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Assets/CoolapeFrame/Scripts/toolkit/TweenCameraZoom.cs

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+/*
+******************************************************************************** 
+  *Copyright(C),coolae.net 
+  *Author:  chenbin
+  *Version:  2.0 
+  *Date:  2017-01-09
+  *Description:  摄像机视图FieldView的变化
+  *Others:  
+  *History:
+*********************************************************************************
+*/ 
+using UnityEngine;
+using System.Collections;
+
+namespace Coolape
+{
+	public class TweenCameraZoom : MonoBehaviour
+	{
+		public float speed = 1;
+		public Camera camera;
+		public Camera subCamera;
+		public bool ignoreTimeScale = true;
+	
+		float midFieldOfView = 60;
+		float toFieldOfView = 60;
+		bool isPlaying = false;
+		float element = 1;
+		object onFinsihCallback;
+		bool needBack = false;
+		float staySeconds = 0;
+		bool isPlayBack = false;
+
+		// Use this for initialization
+		void Start ()
+		{
+			enabled = false;
+		}
+
+		float tmpField = 0;
+		bool isFinished = false;
+		float toFiled = 0;
+		float deltaTime = 0;
+
+		void Update ()
+		{
+			if (!isPlaying) {
+				return;
+			}
+			deltaTime = ignoreTimeScale ? Time.unscaledDeltaTime : Time.deltaTime;
+			tmpField = camera.fieldOfView;
+			tmpField += element * deltaTime * speed * 50;
+			toFiled = toFieldOfView;
+			if (needBack && !isPlayBack) {
+				toFiled = midFieldOfView;
+			}
+			if ((element > 0 && tmpField - toFiled > 0)
+			    ||	(element < 0 && tmpField - toFiled < 0)) {
+				tmpField = toFiled;
+				isFinished = true;
+			}
+			camera.fieldOfView = tmpField;
+			if (subCamera != null) {
+				subCamera.fieldOfView = tmpField;
+			}
+			if (isFinished) {
+				if (needBack) {
+					if (!isPlayBack) {
+						isPlayBack = true;
+						isPlaying = false;
+						Invoke ("playBack", staySeconds);
+					} else {
+						onFinish ();
+					}
+				} else {
+					onFinish ();
+				}
+			}
+		}
+
+		void playBack ()
+		{
+			zoom (toFieldOfView, speed, onFinsihCallback);
+		}
+
+		void onFinish ()
+		{
+			isPlaying = false;
+			enabled = false;
+			Utl.doCallback (onFinsihCallback, this);
+		}
+
+		public void zoom (float zoomValue, float speed, object callback)
+		{
+			this.speed = speed;
+			toFieldOfView = zoomValue;
+			onFinsihCallback = callback;
+			element = zoomValue - camera.fieldOfView > 0 ? 1 : (zoomValue - camera.fieldOfView == 0 ? 0 : -1);
+
+			needBack = false;
+			isFinished = false;
+			enabled = true;
+			isPlaying = true;
+		}
+
+		public void zoomFromTo (float mid, float to, float staySeconds, float speed, object callback)
+		{
+			midFieldOfView = mid;
+			toFieldOfView = to;
+			this.staySeconds = staySeconds;
+			this.speed = speed;
+			onFinsihCallback = callback;
+			element = mid - camera.fieldOfView > 0 ? 1 : (mid - camera.fieldOfView == 0 ? 0 : -1);
+
+			needBack = true;
+			isFinished = false;
+			isPlaying = true;
+			enabled = true;
+			isPlayBack = false;
+		}
+	}
+}