一: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),"录像")){//录像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/2-150,Screen.height/2-190,280,200),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>/// 获取截图/// </summary>/// <returns>The texture.</returns>public IEnumerator getTexture(){yield return new WaitForEndOfFrame();Texture2D t=new Texture2D(400,300);t.ReadPixels( new Rect(Screen.width/2-200,Screen.height/2-50,360,300),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/2-180,Screen.height/2-50,360,300), 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);}}}
二:Unity 中使用WebCamTexture 设置背景为摄像头画面
1在unity的场景中新建一个Quad作为背景，可以自行调节缩放和位置。
2.新建一个Material文件夹用来存放Material，在Material里新建一个Material材质，，并命名为CamTex。
3.选中CamTex材质，在Inspector面板中选择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 initializationIEnumerator 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.点击播放按钮即可调用摄像头，在quad的贴图会显示摄像头中的画面。
获致幸福的不二法门是珍视你所拥有的遗忘你所没有的。
