一屏一屏的网站怎么做,哪个彩票网站做代理反水高,珠海 网站设计,做网站设计的公司有哪些SelectionBox API 案例使用
这个函数创建了一个 3D 场景#xff0c;包括一个相机、光源、多个立方体以及一个 WebGL 渲染器#xff0c;并在页面上渲染这个场景 function init() {// 创建一个容器 div 元素并将其添加到页面的 body 中container document.createElement(div)…SelectionBox API 案例使用
这个函数创建了一个 3D 场景包括一个相机、光源、多个立方体以及一个 WebGL 渲染器并在页面上渲染这个场景 function init() {// 创建一个容器 div 元素并将其添加到页面的 body 中container document.createElement(div);document.body.appendChild(container);// 创建透视相机并设置位置camera new THREE.PerspectiveCamera(70, window.innerWidth / window.innerHeight, 0.1, 500);camera.position.z 50;// 创建场景并设置背景颜色scene new THREE.Scene();scene.background new THREE.Color(0xf0f0f0);// 添加环境光scene.add(new THREE.AmbientLight(0xaaaaaa));// 创建聚光灯并设置位置、角度和阴影属性const light new THREE.SpotLight(0xffffff, 10000);light.position.set(0, 25, 50);light.angle Math.PI / 5;light.castShadow true;light.shadow.camera.near 10;light.shadow.camera.far 100;light.shadow.mapSize.width 1024;light.shadow.mapSize.height 1024;scene.add(light);// 创建立方体几何体const geometry new THREE.BoxGeometry();// 创建 200 个立方体对象并设置其位置、旋转、缩放以及阴影属性并将其添加到场景中for (let i 0; i 200; i) {const object new THREE.Mesh(geometry, new THREE.MeshLambertMaterial({ color: Math.random() * 0xffffff }));object.position.x Math.random() * 80 - 40;object.position.y Math.random() * 45 - 25;object.position.z Math.random() * 45 - 25;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() * 2 1;object.scale.y Math.random() * 2 1;object.scale.z Math.random() * 2 1;object.castShadow true;object.receiveShadow true;scene.add(object);}// 创建 WebGL 渲染器并设置像素比例、大小和阴影属性renderer new THREE.WebGLRenderer({ antialias: true });renderer.setPixelRatio(window.devicePixelRatio);renderer.setSize(window.innerWidth, window.innerHeight);renderer.shadowMap.enabled true;renderer.shadowMap.type THREE.PCFShadowMap;// 将渲染器的 DOM 元素添加到容器中container.appendChild(renderer.domElement);// 创建性能监视器并将其 DOM 元素添加到容器中stats new Stats();container.appendChild(stats.dom);// 监听窗口大小变化事件并调用 onWindowResize 函数window.addEventListener(resize, onWindowResize);
}
当窗口大小改变时调整相机的纵横比和渲染器的大小
// 当窗口大小改变时调整相机的纵横比和渲染器的大小
function onWindowResize() {camera.aspect window.innerWidth / window.innerHeight;camera.updateProjectionMatrix();renderer.setSize(window.innerWidth, window.innerHeight);
}
// 动画函数用于更新场景并渲染帧
function animate() {requestAnimationFrame(animate);render();stats.update(); // 更新性能监视器
}// 渲染函数用于渲染场景
function render() {renderer.render(scene, camera);
}// 创建一个选择框对象和一个选择辅助器对象
const selectionBox new SelectionBox(camera, scene);
const helper new SelectionHelper(renderer, selectBox);// 监听鼠标按下事件
document.addEventListener(pointerdown, function(event) {// 将所有被选择的物体的发光效果重置为黑色for (const item of selectionBox.collection) {item.material.emissive.set(0x000000);}// 设置选择框的起始点坐标selectionBox.startPoint.set((event.clientX / window.innerWidth) * 2 - 1,-(event.clientY / window.innerHeight) * 2 1,0.5);
});
// 监听鼠标移动事件
document.addEventListener(pointermove, function(event) {// 如果选择辅助器处于按下状态if (helper.isDown) {// 将所有被选择的物体的发光效果重置为黑色for (let i 0; i selectionBox.collection.length; i) {selectionBox.collection[i].material.emissive.set(0x000000);}// 设置选择框的结束点坐标selectionBox.endPoint.set((event.clientX / window.innerWidth) * 2 - 1,-(event.clientY / window.innerHeight) * 2 1,0.5);// 执行选择框的选择操作并获取所有被选择的物体const allSelected selectionBox.select();// 将所有被选择的物体的发光效果设置为白色for (let i 0; i allSelected.length; i) {allSelected[i].material.emissive.set(0xffffff);}}
});
// 监听鼠标松开事件
document.addEventListener(pointerup, function(event) {// 设置选择框的结束点坐标selectionBox.endPoint.set((event.clientX / window.innerWidth) * 2 - 1,-(event.clientY / window.innerHeight) * 2 1,0.5);// 执行选择框的选择操作并获取所有被选择的物体const allSelected selectionBox.select();// 将所有被选择的物体的发光效果设置为白色for (let i 0; i allSelected.length; i) {allSelected[i].material.emissive.set(0xffffff);}
}); 全部源码 !DOCTYPE html
html langenheadtitlethree.js webgl - box selection/titlemeta charsetutf-8meta nameviewport contentwidthdevice-width, user-scalableno, minimum-scale1.0, maximum-scale1.0link typetext/css relstylesheet hrefmain.cssstylebody {background-color: #f0f0f0;color: #000;touch-action: none;}a {color: #08e;}.selectBox {border: 1px solid #55aaff;background-color: rgba(75, 160, 255, 0.3);position: fixed;}/style/headbodydiv idinfoa hrefhttps://threejs.org target_blank relnoopenerthree.js/a webgl - box selection/divscript typeimportmap{imports: {three: ../build/three.module.js,three/addons/: ./jsm/}}/scriptscript typemoduleimport * as THREE from three;import Stats from three/addons/libs/stats.module.js;import { SelectionBox } from three/addons/interactive/SelectionBox.js;import { SelectionHelper } from three/addons/interactive/SelectionHelper.js;let container, stats;let camera, scene, renderer;init();animate();function init() {container document.createElement( div );document.body.appendChild( container );camera new THREE.PerspectiveCamera( 70, window.innerWidth / window.innerHeight, 0.1, 500 );camera.position.z 50;scene new THREE.Scene();scene.background new THREE.Color( 0xf0f0f0 );scene.add( new THREE.AmbientLight( 0xaaaaaa ) );const light new THREE.SpotLight( 0xffffff, 10000 );light.position.set( 0, 25, 50 );light.angle Math.PI / 5;light.castShadow true;light.shadow.camera.near 10;light.shadow.camera.far 100;light.shadow.mapSize.width 1024;light.shadow.mapSize.height 1024;scene.add( light );const geometry new THREE.BoxGeometry();for ( let i 0; i 200; i ) {const object new THREE.Mesh( geometry, new THREE.MeshLambertMaterial( { color: Math.random() * 0xffffff } ) );object.position.x Math.random() * 80 - 40;object.position.y Math.random() * 45 - 25;object.position.z Math.random() * 45 - 25;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() * 2 1;object.scale.y Math.random() * 2 1;object.scale.z Math.random() * 2 1;object.castShadow true;object.receiveShadow true;scene.add( object );}renderer new THREE.WebGLRenderer( { antialias: true } );renderer.setPixelRatio( window.devicePixelRatio );renderer.setSize( window.innerWidth, window.innerHeight );renderer.shadowMap.enabled true;renderer.shadowMap.type THREE.PCFShadowMap;container.appendChild( renderer.domElement );stats new Stats();container.appendChild( stats.dom );window.addEventListener( resize, onWindowResize );}function onWindowResize() {camera.aspect window.innerWidth / window.innerHeight;camera.updateProjectionMatrix();renderer.setSize( window.innerWidth, window.innerHeight );}//function animate() {requestAnimationFrame( animate );render();stats.update();}function render() {renderer.render( scene, camera );}const selectionBox new SelectionBox( camera, scene );const helper new SelectionHelper( renderer, selectBox );document.addEventListener( pointerdown, function ( event ) {for ( const item of selectionBox.collection ) {item.material.emissive.set( 0x000000 );}selectionBox.startPoint.set(( event.clientX / window.innerWidth ) * 2 - 1,- ( event.clientY / window.innerHeight ) * 2 1,0.5 );} );document.addEventListener( pointermove, function ( event ) {if ( helper.isDown ) {for ( let i 0; i selectionBox.collection.length; i ) {selectionBox.collection[ i ].material.emissive.set( 0x000000 );}selectionBox.endPoint.set(( event.clientX / window.innerWidth ) * 2 - 1,- ( event.clientY / window.innerHeight ) * 2 1,0.5 );const allSelected selectionBox.select();for ( let i 0; i allSelected.length; i ) {allSelected[ i ].material.emissive.set( 0xffffff );}}} );document.addEventListener( pointerup, function ( event ) {selectionBox.endPoint.set(( event.clientX / window.innerWidth ) * 2 - 1,- ( event.clientY / window.innerHeight ) * 2 1,0.5 );const allSelected selectionBox.select();for ( let i 0; i allSelected.length; i ) {allSelected[ i ].material.emissive.set( 0xffffff );}} );/script/body
/html
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