MagicLeapのカメラ映像をリアルタイムに表示 #Unity #ML1

MLCameraPreview.cs

using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using UnityEngine.Events;
using UnityEngine.XR.MagicLeap;

[RequireComponent(typeof(PrivilegeRequester))]
public class MLCameraPreview : MonoBehaviour {

	Texture2D texture;
	
	private PrivilegeRequester _privilegeRequester;
	private bool _hasStarted = false;
	private bool _isCameraConnected = false;
	private bool _isPreview;
	
	void Awake()
	{
		_privilegeRequester = GetComponent<PrivilegeRequester>();
		_privilegeRequester.OnPrivilegesDone += HandlePrivilegesDone;
	}
	
	/// <summary>
	/// Responds to privilege requester result.
	/// </summary>
	/// <param name="result"/>
	private void HandlePrivilegesDone(MLResult result)
	{
		if (!result.IsOk)
		{
			if (result.Code == MLResultCode.PrivilegeDenied)
			{
				Instantiate(Resources.Load("PrivilegeDeniedError"));
			}

			Debug.LogErrorFormat("Error: VideoPreview failed to get all requested privileges, disabling script. Reason: {0}", result);
			enabled = false;
			return;
		}

		Debug.Log("Succeeded in requesting all privileges");
		
		if (!_hasStarted)
		{
			EnableMLCamera();
			_hasStarted = true;
		}
	}
	
	/// <summary>
	/// Connects the MLCamera component and instantiates a new instance
	/// if it was never created.
	/// </summary>
	private void EnableMLCamera()
	{
		MLResult result = MLCamera.Start();
		if (result.IsOk)
		{
			result = MLCamera.Connect();
			_isCameraConnected = true;
			StartPreview();
		}
		else
		{
			if (result.Code == MLResultCode.PrivilegeDenied)
			{
				Instantiate(Resources.Load("PrivilegeDeniedError"));
			}

			Debug.LogErrorFormat("Error: VideoPreview failed starting MLCamera, disabling script. Reason: {0}", result);
			enabled = false;
			return;
		}
	}
	
	/// <summary>
	/// Disconnects the MLCamera if it was ever created or connected.
	/// Also stops any video recording if active.
	/// </summary>
	private void DisableMLCamera()
	{
		if (MLCamera.IsStarted)
		{
			if (_isPreview)
			{
				StopPreview();
			}
			MLCamera.Disconnect();
			_isCameraConnected = false;
			MLCamera.Stop();
		}
	}
	
	public void StartPreview()
	{
		if(!_isPreview && MLCamera.IsStarted && _isCameraConnected)
		{
			texture = new Texture2D(1920, 1080, TextureFormat.RGBA32, false);

			MLResult result = MLCamera.StartPreview(texture);
			if (result.IsOk)
			{
				_isPreview = true;
				gameObject.GetComponent<Renderer> ().material.mainTexture = texture;				    
			}
			else
			{
				if (result.Code == MLResultCode.PrivilegeDenied)
				{
					Instantiate(Resources.Load("PrivilegeDeniedError"));
				}
				Debug.LogErrorFormat("Error: VideoPreview failed to start video preview for {0}. Reason: {1}", "", MLCamera.GetErrorCode().ToString());
			}
		}
		else
		{
			Debug.LogErrorFormat("Error: VideoPreview failed to start video preview");
		}
	}
	    
	public void StopPreview()
	{
		if (_isPreview)
		{
			MLResult result = MLCamera.StopVideoCapture();
			if (result.IsOk)
			{
				_isPreview = false;
			}
			else
			{
				if (result.Code == MLResultCode.PrivilegeDenied)
				{
					Instantiate(Resources.Load("PrivilegeDeniedError"));
				}

				Debug.LogErrorFormat("Error: VideoPreview failed to end video preview. Error Code: {0}", MLCamera.GetErrorCode().ToString());
			}
		}
		else
		{
			Debug.LogError("Error: VideoPreview failed to end video preview because the camera is not recording.");
		    
		}
	}
	
	
	void OnApplicationPause(bool pause)
	{
		if (pause)
		{
			if (_isCameraConnected)
			{
				DisableMLCamera();
			}

			_hasStarted = false;
		}
	}
	
	
}