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refraction.html
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refraction.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, world!</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>
</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/
-->
<!-- ---------------- Custom Shader Code ------------------------ -->
<script id="vertexShader" type="x-shader/x-vertex">
uniform float refractionRatio;
varying vec3 vRefract;
void main()
{
vec4 mPosition = modelMatrix * vec4( position, 1.0 );
vec3 nWorld = normalize( mat3( modelMatrix[0].xyz, modelMatrix[1].xyz, modelMatrix[2].xyz ) * normal );
vRefract = normalize( refract( normalize( mPosition.xyz - cameraPosition ), nWorld, refractionRatio ) );
gl_Position = projectionMatrix * modelViewMatrix * vec4( position, 1.0 );
}
</script>
<script id="fragmentShader" type="x-shader/x-vertex">
uniform sampler2D texture;
varying vec3 vRefract;
uniform float distance;
uniform float opacity;
uniform vec3 tint;
void main()
{
vec2 p = vec2( vRefract.x * distance + 0.5, vRefract.y * distance + 0.5 );
p = vec2(1.0, 1.0) - p;
vec3 color = texture2D( texture, p ).rgb;
gl_FragColor = vec4( color, opacity ) * vec4( tint, 1.0 );
}
</script>
<!-- ----------------------------------------------------------- -->
<script>
var scene, camera, renderer, clock, deltaTime, totalTime;
var arToolkitSource, arToolkitContext;
var markerRoot1;
var material1, mesh1;
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
markerRoot1 = new THREE.Group();
scene.add(markerRoot1);
let markerControls1 = new THREEx.ArMarkerControls(arToolkitContext, markerRoot1, {
type: 'pattern', patternUrl: "data/kanji.patt",
})
////////////////////////////////////////////////////////////
// setup scene
////////////////////////////////////////////////////////////
let loader = new THREE.TextureLoader();
let videoTexture = new THREE.VideoTexture( arToolkitSource.domElement );
videoTexture.minFilter = THREE.LinearFilter;
let refractMaterial = new THREE.ShaderMaterial({
uniforms: {
texture: { value: videoTexture },
refractionRatio: { value: 0.75 },
distance: { value: 1.0 },
opacity: { value: 0.8 },
tint: { value: new THREE.Vector3(0.8, 0.8, 1.0) }
},
vertexShader: document.getElementById( 'vertexShader' ).textContent,
fragmentShader: document.getElementById( 'fragmentShader' ).textContent,
transparent: true
});
reflectMesh = new THREE.Mesh(
new THREE.TorusKnotGeometry(1, 0.4, 128, 16), // new THREE.SphereBufferGeometry(1, 32, 32),
refractMaterial
);
reflectMesh.position.y = 1;
markerRoot1.add( reflectMesh );
}
function update()
{
// update artoolkit on every frame
if ( arToolkitSource.ready !== false )
arToolkitContext.update( arToolkitSource.domElement );
reflectMesh.rotation.y -= 0.01;
}
function render()
{
renderer.render( scene, camera );
}
function animate()
{
requestAnimationFrame(animate);
deltaTime = clock.getDelta();
totalTime += deltaTime;
update();
render();
}
</script>
</body>
</html>