我克隆https://github.com/mrdoob/three.js.git，并对示例 webgl_loader_utf8.html 进行了 2 处更改
- 添加 CubeGeometry
- 支持查找交叉点
当我点击 Cubes 可以找到交叉点，但点击 utf8 模型（例如，本或手模型）找不到交叉点。有什么想法吗？非常感谢！
<!DOCTYPE html>
<html lang="en">
<head>
<title>three.js webgl - io - UTF8 loader</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: #000;
color: #fff;
margin: 0px;
overflow: hidden;
}
#info {
color: #fff;
position: absolute;
top: 10px;
width: 100%;
text-align: center;
z-index: 100;
display:block;
}
#info a, .button { color: #f00; font-weight: bold; text-decoration: underline; cursor: pointer }
</style>
</head>
<body>
<div id="info">
<a href="http://threejs.org" target="_blank">three.js</a> -
<a href="http://code.google.com/p/webgl-loader/" target="_blank">UTF8 format</a> loader test -
models from <a href="http://www.sci.utah.edu/~wald/animrep/" target="_blank">The Utah 3D Animation Repository</a>
<div id="show"></div>
</div>
<script src="../build/three.min.js"></script>
<script src="js/loaders/UTF8Loader.js"></script>
<script src="js/loaders/MTLLoader.js"></script>
<script src="js/Detector.js"></script>
<script src="js/libs/stats.min.js"></script>
<script src="js/libs/tween.min.js"></script>
<script>
var SCREEN_WIDTH = window.innerWidth;
var SCREEN_HEIGHT = window.innerHeight;
var FLOOR = -150;
var container, stats;
var camera, scene, renderer;
var projector, raycaster;
var mouse = new THREE.Vector2();
var mesh, zmesh, geometry;
var mouseX = 0, mouseY = 0;
var windowHalfX = window.innerWidth / 2;
var windowHalfY = window.innerHeight / 2;
document.addEventListener('mousemove', onDocumentMouseMove, false);
document.addEventListener( 'mousedown', onDocumentMouseDown, false );
var show = document.getElementById("show");
init();
animate();
function init() {
container = document.createElement( 'div' );
document.body.appendChild( container );
camera = new THREE.PerspectiveCamera( 20, SCREEN_WIDTH / SCREEN_HEIGHT, 1, 2000 );
camera.position.z = 800;
scene = new THREE.Scene();
scene.fog = new THREE.Fog( 0x000000, 800, 2000 );
var path = "textures/cube/SwedishRoyalCastle/";
var format = '.jpg';
var urls = [
path + 'px' + format, path + 'nx' + format,
path + 'py' + format, path + 'ny' + format,
path + 'pz' + format, path + 'nz' + format
];
reflectionCube = THREE.ImageUtils.loadTextureCube( urls );
// LIGHTS
var ambient = new THREE.AmbientLight( 0x222222 );
scene.add( ambient );
var directionalLight = new THREE.DirectionalLight( 0xffffff, 1.1 );
directionalLight.position.set( 0, 20, 300 );
scene.add( directionalLight );
directionalLight.castShadow = true;
//directionalLight.shadowCameraVisible = true;
directionalLight.shadowMapWidth = 2048;
directionalLight.shadowMaHeight = 2048;
var d = 150;
directionalLight.shadowCameraLeft = -d * 1.2;
directionalLight.shadowCameraRight = d * 1.2;
directionalLight.shadowCameraTop = d;
directionalLight.shadowCameraBottom = -d;
directionalLight.shadowCameraNear = 200;
directionalLight.shadowCameraFar = 500;
// RENDERER
renderer = new THREE.WebGLRenderer( { antialias: true } );
renderer.setSize( SCREEN_WIDTH, SCREEN_HEIGHT );
renderer.setClearColor( scene.fog.color, 1 );
renderer.domElement.style.position = "relative";
container.appendChild( renderer.domElement );
//
/**
renderer.gammaInput = true;
renderer.gammaOutput = true;
renderer.physicallyBasedShading = true;
renderer.shadowMapEnabled = true;
renderer.shadowMapType = THREE.PCFShadowMap;
**/
// STATS
stats = new Stats();
stats.domElement.style.position = 'absolute';
stats.domElement.style.top = '0px';
stats.domElement.style.zIndex = 100;
container.appendChild( stats.domElement );
var start = Date.now();
var loader = new THREE.UTF8Loader();
loader.load( "models/utf8/hand.js", function ( object ) {
var end = Date.now();
console.log( "hand", end - start, "ms" );
var s = 350;
object.scale.set( s, s, s );
object.position.x = 125;
object.position.y = -125;
//scene.add( object );
object.traverse( function( node ) {
node.castShadow = true;
node.receiveShadow = true;
if ( node.material && node.material.name === "skin" ) {
node.material.wrapAround = true;
node.material.wrapRGB.set( 0.6, 0.2, 0.1 );
}
} );
}, { normalizeRGB: true } );
loader.load( "models/utf8/ben_dds.js", function ( object ) {
var end = Date.now();
console.log( "ben", end - start, "ms" );
var s = 350;
object.scale.set( s, s, s );
object.position.x = -125;
object.position.y = -125;
scene.add( object );
object.traverse( function( node ) {
node.castShadow = true;
node.receiveShadow = true;
if ( node.material && ( node.material.name === "head" || node.material.name === "skinbody" ) ) {
node.material.wrapAround = true;
node.material.wrapRGB.set( 0.6, 0.2, 0.1 );
}
} );
}, { normalizeRGB: true } );
var geometry = new THREE.CubeGeometry( 20, 20, 20 );
for ( var i = 0; i < 20; i ++ ) {
var object = new THREE.Mesh( geometry, new THREE.MeshLambertMaterial( { color: Math.random() * 0xffffff } ) );
object.position.x = Math.random() * 800 - 400;
object.position.y = Math.random() * 800 - 400;
object.position.z = Math.random() * 800 - 400;
object.rotation.x = Math.random() * 2 * Math.PI;
object.rotation.y = Math.random() * 2 * Math.PI;
object.rotation.z = Math.random() * 2 * Math.PI;
object.scale.x = Math.random() + 0.5;
object.scale.y = Math.random() + 0.5;
object.scale.z = Math.random() + 0.5;
scene.add( object );
}
projector = new THREE.Projector();
raycaster = new THREE.Raycaster();
//
window.addEventListener( 'resize', onWindowResize, false );
}
function onWindowResize() {
windowHalfX = window.innerWidth / 2;
windowHalfY = window.innerHeight / 2;
camera.aspect = window.innerWidth / window.innerHeight;
camera.updateProjectionMatrix();
renderer.setSize( window.innerWidth, window.innerHeight );
}
function onDocumentMouseMove( event ) {
mouseX = ( event.clientX - windowHalfX );
mouseY = ( event.clientY - windowHalfY );
mouse.x = ( event.clientX / window.innerWidth ) * 2 - 1;
mouse.y = - ( event.clientY / window.innerHeight ) * 2 + 1;
}
//
function animate() {
requestAnimationFrame( animate );
render();
stats.update();
}
function render() {
camera.position.x += ( mouseX - camera.position.x ) * .05;
camera.position.y += ( - mouseY - camera.position.y ) * .05;
camera.lookAt( scene.position );
renderer.render( scene, camera );
}
function onDocumentMouseDown( event ) {
event.preventDefault();
show.innerText = "";
var vector = new THREE.Vector3( ( event.clientX / window.innerWidth ) * 2 - 1, - ( event.clientY / window.innerHeight ) * 2 + 1, 0.5 );
projector.unprojectVector( vector, camera );
var raycaster = new THREE.Raycaster( camera.position, vector.sub( camera.position ).normalize() );
var intersects = raycaster.intersectObjects( scene.children );
if ( intersects.length > 0 ) {
show.innerText = "intersects=" + intersects.length + " at " + Date.now();
console.log(intersects.length);
}
}
</script>
</body>
</html>