可能大家在使用Unity开发项目的时候,会碰到这样一个需求,就是去调用摄像头拍照或者保存图片,其中摄像头拍照方式也有多种,这里就给大家简单介绍下。
using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using UnityEngine.UI;
using System.IO;
public class CameraTest : MonoBehaviour
{
//摄像头图像类,继承自texture
WebCamTexture tex;
public Image WebCam;
public MeshRenderer ma;
public Button saveImage;
public RawImage bgimage_02;
// public RawImage bgimage_03;
int i;
void Start()
{
//开启协程,获取摄像头图像数据
StartCoroutine(OpenCamera());
saveImage.onClick.AddListener(SaveImage);
}
// Update is called once per frame
void Update()
{
}
IEnumerator OpenCamera()
{
//等待用户允许访问
yield return Application.RequestUserAuthorization(UserAuthorization.WebCam);
//如果用户允许访问,开始获取图像
if (Application.HasUserAuthorization(UserAuthorization.WebCam))
{
//先获取设备
WebCamDevice[] device = WebCamTexture.devices;
string deviceName = device[0].name;
//然后获取图像
tex = new WebCamTexture(deviceName);
//将获取的图像赋值
ma.material.mainTexture = tex;
//开始实施获取
tex.Play();
}
}
private void SaveImage()
{
//在上一段代码中加入该方法
Save(tex);
i += 1;
}
public void Save(WebCamTexture t)
{
Texture2D t2d = new Texture2D(t.width, t.height, TextureFormat.ARGB32, true);
//将WebCamTexture 的像素保存到texture2D中
t2d.SetPixels(t.GetPixels());
//t2d.ReadPixels(new Rect(200,200,200,200),0,0,false);
t2d.Apply();
//编码
byte[] imageTytes = t2d.EncodeToJPG();
//if (i % 2 == 1)
//{
// bgimage_02.texture= t2d;
//}
//else
//{
// bgimage_03.texture = t2d;
//}
bgimage_02.texture= t2d;
//存储
File.WriteAllBytes(Application.streamingAssetsPath + "/my/" + Time.time + ".jpg", imageTytes);
}
void StopCamera()
{
//等待用户允许访问
//Application.RequestUserAuthorization(UserAuthorization.WebCam);
//如果用户允许访问,开始获取图像
if (Application.HasUserAuthorization(UserAuthorization.WebCam))
{
//先获取设备
WebCamDevice[] device = WebCamTexture.devices;
string deviceName = device[0].name;
//然后获取图像
// tex = new WebCamTexture(deviceName);
// //将获取的图像赋值
// ma.material.mainTexture = tex;
//开始实施获取
tex.Stop();
}
}
//返回按钮
public void Back()
{
StopCamera();
UnityEngine.SceneManagement.SceneManager.LoadScene(0);
}
}
using UnityEngine;
using System.Collections;
using System.IO;
using UnityEngine.UI;
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;
public static string imageName;
public RawImage raw;
// 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));
//}
}
public void Btn_SavrImage()
{
////拍照保存
//i++;
//StartCoroutine(SaveImage(i));
UnityEngine.SceneManagement.SceneManager.LoadScene(2);
}
IEnumerator SaveImage(int i)
{
yield return new WaitForEndOfFrame();
image.ReadPixels(new Rect(0, 0, Screen.width, Screen.height), 0, 0, false);//read pixels from screen to texture
image.Apply();
byte[] bytes = image.EncodeToPNG();
string date = System.DateTime.Now.ToString("dd-MM-yy");
imageName = i + date + ".png";
File.WriteAllBytes(Application.streamingAssetsPath + "/" +imageName, bytes);
ReadImage();
Debug.Log("write a pic"+imageName);
yield return null;
}
public void ReadImage()
{
string textureName = Application.streamingAssetsPath + imageName;
//raw.name = textureName;
raw.texture = image;
// UnityEngine.SceneManagement.SceneManager.LoadScene(0);
}
}
注意:image.ReadPixels(new Rect(0, 0, Screen.width, Screen.height), 0, 0, false);
截图超过1024,768的时候有时候会报错,来自:https://blog.csdn.net/liang_704959721/article/details/80880422
标签:拍照,void,t2d,tex,Unity,new,using,public,摄像头
From: https://www.cnblogs.com/guangzhiruijie/p/16969169.html