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<!DOCTYPE html>
<meta name="viewport" content="width=device-width, user-scalable=no, minimum-scale=1.0, maximum-scale=1.0">
<!-- three.js library -->
<script src='vendor/three.js/build/three.js'></script>
<script src="vendor/three.js/examples/js/libs/stats.min.js"></script>
<!-- jsartookit -->
<script src="../vendor/jsartoolkit5/build/artoolkit.min.js"></script>
<script src="../vendor/jsartoolkit5/js/artoolkit.api.js"></script>
<!-- include threex.artoolkit -->
<script src="../src/threex/threex-artoolkitsource.js"></script>
<script src="../src/threex/threex-artoolkitcontext.js"></script>
<script src="../src/threex/threex-artoolkitprofile.js"></script>
<script src="../src/threex/threex-arbasecontrols.js"></script>
<script src="../src/threex/threex-armarkercontrols.js"></script>
<script src="../src/threex/threex-armarkercloak.js"></script>
<script>THREEx.ArToolkitContext.baseURL = '../'</script>
<body style='margin : 0px; overflow: hidden; font-family: Monospace; user-select: none;'><div style='position: absolute; top: 10px; width:100%; text-align: center;z-index:1';>
<a href="https://github.com/jeromeetienne/AR.js/" target="_blank">AR.js</a> - Marker Invisibility Cloak - Click to toggle the cloak.
<br/>
Code by <a href="https://twitter.com/snigelpaogat" target='_blank'>Fredrik Blomqvist</a> and
<a href='https://twitter.com/jerome_etienne' target='_blank'>@jerome_etienne</a>
</div><script>
//////////////////////////////////////////////////////////////////////////////////
// Init
//////////////////////////////////////////////////////////////////////////////////
// init renderer
var renderer = new THREE.WebGLRenderer({
// antialias : true,
alpha: true
});
renderer.setClearColor(new THREE.Color('lightgrey'), 0)
// renderer.setPixelRatio( 2 );
renderer.setSize( window.innerWidth, window.innerHeight );
renderer.domElement.style.position = 'absolute'
renderer.domElement.style.top = '0px'
renderer.domElement.style.left = '0px'
document.body.appendChild( renderer.domElement );
renderer.autoClear = false;
// array of functions for the rendering loop
var onRenderFcts= [];
// init scene and camera
var scene = new THREE.Scene();
var ambient = new THREE.AmbientLight( 0x666666 );
scene.add( ambient );
var directionalLight = new THREE.DirectionalLight( 0x887766 );
directionalLight.position.set( -1, 1, 1 ).normalize();
scene.add( directionalLight );
//////////////////////////////////////////////////////////////////////////////////
// Initialize a basic camera
//////////////////////////////////////////////////////////////////////////////////
// Create a camera
var camera = new THREE.Camera();
scene.add(camera);
var debugEnabled = false
//////////////////////////////////////////////////////////////////////////////
// Code Separator
//////////////////////////////////////////////////////////////////////////////
if( debugEnabled === true ){
var orthoCamera = new THREE.OrthographicCamera(-1, 1, 1, -1, -100, +100);
var orthoScene = new THREE.Scene();
}
////////////////////////////////////////////////////////////////////////////////
// handle arToolkitSource
////////////////////////////////////////////////////////////////////////////////
var arToolkitSource = new THREEx.ArToolkitSource({
// to read from the webcam
sourceType : 'webcam',
// to read from an image
// sourceType : 'image',
// sourceUrl : THREEx.ArToolkitContext.baseURL + '../data/images/img.jpg',
// to read from a video
// sourceType : 'video',
// sourceUrl : THREEx.ArToolkitContext.baseURL + '../data/videos/headtracking.mp4',
})
arToolkitSource.init(function onReady(){
onResize()
})
// handle resize
window.addEventListener('resize', function(){
onResize()
})
function onResize(){
arToolkitSource.onResize()
arToolkitSource.copySizeTo(renderer.domElement)
if( arToolkitContext.arController !== null ){
arToolkitSource.copySizeTo(arToolkitContext.arController.canvas)
}
}
////////////////////////////////////////////////////////////////////////////////
// initialize arToolkitContext
////////////////////////////////////////////////////////////////////////////////
// create atToolkitContext
var arToolkitContext = new THREEx.ArToolkitContext({
cameraParametersUrl: THREEx.ArToolkitContext.baseURL + '../data/data/camera_para.dat',
detectionMode: 'mono',
imageSmoothingEnabled: false,
maxDetectionRate: 30,
canvasWidth: 80*4,
canvasHeight: 60*4,
})
// initialize it
arToolkitContext.init(function onCompleted(){
// copy projection matrix to camera
camera.projectionMatrix.copy( arToolkitContext.getProjectionMatrix() );
})
// update artoolkit on every frame
onRenderFcts.push(function(){
if( arToolkitSource.ready === false ) return
arToolkitContext.update( arToolkitSource.domElement )
})
////////////////////////////////////////////////////////////////////////////////
// Create a ArMarkerControls
////////////////////////////////////////////////////////////////////////////////
var markerRoot = new THREE.Group
scene.add(markerRoot)
var artoolkitMarker = new THREEx.ArMarkerControls(arToolkitContext, markerRoot, {
type : 'pattern',
patternUrl : THREEx.ArToolkitContext.baseURL + '../data/data/patt.hiro',
// patternUrl : THREEx.ArToolkitContext.baseURL + '../data/data/patt.kanji',
})
//////////////////////////////////////////////////////////////////////////////////
// build videoTexture
//////////////////////////////////////////////////////////////////////////////////
// get videoTexture
if( arToolkitSource.domElement.nodeName === 'VIDEO' ){
var videoTexture = new THREE.VideoTexture(arToolkitSource.domElement)
// arToolkitSource.domElement.pause()
}else if( arToolkitSource.domElement.nodeName === 'IMG' ){
var videoTexture = new THREE.Texture(arToolkitSource.domElement)
videoTexture.needsUpdate = true
}else console.assert(false)
// TODO to remove if webgl2 - better visual ?
videoTexture.minFilter = THREE.NearestFilter
//////////////////////////////////////////////////////////////////////////////
// add markerCloak
//////////////////////////////////////////////////////////////////////////////
var markerCloak = new THREEx.ArMarkerCloak(videoTexture);
markerRoot.add(markerCloak.object3d)
onRenderFcts.push(function(){
markerCloak.update(markerRoot.matrix, camera.projectionMatrix)
})
if( debugEnabled === true ){
orthoScene.add(markerCloak.orthoMesh)
onRenderFcts.push(function(){
markerCloak.orthoMesh.visible = markerRoot.visible
})
}
//////////////////////////////////////////////////////////////////////////////
// opacity animation
//////////////////////////////////////////////////////////////////////////////
// animation opacity
var targetOpacity = 1.0
onRenderFcts.push(function(delta){
var opacity = markerCloak.object3d.material.uniforms.opacity
var speed = delta * 3
if( opacity.value > targetOpacity ){
opacity.value -= speed
if( opacity.value < targetOpacity ){
opacity.value = targetOpacity
}
}
if( opacity.value < targetOpacity ){
opacity.value += speed
if( opacity.value > targetOpacity ){
opacity.value = targetOpacity
}
}
})
// toggleCloak on click/keypress
function toggleCloak(){
if( targetOpacity === 1.0 ){
targetOpacity = 0.0
}else{
targetOpacity = 1.0
}
}
document.body.addEventListener('click', toggleCloak)
document.body.addEventListener('keypress', toggleCloak)
//////////////////////////////////////////////////////////////////////////////////
// add an object in the scene
//////////////////////////////////////////////////////////////////////////////////
// add a torus knot
var geometry = new THREE.CubeGeometry(1,1,1);
var material = new THREE.MeshNormalMaterial({
transparent : true,
opacity: 0.5,
side: THREE.DoubleSide
});
var mesh = new THREE.Mesh( geometry, material );
mesh.position.y = geometry.parameters.height/2
markerRoot.add( mesh );
var geometry = new THREE.TorusKnotGeometry(0.3,0.1,64,16);
var material = new THREE.MeshNormalMaterial();
var mesh = new THREE.Mesh( geometry, material );
mesh.position.y = 0.5
markerRoot.add( mesh );
onRenderFcts.push(function(delta){
mesh.rotation.x += Math.PI*delta
})
//////////////////////////////////////////////////////////////////////////////////
// render the whole thing on the page
//////////////////////////////////////////////////////////////////////////////////
var stats = new Stats();
// document.body.appendChild( stats.dom );
// render the scene
onRenderFcts.push(function(){
renderer.clear();
renderer.render( scene, camera );
if( debugEnabled === true ){
renderer.render( orthoScene, orthoCamera );
}
// stats.update();
})
// run the rendering loop
var lastTimeMsec= null
requestAnimationFrame(function animate(nowMsec){
// keep looping
requestAnimationFrame( animate );
// measure time
lastTimeMsec = lastTimeMsec || nowMsec-1000/60
var deltaMsec = Math.min(200, nowMsec - lastTimeMsec)
lastTimeMsec = nowMsec
// call each update function
onRenderFcts.forEach(function(onRenderFct){
onRenderFct(deltaMsec/1000, nowMsec/1000)
})
})
</script></body>