本文例項為大家分享了unity按住滑鼠選取區域截圖的具體程式碼，供大家參考，具體內容如下

private int capBeginX;
private int capBeginY;
private int capFinishX;
private int capFinishY;
 
public Image showImg;
 
// Use this for initialization
void Start () {
    
  }
  
  // Update is called once per frame
  void Update () {
    if (Input.GetMouseButtonDown (0)) {
      Vector3 mousePos = Input.mousePosition;
      Vector2 beginPos = new Vector2 (mousePos.x,mousePos.y);
      capBeginX = (int)mousePos.x;
      capBeginY = (int)mousePos.y;
    }
 
    if (Input.GetMouseButtonUp (0)) {
      Vector3 mousePos = Input.mousePosition;
      Vector2 finishPos = new Vector2 (mousePos.x,mousePos.y);
      capFinishX = (int)mousePos.x;
      capFinishY = (int)mousePos.y;
      //重新計算擷取的位置
      int capLeftX = (capBeginX < capFinishX) ? capBeginX : capFinishX;
      int capRightX = (capBeginX < capFinishX) ? capFinishX : capBeginX;
      int capLeftY = (capBeginY < capFinishY) ? capBeginY : capFinishY;
      int capRightY = (capBeginY < capFinishY) ? capFinishY : capBeginY;
 
      Rect rect=new Rect(capLeftX,capLeftY,capRightX,capRightY);
      StartCoroutine( Captrue (rect));
    }
  }
 
  IEnumerator Captrue(Rect rect){
 
    int t_width = Mathf.Abs (capFinishX - capBeginX);
    int t_length = Mathf.Abs (capFinishY - capBeginY);
 
    yield return new WaitForEndOfFrame ();
    Texture2D t = new Texture2D(t_width,t_length,TextureFormat.RGB24,true);//需要 
     正確設定好圖片儲存格式 
    t.ReadPixels(rect,false);//按照設定區域讀取畫素；注意是以左下角為原點讀取 
    t.Apply(); 
    byte[] byt = t.EncodeToPNG(); 
    File.WriteAllBytes(Application.dataPath + Time.time + ".png",byt); 
 
    Sprite target = Sprite.Create (t,new Rect(0,t_width,t_length),Vector2.zer);
    showImg.sprite = target;
  }

小編為大家分享一段Unity實現截圖功能的程式碼，供大家參考：

public class ScreenShot : MonoBehaviour 
{

  void OnScreenShotClick()
  {
    //得到當前系統時間
    System.DateTime now = System.DateTime.Now;
    string times = now.ToString();
    //去掉前後空格
    times = times.Trim();
    //將斜槓替換成橫槓
    times = times.Replace("/","-");

    string fileName = "ARScreenShot" + times + ".png";
    //判斷該平臺是否為安卓平臺
    if (Application.platform == RuntimePlatform.Android)
    {
      //引數依次為 螢幕寬度 螢幕高度 紋理格式 是否使用對映
      Texture2D texture = new Texture2D(Screen.width,Screen.height,false);
      //讀取貼圖
      texture.ReadPixels(new Rect(0,Screen.width,Screen.height),0);
      //應用截圖
      texture.Apply();
      //將物件序列化
      byte[] bytes = texture.EncodeToPNG();
      //設定儲存到的手機資料夾路徑
      string destination = "/sdcard/DCIM/Screenshots";
      //如果不存在該資料夾
      if (!Directory.Exists(destination))
      {
        //建立該資料夾
        Directory.CreateDirectory(destination);
      }
      string pathSave = destination + "/" + fileName;
      File.WriteAllBytes(pathSave,bytes);
    }
  }
}

以上就是本文的全部內容，希望對大家的學習有所幫助，也希望大家多多支援我們。