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thirdparty/jeeliz/JeelizResizer.js

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+/*
+This helper can help for:
+* adjusting the canvas resolution to the good size -> this is crucial to
+optimize the code because if the canvas is too large,
+there are too much pixels to compute => it will be slow
+
+* to mirror horizontally or not the canvas -> if the front camera is used we
+need it flipped (mirror effect), while if the rear camera is used we need it not flipped
+
+* to get the best camera resolution (either above the canvas resolution or closer)
+to balance between performance and quality
+*/ 
+"use strict";
+
+const JeelizResizer = (function(){
+  // private vars:
+  let _domCanvas = null,
+      _whCanvasPx = null,
+      _isApplyCSS = false,
+      _resizeAttemptsCounter = 0,
+      _overSamplingFactor = 1,
+      _isFullScreen = false,
+      _timerFullScreen = null,
+      _callbackResize = null,
+      _isInvFullscreenWH = false;
+
+  const _cameraResolutions = [ // all resolutions should be in landscape mode
+    [640,480],
+    [768,480],
+    [800,600],
+    [960,640],
+    [960,720],
+    [1024,768],
+    [1280,720],
+    [1920, 1080]
+  ];
+  
+  //private functions
+  function add_CSStransform(domElement, CSS){
+    const CSStransform = domElement.style.transform;
+    if (CSStransform.indexOf(CSS) !== -1) return;
+    domElement.style.transform = CSS + ' ' + CSStransform;
+  }
+
+  // Compute overlap between 2 rectangles A and B
+  // characterized by their width and their height in pixels
+  // the rectangles are centered
+  // return the ratio (pixels overlaped)/(total pixels)
+  function compute_overlap(whA, whB){ 
+    const aspectRatioA = whA[0] / whA[1];
+    const aspectRatioB = whB[0] / whB[1]; //higher aspectRatio -> more landscape
+    
+    var whLandscape, whPortrait;
+    if (aspectRatioA > aspectRatioB){ 
+      whLandscape = whA, whPortrait = whB;
+    } else {
+      whLandscape = whB, whPortrait = whA;
+    }
+
+    // The overlapped area will be always a rectangle
+    const areaOverlap = Math.min(whLandscape[0], whPortrait[0]) * Math.min(whLandscape[1], whPortrait[1]);
+    
+    var areaTotal;
+    if (whLandscape[0]>=whPortrait[0] && whLandscape[1]>=whPortrait[1]){ //union is a rectangle
+      areaTotal = whLandscape[0]*whLandscape[1];
+    } else if (whPortrait[0]>whLandscape[0] && whPortrait[1]>whLandscape[1]){ //union is a rectangle
+      areaTotal = whPortrait[0]*whPortrait[1];
+    } else { //union is a cross
+      areaTotal = whLandscape[0]*whLandscape[1];
+      areaTotal += (whPortrait[1]-whLandscape[1])*whPortrait[0];
+    }
+
+    return areaOverlap / areaTotal;
+  } //end compute_overlap()
+
+  function update_sizeCanvas(){
+    const domRect = _domCanvas.getBoundingClientRect();
+    apply_sizeCanvas(domRect.width, domRect.height);
+  }
+
+  function apply_sizeCanvas(width, height){
+    _whCanvasPx = [
+      Math.round(_overSamplingFactor * width),
+      Math.round(_overSamplingFactor * height)
+    ];
+
+    // set canvas resolution:
+    _domCanvas.setAttribute('width',  _whCanvasPx[0]);
+    _domCanvas.setAttribute('height', _whCanvasPx[1]);
+
+    // canvas display size:
+    if (_isApplyCSS){
+      _domCanvas.style.width = width.toString() + 'px';
+      _domCanvas.style.height = height.toString() + 'px';
+    }
+  }
+
+  function on_windowResize(){
+    // avoid to resize too often using a timer
+    // (it can create weird bug with some browsers)
+    if (_timerFullScreen){
+      clearTimeout(_timerFullScreen);
+    }
+    _timerFullScreen = setTimeout(resize_fullScreen, 50);
+  }
+
+  function resize_canvasToFullScreen(){
+    const wh = [window['innerWidth'], window['innerHeight']];
+    if (_isInvFullscreenWH){
+      wh.reverse();
+    }
+    apply_sizeCanvas(wh[0], wh[1]);
+  }
+
+  function resize_fullScreen(){
+    resize_canvasToFullScreen();
+    JEELIZFACEFILTER.resize();
+    _timerFullScreen = null;
+    if (_callbackResize) {
+      _callbackResize();
+    }
+  }
+
+  // public methods:
+  const that = {
+    // return true or false if the device is in portrait or landscape mode
+    // see https://stackoverflow.com/questions/4917664/detect-viewport-orientation-if-orientation-is-portrait-display-alert-message-ad
+    is_portrait: function(){
+      try{
+        if (window['matchMedia']("(orientation: portrait)")['matches']){
+          return true;
+        } else {
+          return false;
+        }
+      } catch(e){
+        return (window['innerHeight'] > window['innerWidth']);
+      }
+    },
+
+    // check whether the user is using IOS or not
+    // see https://stackoverflow.com/questions/9038625/detect-if-device-is-ios
+    check_isIOS: function(){
+      const isIOS = /iPad|iPhone|iPod/.test(navigator['userAgent']) && !window['MSStream'];
+      return isIOS;
+    },
+
+    // Should be called only if IOS was detected
+    // see https://stackoverflow.com/questions/8348139/detect-ios-version-less-than-5-with-javascript
+    get_IOSVersion: function(){ 
+      const v = (navigator['appVersion']).match(/OS (\d+)_(\d+)_?(\d+)?/);
+      return (v.length > 2) ? [parseInt(v[1], 10), parseInt(v[2], 10), parseInt(v[3] || 0, 10)] : [0, 0, 0];
+    },
+
+    // Check whether the user is using Android or not
+    // see https://stackoverflow.com/questions/6031412/detect-android-phone-via-javascript-jquery
+    check_isAndroid: function(){
+      const ua = navigator['userAgent'].toLowerCase();
+      return (ua.indexOf('android') !== -1);
+    },
+
+    // Should be called only if Android was detected
+    // see https://stackoverflow.com/questions/7184573/pick-up-the-android-version-in-the-browser-by-javascript
+    get_androidVersion: function(){
+      const ua = navigator['userAgent'].toLowerCase(); 
+      const match = ua.match(/android\s([0-9\.]*)/i);
+      if (!match || match.length<2){
+        return [0,0,0];
+      }
+      const v = match[1].split('.');
+      return [
+        parseInt(v[0], 10),
+        parseInt(v[1], 10),
+        parseInt(v[2] || 0, 10)
+      ];
+    },
+
+    // to get a video of 480x640 (480 width and 640 height)
+    // with a mobile phone in portrait mode, the default implementation
+    // should require a 480x640 video (Chrome, Firefox)
+    // but bad implementations needs to always request landscape resolutions (so 640x480)
+    // see https://github.com/jeeliz/jeelizFaceFilter/issues/144
+    require_flipVideoWHIfPortrait: function(){
+      // disabled because of https://github.com/jeeliz/jeelizFaceFilter/issues/144
+      // seems quite a mess though...
+      
+      /* if (that.check_isIOS()){
+        //the user is using IOS
+        const version = that.get_IOSVersion();
+        if (version[0] >= 13){
+          if (version[1] <= 1 // IOS 13.0.X
+              || (version[1] === 1 && version[2] < 3)){ // IOS 13.1.X with X<3
+            return false;
+          }
+        }
+      }
+
+      if (that.check_isAndroid()){
+        const version = that.get_androidVersion();
+        if (version[0] >= 9){ // Android 9+
+          return false;
+        }
+      } */
+
+      // normal implementation
+      return false;
+    },
+
+    // size canvas to the right resolution
+    // should be called after the page loading
+    // when the canvas has already the right size
+    // options:
+    //  - <string> canvasId: id of the canvas
+    //  - <HTMLCanvasElement> canvas: if canvasId is not provided
+    //  - <function> callback: function to launch if there was an error or not
+    //  - <float> overSamplingFactor: facultative. If 1, same resolution than displayed size (default). 
+    //    If 2, resolution twice higher than real size
+    //  - <boolean> CSSFlipX: if we should flip the canvas or not. Default: false
+    //  - <boolean> isFullScreen: if we should set the canvas fullscreen. Default: false
+    //  - <function> onResize: function called when the window is resized. Only enabled if isFullScreen = true
+    //  - <boolean> isInvWH: if we should invert width and height for fullscreen mode only. default = false
+    //  - <boolean> isApplyCSS: if we should also apply canvas dimensions as CSS. default = false
+    size_canvas: function(optionsArg){
+      const options = Object.assign({
+        canvasId: 'undefinedCanvasId',
+        canvas: null,
+        overSamplingFactor: window.devicePixelRatio || 1,
+
+        isFullScreen: false,
+        isInvWH: false,
+        CSSFlipX: false,
+        isApplyCSS: false,
+        
+        onResize: null,
+        callback: function(){}
+      }, optionsArg);
+
+      _domCanvas = (options.canvas) ? options.canvas : document.getElementById(options.canvasId);
+      _isFullScreen = options.isFullScreen;
+      _isInvFullscreenWH = options.isInvWH;
+      _isApplyCSS = options.isApplyCSS;
+      _overSamplingFactor = options.overSamplingFactor;
+
+      if (_isFullScreen){
+        // we are in fullscreen mode
+        _callbackResize = options.onResize;
+        
+        resize_canvasToFullScreen();
+        window.addEventListener('resize', on_windowResize, false);
+        window.addEventListener('orientationchange', on_windowResize, false);
+        
+      } else { // not fullscreen mode
+
+        // get display size of the canvas:
+        const domRect = _domCanvas.getBoundingClientRect();
+        if (domRect.width===0 || domRect.height===0){
+          console.log('WARNING in JeelizResize.size_canvas(): the canvas has its width or its height null, Retry a bit later...');
+          if (++_resizeAttemptsCounter > 20){
+            options.callback('CANNOT_RESIZECANVAS');
+            return;
+          }
+          setTimeout(that.size_canvas.bind(null, options), 50);
+          return;
+        }
+
+        // do resize canvas:
+        _resizeAttemptsCounter = 0;        
+        update_sizeCanvas();
+      }
+
+      // flip horizontally if required:
+      if (options.CSSFlipX){
+        add_CSStransform(_domCanvas, 'rotateY(180deg)');
+      }
+
+      // compute the best camera resolutions:
+      const allResolutions = _cameraResolutions.map(function(x){
+        return x.slice(0)
+      });
+
+      // if we are in portrait mode, the camera is also in portrait mode
+      // so we need to set all resolutions to portrait mode
+      if (that.is_portrait() && that.require_flipVideoWHIfPortrait()){
+        allResolutions.forEach(function(wh){
+          wh.reverse();
+        });
+      }
+
+      // sort camera resolutions from the best to the worst:
+      allResolutions.sort(function(resA, resB){
+        return compute_overlap(resB, _whCanvasPx) - compute_overlap(resA, _whCanvasPx);        
+      });
+
+      // pick the best camera resolution:
+      const bestCameraResolution = {
+        'idealWidth':  allResolutions[0][0],
+        'idealHeight': allResolutions[0][1]
+      };
+
+      console.log('INFO in JeelizResizer: bestCameraResolution =', bestCameraResolution);
+
+      // launch the callback function after a small interval to let it
+      // some time to size:
+      setTimeout(options.callback.bind(null, false, bestCameraResolution), 1);
+    }, //end size_canvas()
+
+    // Should be called if the canvas is resized to update the canvas resolution:
+    resize_canvas: function(){
+      if (_isFullScreen){
+        resize_canvasToFullScreen()        
+      } else {
+        update_sizeCanvas();
+      }
+    },
+
+    get_canvasSize: function(){
+      return _whCanvasPx;
+    }
+  }; //end that
+  return that;
+})();
+
+// Export ES6 module:
+try {
+  module.exports = JeelizResizer;
+} catch(e){
+  console.log('JeelizResizer ES6 Module not exported');
+  window.JeelizResizer = JeelizResizer;
+}

thirdparty/jeeliz/JeelizThreeHelper.js

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+/*
+  Helper for Three.js
+*/
+
+const JeelizThreeHelper = (function(){
+  // internal settings:
+  const _settings = {
+    rotationOffsetX: 0.0, // negative -> look upper. in radians
+    pivotOffsetYZ: [0.2, 0.6],// YZ of the distance between the center of the cube and the pivot
+    
+    detectionThreshold: 0.8, // sensibility, between 0 and 1. Less -> more sensitive
+    detectionHysteresis: 0.02,
+
+    //tweakMoveYRotateX: 0,//0.5, // tweak value: move detection window along Y axis when rotate the face around X (look up <-> down)
+    
+    cameraMinVideoDimFov: 35 // Field of View for the smallest dimension of the video in degrees
+  };
+
+  // private vars:
+  let _threeRenderer = null,
+      _threeScene = null,
+      _threeVideoMesh = null,
+      _threeVideoTexture = null,
+      _threeTranslation = null;
+
+  let _maxFaces = -1,
+      _isMultiFaces = false,
+      _detectCallback = null,
+      _isVideoTextureReady = false,
+      _isSeparateThreeCanvas = false,
+      _faceFilterCv = null,
+      _videoElement = null,
+      _isDetected = false,
+      _scaleW = 1,
+      _canvasAspectRatio = -1;
+
+  const _threeCompositeObjects = [];
+    
+  let _gl = null,
+      _glVideoTexture = null,
+      _glShpCopyCut = null,
+      _glShpCopyCutVideoMatUniformPointer = null;
+
+  let _videoTransformMat2 = null;
+
+  // private funcs:
+  function destroy(){
+    _isVideoTextureReady = false;
+    _threeCompositeObjects.splice(0);
+    if (_threeVideoTexture){
+      _threeVideoTexture.dispose();
+      _threeVideoTexture = null;
+    }
+  }
+
+  function create_threeCompositeObjects(){
+    for (let i=0; i<_maxFaces; ++i){
+      // COMPOSITE OBJECT WHICH WILL TRACK A DETECTED FACE
+      const threeCompositeObject = new THREE.Object3D();
+      threeCompositeObject.frustumCulled = false;
+      threeCompositeObject.visible = false;
+
+      _threeCompositeObjects.push(threeCompositeObject);
+      _threeScene.add(threeCompositeObject);
+    }
+  }
+
+  function create_videoScreen(){
+    const videoScreenVertexShaderSource = "attribute vec2 position;\n\
+        uniform mat2 videoTransformMat2;\n\
+        varying vec2 vUV;\n\
+        void main(void){\n\
+          gl_Position = vec4(position, 0., 1.);\n\
+          vUV = 0.5 + videoTransformMat2 * position;\n\
+        }";
+    const videoScreenFragmentShaderSource = "precision lowp float;\n\
+        uniform sampler2D samplerVideo;\n\
+        varying vec2 vUV;\n\
+        void main(void){\n\
+          gl_FragColor = texture2D(samplerVideo, vUV);\n\
+        }";
+
+    if (_isSeparateThreeCanvas){
+      const compile_shader = function(source, type, typeString) {
+        const glShader = _gl.createShader(type);
+        _gl.shaderSource(glShader, source);
+        _gl.compileShader(glShader);
+        if (!_gl.getShaderParameter(glShader, _gl.COMPILE_STATUS)) {
+          alert("ERROR IN " + typeString + " SHADER: " + _gl.getShaderInfoLog(glShader));
+          return null;
+        }
+        return glShader;
+      };
+
+      const glShaderVertex =   compile_shader(videoScreenVertexShaderSource, _gl.VERTEX_SHADER, 'VERTEX');
+      const glShaderFragment = compile_shader(videoScreenFragmentShaderSource, _gl.FRAGMENT_SHADER, 'FRAGMENT');
+
+      _glShpCopyCut = _gl.createProgram();
+      _gl.attachShader(_glShpCopyCut, glShaderVertex);
+      _gl.attachShader(_glShpCopyCut, glShaderFragment);
+
+      _gl.linkProgram(_glShpCopyCut);
+      const samplerVideo = _gl.getUniformLocation(_glShpCopyCut, 'samplerVideo');
+      _glShpCopyCutVideoMatUniformPointer = _gl.getUniformLocation(_glShpCopyCut, 'videoTransformMat2');
+      
+      return;
+    }
+
+    // init video texture with red:
+    _threeVideoTexture = new THREE.DataTexture( new Uint8Array([255,0,0]), 1, 1, THREE.RGBFormat);
+    _threeVideoTexture.needsUpdate = true;
+
+    // CREATE THE VIDEO BACKGROUND:
+    const videoMaterial = new THREE.RawShaderMaterial({
+      depthWrite: false,
+      depthTest: false,
+      vertexShader: videoScreenVertexShaderSource,
+      fragmentShader: videoScreenFragmentShaderSource,
+      uniforms:{
+        samplerVideo: {value: _threeVideoTexture},
+        videoTransformMat2: {
+          value: _videoTransformMat2
+        }
+      }
+    });
+
+    const videoGeometry = new THREE.BufferGeometry()
+    const videoScreenCorners = new Float32Array([-1,-1,   1,-1,   1,1,   -1,1]);
+    videoGeometry.addAttribute( 'position', new THREE.BufferAttribute( videoScreenCorners, 2 ) );
+    videoGeometry.setIndex(new THREE.BufferAttribute(new Uint16Array([0,1,2, 0,2,3]), 1));
+    _threeVideoMesh = new THREE.Mesh(videoGeometry, videoMaterial);
+    that.apply_videoTexture(_threeVideoMesh);
+    _threeVideoMesh.renderOrder = -1000; // render first
+    _threeVideoMesh.frustumCulled = false;
+    _threeScene.add(_threeVideoMesh);
+  } //end create_videoScreen()
+
+  function detect(detectState){
+    _threeCompositeObjects.forEach(function(threeCompositeObject, i){
+      _isDetected = threeCompositeObject.visible;
+      const ds = detectState[i];
+      if (_isDetected && ds.detected < _settings.detectionThreshold-_settings.detectionHysteresis){
+        
+        // DETECTION LOST
+        if (_detectCallback) _detectCallback(i, false);
+        threeCompositeObject.visible = false;
+      } else if (!_isDetected && ds.detected > _settings.detectionThreshold+_settings.detectionHysteresis){
+        
+        // FACE DETECTED
+        if (_detectCallback) _detectCallback(i, true);
+        threeCompositeObject.visible = true;
+      }
+    }); //end loop on all detection slots
+  }
+
+  function update_poses(ds, threeCamera){
+    // tan( <horizontal FoV> / 2 ):
+    const halfTanFOVX = Math.tan(threeCamera.aspect * threeCamera.fov * Math.PI/360); //tan(<horizontal FoV>/2), in radians (threeCamera.fov is vertical FoV)
+
+    _threeCompositeObjects.forEach(function(threeCompositeObject, i){
+      if (!threeCompositeObject.visible) return;
+      const detectState = ds[i];
+
+      // tweak Y position depending on rx:
+      //const tweak = _settings.tweakMoveYRotateX * Math.tan(detectState.rx);
+      const cz = Math.cos(detectState.rz), sz = Math.sin(detectState.rz);
+      
+      // relative width of the detection window (1-> whole width of the detection window):
+      const W = detectState.s * _scaleW;
+
+      // distance between the front face of the cube and the camera:
+      const DFront = 1 / ( 2 * W * halfTanFOVX );
+      
+      // D is the distance between the center of the unit cube and the camera:
+      const D = DFront + 0.5;
+
+      // coords in 2D of the center of the detection window in the viewport:
+      const xv = detectState.x * _scaleW;
+      const yv = detectState.y * _scaleW;
+
+      // coords in 3D of the center of the cube (in the view coordinates system):
+      const z = -D;   // minus because view coordinate system Z goes backward
+      const x = xv * D * halfTanFOVX;
+      const y = yv * D * halfTanFOVX / _canvasAspectRatio;
+
+      // set position before pivot:
+      threeCompositeObject.position.set(-sz*_settings.pivotOffsetYZ[0], -cz*_settings.pivotOffsetYZ[0], -_settings.pivotOffsetYZ[1]);
+
+      // set rotation and apply it to position:
+      threeCompositeObject.rotation.set(detectState.rx+_settings.rotationOffsetX, detectState.ry, detectState.rz, "ZYX");
+      threeCompositeObject.position.applyEuler(threeCompositeObject.rotation);
+
+      // add translation part:
+      _threeTranslation.set(x, y+_settings.pivotOffsetYZ[0], z+_settings.pivotOffsetYZ[1]);
+      threeCompositeObject.position.add(_threeTranslation);
+    }); //end loop on composite objects
+  }
+
+  //public methods:
+  const that = {
+    // launched with the same spec object than callbackReady. set spec.threeCanvasId to the ID of the threeCanvas to be in 2 canvas mode:
+    init: function(spec, detectCallback){
+      destroy();
+
+      _maxFaces = spec.maxFacesDetected;
+      _glVideoTexture = spec.videoTexture;
+      _videoTransformMat2 = spec.videoTransformMat2;
+      _gl = spec.GL;
+      _faceFilterCv = spec.canvasElement;
+      _isMultiFaces = (_maxFaces>1);
+      _videoElement = spec.videoElement;
+
+      // enable 2 canvas mode if necessary:
+      let threeCanvas = null;
+      if (spec.threeCanvasId){
+        _isSeparateThreeCanvas = true;
+        // adjust the threejs canvas size to the threejs canvas:
+        threeCanvas = document.getElementById(spec.threeCanvasId);
+        threeCanvas.setAttribute('width', _faceFilterCv.width);
+        threeCanvas.setAttribute('height', _faceFilterCv.height);
+      } else {
+        threeCanvas = _faceFilterCv;
+      }
+
+      if (typeof(detectCallback) !== 'undefined'){
+        _detectCallback = detectCallback;
+      }
+
+       // init THREE.JS context:
+      _threeRenderer = new THREE.WebGLRenderer({
+        context: (_isSeparateThreeCanvas) ? null : _gl,
+        canvas: threeCanvas,
+        alpha: (_isSeparateThreeCanvas || spec.alpha) ? true : false
+      });
+
+      _threeScene = new THREE.Scene();
+      _threeTranslation = new THREE.Vector3();
+
+      create_threeCompositeObjects();
+      create_videoScreen();
+
+      // handle device orientation change:
+      window.addEventListener('orientationchange', function(){
+        setTimeout(JEELIZFACEFILTER.resize, 1000);
+      }, false);
+      
+      const returnedDict = {
+        videoMesh: _threeVideoMesh,
+        renderer: _threeRenderer,
+        scene: _threeScene
+      };
+      if (_isMultiFaces){
+        returnedDict.faceObjects = _threeCompositeObjects
+      } else {
+        returnedDict.faceObject = _threeCompositeObjects[0];
+      }
+      return returnedDict;
+    }, //end that.init()
+
+    detect: function(detectState){
+      const ds = (_isMultiFaces) ? detectState : [detectState];
+
+      // update detection states:
+      detect(ds);
+    },
+
+    get_isDetected: function() {
+      return _isDetected;
+    },
+
+    render: function(detectState, threeCamera){
+      const ds = (_isMultiFaces) ? detectState : [detectState];
+
+      // update detection states then poses:
+      detect(ds);
+      update_poses(ds, threeCamera);
+
+      if (_isSeparateThreeCanvas){
+        // render the video texture on the faceFilter canvas:
+        _gl.viewport(0, 0, _faceFilterCv.width, _faceFilterCv.height);
+        _gl.useProgram(_glShpCopyCut);
+        _gl.uniformMatrix2fv(_glShpCopyCutVideoMatUniformPointer, false, _videoTransformMat2);
+        _gl.activeTexture(_gl.TEXTURE0);
+        _gl.bindTexture(_gl.TEXTURE_2D, _glVideoTexture);
+        _gl.drawElements(_gl.TRIANGLES, 3, _gl.UNSIGNED_SHORT, 0);
+      } else {
+        // reinitialize the state of THREE.JS because JEEFACEFILTER have changed stuffs:
+        // -> can be VERY costly !
+        _threeRenderer.state.reset();        
+      }
+
+      // trigger the render of the THREE.JS SCENE:
+      _threeRenderer.render(_threeScene, threeCamera);
+    },
+
+    sortFaces: function(bufferGeometry, axis, isInv){ // sort faces long an axis
+      // Useful when a bufferGeometry has alpha: we should render the last faces first
+      const axisOffset = {X:0, Y:1, Z:2}[axis.toUpperCase()];
+      const sortWay = (isInv) ? -1 : 1;
+
+      // fill the faces array:
+      const nFaces = bufferGeometry.index.count/3;
+      const faces = new Array(nFaces);
+      for (let i=0; i<nFaces; ++i){
+        faces[i] = [bufferGeometry.index.array[3*i], bufferGeometry.index.array[3*i+1], bufferGeometry.index.array[3*i+2]];
+      }
+
+      // compute centroids:
+      const aPos = bufferGeometry.attributes.position.array;
+      const centroids = faces.map(function(face, faceIndex){
+        return [
+          (aPos[3*face[0]]+aPos[3*face[1]]+aPos[3*face[2]])/3,       // X
+          (aPos[3*face[0]+1]+aPos[3*face[1]+1]+aPos[3*face[2]+1])/3, // Y
+          (aPos[3*face[0]+2]+aPos[3*face[1]+2]+aPos[3*face[2]+2])/3, // Z
+          face
+        ];
+      });
+
+      // sort centroids:
+      centroids.sort(function(ca, cb){
+        return (ca[axisOffset]-cb[axisOffset]) * sortWay;
+      });
+
+      // reorder bufferGeometry faces:
+      centroids.forEach(function(centroid, centroidIndex){
+        const face = centroid[3];
+        bufferGeometry.index.array[3*centroidIndex] = face[0];
+        bufferGeometry.index.array[3*centroidIndex+1] = face[1];
+        bufferGeometry.index.array[3*centroidIndex+2] = face[2];
+      });
+    }, //end sortFaces
+
+    get_threeVideoTexture: function(){
+      return _threeVideoTexture;
+    },
+
+    apply_videoTexture: function(threeMesh){
+      if (_isVideoTextureReady){
+        return;
+      }
+      threeMesh.onAfterRender = function(){
+        // Replace _threeVideoTexture.__webglTexture by the real video texture:
+        try {
+          _threeRenderer.properties.update(_threeVideoTexture, '__webglTexture', _glVideoTexture);
+          _threeVideoTexture.magFilter = THREE.LinearFilter;
+          _threeVideoTexture.minFilter = THREE.LinearFilter;
+          _isVideoTextureReady = true;
+        } catch(e){
+          console.log('WARNING in JeelizThreeHelper: the glVideoTexture is not fully initialized');
+        }
+        delete(threeMesh.onAfterRender);
+      };
+    },
+
+    // create an occluder, IE a transparent object which writes on the depth buffer:
+    create_threejsOccluder: function(occluderURL, callback){
+      const occluderMesh = new THREE.Mesh();
+      new THREE.BufferGeometryLoader().load(occluderURL, function(occluderGeometry){
+        const mat = new THREE.ShaderMaterial({
+          vertexShader: THREE.ShaderLib.basic.vertexShader,
+          fragmentShader: "precision lowp float;\n void main(void){\n gl_FragColor=vec4(1.,0.,0.,1.);\n }",
+          uniforms: THREE.ShaderLib.basic.uniforms,
+          colorWrite: false
+        });
+        
+        occluderMesh.renderOrder = -1; //render first
+        occluderMesh.material = mat;
+        occluderMesh.geometry = occluderGeometry;
+        if (typeof(callback)!=='undefined' && callback) callback(occluderMesh);
+      });
+      return occluderMesh;
+    },
+    
+    set_pivotOffsetYZ: function(pivotOffset) {
+      _settings.pivotOffsetYZ = pivotOffset;
+    },
+
+    create_camera: function(zNear, zFar){
+      const threeCamera = new THREE.PerspectiveCamera(1, 1, (zNear) ? zNear : 0.1, (zFar) ? zFar : 100);
+      that.update_camera(threeCamera);
+
+      return threeCamera;
+    },
+
+    update_camera: function(threeCamera){
+      // compute aspectRatio:
+      const canvasElement = _threeRenderer.domElement;
+      const cvw = canvasElement.width;
+      const cvh = canvasElement.height;
+      _canvasAspectRatio = cvw / cvh;
+
+      // compute vertical field of view:
+      const vw = _videoElement.videoWidth;
+      const vh = _videoElement.videoHeight;
+      const videoAspectRatio = vw / vh;
+      const fovFactor = (vh > vw) ? (1.0 / videoAspectRatio) : 1.0;
+      const fov = _settings.cameraMinVideoDimFov * fovFactor;
+      console.log('INFO in JeelizThreeHelper - update_camera(): Estimated vertical video FoV is', fov);
+      
+      // compute X and Y offsets in pixels:
+      let scale = 1.0;
+      if (_canvasAspectRatio > videoAspectRatio) {
+        // the canvas is more in landscape format than the video, so we crop top and bottom margins:
+        scale = cvw / vw;
+      } else {
+        // the canvas is more in portrait format than the video, so we crop right and left margins:
+        scale = cvh / vh;
+      }
+      const cvws = vw * scale, cvhs = vh * scale;
+      const offsetX = (cvws - cvw) / 2.0;
+      const offsetY = (cvhs - cvh) / 2.0;
+      _scaleW = cvw / cvws;
+
+      // apply parameters:
+      threeCamera.aspect = _canvasAspectRatio;
+      threeCamera.fov = fov;
+      console.log('INFO in JeelizThreeHelper.update_camera(): camera vertical estimated FoV is', fov, 'deg');
+      threeCamera.setViewOffset(cvws, cvhs, offsetX, offsetY, cvw, cvh);
+      threeCamera.updateProjectionMatrix();
+
+      // update drawing area:
+      _threeRenderer.setSize(cvw, cvh, false);
+      _threeRenderer.setViewport(0, 0, cvw, cvh);
+    }, //end update_camera()
+
+    resize: function(w, h, threeCamera){
+      _threeRenderer.domElement.width = w;
+      _threeRenderer.domElement.height = h;
+      JEELIZFACEFILTER.resize();
+      if (threeCamera){
+        that.update_camera(threeCamera);
+      }
+    }
+  }
+  return that;
+})();
+
+window.JeelizThreeHelper = JeelizThreeHelper;

thirdparty/jeeliz/addDragEventListener.js

@@ -0,0 +1,151 @@
+"use strict";
+
+const _states = {
+  idle     : 0,
+  loading  : 1,
+  dragging : 2
+}
+let _state = _states.idle; // MT217 : initialize your state always (even with a loading value)
+
+let _dP = new window.THREE.Vector3();
+let _x0 = -1; let _y0 = -1;
+let _scenes = null;
+let _boundFunction = null;
+
+function updateMeshPosition(canvas, event) {
+  const MOUSEVECTOR = new window.THREE.Vector3();
+  const DIRECTIONVECTOR = new window.THREE.Vector3();
+  const VIEWPORTVECTOR = new window.THREE.Vector3();
+  const _headCenterZ = -1;
+
+  if (_state !== _states.dragging) return; // MT217
+
+  const isTouch = !!((event.touches && event.touches.length));// MT217 is touch or mouse event ?
+
+  const xPx = (isTouch) ? event.touches[0].clientX : event.clientX; // MT217 : make the distinction between touch and mouse event
+  const yPx = (isTouch) ? event.touches[0].clientY : event.clientY; // if touch event, consider only the first finger
+
+  const dxPx = xPx - _x0; // in pixels
+  const dyPx = yPx - _y0; // in pixels too
+
+  _x0 = xPx;
+  _y0 = yPx;
+
+  // calcul des coo de dxPx, dyPx dans le viewport
+  // les offsets du canvas s'annulent -> que facteur d'échelle a appliquer
+  const dx = -dxPx / canvas.offsetWidth;
+  const dy = -dyPx / canvas.offsetHeight;
+
+  // Only check intersects if object is visible
+  // If there is only 1 object, we don't check intersections too
+  const mesh = (_scenes.length === 1) ? _scenes[0] : _scenes.find( function(scene){
+    if (!scene.parent.visible) {
+      return false;
+    }
+    // TODO: Check if a child geometry is an occlusion object. If so remove it from the intersection list
+    MOUSEVECTOR.set(-(xPx / canvas.offsetWidth) * 2 + 1, -(yPx / canvas.offsetHeight) * 2 + 1, 0.5);
+    const raycaster = new window.THREE.Raycaster();
+    raycaster.setFromCamera(MOUSEVECTOR, window.THREECAMERA);
+
+    const intersects = raycaster.intersectObjects(scene.children);
+    return (intersects.length > 0);
+  });
+
+  if (!mesh) {
+    return;
+  }
+
+  VIEWPORTVECTOR.set(dx, dy, 1);
+
+  DIRECTIONVECTOR.copy(VIEWPORTVECTOR);
+  if (!window.THREECAMERA){
+    throw new Error('Cannot find the THREE.js camera. Please check that window.THREECAMERA is the default scene camera');
+  }
+  DIRECTIONVECTOR.unproject(window.THREECAMERA);
+  DIRECTIONVECTOR.sub(window.THREECAMERA.position);
+  DIRECTIONVECTOR.normalize();
+
+  // we calculate the coefficient that will allow us to find our mesh's position
+  const k = _headCenterZ / DIRECTIONVECTOR.z;
+
+  // _dP = displacement in the scene (=world) ref :
+  _dP.copy(DIRECTIONVECTOR).multiplyScalar(k);
+  _dP.setZ(0); // bcoz we only want to displace in the (0xy) plane
+
+  const _quat = new window.THREE.Quaternion();
+  const _eul = new window.THREE.Euler();
+  _eul.setFromQuaternion(_quat);
+
+  // convert _dP to mesh ref to apply it directly to mesh.position :
+  // _dP is a vector so apply only the rotation part (not the translation)
+  _dP.applyEuler(mesh.getWorldQuaternion(_eul));
+
+  // Boost movement to follow better the mouse/touch
+  _dP.multiplyScalar(10);
+
+  // apply _dP
+  mesh.position.add(_dP);
+}
+
+function setMousePosition0(event) { // save initial position of the mouse
+  const isTouch = !!((event.touches && event.touches.length));// MT217 is touch or mouse event ?
+
+  if (isTouch && event.touches.length > 1) return; // MT217 if the user put a second finger while dragging
+
+  _x0 = (isTouch) ? event.touches[0].clientX : event.clientX; // MT217
+  _y0 = (isTouch) ? event.touches[0].clientY : event.clientY;
+}
+
+function mouseDown(event) {
+  setMousePosition0(event); // MANTIS201
+  _state = _states.dragging;
+}
+
+function mouseUp() {
+  _state = _states.idle;
+}
+
+function addDragEventListener(scenes, canvasId, remove) {
+  _scenes = Array.isArray(scenes) ? scenes : [scenes];
+  const canvas = document.getElementById((typeof(canvasId) === 'undefined') ? 'jeeFaceFilterCanvas' : canvasId);
+
+  _state = _states.idle; // MT217 : initialize your state always (even with a loading value)
+
+  _dP = new window.THREE.Vector3();
+  _x0 = undefined; _y0 = undefined;
+  if (remove) {
+    // REMOVE OUR LISTENERS
+    canvas.removeEventListener('mousemove', _boundFunction, true);
+    canvas.removeEventListener('touchmove', _boundFunction, true);
+
+    // BEGINNING OF THE INTERACTION
+    canvas.removeEventListener('mousedown', mouseDown);
+    canvas.removeEventListener('touchstart', mouseDown);
+
+    // END OF THE INTERACTION
+    canvas.removeEventListener('mouseup', mouseUp);
+    canvas.removeEventListener('touchend', mouseUp);
+
+    // ALSO END BUT IN CASE LEAVING CANVAS OR ALERT BOX ECT...
+    canvas.removeEventListener('mouseout', mouseUp);
+    canvas.removeEventListener('touchcancel', mouseUp);
+  } else {
+    // SET OUR LISTENERS
+    _boundFunction = updateMeshPosition.bind(this, canvas)
+    canvas.addEventListener('mousemove', _boundFunction, true);
+    // canvas.addEventListener('touchmove', createTouchEvent, true)
+    canvas.addEventListener('touchmove', _boundFunction, true); // MT217
+
+    // BEGINNING OF THE INTERACTION
+    canvas.addEventListener('mousedown', mouseDown);
+    canvas.addEventListener('touchstart', mouseDown);
+
+    // END OF THE INTERACTION
+    canvas.addEventListener('mouseup', mouseUp);
+    canvas.addEventListener('touchend', mouseUp);
+
+    // ALSO END BUT IN CASE LEAVING CANVAS OR ALERT BOX ECT...
+    canvas.addEventListener('mouseout', mouseUp);
+    canvas.addEventListener('touchcancel', mouseUp);
+  }
+}

thirdparty/jeeliz/addVideoRecordingEffect.js

@@ -0,0 +1,75 @@
+function addVideoRecordingEffect(canvas) {
+    var viewWidth,
+    viewHeight,
+    canvas = document.getElementById("canvasVideoEffect"),
+    ctx;
+    // change these settings
+    var patternSize = 64,
+    patternScaleX = 3,
+    patternScaleY = 1,
+    patternRefreshInterval = 8,
+    patternAlpha = 25; // int between 0 and 255,
+
+    var patternPixelDataLength = patternSize * patternSize * 4,
+    patternCanvas,
+    patternCtx,
+    patternData,
+    frame = 0;
+
+    // create a canvas which will render the grain
+    function initCanvas() {
+    viewWidth = canvas.width = canvas.clientWidth;
+    viewHeight = canvas.height = canvas.clientHeight;
+    ctx = canvas.getContext('2d');
+
+    ctx.scale(patternScaleX, patternScaleY);
+    }
+
+    // create a canvas which will be used as a pattern
+    function initGrain() {
+    patternCanvas = document.createElement('canvas');
+    patternCanvas.width = patternSize;
+    patternCanvas.height = patternSize;
+    patternCtx = patternCanvas.getContext('2d');
+    patternData = patternCtx.createImageData(patternSize, patternSize);
+    }
+
+    // put a random shade of gray into every pixel of the pattern
+    function update() {
+    var value;
+
+    for (var i = 0; i < patternPixelDataLength; i += 1) {
+        value = (Math.random() * 155) | 0;
+
+        patternData.data[i    ] = value;
+        patternData.data[i + 10] = value;
+        patternData.data[i + 15] = value;
+        patternData.data[i + 11] = patternAlpha;
+    }
+
+    patternCtx.putImageData(patternData, 0, 0);
+    }
+
+    // fill the canvas using the pattern
+    function draw() {
+    ctx.clearRect(0, 0, viewWidth, viewHeight);
+
+    ctx.fillStyle = ctx.createPattern(patternCanvas, 'repeat');
+    ctx.fillRect(0, 0, viewWidth, viewHeight);
+    }
+
+    function loop() {
+    if (++frame % patternRefreshInterval === 0) {
+      update();
+      draw();
+    }
+
+    requestAnimationFrame(loop);
+    }
+
+
+
+  initCanvas();
+  initGrain();
+  requestAnimationFrame(loop);
+}

thirdparty/jeeliz/helpers/HeadControls.js

@@ -0,0 +1,263 @@
+/*
+  Use JEELIZ FACE FILTER API to control the movements of a camera
+  This script has been put into shared because it can be used with different 3D engines
+  We have at least 2 integration examples:
+    - with CesiumJS for a head controlled Google Earth like demo
+    - with THREE.JS for a camera controller (THREE.HeadControls)
+
+   ==== INITIALIZATION ====
+  HeadControls.init(spec) with spec =
+  spec (*-> mandatory): 
+    - settings: object. override default settings if specified
+    - canvasId*: id of the canvas where the JEELIZVTO will be initialized. We will draw the face tracking on it
+    - callbackReady: callback launched when the controller is ready. launched with errCode if error, false otherwise
+    - callbackMove*: function to move the camera
+    - disableRestPosition: do not offset the face position with a rest position. Default: false
+    - NNCPath*: path of the NN net
+
+  ==== OTHER METHODS ====
+  HeadControls.toggle(<boolean>onOff): toggle on or off the HeadControls
+
+*/
+
+var HeadControls = (function(){
+  const _defaultSettings = {
+    detectionThreshold: 0.85, // sensibility, between 0 and 1. Less -> more sensitive
+    detectionHysteresis: 0.05,
+    tol: {
+      rx: 5,// do not move if head turn more than this value (in degrees) from head rest position
+      ry: 5,
+      s: 5 // do not move forward/backward if head is larger/smaller than this percent from the rest position
+    },
+    sensibility: {
+      rx: 1,
+      ry: 1,
+      s: 1
+    }
+  };
+
+  // private variables:
+  let _settings = null;
+  const _returnValue = {
+    dRx:0, dRy: 0,
+    dZ: 0
+  };
+
+  // internal state:
+  const _state = {
+    isLoaded: false,
+    isDetected:false,
+    isEnabled: false,
+    restHeadPosition: { // position of the head matching with No Move
+      needsUpdate: false,
+      s: 0,
+      rx: 0,
+      ry: 0
+    }
+  };
+
+  let _lastTimestamp = 0;
+  let _gl = null, _cv = null, _videoTexture = null, _videoTransformMat2 = null, _glHeadSearchDrawShaderProgram = null;
+  let _headSearchUniformXys = null, _headSearchUniformVideoTransformMat2 = null;
+  let _disableRestPosition = false;
+
+  // private functions:
+  function compute_delta(ref, val, tol, sensibility){
+    if (Math.abs(ref-val)<tol){
+      return 0;
+    }
+    return (val-ref) * sensibility;
+  }
+
+  function compile_shader(source, glType, typeString) {
+    const glShader = _gl.createShader(glType);
+    _gl.shaderSource(glShader, source);
+    _gl.compileShader(glShader);
+    if (!_gl.getShaderParameter(glShader, _gl.COMPILE_STATUS)) {
+      alert("ERROR IN " + typeString +  " SHADER: " + _gl.getShaderInfoLog(glShader));
+      return null;
+    }
+    return glShader;
+  };
+
+  function init_headSearchDraw(){
+    // build _glHeadSearchDrawShaderProgram:
+    const shaderVertexSource = "\n\
+      attribute vec2 aat_position;\n\
+      varying vec2 vUV;\n\
+      \n\
+      void main(void) {\n\
+        gl_Position = vec4(aat_position, 0., 1.);\n\
+        vUV = 0.5 + 0.5 * aat_position;\n\
+        vUV.x = 1.-vUV.x; // mirror diplay\n\
+      }";
+    const shaderFragmentSource = "\n\
+      precision lowp float;\n\
+      varying vec2 vUV;\n\
+      \n\
+      uniform sampler2D samplerVideo;\n\
+      uniform mat2 videoTransformMat2;\n\
+      uniform vec3 uxys;\n\
+      \n\
+      void main(void) {\n\
+        vec2 uvVideoCentered = 2.0 * videoTransformMat2 * (vUV - 0.5);\n\
+        vec2 uvVideo = uvVideoCentered + 0.5;\n\
+        vec3 colorVideo = texture2D(samplerVideo, uvVideo).rgb;\n\
+        vec2 pos = vUV*2.-vec2(1.,1.);\n\
+        vec2 isInside = step(uxys.xy-uxys.z*vec2(1.,1.), pos);\n\
+        isInside *= step(pos, uxys.xy+uxys.z*vec2(1.,1.));\n\
+        vec2 blendCenterFactor = abs(pos-uxys.xy) / uxys.z;\n\
+        float alpha = isInside.x * isInside.y * pow(max(blendCenterFactor.x, blendCenterFactor.y), 3.);\n\
+        vec3 color = mix(colorVideo, vec3(0.,0.6,1.), alpha);\n\
+        gl_FragColor = vec4(color,1.);\n\
+      }";
+
+    const glShaderVertex = compile_shader(shaderVertexSource, _gl.VERTEX_SHADER, 'VERTEX');
+    const glShaderFragment = compile_shader(shaderFragmentSource, _gl.FRAGMENT_SHADER, 'FRAGMENT');
+
+    _glHeadSearchDrawShaderProgram = _gl.createProgram();
+    _gl.attachShader(_glHeadSearchDrawShaderProgram, glShaderVertex);
+    _gl.attachShader(_glHeadSearchDrawShaderProgram, glShaderFragment);
+
+    _gl.linkProgram(_glHeadSearchDrawShaderProgram);
+    const samplerVideo = _gl.getUniformLocation(_glHeadSearchDrawShaderProgram, 'samplerVideo');
+    _headSearchUniformXys = _gl.getUniformLocation(_glHeadSearchDrawShaderProgram, 'uxys');
+    _headSearchUniformVideoTransformMat2 = _gl.getUniformLocation(_glHeadSearchDrawShaderProgram, 'videoTransformMat2');
+
+    _gl.useProgram(_glHeadSearchDrawShaderProgram);
+    _gl.uniform1i(samplerVideo, 0);
+  } //end init_headSearchDraw()
+
+  function draw_headSearch(detectState){
+    // unbind the current FBO and set the viewport as the whole canvas:
+    _gl.viewport(0, 0, _cv.width, _cv.height);
+
+    // use the head draw shader program and sync uniforms:
+    _gl.useProgram(_glHeadSearchDrawShaderProgram);
+    _gl.activeTexture(_gl.TEXTURE0);
+    _gl.bindTexture(_gl.TEXTURE_2D, _videoTexture);
+    _gl.uniform3f(_headSearchUniformXys, detectState.x, detectState.y, detectState.s);
+    _gl.uniformMatrix2fv(_headSearchUniformVideoTransformMat2, false, _videoTransformMat2);
+
+    // draw the square looking for the head
+    // the VBO filling the whole screen is still bound to the context
+    // fill the viewPort:
+    _gl.drawElements(_gl.TRIANGLES, 3, _gl.UNSIGNED_SHORT, 0);
+  }
+
+  function compute_cameraMove(detectState){
+    if (_state.isDetected && detectState.detected<_settings.detectionThreshold-_settings.detectionHysteresis){
+      // DETECTION LOST
+      
+      _state.isDetected = false;
+      _returnValue.dRx = 0;
+      _returnValue.dRy = 0;
+      _returnValue.dZ = 0;
+    } else if (!_state.isDetected && detectState.detected>_settings.detectionThreshold+_settings.detectionHysteresis){
+      // FACE DETECTED
+      _state.isDetected = true;
+    }
+
+    if (_state.isEnabled){
+      draw_headSearch(detectState);
+    }
+
+    if (!_state.isEnabled || !_state.isDetected || !_state.isLoaded){
+      return _returnValue; // no camera move
+    }
+
+    if (_state.restHeadPosition.needsUpdate && !_disableRestPosition){
+      _state.restHeadPosition.needsUpdate = false;
+      _state.restHeadPosition.rx = detectState.rx;
+      _state.restHeadPosition.ry = detectState.ry;
+      _state.restHeadPosition.s = detectState.s;
+      _lastTimestamp = Date.now();
+    }
+
+    // compute movement of the camera
+    const ts = Date.now();
+    const dt = ts - _lastTimestamp;
+    _returnValue.dRx = dt * compute_delta(_state.restHeadPosition.rx, detectState.rx, _settings.tol.rx, _settings.sensibility.rx);
+    _returnValue.dRy = dt * compute_delta(_state.restHeadPosition.ry, detectState.ry, _settings.tol.ry, _settings.sensibility.ry);
+    _returnValue.dZ = dt * compute_delta(_state.restHeadPosition.s, detectState.s, _settings.tol.s, _settings.sensibility.s);
+    
+    _lastTimestamp = ts;
+    return _returnValue;
+  } //end compute_cameraMove()
+
+  // public methods:
+  const that = {
+    init: function(spec){
+      // set settings:
+      if (typeof(spec.settings)==='undefined') spec.settings={};
+      _disableRestPosition = (typeof(spec.disableRestPosition)==='undefined') ? false : spec.disableRestPosition;
+      _settings = Object.assign({}, _defaultSettings, spec.settings);
+      _settings.tol.rx *= Math.PI / 180; // convert from degrees to radians
+      _settings.tol.ry *= Math.PI / 180;
+      _settings.tol.s /= 100;
+
+      // init the API:
+       JEELIZFACEFILTER.init({
+        canvasId: spec.canvasId,
+        NNCPath: spec.NNCPath, // root of NNC.json file
+        callbackReady: function(errCode, jeeFaceFilterObj){
+          if (errCode){
+            console.log('AN ERROR HAPPENS. SORRY BRO :( . ERR =', errCode);
+            if (spec.callbackReady){
+              spec.callbackReady(errCode);
+            }
+            return;
+          }
+          _gl = jeeFaceFilterObj['GL'];
+          _videoTexture = jeeFaceFilterObj['videoTexture'];
+          _videoTransformMat2 = jeeFaceFilterObj['videoTransformMat2'];
+          _cv = jeeFaceFilterObj['canvasElement'];
+
+          init_headSearchDraw();
+
+          if (spec.callbackReady){
+            spec.callbackReady(false);
+          }
+          _state.isLoaded = true;
+        }, //end callbackReady()
+
+        // called at each render iteration (drawing loop):
+        callbackTrack: function(detectState){
+          const mv = compute_cameraMove(detectState);
+          mv.expressions = detectState.expressions;
+          if (!_state.isEnabled){
+            return;
+          }
+          if (mv.dRx!==0 || mv.dRy!==0 || mv.dZ!==0){
+            spec.callbackMove(mv);
+          }
+        }
+      }); //end JEELIZFACEFILTER.init call
+    }, //end init()
+
+    toggle: function(isEnabled){
+      if (_state.isEnabled===isEnabled){
+        return true;
+      } else if (!isEnabled){ //disable
+        _state.isEnabled = false;
+        return true;
+      } else {
+        _state.isEnabled = true;
+        _state.restHeadPosition.needsUpdate = true;
+        return true;
+      }
+    },
+
+    reset_restHeadPosition: function(){
+      _state.restHeadPosition.needsUpdate = true;
+    }
+  }; //end that
+  return that;
+})();
+
+// Export ES6 module:
+try {
+  module.exports = HeadControls;
+} catch(e){
+  console.log('HeadControls ES6 Module not exported');
+}

thirdparty/jeeliz/helpers/JeelizCanvas2DHelper.js

@@ -0,0 +1,141 @@
+/*
+Usage: JeelizCanvas2DHelper(spec) where spec is the returned object of the initialization function (callbackReady)
+Return an object width these properties:
+
+ - canvas: the CANVAS element
+ - ctx: the canvas drawing context
+ - update_canvasTexture: function to launch each time the canvas has been updated (somethink has been drawn on it)
+ - draw: draw the video with the canvas above
+ - getCoordinates: transform the detectedState relative 2D viewport coords into canvas 2D pixel coordinates
+ - resize: to call if the HTML canvas size has changed
+*/
+
+const JeelizCanvas2DHelper = function(spec){
+
+  // some globalz:
+  let CV = null, CANVAS2D = null, CTX = null, GL = null, CANVASTEXTURE = null, CANVASTEXTURENEEDSUPDATE = null, SHADERCOPY = null, VIDEOTEXTURE = null;
+  let VIDEOTEXTURETRANSFORMMAT2 = null, UUVTRANSFORM = null;
+
+  const COORDINATES = {
+    x:0, y:0, s:0
+  };
+
+  //BEGIN WEBGL HELPERS
+  // compile a shader:
+  function compile_shader(source, glType, typeString) {
+    const glShader = GL.createShader(glType);
+    GL.shaderSource(glShader, source);
+    GL.compileShader(glShader);
+    if (!GL.getShaderParameter(glShader, GL.COMPILE_STATUS)) {
+      alert("ERROR IN " + typeString +  " SHADER: " + GL.getShaderInfoLog(glShader));
+      return null;
+    }
+    return glShader;
+  };
+
+  // helper function to build the shader program:
+  function build_shaderProgram(shaderVertexSource, shaderFragmentSource, id) {
+    // compile both shader separately:
+    const glShaderVertex = compile_shader(shaderVertexSource, GL.VERTEX_SHADER, "VERTEX " + id);
+    const glShaderFragment = compile_shader(shaderFragmentSource, GL.FRAGMENT_SHADER, "FRAGMENT " + id);
+
+    const glShaderProgram = GL.createProgram();
+    GL.attachShader(glShaderProgram, glShaderVertex);
+    GL.attachShader(glShaderProgram, glShaderFragment);
+
+    // start the linking stage:
+    GL.linkProgram(glShaderProgram);
+    return glShaderProgram;
+  }
+  //END WEBGL HELPERS
+
+
+  // affect some globalz:
+  GL = spec.GL;
+  CV = spec.canvasElement;
+  VIDEOTEXTURE = spec.videoTexture;
+  VIDEOTEXTURETRANSFORMMAT2 = spec.videoTransformMat2;
+
+  // create and size the 2D canvas and its drawing context:
+  CANVAS2D = document.createElement('canvas');
+  CANVAS2D.width = CV.width;
+  CANVAS2D.height = CV.height;
+  CTX = CANVAS2D.getContext('2d');
+    
+  // create the WebGL texture with the canvas:
+  CANVASTEXTURE = GL.createTexture();
+  GL.bindTexture(GL.TEXTURE_2D, CANVASTEXTURE);
+  GL.texImage2D(GL.TEXTURE_2D, 0, GL.RGBA, GL.RGBA, GL.UNSIGNED_BYTE, CANVAS2D);
+  GL.texParameteri(GL.TEXTURE_2D, GL.TEXTURE_MAG_FILTER, GL.LINEAR);
+  GL.texParameteri(GL.TEXTURE_2D, GL.TEXTURE_MIN_FILTER, GL.LINEAR);
+  GL.texParameteri(GL.TEXTURE_2D, GL.TEXTURE_WRAP_S, GL.CLAMP_TO_EDGE);
+  GL.texParameteri(GL.TEXTURE_2D, GL.TEXTURE_WRAP_T, GL.CLAMP_TO_EDGE);
+
+  // build the copy shader program:
+  const copyVertexShaderSource = "attribute vec2 position;\n\
+    uniform mat2 UVTransformMat2;\n\
+    varying vec2 vUV;\n\
+    void main(void){\n\
+      gl_Position = vec4(position, 0., 1.);\n\
+      vUV = vec2(0.5,0.5) + UVTransformMat2 * position;\n\
+    }";
+
+  const copyFragmentShaderSource = "precision lowp float;\n\
+    uniform sampler2D samplerImage;\n\
+    varying vec2 vUV;\n\
+    \n\
+    void main(void){\n\
+      gl_FragColor = texture2D(samplerImage, vUV);\n\
+    }";
+  SHADERCOPY = build_shaderProgram(copyVertexShaderSource, copyFragmentShaderSource, 'VIDEO');
+  const uSampler = GL.getUniformLocation(SHADERCOPY, 'samplerImage');
+  UUVTRANSFORM = GL.getUniformLocation(SHADERCOPY, 'UVTransformMat2');
+  GL.useProgram(SHADERCOPY);
+  GL.uniform1i(uSampler, 0);
+  
+  return {
+    canvas: CANVAS2D,
+    ctx: CTX,
+
+    update_canvasTexture: function(){
+      CANVASTEXTURENEEDSUPDATE = true;
+    },
+
+    draw: function(){ // draw the video and the canvas above
+      GL.viewport(0, 0, CV.width, CV.height);
+      GL.useProgram(SHADERCOPY);
+
+      // enable blending:
+      GL.enable(GL.BLEND);
+      GL.blendFunc(GL.SRC_ALPHA, GL.ONE_MINUS_SRC_ALPHA);
+
+      // draw the video first:
+      GL.bindTexture(GL.TEXTURE_2D, VIDEOTEXTURE);
+      GL.uniformMatrix2fv(UUVTRANSFORM, false, VIDEOTEXTURETRANSFORMMAT2);
+      GL.drawElements(GL.TRIANGLES, 3, GL.UNSIGNED_SHORT, 0);
+
+      // then draw the canvas:
+      GL.bindTexture(GL.TEXTURE_2D, CANVASTEXTURE);
+      GL.uniformMatrix2fv(UUVTRANSFORM, false, [0.5, 0, 0, 0.5]);
+      if (CANVASTEXTURENEEDSUPDATE) {
+        GL.texImage2D(GL.TEXTURE_2D, 0, GL.RGBA, GL.RGBA, GL.UNSIGNED_BYTE, CANVAS2D);
+      }
+      GL.drawElements(GL.TRIANGLES, 3, GL.UNSIGNED_SHORT, 0);
+
+      GL.disable(GL.BLEND);      
+    },
+
+    getCoordinates: function(detectedState){
+      COORDINATES.x = Math.round((0.5+0.5*detectedState.x-0.5*detectedState.s)*CV.width);
+      COORDINATES.y = Math.round((0.5+0.5*detectedState.y-0.5*detectedState.s)*CV.height);
+      COORDINATES.w = Math.round(detectedState.s*CV.width);
+      COORDINATES.h = COORDINATES.w;
+      return COORDINATES;   
+    },
+
+    resize: function(){
+      CANVAS2D.width = CV.width;
+      CANVAS2D.height = CV.height;
+    }
+  }; //end Canvas2DDisplay return value
+} //end JeelizCanvas2DHelper()

thirdparty/jeeliz/helpers/JeelizFaceCut.js

@@ -0,0 +1,416 @@
+/*
+This helper is usefull to cut faces (in 2D)
+It is used for example in the faceSwap demo
+It can:
+- handle basic vanilla WebGL helpers like compiling shaders
+- handle search display
+- handle face cut
+
+It does not handle the 3D aspect (no matrix stories)
+
+*/
+
+const JeelizFaceCut = (function(){
+
+  // settings:
+  const FACECUTSETTINGS = {
+    scale: [1.1, 1.7],   // scale of the face cut area. Relative to initial square detection area
+    offset: [0.01,0.10], // relative. 1-> 100% scale mask width of the image (or height)
+    smoothEdge: 0.15,  // crop smooth edge
+    headForheadY: 0.7,   // forhead start when Y>this value. Max: 1
+    headJawY: 0.5,     // lower jaw start when Y<this value. Max: 1
+    ryDriftDx: -0.1,
+    rzDriftDx: 0.1     // drift along X axis if rotation around Z (depth). tweak
+  };
+  
+  // private variables:
+  let GL = null, __canvas = null, __glVideoTexture = null, __videoTransformMat2 = null;
+  const __shps = {};
+  let __fboDrawTarget = null, __fbo = null;
+
+
+  // private functions:
+
+  // BEGIN VANILLA WEBGL HELPERS
+  // compile a shader:
+  function compile_shader(source, glType, typeString) {
+    const glShader = GL.createShader(glType);
+    GL.shaderSource(glShader, source);
+    GL.compileShader(glShader);
+    if (!GL.getShaderParameter(glShader, GL.COMPILE_STATUS)) {
+      alert("ERROR IN " + typeString +  " SHADER: " + GL.getShaderInfoLog(glShader));
+      console.log('Buggy shader source: \n', source);
+      return null;
+    }
+    return glShader;
+  };
+
+  // build the shader program:
+  function build_shaderProgram(shaderVertexSource, shaderFragmentSource, id) {
+    // compile both shader separately:
+    const glShaderVertex = compile_shader(shaderVertexSource, GL.VERTEX_SHADER, "VERTEX " + id);
+    const glShaderFragment = compile_shader(shaderFragmentSource, GL.FRAGMENT_SHADER, "FRAGMENT " + id);
+
+    const glShaderProgram = GL.createProgram();
+    GL.attachShader(glShaderProgram, glShaderVertex);
+    GL.attachShader(glShaderProgram, glShaderFragment);
+
+    // start the linking stage:
+    GL.linkProgram(glShaderProgram);
+    const aPos = GL.getAttribLocation(glShaderProgram, "position");
+    GL.enableVertexAttribArray(aPos);
+
+    return {
+      program: glShaderProgram,
+      uniforms:{}
+    };
+  }
+  //END VANILLA WEBGL HELPERS
+
+  // builds shader programs:
+  function build__shps(){
+    const copyVertexShaderSource = "attribute vec2 position;\n\
+       varying vec2 vUV;\n\
+       void main(void){\n\
+        gl_Position = vec4(position, 0., 1.);\n\
+        vUV = 0.5 + 0.5*position;\n\
+       }";
+
+    const copyFragmentShaderSource = "precision lowp float;\n\
+       uniform sampler2D samplerImage;\n\
+       varying vec2 vUV;\n\
+       \n\
+       void main(void){\n\
+         gl_FragColor = texture2D(samplerImage, vUV);\n\
+       }";
+
+    // Copy shader program: simply copy a texture
+    __shps.copy = build_shaderProgram(copyVertexShaderSource, copyFragmentShaderSource, 'COPY');
+    __shps.copy.uniforms.samplerImage = GL.getUniformLocation(__shps.copy.program, 'samplerImage');
+    GL.useProgram(__shps.copy.program);
+    GL.uniform1i(__shps.copy.uniforms.samplerImage, 0);
+
+    // search shp: display a search square on the head
+    // we play on the viewport position to positionnate it
+    const searchFragmentShaderSource = "precision lowp float;\n\
+       uniform float detected;\n\
+       varying vec2 vUV;\n\
+       \n\
+       void main(void){\n\
+         vec3 color = mix(vec3(0.1,0.1,0.1), vec3(0.,0.6,1.), detected);\n\
+         vec2 blendCenterFactor = 2. * abs(vUV-vec2(0.5,0.5));\n\
+         float alpha = pow(max(blendCenterFactor.x, blendCenterFactor.y), 3.);\n\
+         gl_FragColor = vec4(color, alpha*0.5);\n\
+       }";
+    __shps.search = build_shaderProgram(copyVertexShaderSource, searchFragmentShaderSource, 'SEARCH');
+    __shps.search.uniforms.detected = GL.getUniformLocation(__shps.search.program, 'detected');
+
+
+    // faceCut shp: cut the face and put the result into a texture with alpha:
+    const copyRotateVertexShaderSource = "attribute vec2 position;\n\
+     uniform float rz, aspectRatio;\n\
+     varying vec2 vUV, vUVrot;\n\
+     void main(void){\n\
+       float cz=cos(rz+0.2),sz=sin(rz);\n\
+       vec2 posRz=mat2(cz, sz*aspectRatio, -sz/aspectRatio, cz)*position;\n\
+      gl_Position=vec4(position, 0., 1.);\n\
+      vUV = 0.5 + 0.5 * position;\n\
+      vUVrot = 0.5 + 0.5 * posRz;\n\
+     }";
+     
+    const faceCutFragmentShaderSource = "precision lowp float;\n\
+      uniform sampler2D samplerImage;\n\
+      uniform mat2 videoTransformMat2;\n\
+      uniform vec2 offset, scale;\n\
+      varying vec2 vUV, vUVrot;\n\
+      \n\
+      const float UPPERHEADY = " + FACECUTSETTINGS.headForheadY.toFixed(2) + ";\n\
+      const float LOWERHEADY = " + FACECUTSETTINGS.headJawY.toFixed(2) + ";\n\
+      const float SMOOTHEDGE = " + FACECUTSETTINGS.smoothEdge.toFixed(2) + ";\n\
+      \n\
+      \n\
+      void main(void){\n\
+        \n\
+        float alpha = 0.;\n\
+        vec2 uv = vUVrot; // uv normalized in the face\n\
+        if (uv.y>UPPERHEADY){ // upper head: circle arc\n\
+          vec2 uvc = (uv-vec2(0.5,UPPERHEADY))*vec2(1., 0.5/(1.-UPPERHEADY));\n\
+          float alphaBorder = smoothstep(0.5-SMOOTHEDGE, 0.5, length(uvc));\n\
+          float alphaCenter = smoothstep(UPPERHEADY, 1., uv.y);\n\
+          alpha = mix(alphaCenter, alphaBorder, smoothstep(0.3, 0.45, abs(uv.x-0.5)));\n\
+        } else if (uv.y<LOWERHEADY){ // lower head: circle arc \n\
+          vec2 uvc = (uv-vec2(0.5, LOWERHEADY))*vec2(1., 0.5/LOWERHEADY);\n\
+          alpha = smoothstep(0.5-SMOOTHEDGE, 0.5, length(uvc));\n\
+        } else { // middle head: straight\n\
+          vec2 uvc = vec2(uv.x-0.5, 0.);\n\
+          alpha = smoothstep(0.5-SMOOTHEDGE, 0.5,length(uvc));\n\
+        }\n\
+        \n\
+        vec2 uvCol = offset + (vUV+vec2(-0.5,-0.5))*scale;\n\
+        // go from canvas ref to video or image ref:\n\
+        vec2 uvImageCentered = 2.0 * videoTransformMat2 * (uvCol - 0.5);\n\
+        vec3 color = texture2D(samplerImage, uvImageCentered + 0.5).rgb;\n\
+        \n\
+        float grayScale = dot(color, vec3(0.33,0.33,0.33));\n\
+      if (alpha>0.01){\n\
+        alpha = mix(pow(alpha, 0.5), pow(alpha, 1.5), smoothstep(0.1,0.5,grayScale));\n\
+      }\n\
+      //color = vec3(1.,0.,0.); //FOR DEBUG: DISPLAY IN RED\n\
+      gl_FragColor = vec4(color, 1.-alpha);\n\
+       \n\
+     }";
+    __shps.faceCut = build_shaderProgram(copyRotateVertexShaderSource, faceCutFragmentShaderSource, 'FACECUT');
+    __shps.faceCut.uniforms.rz = GL.getUniformLocation(__shps.faceCut.program, 'rz');
+    __shps.faceCut.uniforms.offset = GL.getUniformLocation(__shps.faceCut.program, 'offset');
+    __shps.faceCut.uniforms.scale = GL.getUniformLocation(__shps.faceCut.program, 'scale');
+    __shps.faceCut.uniforms.videoTransformMat2 = GL.getUniformLocation(__shps.faceCut.program, 'videoTransformMat2');
+    __shps.faceCut.uniforms.aspectRatio = GL.getUniformLocation(__shps.faceCut.program, 'aspectRatio');
+    __shps.faceCut.uniforms.samplerImage = GL.getUniformLocation(__shps.faceCut.program, 'samplerImage');
+    GL.useProgram(__shps.faceCut.program);
+    GL.uniform1i(__shps.faceCut.uniforms.samplerImage, 0);
+    
+
+    // renderFace shp: make color correction
+    const renderFaceFragmentShaderSource = "precision lowp float;\n\
+     uniform sampler2D samplerImage, samplerHueSrc, samplerHueDst;\n\
+     varying vec2 vUV, vUVrot;\n\
+     const vec2 EPSILON2=vec2(0.001, 0.001);\n\
+     \n\
+     vec3 rgb2hsv(vec3 c) { //from http://lolengine.net/blog/2013/07/27/rgb-to-hsv-in-glsl\n\
+      vec4 K = vec4(0.0, -1.0 / 3.0, 2.0 / 3.0, -1.0);\n\
+      vec4 p = mix(vec4(c.bg, K.wz), vec4(c.gb, K.xy), step(c.b, c.g));\n\
+      vec4 q = mix(vec4(p.xyw, c.r), vec4(c.r, p.yzx), step(p.x, c.r));\n\
+      float d = q.x - min(q.w, q.y);\n\
+      float e = 1.0e-10;\n\
+      return vec3(abs(q.z + (q.w - q.y) / (6.0 * d + e)), d / (q.x + e), q.x);\n\
+     }\n\
+     \n\
+     vec3 hsv2rgb(vec3 c) { //from https://github.com/hughsk/glsl-hsv2rgb \n\
+      vec4 K = vec4(1.0, 2.0 / 3.0, 1.0 / 3.0, 3.0); \n\
+      vec3 p = abs(fract(c.xxx + K.xyz) * 6.0 - K.www); \n\
+      return c.z * mix(K.xxx, clamp(p - K.xxx, 0.0, 1.0), c.y); \n\
+      //return c.z * normalize(mix(K.xxx, clamp(p - K.xxx, 0.0, 1.0), c.y));\n\
+     } \n\
+     \n\
+     void main(void){\n\
+       vec2 uv = vUVrot;\n\
+       // get color in HSV format:\n\
+       vec2 uvCut = uv;\n\
+       vec4 colorImage = texture2D(samplerImage, uvCut);\n\
+       vec3 colorRGB = colorImage.rgb;\n\
+       vec3 colorHSV = rgb2hsv(colorRGB);\n\
+       // compute color transform:\n\
+       vec3 srcRGB = texture2D(samplerHueSrc, uv).rgb;\n\
+       vec3 dstRGB = texture2D(samplerHueDst, uv).rgb;\n\
+       vec3 srcHSV = rgb2hsv(srcRGB);\n\
+       vec3 dstHSV = rgb2hsv(dstRGB);\n\
+       // apply the transform:\n\
+       vec2 factorSV = vec2(1.,0.8)*dstHSV.yz/(srcHSV.yz+EPSILON2);\n\
+       factorSV = clamp(factorSV, vec2(0.3,0.3), vec2(3,3.));\n\
+       float dHue = dstHSV.x - srcHSV.x;\n\
+       vec3 colorHSVout = vec3(mod(1.0+colorHSV.x+dHue, 1.0), colorHSV.yz*factorSV);\n\
+       colorHSVout = clamp(colorHSVout, vec3(0.,0.,0.), vec3(1.,1.,1));\n\
+       // reconvert to RGB and output the color:\n\
+       colorRGB = hsv2rgb(colorHSVout);\n\
+       gl_FragColor = vec4(colorRGB, colorImage.a);\n\
+     }";
+    __shps.renderFace = build_shaderProgram(copyRotateVertexShaderSource, renderFaceFragmentShaderSource, 'RENDERFACE');
+    __shps.renderFace.uniforms.rz = GL.getUniformLocation(__shps.renderFace.program, 'rz');
+    __shps.renderFace.uniforms.aspectRatio = GL.getUniformLocation(__shps.renderFace.program, 'aspectRatio');
+    __shps.renderFace.uniforms.samplerImage = GL.getUniformLocation(__shps.renderFace.program, 'samplerImage');
+    __shps.renderFace.uniforms.samplerHueSrc = GL.getUniformLocation(__shps.renderFace.program, 'samplerHueSrc');
+    __shps.renderFace.uniforms.samplerHueDst = GL.getUniformLocation(__shps.renderFace.program, 'samplerHueDst');
+    GL.useProgram(__shps.renderFace.program);
+    GL.uniform1i(__shps.renderFace.uniforms.samplerImage, 0);
+    GL.uniform1i(__shps.renderFace.uniforms.samplerHueSrc, 2);
+    GL.uniform1i(__shps.renderFace.uniforms.samplerHueDst, 1);
+     
+  } //end build__shps()
+
+  function fill_viewport(){ // FILL VIEWPORT. A VBO with 1 big triangle is already bound to the context by Facefilter API
+    GL.drawElements(GL.TRIANGLES, 3, GL.UNSIGNED_SHORT, 0);
+  }
+
+  function build__fbo(){ // we need to create a FBO to do render to texture for color corrections
+    __fbo = GL.createFramebuffer();
+    __fboDrawTarget = (GL.DRAW_FRAMEBUFFER)?GL.DRAW_FRAMEBUFFER:GL.FRAMEBUFFER; //depending on WebGL1 or WebGL2
+  }
+
+  function create_emptyTexture(w, h){
+    const tex = GL.createTexture();
+    GL.bindTexture(GL.TEXTURE_2D, tex);
+    GL.texImage2D(GL.TEXTURE_2D, 0, GL.RGBA, w, h, 0, GL.RGBA, GL.UNSIGNED_BYTE, null);
+    GL.texParameteri( GL.TEXTURE_2D, GL.TEXTURE_WRAP_S, GL.CLAMP_TO_EDGE );
+    GL.texParameteri( GL.TEXTURE_2D, GL.TEXTURE_WRAP_T, GL.CLAMP_TO_EDGE );
+    return tex;
+  };
+
+  function create_emptyLinearTexture(w, h){
+    const tex = create_emptyTexture(w,h);
+    GL.texParameteri(GL.TEXTURE_2D, GL.TEXTURE_MAG_FILTER, GL.LINEAR);
+    GL.texParameteri(GL.TEXTURE_2D, GL.TEXTURE_MIN_FILTER, GL.LINEAR);
+    return tex;
+  };
+
+  //create the artpainting and userCrop hue textures:
+  function create_emptyMipmapTexture(w,h){
+    const tex = create_emptyTexture(w,h);
+    GL.texParameteri(GL.TEXTURE_2D, GL.TEXTURE_MAG_FILTER, GL.LINEAR);
+    GL.texParameteri(GL.TEXTURE_2D, GL.TEXTURE_MIN_FILTER, GL.LINEAR_MIPMAP_NEAREST);
+    return tex;
+  };
+
+  // public static methods:
+  const superThat = {
+    init: function(spec){
+      GL = spec.GL;
+      __canvas = spec.canvasElement;
+      __glVideoTexture = spec.videoTexture;
+      __videoTransformMat2 = spec.videoTransformMat2;
+
+      build__shps();
+      build__fbo();
+    },
+
+    draw_video: function(){ // draw the video texture as background
+      JEELIZFACEFILTER.render_video();
+    },
+
+    draw_search: function(detectStates){
+      superThat.draw_video();
+
+      GL.enable(GL.BLEND);
+      GL.blendFunc(GL.SRC_ALPHA, GL.ONE_MINUS_SRC_ALPHA);
+      GL.useProgram(__shps.search.program);
+      detectStates.forEach(function(detectState){
+        GL.uniform1f(__shps.search.uniforms.detected, detectState.detected);
+        const xPx = ((detectState.x+1)*0.5*__canvas.width),
+          yPx = ((detectState.y+1)*0.5*__canvas.height),
+          wPx = Math.round(detectState.s*__canvas.width);
+        GL.viewport(Math.round(xPx-wPx/2), Math.round(yPx-wPx/2), wPx, wPx);
+        fill_viewport();
+      });
+    },
+
+    instance: function(specFaceCut){
+      // Initialize a facecut object
+
+      // default parameters if not specified 
+      specFaceCut.sizePx = specFaceCut.sizePx || 64; // should be POT - size of the cut face texture
+      specFaceCut.hueSizePx = specFaceCut.hueSizePx || 4; // should be POT - size of the texture used for color correction
+
+      // create the face cut POT texture which will be used later to compute the hue Texture:
+      const _glFaceCutTexture = create_emptyMipmapTexture(specFaceCut.sizePx,specFaceCut.sizePx);
+
+      // create the hue Texture which will be used for color correction:
+      const _glHueTexture = create_emptyLinearTexture(specFaceCut.hueSizePx, specFaceCut.hueSizePx);
+      
+      // normalized detection parameters:
+      const _faceOffset = [0,0], _faceScale = [0,0];
+      let _rz = 0.0;
+      function compute_faceScaleOffset(detectState){
+        _rz = detectState.rz;
+        _faceOffset[0] = detectState.x*0.5 + 0.5 + detectState.s*FACECUTSETTINGS.offset[0]*Math.sin(detectState.ry); //normalized x position
+        _faceOffset[1] = detectState.y*0.5 + 0.5 + detectState.s*FACECUTSETTINGS.offset[1];
+        _faceScale[0] = detectState.s * FACECUTSETTINGS.scale[0];
+        _faceScale[1] = detectState.s * FACECUTSETTINGS.scale[1]*__canvas.width/__canvas.height;
+
+        // tweaks:
+        _faceOffset[0] += _faceScale[0] * FACECUTSETTINGS.ryDriftDx*Math.sin(detectState.ry);
+        _faceOffset[0] += _faceScale[0] * FACECUTSETTINGS.rzDriftDx*Math.sin(detectState.rz);
+      }
+
+
+      // public dynamic methods:
+      const that = {
+        // getters:
+        get_faceScale: function(){
+          return _faceScale;
+        },
+        get_faceOffset: function(){
+          return _faceOffset;
+        },
+        get_rz: function(){
+          return _rz;
+        },
+
+        bind_hueTexture: function(){
+          GL.bindTexture(GL.TEXTURE_2D, _glHueTexture);
+        },
+
+        cut: function(detectState){
+          GL.bindFramebuffer(__fboDrawTarget, __fbo); // for RTT
+          GL.disable(GL.BLEND);
+
+          // compute normalized detection parameters:
+          compute_faceScaleOffset(detectState);
+
+          // cut the face:
+          GL.useProgram(__shps.faceCut.program);
+          GL.framebufferTexture2D(GL.FRAMEBUFFER, GL.COLOR_ATTACHMENT0, GL.TEXTURE_2D, _glFaceCutTexture, 0);
+          GL.viewport(0, 0, specFaceCut.sizePx, specFaceCut.sizePx);
+          GL.uniform1f(__shps.faceCut.uniforms.rz, -_rz);
+          GL.uniform1f(__shps.faceCut.uniforms.aspectRatio, FACECUTSETTINGS.scale[0]/FACECUTSETTINGS.scale[1]);
+          GL.uniform2fv(__shps.faceCut.uniforms.offset, _faceOffset);
+          GL.uniform2fv(__shps.faceCut.uniforms.scale, _faceScale);
+          GL.uniformMatrix2fv(__shps.faceCut.uniforms.videoTransformMat2, false, __videoTransformMat2);
+          GL.bindTexture(GL.TEXTURE_2D, __glVideoTexture);
+          fill_viewport();
+
+          // compute the color correction texture:
+          GL.useProgram(__shps.copy.program);
+          GL.framebufferTexture2D(GL.FRAMEBUFFER, GL.COLOR_ATTACHMENT0, GL.TEXTURE_2D, _glHueTexture, 0);
+          GL.viewport(0, 0, specFaceCut.hueSizePx, specFaceCut.hueSizePx);
+          GL.bindTexture(GL.TEXTURE_2D, _glFaceCutTexture);
+          GL.generateMipmap(GL.TEXTURE_2D);
+          fill_viewport();          
+        }, //end cut()
+
+        render: function(faceCutPos){ // render this faceCut on the same place than faceCutPos
+          // set good blending: 
+          GL.enable(GL.BLEND);
+          GL.blendFunc(GL.SRC_ALPHA, GL.ONE_MINUS_SRC_ALPHA);
+          GL.blendEquationSeparate( GL.FUNC_ADD, GL.FUNC_ADD );
+          GL.blendFuncSeparate( GL.SRC_ALPHA, GL.ONE_MINUS_SRC_ALPHA, GL.ONE, GL.ONE_MINUS_SRC_ALPHA );
+          
+          // compute normalized detection parameters:
+          const faceScale = faceCutPos.get_faceScale();
+          const faceOffset = faceCutPos.get_faceOffset();
+          
+          // play on the viewport to render at a specific position:
+          const vpx = faceOffset[0]*__canvas.width; // in pixels
+          const vpy = faceOffset[1]*__canvas.height;
+          const vpw = faceScale[0]*__canvas.width;
+          const vph = faceScale[1]*__canvas.height;
+          GL.viewport(Math.round(vpx-vpw/2), Math.round(vpy-vph/2), Math.round(vpw), Math.round(vph));
+          
+          GL.useProgram(__shps.renderFace.program);
+          GL.uniform1f(__shps.renderFace.uniforms.rz, _rz-faceCutPos.get_rz());
+          GL.uniform1f(__shps.renderFace.uniforms.aspectRatio, FACECUTSETTINGS.scale[0]/FACECUTSETTINGS.scale[1]);
+
+
+          GL.activeTexture(GL.TEXTURE2); // hue source
+          GL.bindTexture(GL.TEXTURE_2D, _glHueTexture);
+          GL.activeTexture(GL.TEXTURE1); // hue destination
+          faceCutPos.bind_hueTexture();
+          GL.activeTexture(GL.TEXTURE0); // faceCut image
+          GL.bindTexture(GL.TEXTURE_2D, _glFaceCutTexture);
+
+          fill_viewport();
+          GL.disable(GL.BLEND);
+        }
+
+      }; //end that;
+      return that;
+    } //end instance()
+  }; //end superThat
+  return superThat;
+})();
+
+
+// Export ES6 module:
+try {
+  module.exports = JeelizFaceCut;
+} catch(e){
+  console.log('JeelizFaceCut ES6 Module not exported');
+}

thirdparty/jeeliz/helpers/JeelizResizer.js

@@ -0,0 +1,328 @@
+/*
+This helper can help for:
+* adjusting the canvas resolution to the good size -> this is crucial to
+optimize the code because if the canvas is too large,
+there are too much pixels to compute => it will be slow
+
+* to mirror horizontally or not the canvas -> if the front camera is used we
+need it flipped (mirror effect), while if the rear camera is used we need it not flipped
+
+* to get the best camera resolution (either above the canvas resolution or closer)
+to balance between performance and quality
+*/ 
+"use strict";
+
+const JeelizResizer = (function(){
+  // private vars:
+  let _domCanvas = null,
+      _whCanvasPx = null,
+      _isApplyCSS = false,
+      _resizeAttemptsCounter = 0,
+      _overSamplingFactor = 1,
+      _isFullScreen = false,
+      _timerFullScreen = null,
+      _callbackResize = null,
+      _isInvFullscreenWH = false;
+
+  const _cameraResolutions = [ // all resolutions should be in landscape mode
+    [640,480],
+    [768,480],
+    [800,600],
+    [960,640],
+    [960,720],
+    [1024,768],
+    [1280,720],
+    [1920, 1080]
+  ];
+  
+  //private functions
+  function add_CSStransform(domElement, CSS){
+    const CSStransform = domElement.style.transform;
+    if (CSStransform.indexOf(CSS) !== -1) return;
+    domElement.style.transform = CSS + ' ' + CSStransform;
+  }
+
+  // Compute overlap between 2 rectangles A and B
+  // characterized by their width and their height in pixels
+  // the rectangles are centered
+  // return the ratio (pixels overlaped)/(total pixels)
+  function compute_overlap(whA, whB){ 
+    const aspectRatioA = whA[0] / whA[1];
+    const aspectRatioB = whB[0] / whB[1]; //higher aspectRatio -> more landscape
+    
+    var whLandscape, whPortrait;
+    if (aspectRatioA > aspectRatioB){ 
+      whLandscape = whA, whPortrait = whB;
+    } else {
+      whLandscape = whB, whPortrait = whA;
+    }
+
+    // The overlapped area will be always a rectangle
+    const areaOverlap = Math.min(whLandscape[0], whPortrait[0]) * Math.min(whLandscape[1], whPortrait[1]);
+    
+    var areaTotal;
+    if (whLandscape[0]>=whPortrait[0] && whLandscape[1]>=whPortrait[1]){ //union is a rectangle
+      areaTotal = whLandscape[0]*whLandscape[1];
+    } else if (whPortrait[0]>whLandscape[0] && whPortrait[1]>whLandscape[1]){ //union is a rectangle
+      areaTotal = whPortrait[0]*whPortrait[1];
+    } else { //union is a cross
+      areaTotal = whLandscape[0]*whLandscape[1];
+      areaTotal += (whPortrait[1]-whLandscape[1])*whPortrait[0];
+    }
+
+    return areaOverlap / areaTotal;
+  } //end compute_overlap()
+
+  function update_sizeCanvas(){
+    const domRect = _domCanvas.getBoundingClientRect();
+    apply_sizeCanvas(domRect.width, domRect.height);
+  }
+
+  function apply_sizeCanvas(width, height){
+    _whCanvasPx = [
+      Math.round(_overSamplingFactor * width),
+      Math.round(_overSamplingFactor * height)
+    ];
+
+    // set canvas resolution:
+    _domCanvas.setAttribute('width',  _whCanvasPx[0]);
+    _domCanvas.setAttribute('height', _whCanvasPx[1]);
+
+    // canvas display size:
+    if (_isApplyCSS){
+      _domCanvas.style.width = width.toString() + 'px';
+      _domCanvas.style.height = height.toString() + 'px';
+    }
+  }
+
+  function on_windowResize(){
+    // avoid to resize too often using a timer
+    // (it can create weird bug with some browsers)
+    if (_timerFullScreen){
+      clearTimeout(_timerFullScreen);
+    }
+    _timerFullScreen = setTimeout(resize_fullScreen, 50);
+  }
+
+  function resize_canvasToFullScreen(){
+    const wh = [window['innerWidth'], window['innerHeight']];
+    if (_isInvFullscreenWH){
+      wh.reverse();
+    }
+    apply_sizeCanvas(wh[0], wh[1]);
+  }
+
+  function resize_fullScreen(){
+    resize_canvasToFullScreen();
+    JEELIZFACEFILTER.resize();
+    _timerFullScreen = null;
+    if (_callbackResize) {
+      _callbackResize();
+    }
+  }
+
+  // public methods:
+  const that = {
+    // return true or false if the device is in portrait or landscape mode
+    // see https://stackoverflow.com/questions/4917664/detect-viewport-orientation-if-orientation-is-portrait-display-alert-message-ad
+    is_portrait: function(){
+      try{
+        if (window['matchMedia']("(orientation: portrait)")['matches']){
+          return true;
+        } else {
+          return false;
+        }
+      } catch(e){
+        return (window['innerHeight'] > window['innerWidth']);
+      }
+    },
+
+    // check whether the user is using IOS or not
+    // see https://stackoverflow.com/questions/9038625/detect-if-device-is-ios
+    check_isIOS: function(){
+      const isIOS = /iPad|iPhone|iPod/.test(navigator['userAgent']) && !window['MSStream'];
+      return isIOS;
+    },
+
+    // Should be called only if IOS was detected
+    // see https://stackoverflow.com/questions/8348139/detect-ios-version-less-than-5-with-javascript
+    get_IOSVersion: function(){ 
+      const v = (navigator['appVersion']).match(/OS (\d+)_(\d+)_?(\d+)?/);
+      return (v.length > 2) ? [parseInt(v[1], 10), parseInt(v[2], 10), parseInt(v[3] || 0, 10)] : [0, 0, 0];
+    },
+
+    // Check whether the user is using Android or not
+    // see https://stackoverflow.com/questions/6031412/detect-android-phone-via-javascript-jquery
+    check_isAndroid: function(){
+      const ua = navigator['userAgent'].toLowerCase();
+      return (ua.indexOf('android') !== -1);
+    },
+
+    // Should be called only if Android was detected
+    // see https://stackoverflow.com/questions/7184573/pick-up-the-android-version-in-the-browser-by-javascript
+    get_androidVersion: function(){
+      const ua = navigator['userAgent'].toLowerCase(); 
+      const match = ua.match(/android\s([0-9\.]*)/i);
+      if (!match || match.length<2){
+        return [0,0,0];
+      }
+      const v = match[1].split('.');
+      return [
+        parseInt(v[0], 10),
+        parseInt(v[1], 10),
+        parseInt(v[2] || 0, 10)
+      ];
+    },
+
+    // to get a video of 480x640 (480 width and 640 height)
+    // with a mobile phone in portrait mode, the default implementation
+    // should require a 480x640 video (Chrome, Firefox)
+    // but bad implementations needs to always request landscape resolutions (so 640x480)
+    // see https://github.com/jeeliz/jeelizFaceFilter/issues/144
+    require_flipVideoWHIfPortrait: function(){
+      // disabled because of https://github.com/jeeliz/jeelizFaceFilter/issues/144
+      // seems quite a mess though...
+      
+      /* if (that.check_isIOS()){
+        //the user is using IOS
+        const version = that.get_IOSVersion();
+        if (version[0] >= 13){
+          if (version[1] <= 1 // IOS 13.0.X
+              || (version[1] === 1 && version[2] < 3)){ // IOS 13.1.X with X<3
+            return false;
+          }
+        }
+      }
+
+      if (that.check_isAndroid()){
+        const version = that.get_androidVersion();
+        if (version[0] >= 9){ // Android 9+
+          return false;
+        }
+      } */
+
+      // normal implementation
+      return false;
+    },
+
+    // size canvas to the right resolution
+    // should be called after the page loading
+    // when the canvas has already the right size
+    // options:
+    //  - <string> canvasId: id of the canvas
+    //  - <HTMLCanvasElement> canvas: if canvasId is not provided
+    //  - <function> callback: function to launch if there was an error or not
+    //  - <float> overSamplingFactor: facultative. If 1, same resolution than displayed size (default). 
+    //    If 2, resolution twice higher than real size
+    //  - <boolean> CSSFlipX: if we should flip the canvas or not. Default: false
+    //  - <boolean> isFullScreen: if we should set the canvas fullscreen. Default: false
+    //  - <function> onResize: function called when the window is resized. Only enabled if isFullScreen = true
+    //  - <boolean> isInvWH: if we should invert width and height for fullscreen mode only. default = false
+    //  - <boolean> isApplyCSS: if we should also apply canvas dimensions as CSS. default = false
+    size_canvas: function(optionsArg){
+      const options = Object.assign({
+        canvasId: 'undefinedCanvasId',
+        canvas: null,
+        overSamplingFactor: window.devicePixelRatio || 1,
+
+        isFullScreen: false,
+        isInvWH: false,
+        CSSFlipX: false,
+        isApplyCSS: false,
+        
+        onResize: null,
+        callback: function(){}
+      }, optionsArg);
+
+      _domCanvas = (options.canvas) ? options.canvas : document.getElementById(options.canvasId);
+      _isFullScreen = options.isFullScreen;
+      _isInvFullscreenWH = options.isInvWH;
+      _isApplyCSS = options.isApplyCSS;
+      _overSamplingFactor = options.overSamplingFactor;
+
+      if (_isFullScreen){
+        // we are in fullscreen mode
+        _callbackResize = options.onResize;
+        
+        resize_canvasToFullScreen();
+        window.addEventListener('resize', on_windowResize, false);
+        window.addEventListener('orientationchange', on_windowResize, false);
+        
+      } else { // not fullscreen mode
+
+        // get display size of the canvas:
+        const domRect = _domCanvas.getBoundingClientRect();
+        if (domRect.width===0 || domRect.height===0){
+          console.log('WARNING in JeelizResize.size_canvas(): the canvas has its width or its height null, Retry a bit later...');
+          if (++_resizeAttemptsCounter > 20){
+            options.callback('CANNOT_RESIZECANVAS');
+            return;
+          }
+          setTimeout(that.size_canvas.bind(null, options), 50);
+          return;
+        }
+
+        // do resize canvas:
+        _resizeAttemptsCounter = 0;        
+        update_sizeCanvas();
+      }
+
+      // flip horizontally if required:
+      if (options.CSSFlipX){
+        add_CSStransform(_domCanvas, 'rotateY(180deg)');
+      }
+
+      // compute the best camera resolutions:
+      const allResolutions = _cameraResolutions.map(function(x){
+        return x.slice(0)
+      });
+
+      // if we are in portrait mode, the camera is also in portrait mode
+      // so we need to set all resolutions to portrait mode
+      if (that.is_portrait() && that.require_flipVideoWHIfPortrait()){
+        allResolutions.forEach(function(wh){
+          wh.reverse();
+        });
+      }
+
+      // sort camera resolutions from the best to the worst:
+      allResolutions.sort(function(resA, resB){
+        return compute_overlap(resB, _whCanvasPx) - compute_overlap(resA, _whCanvasPx);        
+      });
+
+      // pick the best camera resolution:
+      const bestCameraResolution = {
+        'idealWidth':  allResolutions[0][0],
+        'idealHeight': allResolutions[0][1]
+      };
+
+      console.log('INFO in JeelizResizer: bestCameraResolution =', bestCameraResolution);
+
+      // launch the callback function after a small interval to let it
+      // some time to size:
+      setTimeout(options.callback.bind(null, false, bestCameraResolution), 1);
+    }, //end size_canvas()
+
+    // Should be called if the canvas is resized to update the canvas resolution:
+    resize_canvas: function(){
+      if (_isFullScreen){
+        resize_canvasToFullScreen()        
+      } else {
+        update_sizeCanvas();
+      }
+    },
+
+    get_canvasSize: function(){
+      return _whCanvasPx;
+    }
+  }; //end that
+  return that;
+})();
+
+// Export ES6 module:
+try {
+  module.exports = JeelizResizer;
+} catch(e){
+  console.log('JeelizResizer ES6 Module not exported');
+  window.JeelizResizer = JeelizResizer;
+}

thirdparty/jeeliz/helpers/JeelizThreeHelper.js

@@ -0,0 +1,446 @@
+/*
+  Helper for Three.js
+*/
+
+const JeelizThreeHelper = (function(){
+  // internal settings:
+  const _settings = {
+    rotationOffsetX: 0.0, // negative -> look upper. in radians
+    pivotOffsetYZ: [0.2, 0.6],// YZ of the distance between the center of the cube and the pivot
+    
+    detectionThreshold: 0.8, // sensibility, between 0 and 1. Less -> more sensitive
+    detectionHysteresis: 0.02,
+
+    //tweakMoveYRotateX: 0,//0.5, // tweak value: move detection window along Y axis when rotate the face around X (look up <-> down)
+    
+    cameraMinVideoDimFov: 35 // Field of View for the smallest dimension of the video in degrees
+  };
+
+  // private vars:
+  let _threeRenderer = null,
+      _threeScene = null,
+      _threeVideoMesh = null,
+      _threeVideoTexture = null,
+      _threeTranslation = null;
+
+  let _maxFaces = -1,
+      _isMultiFaces = false,
+      _detectCallback = null,
+      _isVideoTextureReady = false,
+      _isSeparateThreeCanvas = false,
+      _faceFilterCv = null,
+      _videoElement = null,
+      _isDetected = false,
+      _scaleW = 1,
+      _canvasAspectRatio = -1;
+
+  const _threeCompositeObjects = [];
+    
+  let _gl = null,
+      _glVideoTexture = null,
+      _glShpCopyCut = null,
+      _glShpCopyCutVideoMatUniformPointer = null;
+
+  let _videoTransformMat2 = null;
+
+  // private funcs:
+  function destroy(){
+    _isVideoTextureReady = false;
+    _threeCompositeObjects.splice(0);
+    if (_threeVideoTexture){
+      _threeVideoTexture.dispose();
+      _threeVideoTexture = null;
+    }
+  }
+
+  function create_threeCompositeObjects(){
+    for (let i=0; i<_maxFaces; ++i){
+      // COMPOSITE OBJECT WHICH WILL TRACK A DETECTED FACE
+      const threeCompositeObject = new THREE.Object3D();
+      threeCompositeObject.frustumCulled = false;
+      threeCompositeObject.visible = false;
+
+      _threeCompositeObjects.push(threeCompositeObject);
+      _threeScene.add(threeCompositeObject);
+    }
+  }
+
+  function create_videoScreen(){
+    const videoScreenVertexShaderSource = "attribute vec2 position;\n\
+        uniform mat2 videoTransformMat2;\n\
+        varying vec2 vUV;\n\
+        void main(void){\n\
+          gl_Position = vec4(position, 0., 1.);\n\
+          vUV = 0.5 + videoTransformMat2 * position;\n\
+        }";
+    const videoScreenFragmentShaderSource = "precision lowp float;\n\
+        uniform sampler2D samplerVideo;\n\
+        varying vec2 vUV;\n\
+        void main(void){\n\
+          gl_FragColor = texture2D(samplerVideo, vUV);\n\
+        }";
+
+    if (_isSeparateThreeCanvas){
+      const compile_shader = function(source, type, typeString) {
+        const glShader = _gl.createShader(type);
+        _gl.shaderSource(glShader, source);
+        _gl.compileShader(glShader);
+        if (!_gl.getShaderParameter(glShader, _gl.COMPILE_STATUS)) {
+          alert("ERROR IN " + typeString + " SHADER: " + _gl.getShaderInfoLog(glShader));
+          return null;
+        }
+        return glShader;
+      };
+
+      const glShaderVertex =   compile_shader(videoScreenVertexShaderSource, _gl.VERTEX_SHADER, 'VERTEX');
+      const glShaderFragment = compile_shader(videoScreenFragmentShaderSource, _gl.FRAGMENT_SHADER, 'FRAGMENT');
+
+      _glShpCopyCut = _gl.createProgram();
+      _gl.attachShader(_glShpCopyCut, glShaderVertex);
+      _gl.attachShader(_glShpCopyCut, glShaderFragment);
+
+      _gl.linkProgram(_glShpCopyCut);
+      const samplerVideo = _gl.getUniformLocation(_glShpCopyCut, 'samplerVideo');
+      _glShpCopyCutVideoMatUniformPointer = _gl.getUniformLocation(_glShpCopyCut, 'videoTransformMat2');
+      
+      return;
+    }
+
+    // init video texture with red:
+    _threeVideoTexture = new THREE.DataTexture( new Uint8Array([255,0,0]), 1, 1, THREE.RGBFormat);
+    _threeVideoTexture.needsUpdate = true;
+
+    // CREATE THE VIDEO BACKGROUND:
+    const videoMaterial = new THREE.RawShaderMaterial({
+      depthWrite: false,
+      depthTest: false,
+      vertexShader: videoScreenVertexShaderSource,
+      fragmentShader: videoScreenFragmentShaderSource,
+      uniforms:{
+        samplerVideo: {value: _threeVideoTexture},
+        videoTransformMat2: {
+          value: _videoTransformMat2
+        }
+      }
+    });
+
+    const videoGeometry = new THREE.BufferGeometry()
+    const videoScreenCorners = new Float32Array([-1,-1,   1,-1,   1,1,   -1,1]);
+    videoGeometry.addAttribute( 'position', new THREE.BufferAttribute( videoScreenCorners, 2 ) );
+    videoGeometry.setIndex(new THREE.BufferAttribute(new Uint16Array([0,1,2, 0,2,3]), 1));
+    _threeVideoMesh = new THREE.Mesh(videoGeometry, videoMaterial);
+    that.apply_videoTexture(_threeVideoMesh);
+    _threeVideoMesh.renderOrder = -1000; // render first
+    _threeVideoMesh.frustumCulled = false;
+    _threeScene.add(_threeVideoMesh);
+  } //end create_videoScreen()
+
+  function detect(detectState){
+    _threeCompositeObjects.forEach(function(threeCompositeObject, i){
+      _isDetected = threeCompositeObject.visible;
+      const ds = detectState[i];
+      if (_isDetected && ds.detected < _settings.detectionThreshold-_settings.detectionHysteresis){
+        
+        // DETECTION LOST
+        if (_detectCallback) _detectCallback(i, false);
+        threeCompositeObject.visible = false;
+      } else if (!_isDetected && ds.detected > _settings.detectionThreshold+_settings.detectionHysteresis){
+        
+        // FACE DETECTED
+        if (_detectCallback) _detectCallback(i, true);
+        threeCompositeObject.visible = true;
+      }
+    }); //end loop on all detection slots
+  }
+
+  function update_poses(ds, threeCamera){
+    // tan( <horizontal FoV> / 2 ):
+    const halfTanFOVX = Math.tan(threeCamera.aspect * threeCamera.fov * Math.PI/360); //tan(<horizontal FoV>/2), in radians (threeCamera.fov is vertical FoV)
+
+    _threeCompositeObjects.forEach(function(threeCompositeObject, i){
+      if (!threeCompositeObject.visible) return;
+      const detectState = ds[i];
+
+      // tweak Y position depending on rx:
+      //const tweak = _settings.tweakMoveYRotateX * Math.tan(detectState.rx);
+      const cz = Math.cos(detectState.rz), sz = Math.sin(detectState.rz);
+      
+      // relative width of the detection window (1-> whole width of the detection window):
+      const W = detectState.s * _scaleW;
+
+      // distance between the front face of the cube and the camera:
+      const DFront = 1 / ( 2 * W * halfTanFOVX );
+      
+      // D is the distance between the center of the unit cube and the camera:
+      const D = DFront + 0.5;
+
+      // coords in 2D of the center of the detection window in the viewport:
+      const xv = detectState.x * _scaleW;
+      const yv = detectState.y * _scaleW;
+
+      // coords in 3D of the center of the cube (in the view coordinates system):
+      const z = -D;   // minus because view coordinate system Z goes backward
+      const x = xv * D * halfTanFOVX;
+      const y = yv * D * halfTanFOVX / _canvasAspectRatio;
+
+      // set position before pivot:
+      threeCompositeObject.position.set(-sz*_settings.pivotOffsetYZ[0], -cz*_settings.pivotOffsetYZ[0], -_settings.pivotOffsetYZ[1]);
+
+      // set rotation and apply it to position:
+      threeCompositeObject.rotation.set(detectState.rx+_settings.rotationOffsetX, detectState.ry, detectState.rz, "ZYX");
+      threeCompositeObject.position.applyEuler(threeCompositeObject.rotation);
+
+      // add translation part:
+      _threeTranslation.set(x, y+_settings.pivotOffsetYZ[0], z+_settings.pivotOffsetYZ[1]);
+      threeCompositeObject.position.add(_threeTranslation);
+    }); //end loop on composite objects
+  }
+
+  //public methods:
+  const that = {
+    // launched with the same spec object than callbackReady. set spec.threeCanvasId to the ID of the threeCanvas to be in 2 canvas mode:
+    init: function(spec, detectCallback){
+      destroy();
+
+      _maxFaces = spec.maxFacesDetected;
+      _glVideoTexture = spec.videoTexture;
+      _videoTransformMat2 = spec.videoTransformMat2;
+      _gl = spec.GL;
+      _faceFilterCv = spec.canvasElement;
+      _isMultiFaces = (_maxFaces>1);
+      _videoElement = spec.videoElement;
+
+      // enable 2 canvas mode if necessary:
+      let threeCanvas = null;
+      if (spec.threeCanvasId){
+        _isSeparateThreeCanvas = true;
+        // adjust the threejs canvas size to the threejs canvas:
+        threeCanvas = document.getElementById(spec.threeCanvasId);
+        threeCanvas.setAttribute('width', _faceFilterCv.width);
+        threeCanvas.setAttribute('height', _faceFilterCv.height);
+      } else {
+        threeCanvas = _faceFilterCv;
+      }
+
+      if (typeof(detectCallback) !== 'undefined'){
+        _detectCallback = detectCallback;
+      }
+
+       // init THREE.JS context:
+      _threeRenderer = new THREE.WebGLRenderer({
+        context: (_isSeparateThreeCanvas) ? null : _gl,
+        canvas: threeCanvas,
+        alpha: (_isSeparateThreeCanvas || spec.alpha) ? true : false
+      });
+
+      _threeScene = new THREE.Scene();
+      _threeTranslation = new THREE.Vector3();
+
+      create_threeCompositeObjects();
+      create_videoScreen();
+
+      // handle device orientation change:
+      window.addEventListener('orientationchange', function(){
+        setTimeout(JEELIZFACEFILTER.resize, 1000);
+      }, false);
+      
+      const returnedDict = {
+        videoMesh: _threeVideoMesh,
+        renderer: _threeRenderer,
+        scene: _threeScene
+      };
+      if (_isMultiFaces){
+        returnedDict.faceObjects = _threeCompositeObjects
+      } else {
+        returnedDict.faceObject = _threeCompositeObjects[0];
+      }
+      return returnedDict;
+    }, //end that.init()
+
+    detect: function(detectState){
+      const ds = (_isMultiFaces) ? detectState : [detectState];
+
+      // update detection states:
+      detect(ds);
+    },
+
+    get_isDetected: function() {
+      return _isDetected;
+    },
+
+    render: function(detectState, threeCamera){
+      const ds = (_isMultiFaces) ? detectState : [detectState];
+
+      // update detection states then poses:
+      detect(ds);
+      update_poses(ds, threeCamera);
+
+      if (_isSeparateThreeCanvas){
+        // render the video texture on the faceFilter canvas:
+        _gl.viewport(0, 0, _faceFilterCv.width, _faceFilterCv.height);
+        _gl.useProgram(_glShpCopyCut);
+        _gl.uniformMatrix2fv(_glShpCopyCutVideoMatUniformPointer, false, _videoTransformMat2);
+        _gl.activeTexture(_gl.TEXTURE0);
+        _gl.bindTexture(_gl.TEXTURE_2D, _glVideoTexture);
+        _gl.drawElements(_gl.TRIANGLES, 3, _gl.UNSIGNED_SHORT, 0);
+      } else {
+        // reinitialize the state of THREE.JS because JEEFACEFILTER have changed stuffs:
+        // -> can be VERY costly !
+        _threeRenderer.state.reset();        
+      }
+
+      // trigger the render of the THREE.JS SCENE:
+      _threeRenderer.render(_threeScene, threeCamera);
+    },
+
+    sortFaces: function(bufferGeometry, axis, isInv){ // sort faces long an axis
+      // Useful when a bufferGeometry has alpha: we should render the last faces first
+      const axisOffset = {X:0, Y:1, Z:2}[axis.toUpperCase()];
+      const sortWay = (isInv) ? -1 : 1;
+
+      // fill the faces array:
+      const nFaces = bufferGeometry.index.count/3;
+      const faces = new Array(nFaces);
+      for (let i=0; i<nFaces; ++i){
+        faces[i] = [bufferGeometry.index.array[3*i], bufferGeometry.index.array[3*i+1], bufferGeometry.index.array[3*i+2]];
+      }
+
+      // compute centroids:
+      const aPos = bufferGeometry.attributes.position.array;
+      const centroids = faces.map(function(face, faceIndex){
+        return [
+          (aPos[3*face[0]]+aPos[3*face[1]]+aPos[3*face[2]])/3,       // X
+          (aPos[3*face[0]+1]+aPos[3*face[1]+1]+aPos[3*face[2]+1])/3, // Y
+          (aPos[3*face[0]+2]+aPos[3*face[1]+2]+aPos[3*face[2]+2])/3, // Z
+          face
+        ];
+      });
+
+      // sort centroids:
+      centroids.sort(function(ca, cb){
+        return (ca[axisOffset]-cb[axisOffset]) * sortWay;
+      });
+
+      // reorder bufferGeometry faces:
+      centroids.forEach(function(centroid, centroidIndex){
+        const face = centroid[3];
+        bufferGeometry.index.array[3*centroidIndex] = face[0];
+        bufferGeometry.index.array[3*centroidIndex+1] = face[1];
+        bufferGeometry.index.array[3*centroidIndex+2] = face[2];
+      });
+    }, //end sortFaces
+
+    get_threeVideoTexture: function(){
+      return _threeVideoTexture;
+    },
+
+    apply_videoTexture: function(threeMesh){
+      if (_isVideoTextureReady){
+        return;
+      }
+      threeMesh.onAfterRender = function(){
+        // Replace _threeVideoTexture.__webglTexture by the real video texture:
+        try {
+          _threeRenderer.properties.update(_threeVideoTexture, '__webglTexture', _glVideoTexture);
+          _threeVideoTexture.magFilter = THREE.LinearFilter;
+          _threeVideoTexture.minFilter = THREE.LinearFilter;
+          _isVideoTextureReady = true;
+        } catch(e){
+          console.log('WARNING in JeelizThreeHelper: the glVideoTexture is not fully initialized');
+        }
+        delete(threeMesh.onAfterRender);
+      };
+    },
+
+    // create an occluder, IE a transparent object which writes on the depth buffer:
+    create_threejsOccluder: function(occluderURL, callback){
+      const occluderMesh = new THREE.Mesh();
+      new THREE.BufferGeometryLoader().load(occluderURL, function(occluderGeometry){
+        const mat = new THREE.ShaderMaterial({
+          vertexShader: THREE.ShaderLib.basic.vertexShader,
+          fragmentShader: "precision lowp float;\n void main(void){\n gl_FragColor=vec4(1.,0.,0.,1.);\n }",
+          uniforms: THREE.ShaderLib.basic.uniforms,
+          colorWrite: false
+        });
+        
+        occluderMesh.renderOrder = -1; //render first
+        occluderMesh.material = mat;
+        occluderMesh.geometry = occluderGeometry;
+        if (typeof(callback)!=='undefined' && callback) callback(occluderMesh);
+      });
+      return occluderMesh;
+    },
+    
+    set_pivotOffsetYZ: function(pivotOffset) {
+      _settings.pivotOffsetYZ = pivotOffset;
+    },
+
+    create_camera: function(zNear, zFar){
+      const threeCamera = new THREE.PerspectiveCamera(1, 1, (zNear) ? zNear : 0.1, (zFar) ? zFar : 100);
+      that.update_camera(threeCamera);
+
+      return threeCamera;
+    },
+
+    update_camera: function(threeCamera){
+      // compute aspectRatio:
+      const canvasElement = _threeRenderer.domElement;
+      const cvw = canvasElement.width;
+      const cvh = canvasElement.height;
+      _canvasAspectRatio = cvw / cvh;
+
+      // compute vertical field of view:
+      const vw = _videoElement.videoWidth;
+      const vh = _videoElement.videoHeight;
+      const videoAspectRatio = vw / vh;
+      const fovFactor = (vh > vw) ? (1.0 / videoAspectRatio) : 1.0;
+      const fov = _settings.cameraMinVideoDimFov * fovFactor;
+      console.log('INFO in JeelizThreeHelper - update_camera(): Estimated vertical video FoV is', fov);
+      
+      // compute X and Y offsets in pixels:
+      let scale = 1.0;
+      if (_canvasAspectRatio > videoAspectRatio) {
+        // the canvas is more in landscape format than the video, so we crop top and bottom margins:
+        scale = cvw / vw;
+      } else {
+        // the canvas is more in portrait format than the video, so we crop right and left margins:
+        scale = cvh / vh;
+      }
+      const cvws = vw * scale, cvhs = vh * scale;
+      const offsetX = (cvws - cvw) / 2.0;
+      const offsetY = (cvhs - cvh) / 2.0;
+      _scaleW = cvw / cvws;
+
+      // apply parameters:
+      threeCamera.aspect = _canvasAspectRatio;
+      threeCamera.fov = fov;
+      console.log('INFO in JeelizThreeHelper.update_camera(): camera vertical estimated FoV is', fov, 'deg');
+      threeCamera.setViewOffset(cvws, cvhs, offsetX, offsetY, cvw, cvh);
+      threeCamera.updateProjectionMatrix();
+
+      // update drawing area:
+      _threeRenderer.setSize(cvw, cvh, false);
+      _threeRenderer.setViewport(0, 0, cvw, cvh);
+    }, //end update_camera()
+
+    resize: function(w, h, threeCamera){
+      _threeRenderer.domElement.width = w;
+      _threeRenderer.domElement.height = h;
+      JEELIZFACEFILTER.resize();
+      if (threeCamera){
+        that.update_camera(threeCamera);
+      }
+    }
+  }
+  return that;
+})();
+
+
+// Export ES6 module:
+try {
+  module.exports = JeelizThreeHelper;
+} catch(e){
+  console.error(e);
+  console.log('JeelizThreeHelper ES6 Module not exported');  
+  window.JeelizThreeHelper = JeelizThreeHelper;
+}

thirdparty/jeeliz/helpers/README.md

@@ -0,0 +1,9 @@
+# Helpers
+
+Helper scripts used by several categories of demos. They can hide the complexity of the lib.
+
+* `Canvas2DDisplay.js`: see [canvas 2D - face detection and tracking demo](https://jeeliz.com/demos/faceFilter/demos/canvas2D/faceTrack/). Helper for Canvas2D rendering.
+* `HeadControls.js`: see Head controlled demos ([Head controlled Pacman](https://jeeliz.com/demos/faceFilter/demos/pacman/) for example)
+* `JeelizThreeHelper.js`: cf [THREE.JS multiple face tracking demo](https://jeeliz.com/demos/faceFilter/demos/threejs/multiCubes/)
+* `JeelizResize.js`: Helper to find the best canvas and webcam resolutions. Explained [in the Optimization section of the main README](https://github.com/jeeliz/jeelizFaceFilter#optimization)
+* `JeelizFaceCut.js`: Helper to cut the face in 2D from the video, and processing color correction. It is used in the [FaceSwap demo](https://jeeliz.com/demos/faceFilter/demos/faceReplacement/faceSwap/)

thirdparty/jeeliz/helpers/addDragEventListener.js

@@ -0,0 +1,151 @@
+"use strict";
+
+const _states = {
+  idle     : 0,
+  loading  : 1,
+  dragging : 2
+}
+let _state = _states.idle; // MT217 : initialize your state always (even with a loading value)
+
+let _dP = new window.THREE.Vector3();
+let _x0 = -1; let _y0 = -1;
+let _scenes = null;
+let _boundFunction = null;
+
+function updateMeshPosition(canvas, event) {
+  const MOUSEVECTOR = new window.THREE.Vector3();
+  const DIRECTIONVECTOR = new window.THREE.Vector3();
+  const VIEWPORTVECTOR = new window.THREE.Vector3();
+  const _headCenterZ = -1;
+
+  if (_state !== _states.dragging) return; // MT217
+
+  const isTouch = !!((event.touches && event.touches.length));// MT217 is touch or mouse event ?
+
+  const xPx = (isTouch) ? event.touches[0].clientX : event.clientX; // MT217 : make the distinction between touch and mouse event
+  const yPx = (isTouch) ? event.touches[0].clientY : event.clientY; // if touch event, consider only the first finger
+
+  const dxPx = xPx - _x0; // in pixels
+  const dyPx = yPx - _y0; // in pixels too
+
+  _x0 = xPx;
+  _y0 = yPx;
+
+  // calcul des coo de dxPx, dyPx dans le viewport
+  // les offsets du canvas s'annulent -> que facteur d'échelle a appliquer
+  const dx = -dxPx / canvas.offsetWidth;
+  const dy = -dyPx / canvas.offsetHeight;
+
+  // Only check intersects if object is visible
+  // If there is only 1 object, we don't check intersections too
+  const mesh = (_scenes.length === 1) ? _scenes[0] : _scenes.find( function(scene){
+    if (!scene.parent.visible) {
+      return false;
+    }
+    // TODO: Check if a child geometry is an occlusion object. If so remove it from the intersection list
+    MOUSEVECTOR.set(-(xPx / canvas.offsetWidth) * 2 + 1, -(yPx / canvas.offsetHeight) * 2 + 1, 0.5);
+    const raycaster = new window.THREE.Raycaster();
+    raycaster.setFromCamera(MOUSEVECTOR, window.THREECAMERA);
+
+    const intersects = raycaster.intersectObjects(scene.children);
+    return (intersects.length > 0);
+  });
+
+  if (!mesh) {
+    return;
+  }
+
+  VIEWPORTVECTOR.set(dx, dy, 1);
+
+  DIRECTIONVECTOR.copy(VIEWPORTVECTOR);
+  if (!window.THREECAMERA){
+    throw new Error('Cannot find the THREE.js camera. Please check that window.THREECAMERA is the default scene camera');
+  }
+  DIRECTIONVECTOR.unproject(window.THREECAMERA);
+  DIRECTIONVECTOR.sub(window.THREECAMERA.position);
+  DIRECTIONVECTOR.normalize();
+
+  // we calculate the coefficient that will allow us to find our mesh's position
+  const k = _headCenterZ / DIRECTIONVECTOR.z;
+
+  // _dP = displacement in the scene (=world) ref :
+  _dP.copy(DIRECTIONVECTOR).multiplyScalar(k);
+  _dP.setZ(0); // bcoz we only want to displace in the (0xy) plane
+
+  const _quat = new window.THREE.Quaternion();
+  const _eul = new window.THREE.Euler();
+  _eul.setFromQuaternion(_quat);
+
+  // convert _dP to mesh ref to apply it directly to mesh.position :
+  // _dP is a vector so apply only the rotation part (not the translation)
+  _dP.applyEuler(mesh.getWorldQuaternion(_eul));
+
+  // Boost movement to follow better the mouse/touch
+  _dP.multiplyScalar(10);
+
+  // apply _dP
+  mesh.position.add(_dP);
+}
+
+function setMousePosition0(event) { // save initial position of the mouse
+  const isTouch = !!((event.touches && event.touches.length));// MT217 is touch or mouse event ?
+
+  if (isTouch && event.touches.length > 1) return; // MT217 if the user put a second finger while dragging
+
+  _x0 = (isTouch) ? event.touches[0].clientX : event.clientX; // MT217
+  _y0 = (isTouch) ? event.touches[0].clientY : event.clientY;
+}
+
+function mouseDown(event) {
+  setMousePosition0(event); // MANTIS201
+  _state = _states.dragging;
+}
+
+function mouseUp() {
+  _state = _states.idle;
+}
+
+function addDragEventListener(scenes, canvasId, remove) {
+  _scenes = Array.isArray(scenes) ? scenes : [scenes];
+  const canvas = document.getElementById((typeof(canvasId) === 'undefined') ? 'jeeFaceFilterCanvas' : canvasId);
+
+  _state = _states.idle; // MT217 : initialize your state always (even with a loading value)
+
+  _dP = new window.THREE.Vector3();
+  _x0 = undefined; _y0 = undefined;
+  if (remove) {
+    // REMOVE OUR LISTENERS
+    canvas.removeEventListener('mousemove', _boundFunction, true);
+    canvas.removeEventListener('touchmove', _boundFunction, true);
+
+    // BEGINNING OF THE INTERACTION
+    canvas.removeEventListener('mousedown', mouseDown);
+    canvas.removeEventListener('touchstart', mouseDown);
+
+    // END OF THE INTERACTION
+    canvas.removeEventListener('mouseup', mouseUp);
+    canvas.removeEventListener('touchend', mouseUp);
+
+    // ALSO END BUT IN CASE LEAVING CANVAS OR ALERT BOX ECT...
+    canvas.removeEventListener('mouseout', mouseUp);
+    canvas.removeEventListener('touchcancel', mouseUp);
+  } else {
+    // SET OUR LISTENERS
+    _boundFunction = updateMeshPosition.bind(this, canvas)
+    canvas.addEventListener('mousemove', _boundFunction, true);
+    // canvas.addEventListener('touchmove', createTouchEvent, true)
+    canvas.addEventListener('touchmove', _boundFunction, true); // MT217
+
+    // BEGINNING OF THE INTERACTION
+    canvas.addEventListener('mousedown', mouseDown);
+    canvas.addEventListener('touchstart', mouseDown);
+
+    // END OF THE INTERACTION
+    canvas.addEventListener('mouseup', mouseUp);
+    canvas.addEventListener('touchend', mouseUp);
+
+    // ALSO END BUT IN CASE LEAVING CANVAS OR ALERT BOX ECT...
+    canvas.addEventListener('mouseout', mouseUp);
+    canvas.addEventListener('touchcancel', mouseUp);
+  }
+}

thirdparty/jeeliz/jeelizFaceFilter.js

@@ -0,0 +1,186 @@
+ /**
+ * Jeeliz Face Filter - https://github.com/jeeliz/jeelizFaceFilter
+ *
+ * Copyright 2020 WebAR.rocks ( https://webar.rocks )
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+*/
+
+var JEELIZFACEFILTER=(function(){window.JEELIZFACEFILTERGEN=function(){function Fb(a){var c=null,d=null,e=null,m=0;this.A=function(n){this.Cf(n.pb);e.Be({qc:n.qc,nc:n.nc})};this.We=function(n){return c[n]};this.Cf=function(n){var q=null;m=n.length;c=n.map(function(r,l){r=Object.assign({},r,{index:l,parent:this,vb:q,ff:l===m-1});return q=l=0===l?Gb.instance(r):Hb.instance(r)});d=c[0];e=c[m-1];c.forEach(function(r,l){0!==l&&r.uf()})};this.V=function(n){var q=n;c.forEach(function(r){q=r.V(q,!1)});return q};this.Ve=function(){return d.F()};
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thirdparty/jeeliz/modules/jeelizFaceFilter.module.js

@@ -0,0 +1,188 @@
+ /**
+ * Jeeliz Face Filter - https://github.com/jeeliz/jeelizFaceFilter
+ *
+ * Copyright 2020 WebAR.rocks ( https://webar.rocks )
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+*/
+
+/* eslint-disable */
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+i:["u39","u52","u51"]}]);sb();Pb();kb();jb();c()});return!0},destroy:function(){Ma.m();return new Promise(function(a){Eb.toggle_pause(!0,!0).finally(function(){Oa&&Oa.m();Qa.m();Oa=qa=Sa=null;hb.splice(0);ib.splice(0);Z.xa=null;X.Da=null;B.N=null;na=ia.lc;a()}).catch(function(){})})},toggle_pause:function(a,c){if(!Ya())return Promise.reject("NOT_READY");var d=null;d=B.jb?Promise.resolve():c?W.ce(B.element,!a,B.La):Promise.resolve();a?rb():d.then(function(){eb()});return d},update_videoSettings:function(a){rb();
+return new Promise(function(c,d){W.ce(B.element,!1,B.La).then(function(){Object.assign(oa,a);zb(null,null,function(e){$a(e,function(){Ja();Ia();eb();c()})})}).catch(d)})},toggle_slow:function(a){Ya()&&na===ia.play&&(a&&!Q.lb?(Q.Od=Q.fa,ea.nDetectsPerLoop=1,this.set_animateDelay(ba.Vf),Q.lb=!0):!a&&Q.lb&&(ea.nDetectsPerLoop=-1,this.set_animateDelay(Q.Od),Q.lb=!1))},set_animateDelay:function(a){Q.fa=a;Ma.update({ga:Q.fa})},resize:function(){if(!Ya())return!1;var a=Q.ia.width,c=Q.ia.height;if(!lb()&&
+a===Z.D&&c===Z.M)return!1;Z.D=a;Z.M=c;A.R();kb();jb();Ja();Ia();return!0},set_inputTexture:function(a,c,d){B.H[0]=c;B.H[1]=d;B.N=Y.instance({width:c,height:d,Zb:a});B.kb=!0;Ja();fb();Ia()},reset_GLState:function(){fb();Z.xa.remove();X.Da.remove();sb()},render_video:function(){va.P();A.set("s54");b.viewport(0,0,Z.D,Z.M);B.N.g(0);U.l(!0,!0)},reset_inputTexture:function(){B.kb=!1;B.N=B.zc;lb();Ja();Ia()},get_videoDevices:function(a){return W.Ye(a)},set_scanSettings:function(a){Object.assign(ea,a);-1!==
+ea.nDetectsPerLoop?pa.vc(ea.nDetectsPerLoop):pa.Gc();kb();jb()},set_stabilizationSettings:function(a){Object.assign(sa,a)},set_videoOrientation:function(a,c){Ya()&&(oa.flipX=c,oa.rotate=a,Ja(),Ia())},update_videoElement:function(a,c){$a(a?a:B.element,function(){xb();Ja();Ia();c&&c()})},create_new:function(){return JEELIZFACEFILTERGEN()}};return Eb};const JEELIZFACEFILTER=JEELIZFACEFILTERGEN();
+if(typeof(module)!=='undefined'){module.exports=JEELIZFACEFILTER;}
+/* eslint-enable */

thirdparty/jeeliz/modules/jeelizFaceFilter.moduleNoDOM.js

@@ -0,0 +1,258 @@
+ /**
+ * Jeeliz Face Filter - https://github.com/jeeliz/jeelizFaceFilter
+ *
+ * Copyright 2020 WebAR.rocks ( https://webar.rocks )
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+*/
+
+// BEGIN EMULATE DOM
+
+// import some usefull stuffs
+try {
+  var Buffer = require('buffer').Buffer;
+} catch(err) {
+  console.log('Cannot import Buffer package');
+}
+
+// emulate global variables:
+const navigator = {  
+  platform: "Linux x86_64",
+  userAgent: "forceWebGL1_noAntialiasing_noDOM"
+};
+
+const window = {
+  canvas: null,
+  innnerWidth: -1,
+  innerHeight: -1,
+  URL: {
+    createObjectURL: function() {
+      return null
+    }
+  },
+  addEventListener: function() {},
+  removeEventListener: function() {},
+  requestAnimationFrame: function(step) {
+    if (window.canvas === null){
+      setTimeout(step, 1);
+      return;
+    }
+    window.canvas.requestAnimationFrame(step)
+  },
+  cancelAnimationFrame: function(step) {
+    if (window.canvas === null){
+      return;
+    }
+    window.canvas.cancelAnimationFrame(step)
+  },
+  setCanvas: function(c) {
+    window.canvas = c;
+  }
+};
+
+const document = {
+  createElement: function(elementType){
+    switch(elementType){
+      case 'canvas':
+        return null; // return a real canvas
+    }
+  },
+  getElementById: function(elementId){
+    return null;
+  },
+  body: { appendChild: function(element){ return null; }}
+};
+
+if(typeof(wx) !== 'undefined'){ //WECHAT
+  const systemInfo = wx.getSystemInfoSync()
+  window.innnerWidth = systemInfo.windowWidth;
+  window.innnerHeight = systemInfo.windowHeight;
+}
+
+const FAKEDOM = {
+  window: window,
+  document: document,
+  navigator: navigator
+};
+// END EMULATE DOM
+
+
+window.JEELIZFACEFILTERGEN=function(){function Fb(a){var c=null,d=null,e=null,m=0;this.A=function(n){this.Cf(n.pb);e.Be({qc:n.qc,nc:n.nc})};this.We=function(n){return c[n]};this.Cf=function(n){var q=null;m=n.length;c=n.map(function(r,l){r=Object.assign({},r,{index:l,parent:this,vb:q,ff:l===m-1});return q=l=0===l?Gb.instance(r):Hb.instance(r)});d=c[0];e=c[m-1];c.forEach(function(r,l){0!==l&&r.uf()})};this.V=function(n){var q=n;c.forEach(function(r){q=r.V(q,!1)});return q};this.Ve=function(){return d.F()};
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+window.JEELIZFACEFILTER.FAKEDOM=FAKEDOM;

thirdparty/jeeliz/readme.md

@@ -0,0 +1,6 @@
+ Many of the files found in this folder are obtained from Jeeliz
+ 
+ jeelize/jeelizFaceFilter
+ Apache-2.0 License
+ 
+ https://github.com/jeeliz/jeelizFaceFilter/blob/master/LICENSE

thirdparty/readme.md

@@ -0,0 +1,3 @@
+This folder primarily contains third-party libraries; MIT/Apache2.0 licenced.
+
+Most the files are superficially needed and not required for the core function of VDO.Ninja; most anyways.