效果

代碼

using UnityEngine; using System.Collections; using System.IO;public class CropPicture : MonoBehaviour {string localPath = "http://192.168.1.100:8080/picture/15.jpg";Texture2D image;Texture2D cutImage;WWW www;Rect rect;float time;Vector2 pos1;Vector2 pos2;// Use this for initializationvoid Start(){StartCoroutine(LoadImage());}// Update is called once per framevoid Update(){//點擊鼠標左鍵，記錄第一個位置if (Input.GetMouseButtonDown(0)){pos1 = Input.mousePosition;time = Time.time;if (time > 1f){Debug.Log(pos1);}}//放開左鍵記錄第二個位置if (Input.GetMouseButtonUp(0)){pos2 = Input.mousePosition;Debug.Log(pos2);StartCoroutine(CutImage());time = 0;}}void OnGUI(){//當下載完成if (www.isDone){GUI.DrawTexture(new Rect(0, 0, 600, 904), image);}GUI.Button(new Rect(0, 0, 100, 50), "W" + Screen.width + "H" + Screen.height);if (pos1 != null){GUI.Button(new Rect(0, 50, 150, 50), pos1.ToString());}if (pos2 != null){GUI.Button(new Rect(0, 100, 150, 50), pos2.ToString());}if (cutImage != null){GUI.Button(new Rect(0, 150, 150, 50), "image W" + cutImage.width + "H" + cutImage.height);}if (rect != null){GUI.Button(new Rect(0, 200, 250, 50), rect.ToString());}}//下載圖片IEnumerator LoadImage(){www = new WWW(localPath);yield return www;image = www.texture;if (www.error != null){Debug.Log(www.error);}}//截圖IEnumerator CutImage(){//圖片大小cutImage = new Texture2D((int)(pos2.x - pos1.x), (int)(pos1.y - pos2.y), TextureFormat.RGB24, true);//坐標左下角為0rect = new Rect((int)pos1.x, Screen.height - (int)(Screen.height - pos2.y), (int)(pos2.x - pos1.x), (int)(pos1.y - pos2.y));yield return new WaitForEndOfFrame();cutImage.ReadPixels(rect, 0, 0, true); cutImage.Apply();yield return cutImage;byte[] byt = cutImage.EncodeToPNG();//保存截圖Project面板下要創建StreamingAssets文件夾，保存文件后要刷新Project面板圖片才會顯示出來File.WriteAllBytes(Application.streamingAssetsPath + "/CutImage.png", byt);} }

2016.5.7.17.34修改后的代碼

using UnityEngine; using System.Collections; using System.IO; using System;public class CropPicture : MonoBehaviour {string localPath = "http://192.168.1.100:8080/picture/15.jpg";Texture2D image;Texture2D cutImage;WWW www;Rect rect;float time;Vector2 pos1;Vector2 pos2;// Use this for initializationvoid Start(){StartCoroutine(LoadImage());}// Update is called once per framevoid Update(){//點擊鼠標左鍵，記錄第一個位置if (Input.GetMouseButtonDown(0)){pos1 = Input.mousePosition;time = Time.time;if (time > 1f){Debug.Log(pos1);}}//放開左鍵記錄第二個位置if (Input.GetMouseButtonUp(0)){pos2 = Input.mousePosition;Debug.Log(pos2);StartCoroutine(CutImage());time = 0;}}void OnGUI(){//當下載完成if (www.isDone){GUI.DrawTexture(new Rect(0, 0, 600, 904), image);}GUI.Button(new Rect(0, 0, 100, 50), "W" + Screen.width + "H" + Screen.height);if (pos1 != null){GUI.Button(new Rect(0, 50, 150, 50), pos1.ToString());}if (pos2 != null){GUI.Button(new Rect(0, 100, 150, 50), pos2.ToString());}if (cutImage != null){GUI.Button(new Rect(0, 150, 150, 50), "image W" + cutImage.width + "H" + cutImage.height);}if (rect != null){GUI.Button(new Rect(0, 200, 250, 50), rect.ToString());}}//下載圖片IEnumerator LoadImage(){www = new WWW(localPath);yield return www;image = www.texture;if (www.error != null){Debug.Log(www.error);}}//截圖IEnumerator CutImage(){//圖片大小cutImage = new Texture2D((int)(pos2.x - pos1.x), (int)(pos1.y - pos2.y), TextureFormat.RGB24, true);//坐標左下角為0rect = new Rect((int)pos1.x, Screen.height - (int)(Screen.height - pos2.y), (int)(pos2.x - pos1.x), (int)(pos1.y - pos2.y));yield return new WaitForEndOfFrame();cutImage.ReadPixels(rect, 0, 0, true);cutImage.Apply();yield return cutImage;byte[] byt = cutImage.EncodeToPNG();//保存截圖File.WriteAllBytes(Application.dataPath+ "/"+DateTime.Now.ToFileTime().ToString()+".png", byt);} }

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