【ネタ枠】HoloLensでキャプチャすると何かが映り込む

完全にネタ枠の記事です
(※　HoloToolKitを使用しています。別になくてもできる)

HoloLensでAirTapするとキャプチャができるだけのスクリプトです。(保存機能は特になし)

ただし何かが写り込む

f:id:haikage1755:20170730163946p:plain

using UnityEngine;
using System.Linq;
using UnityEngine.VR.WSA.WebCam;
using HoloToolkit.Unity.InputModule;

public class CustomPhotoCapture : MonoBehaviour, IInputClickHandler
{
    public Texture2D tex2; //Texture u wanna add
    public Vector2 texPosition = Vector2.zero;

    PhotoCapture photoCaptureObject = null;
    Texture2D targetTexture = null;    // Use this for initialization
    CameraParameters cameraParameters;

    void Start()
    {
        InputManager.Instance.AddGlobalListener(gameObject);
        OnCreatePhotoObj();
    }

    public void OnTakePhoto()
    {
        if(photoCaptureObject == null)
        {
            OnCreatePhotoObj();
            return;
        }

        photoCaptureObject.StartPhotoModeAsync(cameraParameters, delegate (PhotoCapture.PhotoCaptureResult result) {
            photoCaptureObject.TakePhotoAsync(OnCapturedPhotoToMemory);
        });
    }

    void OnCapturedPhotoToMemory(PhotoCapture.PhotoCaptureResult result, PhotoCaptureFrame photoCaptureFrame)
    {
        // Copy the raw image data into our target texture
        photoCaptureFrame.UploadImageDataToTexture(targetTexture);        // Create a gameobject that we can apply our texture to
        targetTexture = MergeTexture(targetTexture, tex2);
        GameObject quad = GameObject.CreatePrimitive(PrimitiveType.Quad);
        quad.transform.transform.position = Camera.main.transform.position + Camera.main.transform.forward * 5f;
        quad.transform.LookAt(Camera.main.transform);
        quad.transform.eulerAngles += new Vector3(0, 180, 0);
        quad.transform.localScale = new Vector3(1.98f, 1.2f, 1);
        Renderer quadRenderer = quad.GetComponent<Renderer>() as Renderer;
        quadRenderer.material = new Material(Shader.Find("Unlit/Texture")); quad.transform.parent = this.transform;
        quadRenderer.material.SetTexture("_MainTex", targetTexture);        // Deactivate our camera

        photoCaptureObject.StopPhotoModeAsync(OnStoppedPhotoMode);   
    }

    void OnCreatePhotoObj()
    {
        Resolution cameraResolution = PhotoCapture.SupportedResolutions.OrderByDescending((res) => res.width * res.height).First();
        targetTexture = new Texture2D(cameraResolution.width, cameraResolution.height);        // Create a PhotoCapture object
        PhotoCapture.CreateAsync(false, delegate (PhotoCapture captureObject) {
            photoCaptureObject = captureObject;
            cameraParameters = new CameraParameters();
            cameraParameters.hologramOpacity = 0.0f;
            cameraParameters.cameraResolutionWidth = cameraResolution.width;
            cameraParameters.cameraResolutionHeight = cameraResolution.height;
            cameraParameters.pixelFormat = CapturePixelFormat.BGRA32;                // Activate the camera
        });
    }

    void OnStoppedPhotoMode(PhotoCapture.PhotoCaptureResult result)
    {
        // Shutdown our photo capture resource
        photoCaptureObject.Dispose();
        photoCaptureObject = null;
    }

    public Texture2D MergeTexture(Texture2D main, Texture2D addedTex) 
    {
        var startX = (int)texPosition.x;
        var startY = (int)texPosition.y;

        for (var x = startX; x < main.width; x++)
        {
            for(var y = startY; y < main.height; y++)
            {
                Color mainColor = main.GetPixel(x,y);
                Color addedColor = addedTex.GetPixel(x - startX, y - startY);

                Color final_color = Color.Lerp(mainColor, addedColor, addedColor.a / 1.0f);

                main.SetPixel(x,y,final_color);
            }            
        }

        main.Apply();
        return main;
    }

    public void OnInputClicked(InputClickedEventData eventData)
    {
        if (!GazeManager.Instance.HitObject)
        {
            OnTakePhoto();
        }
    }
}