unity截屏功能
unity 截屏方式有很多种
我列几种我用过的方式
一、(说明待完善)全屏截图
using UnityEngine;
using System.Collections;
using System.IO;
public class FrameAnimation : MonoBehaviour
{
public Texture2D image;
public int w;
public int h;
public float nextTime = 0.0f;
public float rate = 0.3f;
int i = 0;
// Use this for initialization
void Start()
{
w = Screen.width;
h = Screen.height;
image = new Texture2D(w, h);
}
// Update is called once per frame
void Update()
{
if (Input.GetMouseButton(0) && Time.time > nextTime)
{
nextTime = Time.time + rate;
i++;
StartCoroutine(SaveImage(i));
}
}
IEnumerator SaveImage(int i)
{
yield return new WaitForEndOfFrame();
image.ReadPixels(new Rect(0, 0, w, h), 0, 0, true);//read pixels from screen to texture
image.Apply();
byte[] bytes = image.EncodeToPNG();
File.WriteAllBytes(Application.streamingAssetsPath + "/" + i + ".png", bytes);
Debug.Log("write a pic");
yield return null;
}
}
二、
选区截屏，Area所包含的区域就是被截取像素的区域
完整脚本，可直接套用
using System;
using UnityEngine;
using System.Collections;
using System.Collections.Generic;
using UnityEngine.UI;
using System.IO;
public delegate void FinishEvent(Texture2D texture, string savePath);
public class SavePicture : MonoBehaviour
{
public Camera cam;//场景相机
public RectTransform Canvas;//canvas
public RectTransform Area;//用来取景的ui，设置为透明的
public FinishEvent Finish;
public String photoPath;//保存图片的路径
//public CreatQRCode CreatCode;
// Take a screen shot immedi
void Start()
{
photoPath = "D:/PicTest/";
Area.SetParent(Canvas);
if (Area.anchorMax != Vector2.zero || Area.anchorMin != Vector2.zero || Area.pivot != Vector2.zero)
{
Debug.LogError("请将 Anchors 和 Pivot设置为 0");
}
}
void Update()
{
//if (Input.GetKeyDown(SaveKey))
//{
// Save();
//}
}
public void Save()
{
StartCoroutine(SavePNG());
}
//Texture2D tex = null;
IEnumerator SavePNG()
{
//tex = null;//清空
yield return new WaitForEndOfFrame();
Vector3 startPos = cam.ViewportToScreenPoint(new Vector2(Area.anchoredPosition3D.x / Canvas.sizeDelta.x, Area.anchoredPosition3D.y / Canvas.sizeDelta.y));
Vector2 top = new Vector2(Area.anchoredPosition3D.x, Area.anchoredPosition3D.y) + Area.sizeDelta;
Vector3 endPos = cam.ViewportToScreenPoint(new Vector2(top.x / Canvas.sizeDelta.x, top.y / Canvas.sizeDelta.y));
int width = (int)(endPos.x - startPos.x);
int height = (int)(endPos.y - startPos.y);
Texture2D tex = new Texture2D(width, height, TextureFormat.RGB24, false);
tex.ReadPixels(new Rect(startPos.x, startPos.y, width, height), 0, 0);
tex.Apply();
string texName = System.DateTime.Now.ToString("yyyy-MM-dd HH：mm：ss") + ".png";
tex.name = texName;
byte[] bytes = tex.EncodeToPNG();
//上传到服务器
//WWWForm newForm = new WWWForm();
//string id = "Photo_" + DateTime.Now.ToString("yyyy-MM-dd_hh-mm-ss");
//newForm.AddField("id", id);
//newForm.AddBinaryData("Photo", bytes, "photo.jpg");
//WWW w = new WWW("http://122.152.206.226:8090/Default.aspx", newForm);
//while (!w.isDone) { yield return new WaitForEndOfFrame(); }
//if (w.error == null)
//{
// //Debug.Log(w.text);
// //Debug.Log("上传成功");
//}
//else
//{
// Debug.LogError(w.error);
//}
//string url = "http://122.152.206.226:8090" + @"\Photos" + "/" + id + ".png";
//CreatCode.Creat(url);//生成二维码
//本地存储照片
if (tex == null)
yield return null;
//string fullDirPath = Path.GetFullPath(Path.Combine(Application.dataPath, "..")) + @"\Resources\Photos\";
string path = photoPath + @"\" + texName;
//Debug.Log("Save Pic:" + path);
if (PrintImage.Instances != null)//传递要打印的照片的路径
PrintImage.Instances.filePicPath = path;
//if (PhotoWallInterface.Instance != null)
// PhotoWallInterface.Instance.SetNewPhotos(tex);//显示新的照片
System.IO.File.WriteAllBytes(path, bytes);
Debug.Log("保存完毕：" + path);
//if (PhotoWallInterface.Instance != null)
//PhotoWallInterface.Instance.LoadByIO(path);//IO方式加载图片
if (Finish != null)
{
Finish(tex, path);
}
//Destroy(tex);
}
}
区域截屏方式三：
IEnumerator getScreenTexture(RectTransform rectT)
{
yield return new WaitForEndOfFrame();
Texture2D screenShot = new Texture2D((int)rectT.rect.width, (int)rectT.rect.height, TextureFormat.RGB24, true);
float x = rectT.localPosition.x + (Screen.width - rectT.rect.width) / 2;
float y = rectT.localPosition.y + (Screen.height - rectT.rect.height) / 2;
Rect position = new Rect(x, y, rectT.rect.width, rectT.rect.height);
screenShot.ReadPixels(position, 0, 0, true);//按照设定区域读取像素；注意是以左下角为原点读取
screenShot.Apply();
string fileName = DateTime.Now.ToString("yyyyMMddhhmmss") + ".jpg";
string filePath = "";
filePath = Application.persistentDataPath + "/HeadFold";
string scrPathName = filePath + "/" + fileName;
if (!Directory.Exists(filePath))
{
Directory.CreateDirectory(filePath);
}
//二进制转换
byte[] byt = screenShot.EncodeToPNG();
File.WriteAllBytes(scrPathName, byt);
System.Diagnostics.Process.Start(scrPathName);
}
截屏方式四：
读取RenderTexture 纹理
public void OnUserSave()
{
var prePath = Application.dataPath.Substring(0, Application.dataPath.LastIndexOf("/"));
string path = prePath + string.Format("/SaveFX/EFX{0}.png",index);
Save(path, CreateFrom(target));
index++;
}
public void Save(string path, Texture2D texture2D)
{
Debug.Log("Save Path:" + path);
var bytes = texture2D.EncodeToPNG();
//var bytes = texture2D.EncodeToJPG();
System.IO.File.WriteAllBytes(path, bytes);
}
public Texture2D CreateFrom(RenderTexture renderTexture)
{
Texture2D texture2D = new Texture2D(renderTexture.width, renderTexture.height, TextureFormat.ARGB32, false);
var previous = RenderTexture.active;
RenderTexture.active = renderTexture;
texture2D.ReadPixels(new Rect(0, 0, renderTexture.width, renderTexture.height), 0, 0);
RenderTexture.active = previous;
texture2D.Apply();
return texture2D;
}
备注：
保存图片
byte[] bytes = tex.EncodeToPNG();
string texName = System.DateTime.Now.ToString("yyyy-MM-dd HH：mm：ss") + ".png";
File.WriteAllBytes(Application.streamingAssetsPath + "/HBTexture/" + texName + ".png", bytes);
