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171 lines
3.9 KiB
171 lines
3.9 KiB
2 years ago
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<!DOCTYPE html>
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<html lang="en">
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<head>
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<title>three.js webgl - simple text from json</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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<link type="text/css" rel="stylesheet" href="main.css">
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<style>
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body {
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background-color: #f0f0f0;
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color: #444;
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}
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a {
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color: #08f;
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}
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</style>
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</head>
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<body>
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<div id="info">
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<a href="https://threejs.org" target="_blank" rel="noopener">three.js</a> webgl - simple text from json fonts
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</div>
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<!-- Import maps polyfill -->
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<!-- Remove this when import maps will be widely supported -->
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<script async src="https://unpkg.com/es-module-shims@1.3.6/dist/es-module-shims.js"></script>
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<script type="importmap">
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{
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"imports": {
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"three": "../build/three.module.js",
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"three/addons/": "./jsm/"
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}
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}
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</script>
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<script type="module">
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import * as THREE from 'three';
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import { OrbitControls } from 'three/addons/controls/OrbitControls.js';
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import { FontLoader } from 'three/addons/loaders/FontLoader.js';
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let camera, scene, renderer;
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init();
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function init( ) {
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camera = new THREE.PerspectiveCamera( 45, window.innerWidth / window.innerHeight, 1, 10000 );
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camera.position.set( 0, - 400, 600 );
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scene = new THREE.Scene();
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scene.background = new THREE.Color( 0xf0f0f0 );
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const loader = new FontLoader();
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loader.load( 'fonts/helvetiker_regular.typeface.json', function ( font ) {
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const color = 0x006699;
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const matDark = new THREE.LineBasicMaterial( {
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color: color,
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side: THREE.DoubleSide
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} );
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const matLite = new THREE.MeshBasicMaterial( {
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color: color,
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transparent: true,
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opacity: 0.4,
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side: THREE.DoubleSide
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} );
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const message = ' Three.js\nSimple text.';
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const shapes = font.generateShapes( message, 100 );
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const geometry = new THREE.ShapeGeometry( shapes );
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geometry.computeBoundingBox();
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const xMid = - 0.5 * ( geometry.boundingBox.max.x - geometry.boundingBox.min.x );
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geometry.translate( xMid, 0, 0 );
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// make shape ( N.B. edge view not visible )
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const text = new THREE.Mesh( geometry, matLite );
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text.position.z = - 150;
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scene.add( text );
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// make line shape ( N.B. edge view remains visible )
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const holeShapes = [];
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for ( let i = 0; i < shapes.length; i ++ ) {
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const shape = shapes[ i ];
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if ( shape.holes && shape.holes.length > 0 ) {
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for ( let j = 0; j < shape.holes.length; j ++ ) {
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const hole = shape.holes[ j ];
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holeShapes.push( hole );
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}
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}
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}
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shapes.push.apply( shapes, holeShapes );
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const lineText = new THREE.Object3D();
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for ( let i = 0; i < shapes.length; i ++ ) {
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const shape = shapes[ i ];
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const points = shape.getPoints();
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const geometry = new THREE.BufferGeometry().setFromPoints( points );
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geometry.translate( xMid, 0, 0 );
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const lineMesh = new THREE.Line( geometry, matDark );
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lineText.add( lineMesh );
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}
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scene.add( lineText );
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render();
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} ); //end load function
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renderer = new THREE.WebGLRenderer( { antialias: true } );
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renderer.setPixelRatio( window.devicePixelRatio );
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renderer.setSize( window.innerWidth, window.innerHeight );
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document.body.appendChild( renderer.domElement );
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const controls = new OrbitControls( camera, renderer.domElement );
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controls.target.set( 0, 0, 0 );
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controls.update();
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controls.addEventListener( 'change', render );
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window.addEventListener( 'resize', onWindowResize );
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} // end init
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function onWindowResize() {
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camera.aspect = window.innerWidth / window.innerHeight;
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camera.updateProjectionMatrix();
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renderer.setSize( window.innerWidth, window.innerHeight );
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render();
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}
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function render() {
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renderer.render( scene, camera );
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}
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</script>
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</body>
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</html>
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