Unity3D WebCamTexture 调用外部摄像头
来源：程序员人生 发布时间：2015-05-05 07:54:12 阅读次数：10117次
1:Unity 中使用WebCamTexture 调用摄像头实现拍照和摄像。
using UnityEngine;
using System.Collections;
using System.IO;
using System.Runtime.Serialization;
using System.Runtime .Serialization.Formatters.Binary;
using System.Threading;
public class takePhoto : MonoBehaviour
{
public string deviceName;
//接收返回的图片数据
WebCamTexture tex;
public Texture2D _tex;
void OnGUI()
{
if (GUI.Button(new Rect(10, 20, 100, 40), "开启摄像头"))
{
// 调用摄像头
StartCoroutine(start());
}
if(GUI.Button(new Rect(10,70,100,40),"捕获照片"))
{
//捕获照片
tex.Pause();
StartCoroutine(getTexture());
}
if(GUI.Button(new Rect(10,120,100,40),"再次捕获"))
{
//重新开始
tex.Play();
}
if(GUI.Button(new Rect(120,20,80,40),"录相"))
{
//录相
StartCoroutine(SeriousPhotoes());
}
if(GUI.Button(new Rect(10,170,100,40),"停止"))
{
//停止捕获镜头
tex.Stop ();
StopAllCoroutines();
}
if(tex!=null)
{
// 捕获截图大小 ―距X左屏距离 | 距Y上屏距离
GUI.DrawTexture(new Rect(Screen.width/2⑴50,Screen.height/2⑴90,280,200),tex);
}
}
/// <summary>
/// 捕获窗口位置
/// </summary>
public IEnumerator start()
{
yield return Application.RequestUserAuthorization(UserAuthorization.WebCam);
if (Application.HasUserAuthorization(UserAuthorization.WebCam))
{
WebCamDevice[] devices = WebCamTexture.devices;
deviceName= devices[0].name;
tex=new WebCamTexture(deviceName,300,300,12);
tex.Play();
}
}
/// <summary>
/// 获得截图
/// </summary>
/// <returns>The texture.</returns>
public IEnumerator getTexture()
{
yield return new WaitForEndOfFrame();
Texture2D t=new Texture2D(400,300);
t.ReadPixels( new Rect(Screen.width/2⑵00,Screen.height/2⑸0,360,300),0,0,false);
//距X左的距离 距Y屏上的距离
// t.ReadPixels(new Rect(220, 180, 200, 180), 0, 0, false);
t.Apply();
byte[] byt=t.EncodeToPNG();
// File.WriteAllBytes(Application.dataPath+"/Photoes/"+Time.time+".jpg",byt);
tex.Play();
}
/// <summary>
/// 连续捕获照片
/// </summary>
/// <returns>The photoes.</returns>
public IEnumerator SeriousPhotoes()
{
while (true)
{
yield return new WaitForEndOfFrame();
Texture2D t = new Texture2D(400, 300, TextureFormat.RGB24, true);
t.ReadPixels(new Rect(Screen.width/2⑴80,Screen.height/2⑸0,360,300), 0, 0, false);
t.Apply();
print(t);
byte[] byt = t.EncodeToPNG();
// File.WriteAllBytes(Application.dataPath + "/MulPhotoes/" + Time.time.ToString().Split('.')[0] + "_" + Time.time.ToString().Split('.')[1] + ".png", byt);
Thread.Sleep(300);
}
}
}
2:Unity 中使用WebCamTexture 设置背景为摄像头画面
1在unity的场景中新建1个Quad作为背景，可以自行调理缩放和位置。
2.新建1个Material文件夹用来寄存Material，在Material里新建1个Material材质，并命名为CamTex。
3.选中CamTex材质，在Inspector面板当选择shader的模式为Unlit/Texture。
4.新建C#脚本，并将其命名为WebCam，双击脚本进行编辑，添加以下代码：
using UnityEngine;
using System.Collections;
public class WebCam : MonoBehaviour {
public string deviceName;
WebCamTexture tex;
// Use this for initialization
IEnumerator Start () {
yield return Application.RequestUserAuthorization(UserAuthorization.WebCam);
if(Application.HasUserAuthorization(UserAuthorization.WebCam))
{
WebCamDevice[] devices = WebCamTexture.devices;
deviceName = devices[0].name;
tex = new WebCamTexture(deviceName, 400, 300, 12);
renderer.material.mainTexture = tex;
tex.Play();
}
}
}
5.将CamWeb脚本和CamTex材质拖到Quad上
6.将Quad调至摄像机正对位置。
7.点击播放按钮便可调用摄像头，在quad的贴图会显示摄像头中的画面。
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