mirror of
https://github.com/wahyd4/three.js.git
synced 2026-08-09 04:56:01 +10:00
251 lines
5.5 KiB
HTML
251 lines
5.5 KiB
HTML
<!doctype html>
|
|
<html lang="en">
|
|
<head>
|
|
<title>three.js webgl - intersection: ray with sphere/AABB/plane</title>
|
|
<meta charset="utf-8">
|
|
<meta name="viewport" content="width=device-width, user-scalable=no, minimum-scale=1.0, maximum-scale=1.0">
|
|
<style>
|
|
body {
|
|
font-family: Monospace;
|
|
background-color: #f0f0f0;
|
|
margin: 0px;
|
|
overflow: hidden;
|
|
}
|
|
|
|
#oldie {
|
|
background-color: #ddd !important
|
|
}
|
|
|
|
#info {
|
|
position: absolute;
|
|
top: 30px;
|
|
left: 150px;
|
|
width: 800px;
|
|
color: #000000;
|
|
padding: 5px;
|
|
font-family: Monospace;
|
|
font-size: 13px;
|
|
text-align: left;
|
|
z-index: 100;
|
|
}
|
|
|
|
#options {
|
|
position: absolute;
|
|
top: 10px;
|
|
left: 150px;
|
|
width: 800px;
|
|
color: #000000;
|
|
padding: 5px;
|
|
font-family: Monospace;
|
|
font-size: 13px;
|
|
text-align: left;
|
|
z-index: 100;
|
|
}
|
|
</style>
|
|
<script src="../build/Three.js"></script>
|
|
<script src="js/RequestAnimationFrame.js"></script>
|
|
<script src="js/Stats.js"></script>
|
|
|
|
<script>
|
|
|
|
var camera, scene, projector, renderer,
|
|
info, mouse = { x: 0, y: 0 }, sun;
|
|
|
|
var theta = 0;
|
|
var camdist = 1500;
|
|
var geoms = [];
|
|
|
|
function init () {
|
|
|
|
container = document.createElement( 'div' );
|
|
document.body.appendChild( container );
|
|
|
|
info = document.getElementById( "info" );
|
|
|
|
camera = new THREE.PerspectiveCamera( 40, window.innerWidth / window.innerHeight, 1, 10000 );
|
|
|
|
scene = new THREE.Scene();
|
|
|
|
projector = new THREE.Projector();
|
|
|
|
renderer = new THREE.WebGLRenderer();
|
|
renderer.setSize( window.innerWidth, window.innerHeight );
|
|
container.appendChild( renderer.domElement );
|
|
|
|
var ambientLight = new THREE.AmbientLight( 0x606060 );
|
|
scene.add( ambientLight );
|
|
|
|
sun = new THREE.DirectionalLight( 0xffffff );
|
|
scene.add( sun );
|
|
|
|
makeWall(240);
|
|
makeWall(120);
|
|
makeWall(0);
|
|
makeWall(-120);
|
|
makeWall(-240);
|
|
|
|
plane = new THREE.Mesh( new THREE.PlaneGeometry( 30000, 30000, 10, 10 ), new THREE.MeshLambertMaterial( { color: 0x003300 } ) );
|
|
plane.position.y = - 480;
|
|
plane.rotation.x = Math.PI / - 2;
|
|
scene.add( plane );
|
|
geoms.push( plane );
|
|
|
|
var cplane = new THREE.PlaneCollider( plane.position, new THREE.Vector3( 0, 1, 0 ) );
|
|
cplane.mesh = plane;
|
|
THREE.Collisions.colliders.push( cplane );
|
|
|
|
stats = new Stats();
|
|
stats.domElement.style.position = 'absolute';
|
|
stats.domElement.style.top = '0px';
|
|
container.appendChild( stats.domElement );
|
|
|
|
container.onmousemove = onDocumentMouseMove;
|
|
animate();
|
|
|
|
}
|
|
|
|
function makeWall(z){
|
|
|
|
var mx = 120 * 2;
|
|
|
|
for ( var i = -mx; i <= mx; i += 120 ) {
|
|
|
|
for ( var j = -mx; j <= mx; j += 120 ) {
|
|
|
|
if ( Math.random() > 0.5 )
|
|
createCube( 100, new THREE.Vector3( j, i, z ) );
|
|
else
|
|
createSphere( 50, new THREE.Vector3( j, i, z ) );
|
|
|
|
}
|
|
|
|
}
|
|
|
|
}
|
|
|
|
function createCube( s, p ) {
|
|
|
|
var cube = new THREE.Mesh(new THREE.CubeGeometry( s, s, s ), new THREE.MeshLambertMaterial( { color: 0x003300 } ) );
|
|
cube.position = p;
|
|
scene.add(cube);
|
|
geoms.push(cube);
|
|
THREE.Collisions.colliders.push(THREE.CollisionUtils.MeshAABB(cube, p));
|
|
|
|
}
|
|
|
|
function createSphere( rad, p ) {
|
|
|
|
var sphere = new THREE.Mesh( new THREE.SphereGeometry( rad, 10, 10 ), new THREE.MeshLambertMaterial( { color: 0x003300 } ) );
|
|
sphere.position = p;
|
|
scene.add(sphere);
|
|
geoms.push(sphere);
|
|
|
|
var sc = new THREE.SphereCollider(p, rad);
|
|
sc.mesh = sphere;
|
|
THREE.Collisions.colliders.push(sc);
|
|
|
|
}
|
|
|
|
function onDocumentMouseMove(event){
|
|
|
|
event.preventDefault();
|
|
mouse.x = (event.clientX / window.innerWidth) * 2 - 1;
|
|
mouse.y = -(event.clientY / window.innerHeight) * 2 + 1;
|
|
|
|
}
|
|
|
|
function animate(){
|
|
|
|
requestAnimationFrame( animate );
|
|
|
|
var vector = new THREE.Vector3( mouse.x, mouse.y, 0.5 );
|
|
projector.unprojectVector( vector, camera );
|
|
|
|
var ray = new THREE.Ray( camera.position, vector.subSelf( camera.position ).normalize() );
|
|
|
|
for ( var i = 0; i < geoms.length; i ++ ) {
|
|
|
|
geoms[ i ].material.color.setHex( 0x007700 );
|
|
|
|
}
|
|
|
|
if ( !document.getElementById( "nearest" ).checked ) {
|
|
|
|
// Raycast all
|
|
|
|
ts = new Date().getTime();
|
|
var cs = THREE.Collisions.rayCastAll( ray );
|
|
tt = new Date().getTime() - ts;
|
|
|
|
if ( cs.length > 0 ) {
|
|
|
|
info.innerHTML = cs.length + " colliders found in " + tt;
|
|
|
|
for ( var i = 0; i < cs.length; i ++ ) {
|
|
|
|
cs[ i ].mesh.material.color.setHex( 0xaa0000 );
|
|
|
|
}
|
|
|
|
} else {
|
|
|
|
info.innerHTML = "No intersection";
|
|
|
|
}
|
|
|
|
} else {
|
|
|
|
// Raycast nearest
|
|
|
|
ts = new Date().getTime();
|
|
var c = THREE.Collisions.rayCastNearest( ray );
|
|
tt = new Date().getTime() - ts;
|
|
|
|
if ( c ) {
|
|
|
|
info.innerHTML = "Found in " + tt + " @ distance " + c.distance;
|
|
c.mesh.material.color.setHex( 0xaa0000 );
|
|
|
|
} else {
|
|
|
|
info.innerHTML = "No intersection";
|
|
|
|
}
|
|
|
|
}
|
|
|
|
camera.position.x = camdist * Math.cos(theta);
|
|
camera.position.z = camdist * Math.sin(theta);
|
|
camera.position.y = camdist / 2 * Math.sin(theta * 2);
|
|
|
|
camera.lookAt( scene.position );
|
|
|
|
sun.position.copy( camera.position );
|
|
sun.position.normalize();
|
|
theta += 0.005;
|
|
|
|
renderer.render( scene, camera );
|
|
|
|
stats.update();
|
|
|
|
}
|
|
|
|
function vts(v){
|
|
if (!v)
|
|
return "undefined<br>";
|
|
else
|
|
return v.x + " , " + v.y + " , " + v.z + "<br>";
|
|
}
|
|
|
|
</script>
|
|
</head>
|
|
<body onload="init();">
|
|
<div id="info">
|
|
</div>
|
|
<div id="options">
|
|
<input type="checkbox" id="nearest" checked/> Nearest collider only
|
|
<br/>
|
|
</div>
|
|
</body>
|
|
</html>
|