491 lines
18 KiB
C#
491 lines
18 KiB
C#
using UnityEngine;
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using UnityEngine.EventSystems;
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using UnityEngine.SceneManagement;
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using UnityEngine.UI;
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using System.Collections;
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using System.Collections.Generic;
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using OpenCVForUnity.CoreModule;
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using OpenCVForUnity.ImgprocModule;
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using OpenCVForUnity.UnityUtils.Helper;
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using OpenCVForUnity.UnityUtils;
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namespace OpenCVForUnityExample
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{
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/// <summary>
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/// Physical Green Screen Example
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/// An example of creating a chromakey mask and compositing background image. (aka green-screen compositing)
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/// </summary>
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[RequireComponent(typeof(WebCamTextureToMatHelper))]
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public class PhysicalGreenScreenExample : MonoBehaviour
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{
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/// <summary>
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/// The background image texture.
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/// </summary>
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public Texture2D backGroundImageTexture;
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/// <summary>
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/// The radius range sliders.
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/// </summary>
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public Slider hRadiusRangeSlider;
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public Slider sRadiusRangeSlider;
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public Slider vRadiusRangeSlider;
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/// <summary>
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/// The spectrum image UI.
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/// </summary>
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public RawImage spectrumImage;
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/// <summary>
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/// The hsv mat.
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/// </summary>
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Mat hsvMat;
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/// <summary>
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/// The chroma key mask mat.
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/// </summary>
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Mat chromaKeyMaskMat;
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/// <summary>
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/// The background image mat.
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/// </summary>
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Mat backGroundImageMat;
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// Lower and Upper bounds for range checking in HSV color space
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Scalar lowerBound = new Scalar(0);
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Scalar upperBound = new Scalar(0);
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// Color radius for range checking in HSV color space
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Scalar colorRadiusRange = new Scalar(25, 50, 50, 0);
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/// <summary>
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/// The BLOB color hsv.
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/// </summary>
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Scalar blobColorHsv = new Scalar(99, 255, 177, 255);
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/// <summary>
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/// The spectrum mat.
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/// </summary>
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Mat spectrumMat;
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/// <summary>
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/// The spectrum texture.
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/// </summary>
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Texture2D spectrumTexture;
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/// <summary>
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/// The stored touch point.
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/// </summary>
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Point storedTouchPoint;
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/// <summary>
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/// The texture.
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/// </summary>
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Texture2D texture;
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/// <summary>
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/// The webcam texture to mat helper.
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/// </summary>
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WebCamTextureToMatHelper webCamTextureToMatHelper;
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/// <summary>
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/// The FPS monitor.
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/// </summary>
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FpsMonitor fpsMonitor;
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// Use this for initialization
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void Start()
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{
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fpsMonitor = GetComponent<FpsMonitor>();
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webCamTextureToMatHelper = gameObject.GetComponent<WebCamTextureToMatHelper>();
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#if UNITY_ANDROID && !UNITY_EDITOR
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// Avoids the front camera low light issue that occurs in only some Android devices (e.g. Google Pixel, Pixel2).
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webCamTextureToMatHelper.avoidAndroidFrontCameraLowLightIssue = true;
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#endif
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webCamTextureToMatHelper.Initialize();
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}
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/// <summary>
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/// Raises the web cam texture to mat helper initialized event.
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/// </summary>
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public void OnWebCamTextureToMatHelperInitialized()
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{
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Debug.Log("OnWebCamTextureToMatHelperInitialized");
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Mat webCamTextureMat = webCamTextureToMatHelper.GetMat();
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texture = new Texture2D(webCamTextureMat.cols(), webCamTextureMat.rows(), TextureFormat.RGBA32, false);
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Utils.matToTexture2D(webCamTextureMat, texture);
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gameObject.GetComponent<Renderer>().material.mainTexture = texture;
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gameObject.transform.localScale = new Vector3(webCamTextureMat.cols(), webCamTextureMat.rows(), 1);
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Debug.Log("Screen.width " + Screen.width + " Screen.height " + Screen.height + " Screen.orientation " + Screen.orientation);
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if (fpsMonitor != null)
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{
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fpsMonitor.Add("width", webCamTextureMat.width().ToString());
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fpsMonitor.Add("height", webCamTextureMat.height().ToString());
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fpsMonitor.Add("orientation", Screen.orientation.ToString());
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fpsMonitor.Add("blobColorHsv", "\n" + blobColorHsv.ToString());
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fpsMonitor.Add("colorRadiusRange", "\n" + colorRadiusRange.ToString());
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fpsMonitor.Toast("Touch the screen to specify the chromakey color.", 360);
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}
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float width = webCamTextureMat.width();
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float height = webCamTextureMat.height();
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float widthScale = (float)Screen.width / width;
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float heightScale = (float)Screen.height / height;
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if (widthScale < heightScale)
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{
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Camera.main.orthographicSize = (width * (float)Screen.height / (float)Screen.width) / 2;
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}
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else
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{
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Camera.main.orthographicSize = height / 2;
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}
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hsvMat = new Mat((int)height, (int)width, CvType.CV_8UC3);
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chromaKeyMaskMat = new Mat(hsvMat.size(), CvType.CV_8UC1);
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backGroundImageMat = new Mat(hsvMat.size(), CvType.CV_8UC4, new Scalar(39, 255, 86, 255));
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if (backGroundImageTexture != null)
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{
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using (Mat bgMat = new Mat(backGroundImageTexture.height, backGroundImageTexture.width, CvType.CV_8UC4))
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{
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Utils.texture2DToMat(backGroundImageTexture, bgMat);
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Imgproc.resize(bgMat, backGroundImageMat, backGroundImageMat.size());
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}
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}
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spectrumMat = new Mat(100, 100, CvType.CV_8UC4, new Scalar(255, 255, 255, 255));
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spectrumTexture = new Texture2D(spectrumMat.cols(), spectrumMat.rows(), TextureFormat.RGBA32, false);
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// Set default chromakey color.
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blobColorHsv = new Scalar(99, 255, 177, 255); // = R:39 G:255 B:86 (Green screen)
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SetHsvColor(blobColorHsv);
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}
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/// <summary>
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/// Raises the web cam texture to mat helper disposed event.
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/// </summary>
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public void OnWebCamTextureToMatHelperDisposed()
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{
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Debug.Log("OnWebCamTextureToMatHelperDisposed");
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if (hsvMat != null)
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{
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hsvMat.Dispose();
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hsvMat = null;
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}
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if (chromaKeyMaskMat != null)
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{
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chromaKeyMaskMat.Dispose();
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chromaKeyMaskMat = null;
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}
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if (backGroundImageMat != null)
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{
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backGroundImageMat.Dispose();
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backGroundImageMat = null;
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}
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if (spectrumMat != null)
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{
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spectrumMat.Dispose();
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spectrumMat = null;
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}
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if (texture != null)
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{
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Texture2D.Destroy(texture);
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texture = null;
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}
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if (spectrumTexture != null)
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{
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Texture2D.Destroy(spectrumTexture);
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texture = null;
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}
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}
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/// <summary>
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/// Raises the web cam texture to mat helper error occurred event.
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/// </summary>
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/// <param name="errorCode">Error code.</param>
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public void OnWebCamTextureToMatHelperErrorOccurred(WebCamTextureToMatHelper.ErrorCode errorCode)
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{
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Debug.Log("OnWebCamTextureToMatHelperErrorOccurred " + errorCode);
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}
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// Update is called once per frame
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void Update()
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{
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#if ((UNITY_ANDROID || UNITY_IOS) && !UNITY_EDITOR)
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//Touch
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int touchCount = Input.touchCount;
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if (touchCount == 1)
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{
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Touch t = Input.GetTouch (0);
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if(t.phase == TouchPhase.Ended && !EventSystem.current.IsPointerOverGameObject (t.fingerId)) {
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storedTouchPoint = new Point (t.position.x, t.position.y);
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//Debug.Log ("touch X " + t.position.x);
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//Debug.Log ("touch Y " + t.position.y);
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}
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}
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#else
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//Mouse
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if (Input.GetMouseButtonUp(0) && !EventSystem.current.IsPointerOverGameObject())
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{
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storedTouchPoint = new Point(Input.mousePosition.x, Input.mousePosition.y);
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//Debug.Log ("mouse X " + Input.mousePosition.x);
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//Debug.Log ("mouse Y " + Input.mousePosition.y);
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}
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#endif
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if (webCamTextureToMatHelper.IsPlaying() && webCamTextureToMatHelper.DidUpdateThisFrame())
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{
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Mat rgbaMat = webCamTextureToMatHelper.GetMat();
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if (storedTouchPoint != null)
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{
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ConvertScreenPointToTexturePoint(storedTouchPoint, storedTouchPoint, gameObject, rgbaMat.cols(), rgbaMat.rows());
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OnTouch(rgbaMat, storedTouchPoint);
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storedTouchPoint = null;
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}
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// Convert the color space from RGBA to HSV_FULL.
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// HSV_FULL is HSV with H elements scaled from 0 to 255.
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Imgproc.cvtColor(rgbaMat, hsvMat, Imgproc.COLOR_RGB2HSV_FULL);
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// Create a chromakey mask from extracting the lower and upper limits range of values in the HSV color space.
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Core.inRange(hsvMat, lowerBound, upperBound, chromaKeyMaskMat);
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// Compose the background image.
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backGroundImageMat.copyTo(rgbaMat, chromaKeyMaskMat);
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Utils.matToTexture2D(rgbaMat, texture);
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}
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}
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private void OnTouch(Mat img, Point touchPoint)
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{
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int cols = img.cols();
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int rows = img.rows();
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int x = (int)touchPoint.x;
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int y = (int)touchPoint.y;
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//Debug.Log ("Touch image coordinates: (" + x + ", " + y + ")");
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if ((x < 0) || (y < 0) || (x > cols) || (y > rows))
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return;
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OpenCVForUnity.CoreModule.Rect touchedRect = new OpenCVForUnity.CoreModule.Rect();
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touchedRect.x = (x > 5) ? x - 5 : 0;
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touchedRect.y = (y > 5) ? y - 5 : 0;
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touchedRect.width = (x + 5 < cols) ? x + 5 - touchedRect.x : cols - touchedRect.x;
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touchedRect.height = (y + 5 < rows) ? y + 5 - touchedRect.y : rows - touchedRect.y;
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using (Mat touchedRegionRgba = img.submat(touchedRect))
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using (Mat touchedRegionHsv = new Mat())
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{
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Imgproc.cvtColor(touchedRegionRgba, touchedRegionHsv, Imgproc.COLOR_RGB2HSV_FULL);
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// Calculate average color of touched region.
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blobColorHsv = Core.sumElems(touchedRegionHsv);
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int pointCount = touchedRect.width * touchedRect.height;
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for (int i = 0; i < blobColorHsv.val.Length; i++)
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blobColorHsv.val[i] /= pointCount;
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SetHsvColor(blobColorHsv);
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}
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}
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public void SetHsvColor(Scalar hsvColor)
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{
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// Calculate lower and Upper bounds.
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double minH = (hsvColor.val[0] >= colorRadiusRange.val[0]) ? hsvColor.val[0] - colorRadiusRange.val[0] : 0;
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double maxH = (hsvColor.val[0] + colorRadiusRange.val[0] <= 255) ? hsvColor.val[0] + colorRadiusRange.val[0] : 255;
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lowerBound.val[0] = minH;
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upperBound.val[0] = maxH;
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lowerBound.val[1] = hsvColor.val[1] - colorRadiusRange.val[1];
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lowerBound.val[1] = (lowerBound.val[1] >= 0) ? lowerBound.val[1] : 0;
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upperBound.val[1] = hsvColor.val[1] + colorRadiusRange.val[1];
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upperBound.val[1] = (upperBound.val[1] <= 255) ? upperBound.val[1] : 255;
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lowerBound.val[2] = hsvColor.val[2] - colorRadiusRange.val[2];
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lowerBound.val[2] = (lowerBound.val[2] >= 0) ? lowerBound.val[2] : 0;
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upperBound.val[2] = hsvColor.val[2] + colorRadiusRange.val[2];
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upperBound.val[2] = (upperBound.val[2] <= 255) ? upperBound.val[2] : 255;
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lowerBound.val[3] = 0;
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upperBound.val[3] = 255;
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// Generate a spectrum chart.
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using (Mat spectrumHsv = new Mat((int)(upperBound.val[1] - lowerBound.val[1]), (int)(maxH - minH), CvType.CV_8UC3))
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using (Mat spectrumRgba = new Mat((int)(upperBound.val[1] - lowerBound.val[1]), (int)(maxH - minH), CvType.CV_8UC4))
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{
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for (int i = 0; i < upperBound.val[1] - lowerBound.val[1]; i++)
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{
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for (int j = 0; j < maxH - minH; j++)
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{
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byte[] tmp = { (byte)(minH + j), (byte)(lowerBound.val[1] + i), (byte)hsvColor.val[2] };
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spectrumHsv.put(i, j, tmp);
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}
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}
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Imgproc.cvtColor(spectrumHsv, spectrumRgba, Imgproc.COLOR_HSV2RGB_FULL, 4);
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Imgproc.resize(spectrumRgba, spectrumMat, spectrumMat.size());
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Utils.matToTexture2D(spectrumMat, spectrumTexture);
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spectrumImage.texture = spectrumTexture;
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}
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if (fpsMonitor != null)
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{
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fpsMonitor.Add("blobColorHsv", "\n" + blobColorHsv.ToString());
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fpsMonitor.Add("colorRadiusRange", "\n" + colorRadiusRange.ToString());
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}
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//Debug.Log("blobColorHsv: " + blobColorHsv);
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//Debug.Log("lowerBound: " + lowerBound);
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//Debug.Log("upperBound: " + upperBound);
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//Debug.Log("blobColorRgba: " + ConverScalarHsv2Rgba(blobColorHsv));
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}
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private Scalar ConverScalarHsv2Rgba(Scalar hsvColor)
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{
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Scalar rgbaColor;
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using (Mat pointMatRgba = new Mat())
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using (Mat pointMatHsv = new Mat(1, 1, CvType.CV_8UC3, hsvColor))
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{
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Imgproc.cvtColor(pointMatHsv, pointMatRgba, Imgproc.COLOR_HSV2RGB_FULL, 4);
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rgbaColor = new Scalar(pointMatRgba.get(0, 0));
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}
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return rgbaColor;
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}
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/// <summary>
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/// Converts the screen point to texture point.
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/// </summary>
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/// <param name="screenPoint">Screen point.</param>
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/// <param name="dstPoint">Dst point.</param>
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/// <param name="texturQuad">Texture quad.</param>
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/// <param name="textureWidth">Texture width.</param>
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/// <param name="textureHeight">Texture height.</param>
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/// <param name="camera">Camera.</param>
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private void ConvertScreenPointToTexturePoint(Point screenPoint, Point dstPoint, GameObject textureQuad, int textureWidth = -1, int textureHeight = -1, Camera camera = null)
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{
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if (textureWidth < 0 || textureHeight < 0)
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{
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Renderer r = textureQuad.GetComponent<Renderer>();
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if (r != null && r.material != null && r.material.mainTexture != null)
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{
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textureWidth = r.material.mainTexture.width;
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textureHeight = r.material.mainTexture.height;
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}
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else
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{
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textureWidth = (int)textureQuad.transform.localScale.x;
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textureHeight = (int)textureQuad.transform.localScale.y;
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}
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}
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if (camera == null)
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camera = Camera.main;
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Vector3 quadPosition = textureQuad.transform.localPosition;
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Vector3 quadScale = textureQuad.transform.localScale;
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Vector2 tl = camera.WorldToScreenPoint(new Vector3(quadPosition.x - quadScale.x / 2, quadPosition.y + quadScale.y / 2, quadPosition.z));
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Vector2 tr = camera.WorldToScreenPoint(new Vector3(quadPosition.x + quadScale.x / 2, quadPosition.y + quadScale.y / 2, quadPosition.z));
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Vector2 br = camera.WorldToScreenPoint(new Vector3(quadPosition.x + quadScale.x / 2, quadPosition.y - quadScale.y / 2, quadPosition.z));
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Vector2 bl = camera.WorldToScreenPoint(new Vector3(quadPosition.x - quadScale.x / 2, quadPosition.y - quadScale.y / 2, quadPosition.z));
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using (Mat srcRectMat = new Mat(4, 1, CvType.CV_32FC2))
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using (Mat dstRectMat = new Mat(4, 1, CvType.CV_32FC2))
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{
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srcRectMat.put(0, 0, tl.x, tl.y, tr.x, tr.y, br.x, br.y, bl.x, bl.y);
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dstRectMat.put(0, 0, 0, 0, quadScale.x, 0, quadScale.x, quadScale.y, 0, quadScale.y);
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using (Mat perspectiveTransform = Imgproc.getPerspectiveTransform(srcRectMat, dstRectMat))
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using (MatOfPoint2f srcPointMat = new MatOfPoint2f(screenPoint))
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using (MatOfPoint2f dstPointMat = new MatOfPoint2f())
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{
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Core.perspectiveTransform(srcPointMat, dstPointMat, perspectiveTransform);
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dstPoint.x = dstPointMat.get(0, 0)[0] * textureWidth / quadScale.x;
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dstPoint.y = dstPointMat.get(0, 0)[1] * textureHeight / quadScale.y;
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}
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}
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}
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/// <summary>
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/// Raises the destroy event.
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/// </summary>
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void OnDestroy()
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{
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webCamTextureToMatHelper.Dispose();
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}
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/// <summary>
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/// Raises the back button click event.
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/// </summary>
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public void OnBackButtonClick()
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{
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SceneManager.LoadScene("OpenCVForUnityExample");
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}
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/// <summary>
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/// Raises the play button click event.
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/// </summary>
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public void OnPlayButtonClick()
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{
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webCamTextureToMatHelper.Play();
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}
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/// <summary>
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/// Raises the pause button click event.
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/// </summary>
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public void OnPauseButtonClick()
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{
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webCamTextureToMatHelper.Pause();
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}
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/// <summary>
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/// Raises the stop button click event.
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/// </summary>
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public void OnStopButtonClick()
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{
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webCamTextureToMatHelper.Stop();
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}
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/// <summary>
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/// Raises the change camera button click event.
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/// </summary>
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public void OnChangeCameraButtonClick()
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{
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webCamTextureToMatHelper.requestedIsFrontFacing = !webCamTextureToMatHelper.requestedIsFrontFacing;
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}
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/// <summary>
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/// Raises the radius range slider value changed event.
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/// </summary>
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public void OnRadiusRangeSliderValueChanged()
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{
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colorRadiusRange = new Scalar(hRadiusRangeSlider.value, sRadiusRangeSlider.value, vRadiusRangeSlider.value, 255);
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SetHsvColor(blobColorHsv);
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}
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}
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} |