156 lines
5.3 KiB
C#
156 lines
5.3 KiB
C#
using UnityEngine;
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using System.Collections;
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namespace Thousandto.Cinematic
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{
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/// <summary>
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/// 屏幕渐黑渐变
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/// </summary>
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public class CinematicFadeBlack : MonoBehaviour
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{
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//-------------------变量声明部分-------------------
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#region Variables
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public Shader CurShader;//着色器实例
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private Material CurMaterial;//当前的材质
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//shader需要的参数 [0, 1]
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private float Intensity = 1;
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//外部控制变量
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private float _speed = 1;
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private float _halfDuration = 0f;
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private Status _status;
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public float Duration = 2.0f;
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public float Strength = 0.5f;
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public bool Enable = false;
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#endregion
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//-------------------------材质的get&set----------------------------
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#region MaterialGetAndSet
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Material material
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{
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get
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{
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if (CurMaterial == null)
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{
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CurMaterial = new Material(CurShader);
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CurMaterial.hideFlags = HideFlags.HideAndDontSave;
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}
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return CurMaterial;
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}
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}
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#endregion
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//-----------------------------------------【Start()函数】---------------------------------------------
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// 说明：此函数仅在Update函数第一次被调用前被调用
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//--------------------------------------------------------------------------------------------------------
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void Start()
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{
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//找到当前的Shader文件
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CurShader = Shader.Find("Funcell/Cinematic/CinematicBlackBoard");
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}
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//-------------------------------------【OnRenderImage()函数】------------------------------------
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// 说明：此函数在当完成所有渲染图片后被调用，用来渲染图片后期效果
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//--------------------------------------------------------------------------------------------------------
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void OnRenderImage(RenderTexture sourceTexture, RenderTexture destTexture)
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{
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//着色器实例不为空，就进行参数设置
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if (CurShader != null)
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{
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//设置Shader中的外部变量
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material.SetFloat("_BlackRate", Intensity);
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//拷贝源纹理到目标渲染纹理，加上我们的材质效果
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Graphics.Blit(sourceTexture, destTexture, material);
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}
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//着色器实例为空，直接拷贝屏幕上的效果。此情况下是没有实现屏幕特效的
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else
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{
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//直接拷贝源纹理到目标渲染纹理
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Graphics.Blit(sourceTexture, destTexture);
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}
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}
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//-----------------------------------------【Update()函数】------------------------------------------
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// 说明：此函数在每一帧中都会被调用
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//--------------------------------------------------------------------------------------------------------
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void Update()
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{
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if (!Enable) return;
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var timeDelta = Time.deltaTime;
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switch (_status)
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{
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case Status.ToBlack:
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Intensity -= timeDelta * _speed;
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if(Intensity <= 0)
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{
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Intensity = 0;
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_status = Status.Duration;
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}
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break;
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case Status.Duration:
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Duration -= timeDelta;
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if(Duration <= 0)
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{
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Duration = 0;
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_status = Status.ToWhite;
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}
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break;
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case Status.ToWhite:
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Intensity += timeDelta * _speed;
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if(Intensity >= 1)
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{
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Intensity = 1;
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_status = Status.Finish;
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}
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break;
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case Status.Finish:
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Duration = 0;
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enabled = false;
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Enable = false;
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break;
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}
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}
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//-----------------------------------------【OnDisable()函数】---------------------------------------
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// 说明：当对象变为不可用或非激活状态时此函数便被调用
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//--------------------------------------------------------------------------------------------------------
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void OnDisable()
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{
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if (CurMaterial)
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{
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enabled = false;
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}
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}
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/// <summary>
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/// 开始变换
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/// </summary>
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/// <param name="duration">变换持续时间</param>
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/// <param name="transDuration"></param>
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public void StartTrans(float duration = 1)
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{
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Intensity = 1;
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Duration = duration;
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Enable = true;
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enabled = true;
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_status = Status.ToBlack;
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}
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private enum Status
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{
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ToBlack, //渐黑
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Duration, //持续时间
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ToWhite, //渐白
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Finish, //完成
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}
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}
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} |