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LocatableCamera.cs
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LocatableCamera.cs
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// Copyright (c) Microsoft Corporation.
// Licensed under the MIT License.
using System;
using System.Collections;
using System.Collections.Generic;
using System.IO;
using System.IO.Compression;
using System.Linq;
using UnityEngine;
using UnityEngine.Events;
using UnityEngine.Windows.WebCam;
namespace Microsoft.MixedReality.OpenXR.BasicSample
{
public class LocatableCamera : MonoBehaviour
{
[SerializeField]
private Shader textureShader = null;
[SerializeField]
private TextMesh text = null;
public int TimeOut = 1;
public bool autoCapture = false;
public bool displayPhoto = false;
public bool loadToTexture = true;
public string debugImagePath = "";
[Range(0, 100)]
public int qualityLevel = 100;
[HideInInspector]
public Vector3 position;
[HideInInspector]
public Quaternion rotation;
[HideInInspector]
public Quaternion rotation2;
[HideInInspector]
GameObject quad;
[HideInInspector]
public bool readyToCapture = false;
[HideInInspector]
public uint numPhotos = 0;
[HideInInspector]
public Texture2D targetTexture;
[HideInInspector]
public UnityEvent imageCapturedEvent;
[HideInInspector]
public Matrix4x4 cameraToWorldMatrix;
private PhotoCapture photoCaptureObject = null;
private Resolution cameraResolution = default(Resolution);
private Camera cam;
public static LocatableCamera instance;
private async void Awake()
{
instance = this;
}
private void Start()
{
cam = Camera.main;
imageCapturedEvent = new UnityEvent();
if (displayPhoto)
{
quad = GameObject.CreatePrimitive(PrimitiveType.Quad);
}
else
{
quad = new GameObject();
}
quad.transform.parent = transform;
#if !UNITY_EDITOR // INITIALIZE CAMERA ON MR DEVICE
initializePhotoCaptureCamera();
#endif
}
public void initializePhotoCaptureCamera()
{
var resolutions = PhotoCapture.SupportedResolutions;
if (resolutions == null || resolutions.Count() == 0)
{
if (text != null)
{
text.text = "Resolutions not available. Did you provide web cam access?";
}
return;
}
cameraResolution = resolutions.OrderByDescending((res) => res.width * res.height).First();
PhotoCapture.CreateAsync(false, OnPhotoCaptureCreated);
if (text != null)
{
text.text = "Starting camera...";
}
targetTexture = new Texture2D(cameraResolution.width, cameraResolution.height);
readyToCapture = true;
}
private void OnDestroy()
{
if (photoCaptureObject != null)
{
photoCaptureObject.StopPhotoModeAsync(OnPhotoCaptureStopped);
if (text != null)
{
text.text = "Stopping camera...";
}
}
}
private void OnPhotoCaptureCreated(PhotoCapture captureObject)
{
if (text != null)
{
text.text += "\nPhotoCapture created...";
}
photoCaptureObject = captureObject;
CameraParameters cameraParameters = new CameraParameters(WebCamMode.PhotoMode)
{
hologramOpacity = 0.0f,
cameraResolutionWidth = cameraResolution.width,
cameraResolutionHeight = cameraResolution.height,
pixelFormat = CapturePixelFormat.BGRA32
};
captureObject.StartPhotoModeAsync(cameraParameters, OnPhotoModeStarted);
}
private void OnPhotoModeStarted(PhotoCapture.PhotoCaptureResult result)
{
if (result.success)
{
if (text != null)
{
text.text = "Ready!\nPress the above button to take a picture.";
}
}
else
{
if (text != null)
{
text.text = "Unable to start photo mode!";
}
}
}
/// <summary>
/// Takes a photo and attempts to load it into the scene using its location data.
/// </summary>
public void TakePhoto()
{
#if UNITY_EDITOR // PHOTOCAPTURE IN EDITOR
targetTexture = new Texture2D(1, 1);
if (debugImagePath.Length > 0)
{
targetTexture.LoadImage(LoadPNG(debugImagePath));
}
else
{
virtualPhoto();
}
virtualLocatableCamera();
#else // CAPTURE IMAGE FROM MR DEVICE
if (!readyToCapture)
{
return;
}
readyToCapture = false;
if (text != null)
{
if (autoCapture)
{
text.text = "Auto Capture Enabled!...";
text.text += "\nTaking picture...";
}
else
{
text.text = "Taking picture...";
}
}
photoCaptureObject.TakePhotoAsync(OnPhotoCaptured);
#endif
}
private void OnPhotoCaptured(PhotoCapture.PhotoCaptureResult result, PhotoCaptureFrame photoCaptureFrame)
{
if (result.success)
{
if (text != null)
{
text.text = "\nTook picture!";
}
float ratio = cameraResolution.height / (float)cameraResolution.width;
quad.transform.localScale = new Vector3(1.0f, ratio, 1.0f) / 5.0f;
if (loadToTexture)
{
photoCaptureFrame.UploadImageDataToTexture(targetTexture);
}
if (photoCaptureFrame.hasLocationData)
{
photoCaptureFrame.TryGetCameraToWorldMatrix(out cameraToWorldMatrix);
Quaternion base2cam = Quaternion.Euler(90, 0, 0) * Quaternion.Euler(0, 90, 0);
position = cameraToWorldMatrix.MultiplyPoint(Vector3.zero);
rotation2 = Quaternion.LookRotation(-cameraToWorldMatrix.GetColumn(2), cameraToWorldMatrix.GetColumn(1));
rotation = rotation2 * base2cam;
transform.position = position;
//transform.rotation = rotation;
transform.rotation = rotation2;
photoCaptureFrame.TryGetProjectionMatrix(cam.nearClipPlane, cam.farClipPlane, out Matrix4x4 projectionMatrix);
targetTexture.wrapMode = TextureWrapMode.Clamp;
if (displayPhoto)
{
Renderer quadRenderer = quad.GetComponent<Renderer>();
quadRenderer.material = new Material(textureShader);
quadRenderer.sharedMaterial.SetTexture("_MainTex", targetTexture);
quadRenderer.sharedMaterial.SetMatrix("_WorldToCameraMatrix", cameraToWorldMatrix.inverse);
quadRenderer.sharedMaterial.SetMatrix("_CameraProjectionMatrix", projectionMatrix);
//quadRenderer.material.color = new Color(1f, 1f, 1f, 0.5f);
quad.transform.localPosition = new Vector3(0.25f, -0.25f, 0.5f);
}
imageCapturedEvent.Invoke();
if (text != null)
{
text.text += $"\nPosition: ({position.x}, {position.y}, {position.z})";
text.text += $"\nRotation: ({rotation.x}, {rotation.y}, {rotation.z}, {rotation.w})";
}
if (ClickGlobal.currentlyAnalyzing)
{
return; //ignore frame, still analyzing
}
List<byte> byteBuffer = new List<byte>();
byteBuffer.Clear();
//photoCaptureFrame.CopyRawImageDataIntoBuffer(byteBuffer);
photoCaptureFrame.UploadImageDataToTexture(targetTexture);
CameraProjection.instance.cameraToWorldMatrix = transform.localToWorldMatrix;
NetworkManager.instance.imageBytes = targetTexture.EncodeToJPG(qualityLevel); ;
ClickGlobal.startImageAnalysis = true;
}
else
{
if (text != null)
{
text.text += "\nNo location data :(";
}
}
}
else
{
if (text != null)
{
text.text = "Picture taking failed: " + result.hResult;
}
}
readyToCapture = true;
if (autoCapture)
{
StartCoroutine(Sleeper((float)TimeOut));
TakePhoto();
}
}
public void StartAutoCapture()
{
if (!autoCapture)
{
autoCapture = true;
TakePhoto();
}
else
{
autoCapture = false;
text.text += "\nAuto Capture Disabled!";
}
}
private void OnPhotoCaptureStopped(PhotoCapture.PhotoCaptureResult result)
{
if (text != null)
{
text.text = result.success ? "Photo mode stopped." : "Unable to stop photo mode.";
}
photoCaptureObject.Dispose();
photoCaptureObject = null;
}
private IEnumerator Sleeper(float seconds)
{
yield return new WaitForSeconds(seconds);
}
public static Byte[] Compress(Byte[] buffer)
{
Byte[] compressedByte;
using (MemoryStream ms = new MemoryStream())
{
using (DeflateStream ds = new DeflateStream(ms, CompressionMode.Compress))
{
ds.Write(buffer, 0, buffer.Length);
}
compressedByte = ms.ToArray();
}
return compressedByte;
}
public void virtualPhoto()
{
Rect rect = new Rect(0, 0, cam.pixelWidth, cam.pixelHeight);
RenderTexture renderTexture = new RenderTexture(cam.pixelWidth, cam.pixelHeight, 24);
targetTexture = new Texture2D(cam.pixelWidth, cam.pixelHeight, TextureFormat.RGBA32, false);
cam.targetTexture = renderTexture;
cam.nearClipPlane = 1000;
cam.Render();
cam.nearClipPlane = 0.1f;
RenderTexture.active = renderTexture;
targetTexture.ReadPixels(rect, 0, 0);
targetTexture.Apply();
//targetTexture = GetSquareCenteredTexture(targetTexture, (int)CameraProjection.instance.cameraWidth, (int)CameraProjection.instance.cameraHeight);
cam.targetTexture = null;
RenderTexture.active = null;
}
void virtualLocatableCamera()
{
Quaternion base2cam = Quaternion.Euler(90, 0, 0) * Quaternion.Euler(0, 90, 0);
cameraToWorldMatrix = cam.cameraToWorldMatrix;
position = cameraToWorldMatrix.MultiplyPoint(Vector3.zero);
rotation2 = Quaternion.LookRotation(-cameraToWorldMatrix.GetColumn(2), cameraToWorldMatrix.GetColumn(1));
rotation = rotation2 * base2cam;
transform.position = position;
//transform.rotation = rotation;
transform.rotation = rotation2;
targetTexture.wrapMode = TextureWrapMode.Clamp;
if (displayPhoto)
{
Renderer quadRenderer = quad.GetComponent<Renderer>();
quadRenderer.material = new Material(textureShader);
quadRenderer.sharedMaterial.SetTexture("_MainTex", targetTexture);
quad.transform.localPosition = new Vector3(0.25f, -0.25f, 0.5f);
}
if (text != null)
{
text.text += $"\nPosition: ({position.x}, {position.y}, {position.z})";
text.text += $"\nRotation: ({rotation.x}, {rotation.y}, {rotation.z}, {rotation.w})";
}
CameraProjection.instance.cameraToWorldMatrix = transform.localToWorldMatrix;
if (debugImagePath.Length > 0)
{
NetworkManager.instance.imageBytes = LoadPNG(debugImagePath);
}
ClickGlobal.startImageAnalysis = true;
imageCapturedEvent.Invoke();
if (autoCapture)
{
StartCoroutine(Sleeper((float)TimeOut));
TakePhoto();
}
}
public static byte[] LoadPNG(string filePath)
{
byte[] fileData = null;
if (File.Exists(filePath))
{
fileData = File.ReadAllBytes(filePath);
}
return fileData;
}
private Texture2D GetSquareCenteredTexture(Texture2D sourceTexture, int newWidth, int newHeight)
{
int xPos = (sourceTexture.width - newWidth) / 2;
int yPos = (sourceTexture.height - newHeight) / 2;
Color[] c = ((Texture2D)sourceTexture).GetPixels(xPos, yPos, newWidth, newHeight);
Texture2D croppedTexture = new Texture2D(newWidth, newHeight);
croppedTexture.SetPixels(c);
croppedTexture.Apply();
return croppedTexture;
}
}
}