hololens拍照

代码仅供参考

using UnityEngine;
using UnityEngine.UI;
using System.Collections;
using System;public class test : MonoBehaviour
{    private WebCamTexture mWebcamTexBack;private WebCamTexture mWebcamTexFront;int back = -1, front = -1, current = -1;public RawImage rawImg_CamTexture;public Button btn_Photo;public Button btn_Change;public Image img_Preview;public Text txtInfos;public Text txtInfos2;// Use this for initializationvoid Start (){btn_Photo.onClick.AddListener(() => { OnBtn_Photo(); });btn_Change.onClick.AddListener(() => { OnBtn_Change(); });StartCoroutine(InitAndOpenCamera());PrintInfo();}void Update(){if(Time.frameCount%10==0){PrintInfo();}}IEnumerator InitAndOpenCamera(){yield return StartCoroutine(ApplyCamera());OpenBackCam();}/// <summary>/// 申请相机/// </summary>/// <returns></returns>IEnumerator ApplyCamera(){if (!Application.HasUserAuthorization(UserAuthorization.WebCam)){yield return Application.RequestUserAuthorization(UserAuthorization.WebCam);//授权}if (Application.HasUserAuthorization(UserAuthorization.WebCam)){int length = WebCamTexture.devices.Length;if (length <= 0){Debug.Log("你的设备没有摄像头！！！");enabled = false;yield break;}else if(length == 1){mWebcamTexBack = new WebCamTexture(WebCamTexture.devices[0].name, (int)(Screen.width), (int)(Screen.height), 12);}else{                for(int i= 0; i < length; i++){if(WebCamTexture.devices[i].isFrontFacing){front = i;}else{if(back==-1){back = i;}}}if(front==-1){front = back + 1;}}}{enabled = false;}}void OpenBackCam(){if (back == -1){Debug.Log("你的设备没有摄像头！！！");return;}current = back;if (mWebcamTexFront!=null && mWebcamTexFront.isPlaying){mWebcamTexFront.Stop();}//if(mWebcamTexBack!=null)//{//    if (mWebcamTexBack.isPlaying)//    {//        return;//    }//    mWebcamTexBack.Play();//    return;//}mWebcamTexBack = new WebCamTexture(WebCamTexture.devices[current].name, (int)(Screen.height), (int)(Screen.width), 20);mWebcamTexBack.Play();rawImg_CamTexture.texture = mWebcamTexBack;}void OpenFrontCam(){if(front==-1){OpenBackCam();return;}current = front; if (mWebcamTexBack != null && mWebcamTexBack.isPlaying){mWebcamTexBack.Stop();}//if (mWebcamTexFront != null)//{//    if (mWebcamTexFront.isPlaying)//    {//        return;//    }//    mWebcamTexFront.Play();//    return;//}mWebcamTexFront = new WebCamTexture(WebCamTexture.devices[front].name, (int)(Screen.height), (int)(Screen.width), 20);mWebcamTexFront.Play();rawImg_CamTexture.texture = mWebcamTexFront;}private void OnBtn_Photo(){StartCoroutine(GetTexture());}private void OnBtn_Change(){ChangeCamera();}public void ChangeCamera(){if(current==back){OpenFrontCam();}else{OpenBackCam();}WebCamTexture _webCamTexture = GetCurrent_WebCamTexture();int videoRotationAngle = _webCamTexture.videoRotationAngle;rawImg_CamTexture.transform.rotation = Quaternion.Euler(0, 0, -videoRotationAngle);}public WebCamTexture GetCurrent_WebCamTexture(){WebCamTexture _webCamTexture;if (current == back) _webCamTexture = mWebcamTexBack;else _webCamTexture = mWebcamTexFront;return _webCamTexture;}public IEnumerator GetTexture(){WebCamTexture _webCamTexture = GetCurrent_WebCamTexture();_webCamTexture.Pause();yield return new WaitForEndOfFrame();// 旋转预览精灵int videoRotationAngle = _webCamTexture.videoRotationAngle;img_Preview.transform.parent.rotation = Quaternion.Euler(0, 0, -videoRotationAngle);// 确定预览图，要截取镜头的大小int w = _webCamTexture.width;w = _webCamTexture.height > w ? w : _webCamTexture.height;Vector2 offset = new Vector2((_webCamTexture.width - w) / 2, (_webCamTexture.height - w) / 2);//Texture2D mTexture = new Texture2D(_webCamTexture.width, _webCamTexture.height, TextureFormat.ARGB32, false);//mTexture.SetPixels32(_webCamTexture.GetPixels32());Texture2D mTexture = new Texture2D(w, w, TextureFormat.ARGB32, false);mTexture.SetPixels(_webCamTexture.GetPixels((int)offset.x,(int)offset.y, w, w));mTexture.Apply();        img_Preview.sprite = Sprite.Create(mTexture, new Rect(0, 0, w, w),Vector2.zero);_webCamTexture.Play();//byte[] bt = mtexture.EncodeToPNG();//string mPhotoName = DateTime.Now.ToString("yyyyMMddHHmmss") + ".png";//mPhotoPath = Application.persistentDataPath + "/" + mPhotoName;//System.IO.File.WriteAllBytes(mPhotoPath, bt);//Debug.LogError("照片路径  " + mPhotoPath);//if (callback != null) callback();}void PrintInfo(){if (txtInfos == null || !txtInfos.isActiveAndEnabled) return;System.Text.StringBuilder sb = new System.Text.StringBuilder();sb.AppendLine("screen: w = " + Screen.width + " h = " + Screen.height);sb.AppendLine("backCamText: " + mWebcamTexBack.width + ", " + mWebcamTexBack.height);sb.AppendLine("frontCamText: " + mWebcamTexFront.width + ", " + mWebcamTexFront.height);sb.Append("current: " + current);sb.Append("  back: " + back);sb.AppendLine("  front: " + front);sb.AppendLine("back videoRotationAngle:" + mWebcamTexBack.videoRotationAngle);sb.AppendLine("front videoRotationAngle:" + mWebcamTexFront.videoRotationAngle);txtInfos.text = sb.ToString();}
}

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