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portal-view-AR.html
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portal-view-AR.html
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<!DOCTYPE html>
<head>
<meta name="viewport" content="width=device-width, user-scalable=no, minimum-scale=1.0, maximum-scale=1.0">
<title>Hello, AR Cube!</title>
<!-- include three.js library -->
<script src='js/three.js'></script>
<!-- include jsartookit -->
<script src="jsartoolkit5/artoolkit.min.js"></script>
<script src="jsartoolkit5/artoolkit.api.js"></script>
<!-- include threex.artoolkit -->
<script src="threex/threex-artoolkitsource.js"></script>
<script src="threex/threex-artoolkitcontext.js"></script>
<script src="threex/threex-arbasecontrols.js"></script>
<script src="threex/threex-armarkercontrols.js"></script>
<script src="threex/threex-arsmoothedcontrols.js"></script>
</head>
<body style='margin : 0px; overflow: hidden; font-family: Monospace;'>
<!--
Example created by Lee Stemkoski: https://github.com/stemkoski
Based on the AR.js library and examples created by Jerome Etienne: https://github.com/jeromeetienne/AR.js/
-->
<script>
var scene, camera, renderer, clock, deltaTime, totalTime;
var arToolkitSource, arToolkitContext, smoothedControls;
var markerRoot1, markerRoot2;
var portal, portalMaterial;
initialize();
animate();
function initialize()
{
scene = new THREE.Scene();
let ambientLight = new THREE.AmbientLight( 0xcccccc, 0.5 );
scene.add( ambientLight );
camera = new THREE.Camera();
scene.add(camera);
renderer = new THREE.WebGLRenderer({
antialias : true,
alpha: true
});
renderer.setClearColor(new THREE.Color('lightgrey'), 0)
renderer.setSize( 640, 480 );
renderer.domElement.style.position = 'absolute'
renderer.domElement.style.top = '0px'
renderer.domElement.style.left = '0px'
document.body.appendChild( renderer.domElement );
clock = new THREE.Clock();
deltaTime = 0;
totalTime = 0;
////////////////////////////////////////////////////////////
// setup arToolkitSource
////////////////////////////////////////////////////////////
arToolkitSource = new THREEx.ArToolkitSource({
sourceType : 'webcam',
});
function onResize()
{
arToolkitSource.onResize()
arToolkitSource.copySizeTo(renderer.domElement)
if ( arToolkitContext.arController !== null )
{
arToolkitSource.copySizeTo(arToolkitContext.arController.canvas)
}
}
arToolkitSource.init(function onReady(){
onResize()
});
// handle resize event
window.addEventListener('resize', function(){
onResize()
});
////////////////////////////////////////////////////////////
// setup arToolkitContext
////////////////////////////////////////////////////////////
// create atToolkitContext
arToolkitContext = new THREEx.ArToolkitContext({
cameraParametersUrl: 'data/camera_para.dat',
detectionMode: 'mono'
});
// copy projection matrix to camera when initialization complete
arToolkitContext.init( function onCompleted(){
camera.projectionMatrix.copy( arToolkitContext.getProjectionMatrix() );
});
////////////////////////////////////////////////////////////
// setup markerRoots
////////////////////////////////////////////////////////////
// build markerControls
kanjiMarker = new THREE.Group();
scene.add(kanjiMarker);
let markerControls1 = new THREEx.ArMarkerControls(arToolkitContext, kanjiMarker, {
type : 'pattern',
patternUrl : "data/kanji.patt",
})
// interpolates from last position to create smoother transitions when moving.
// parameter lerp values near 0 are slow, near 1 are fast (instantaneous).
let smoothedRoot = new THREE.Group();
scene.add(smoothedRoot);
smoothedControls = new THREEx.ArSmoothedControls(smoothedRoot, {
lerpPosition: 0.5,
lerpQuaternion: 0.5,
lerpScale: 1,
// minVisibleDelay: 1,
// minUnvisibleDelay: 1,
});
////////////////////////////////////////////////////////////
// setup scene
////////////////////////////////////////////////////////////
let loader = new THREE.TextureLoader();
// material for portal (for debugging)
let defaultMaterial = new THREE.MeshBasicMaterial({
map: loader.load("images/sphere-colored.png"),
color: 0x444444,
side: THREE.DoubleSide,
transparent: true,
opacity: 0.6
});
let portalWidth = 2;
let portalHeight = 4;
let portalBorder = 0.1;
portal = new THREE.Mesh(
new THREE.PlaneGeometry(portalWidth, portalHeight),
defaultMaterial
);
portal.position.y = portalHeight/2 + portalBorder;
portal.layers.set(1);
smoothedRoot.add(portal);
camera.layers.enable(1);
portalMaterial = new THREE.MeshBasicMaterial({ color: 0xffff00, side: THREE.DoubleSide, transparent:true, opacity: 0.75 });
let portalBorderMesh = new THREE.Mesh(
new THREE.PlaneGeometry(portalWidth + 2*portalBorder, portalHeight + 2*portalBorder),
portalMaterial
);
portalBorderMesh.position.y = portal.position.y;
portalBorderMesh.layers.set(0);
smoothedRoot.add(portalBorderMesh);
// the world beyond the portal
// textures from http://www.humus.name/
let skyMaterialArray = [
new THREE.MeshBasicMaterial( { map: loader.load("images/mountain/posx.jpg"), side: THREE.BackSide } ),
new THREE.MeshBasicMaterial( { map: loader.load("images/mountain/negx.jpg"), side: THREE.BackSide } ),
new THREE.MeshBasicMaterial( { map: loader.load("images/mountain/posy.jpg"), side: THREE.BackSide } ),
new THREE.MeshBasicMaterial( { map: loader.load("images/mountain/negy.jpg"), side: THREE.BackSide } ),
new THREE.MeshBasicMaterial( { map: loader.load("images/mountain/posz.jpg"), side: THREE.BackSide } ),
new THREE.MeshBasicMaterial( { map: loader.load("images/mountain/negz.jpg"), side: THREE.BackSide } ),
];
let skyMesh = new THREE.Mesh(
new THREE.CubeGeometry(30,30,30),
skyMaterialArray );
skyMesh.layers.set(2);
smoothedRoot.add(skyMesh);
}
function update()
{
// portal ring color cycle
portalMaterial.color.setHSL( totalTime/10 % 1, 1, 0.75 );
// update artoolkit on every frame
if ( arToolkitSource.ready !== false )
arToolkitContext.update( arToolkitSource.domElement );
// additional code for smoothed controls
smoothedControls.update(kanjiMarker);
}
function render()
{
//renderer.render( scene, camera );
let gl = renderer.context;
// clear buffers now: color, depth, stencil
renderer.clear(true,true,true);
// do not clear buffers before each render pass
renderer.autoClear = false;
// FIRST PASS
// goal: using the stencil buffer, place 1's in position of first portal (layer 1)
// enable the stencil buffer
gl.enable(gl.STENCIL_TEST);
// layer 1 contains only the first portal
camera.layers.set(1);
gl.stencilFunc(gl.ALWAYS, 1, 0xff);
gl.stencilOp(gl.KEEP, gl.KEEP, gl.REPLACE);
gl.stencilMask(0xff);
// only write to stencil buffer (not color or depth)
gl.colorMask(false,false,false,false);
gl.depthMask(false);
renderer.render( scene, camera );
// SECOND PASS
// goal: render skybox (layer 2) but only through portal
gl.colorMask(true,true,true,true);
gl.depthMask(true);
gl.stencilFunc(gl.EQUAL, 1, 0xff);
gl.stencilOp(gl.KEEP, gl.KEEP, gl.KEEP);
camera.layers.set(2);
renderer.render( scene, camera );
// FINAL PASS
// goal: render the rest of the scene (layer 0)
// using stencil buffer simplifies drawing border around portal
gl.stencilFunc(gl.NOTEQUAL, 1, 0xff);
gl.colorMask(true,true,true,true);
gl.depthMask(true);
camera.layers.set(0); // layer 0 contains portal border mesh
renderer.render( scene, camera );
// set things back to normal
renderer.autoClear = true;
}
function animate()
{
requestAnimationFrame(animate);
deltaTime = clock.getDelta();
totalTime += deltaTime;
update();
render();
}
</script>
</body>
</html>