mirror of
https://github.com/wahyd4/three.js.git
synced 2026-08-09 04:56:01 +10:00
218 lines
5.0 KiB
HTML
218 lines
5.0 KiB
HTML
<!doctype html>
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<html lang="en">
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<head>
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<title>three.js webgl - intersection: ray/mesh readinf normal</title>
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<meta charset="utf-8">
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<meta name="viewport" content="width=device-width, user-scalable=no, minimum-scale=1.0, maximum-scale=1.0">
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<style>
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body {
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font-family: Monospace;
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background-color: #f0f0f0;
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margin: 0px;
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overflow: hidden;
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}
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#oldie { background-color: #ddd !important }
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#info {
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position: absolute;
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top: 30px; left: 10px; width: 800px;
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color: #000000;
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padding: 5px;
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font-family: Monospace;
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font-size: 13px;
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text-align: left;
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z-index:100;
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}
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#options {
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position: absolute;
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top: 10px; left: 10px; width: 800px;
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color: #000000;
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padding: 5px;
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font-family: Monospace;
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font-size: 13px;
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text-align: left;
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z-index:100;
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}
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</style>
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<script src="../build/Three.js"></script>
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<script src="js/RequestAnimationFrame.js"></script>
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<script src="js/Stats.js"></script>
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<script>
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var camera, scene, projector, renderer,
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info, mouse = { x: 0, y: 0 }, sun, loader, stats, line;
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var meshes = [];
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var theta = 0;
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var camdist = 500;
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var totalFaces = 0, totalColliders = 0;
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function init() {
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container = document.createElement( 'div' );
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document.body.appendChild( container );
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info = document.getElementById("info");
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camera = new THREE.PerspectiveCamera( 40, window.innerWidth / window.innerHeight, 1, 10000 );
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camera.position.z = camdist;
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loader = new THREE.JSONLoader( );
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scene = new THREE.Scene();
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projector = new THREE.Projector();
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renderer = new THREE.WebGLRenderer();
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renderer.setSize( window.innerWidth, window.innerHeight );
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container.appendChild( renderer.domElement );
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var ambientLight = new THREE.AmbientLight( 0x606060 );
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scene.add( ambientLight );
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sun = new THREE.DirectionalLight( 0xffffff );
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sun.position = camera.position.clone();
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scene.add( sun );
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loadCube();
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var lineMat = new THREE.LineBasicMaterial( { color: 0xff0000, opacity: 1, linewidth: 3 } );
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var geom = new THREE.Geometry();
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geom.vertices.push( new THREE.Vertex( new THREE.Vector3(-100, 0, 0) ) );
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geom.vertices.push( new THREE.Vertex( new THREE.Vector3( 100, 0, 0) ) );
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line = new THREE.Line(geom, lineMat);
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scene.add( line );
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stats = new Stats();
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stats.domElement.style.position = 'absolute';
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stats.domElement.style.top = '0px';
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container.appendChild( stats.domElement );
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container.onmousemove = onDocumentMouseMove;
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animate();
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}
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function loadCube( p ) {
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var onGeometry = function( geometry ) {
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var sx = 300;
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var sy = 240;
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var sz = 300;
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addCube( new THREE.Vector3( 0, 0, 0 ), geometry );
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};
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loader.load( { model: "obj/suzanne/suzanneHi.js", callback: onGeometry } );
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}
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function addCube( p, g) {
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totalFaces += g.faces.length;
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totalColliders++;
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var mesh = new THREE.Mesh( g, new THREE.MeshLambertMaterial( { color: 0x003300 } ) );
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mesh.position = p;
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scene.add( mesh );
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var mc = THREE.CollisionUtils.MeshColliderWBox(mesh);
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THREE.Collisions.colliders.push( mc );
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meshes.push( mesh );
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};
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function onDocumentMouseMove( event ) {
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event.preventDefault();
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mouse.x = ( event.clientX / window.innerWidth ) * 2 - 1;
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mouse.y = - ( event.clientY / window.innerHeight ) * 2 + 1;
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};
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function animate() {
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requestAnimationFrame( animate );
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var vector = new THREE.Vector3( mouse.x, mouse.y, 0.5 );
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projector.unprojectVector( vector, camera );
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var ray = new THREE.Ray( camera.position, vector.subSelf( camera.position ).normalize() );
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if ( meshes.length == 0 ) return;
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var i, l = meshes.length;
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for ( i = 0; i < l; i++ ) {
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meshes[ i ].materials[ 0 ].color.setHex( 0x003300 );
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}
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info.innerHTML = "";
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var c = THREE.Collisions.rayCastNearest( ray );
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if( c ) {
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info.innerHTML += "Found @ normal " + vts(c.normal);
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var poi = ray.origin.clone().addSelf( ray.direction.clone().multiplyScalar(c.distance) );
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line.geometry.vertices[0].position = poi;
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line.geometry.vertices[1].position = poi.clone().addSelf(c.normal.multiplyScalar(100));
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line.geometry.__dirtyVertices = true;
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line.geometry.__dirtyElements = true;
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c.mesh.materials[ 0 ].color.setHex( 0xbb0000 );
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} else {
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info.innerHTML += "No intersection";
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}
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camera.position.x = camdist * Math.cos( theta );
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camera.position.z = camdist * Math.sin( theta );
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camera.position.y = camdist/2 * Math.sin( theta * 2 );
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camera.lookAt( scene.position );
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sun.position.copy( camera.position );
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sun.position.normalize();
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theta += 0.005;
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renderer.render( scene, camera );
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stats.update();
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};
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function vts(v) {
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if(!v) return "undefined<br>";
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else return v.x.toFixed(2) + " , " + v.y.toFixed(2) + " , " + v.z.toFixed(2) + "<br>";
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};
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</script>
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</head>
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<body onload="init();">
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<div id="info"></div>
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<div id="options"></div>
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</body>
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</html>
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