unity-doc-小地图截图

CameraShot
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using System.IO;
using UnityEditor;
using UnityEngine;
using UnityEngine.SceneManagement;

public class CameraShot : MonoBehaviour {

private Camera m_camera; // 要截图的摄像机

void Start()
{
m_camera = GetComponent<Camera>();
m_camera.orthographic = true;
m_camera.orthographicSize = 200;
m_camera.transform.rotation = Quaternion.Euler(90, 0, 0);
m_camera.transform.position = new Vector3(0, 100, 0);
}

void Update()
{
if (Input.GetKeyDown("s"))
{
string path = string.Format("{0}/ScreenShot/min_{1}.jpg", Application.streamingAssetsPath, SceneManager.GetActiveScene().name);
Screenshot(path);
}
}

/// <summary>
/// 截图
/// </summary>
/// <param name="filePath">文件保存路径</param>
void Screenshot(string filePath)
{
RenderTexture rt = new RenderTexture(Screen.width, Screen.height, 16);
m_camera.targetTexture = rt;
m_camera.Render();
RenderTexture.active = rt;
Texture2D t = new Texture2D(Screen.width, Screen.height);

t.ReadPixels(new Rect(0, 0, t.width, t.height), 0, 0);
t.Apply();

byte[] mbyte = new byte[t.EncodeToJPG().Length];
mbyte = t.EncodeToJPG();
Debug.Log(mbyte.Length);

File.WriteAllBytes(filePath, t.EncodeToJPG());

UnityEditor.AssetDatabase.Refresh();

//还原各项截图前得初始设定
m_camera.targetTexture = null;
RenderTexture.active = null;
Destroy(rt);
}

[MenuItem("XEditor/Scene/CreateScreenShotCamera")]
public static void CreateScreenShotCamera()
{
GameObject go = new GameObject("Camera Screen Shot");
go.AddComponent<Camera>();
go.AddComponent<CameraShot>();
}
}

场景截图示意图