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- <!DOCTYPE html>
- <html lang="en">
- <head>
- <title>three.js webgl - geometry - text</title>
- <meta charset="utf-8">
- <meta name="viewport" content="width=device-width, user-scalable=no, minimum-scale=1.0, maximum-scale=1.0">
- <link type="text/css" rel="stylesheet" href="main.css">
- </head>
- <body>
- <div id="info">
- <a href="https://threejs.org" target="_blank" rel="noopener">three.js</a> - procedural 3D text<br/>
- type to enter new text, drag to spin the text
- </div>
- <script type="importmap">
- {
- "imports": {
- "three": "../build/three.module.js",
- "three/addons/": "./jsm/"
- }
- }
- </script>
- <script type="module">
- import * as THREE from 'three';
- import { FontLoader } from 'three/addons/loaders/FontLoader.js';
- import { TextGeometry } from 'three/addons/geometries/TextGeometry.js';
- import { GUI } from 'three/addons/libs/lil-gui.module.min.js';
- THREE.Cache.enabled = true;
- let container;
- let camera, cameraTarget, scene, renderer;
- let group, textMesh1, textMesh2, textGeo, materials;
- let firstLetter = true;
- let text = 'three.js',
- bevelEnabled = true,
- font = undefined,
- fontName = 'optimer', // helvetiker, optimer, gentilis, droid sans, droid serif
- fontWeight = 'bold'; // normal bold
- const depth = 20,
- size = 70,
- hover = 30,
- curveSegments = 4,
- bevelThickness = 2,
- bevelSize = 1.5;
- const mirror = true;
- const fontMap = {
- 'helvetiker': 0,
- 'optimer': 1,
- 'gentilis': 2,
- 'droid/droid_sans': 3,
- 'droid/droid_serif': 4
- };
- const weightMap = {
- 'regular': 0,
- 'bold': 1
- };
- const reverseFontMap = [];
- const reverseWeightMap = [];
- for ( const i in fontMap ) reverseFontMap[ fontMap[ i ] ] = i;
- for ( const i in weightMap ) reverseWeightMap[ weightMap[ i ] ] = i;
- let targetRotation = 0;
- let targetRotationOnPointerDown = 0;
- let pointerX = 0;
- let pointerXOnPointerDown = 0;
- let windowHalfX = window.innerWidth / 2;
- let fontIndex = 1;
- init();
- function init() {
- container = document.createElement( 'div' );
- document.body.appendChild( container );
- // CAMERA
- camera = new THREE.PerspectiveCamera( 30, window.innerWidth / window.innerHeight, 1, 1500 );
- camera.position.set( 0, 400, 700 );
- cameraTarget = new THREE.Vector3( 0, 150, 0 );
- // SCENE
- scene = new THREE.Scene();
- scene.background = new THREE.Color( 0x000000 );
- scene.fog = new THREE.Fog( 0x000000, 250, 1400 );
- // LIGHTS
- const dirLight = new THREE.DirectionalLight( 0xffffff, 0.4 );
- dirLight.position.set( 0, 0, 1 ).normalize();
- scene.add( dirLight );
- const pointLight = new THREE.PointLight( 0xffffff, 4.5, 0, 0 );
- pointLight.color.setHSL( Math.random(), 1, 0.5 );
- pointLight.position.set( 0, 100, 90 );
- scene.add( pointLight );
- materials = [
- new THREE.MeshPhongMaterial( { color: 0xffffff, flatShading: true } ), // front
- new THREE.MeshPhongMaterial( { color: 0xffffff } ) // side
- ];
- group = new THREE.Group();
- group.position.y = 100;
- scene.add( group );
- loadFont();
- const plane = new THREE.Mesh(
- new THREE.PlaneGeometry( 10000, 10000 ),
- new THREE.MeshBasicMaterial( { color: 0xffffff, opacity: 0.5, transparent: true } )
- );
- plane.position.y = 100;
- plane.rotation.x = - Math.PI / 2;
- scene.add( plane );
- // RENDERER
- renderer = new THREE.WebGLRenderer( { antialias: true } );
- renderer.setPixelRatio( window.devicePixelRatio );
- renderer.setSize( window.innerWidth, window.innerHeight );
- renderer.setAnimationLoop( animate );
- container.appendChild( renderer.domElement );
- // EVENTS
- container.style.touchAction = 'none';
- container.addEventListener( 'pointerdown', onPointerDown );
- document.addEventListener( 'keypress', onDocumentKeyPress );
- document.addEventListener( 'keydown', onDocumentKeyDown );
- //
- const params = {
- changeColor: function () {
- pointLight.color.setHSL( Math.random(), 1, 0.5 );
- },
- changeFont: function () {
- fontIndex ++;
- fontName = reverseFontMap[ fontIndex % reverseFontMap.length ];
- loadFont();
- },
- changeWeight: function () {
- if ( fontWeight === 'bold' ) {
- fontWeight = 'regular';
- } else {
- fontWeight = 'bold';
- }
- loadFont();
- },
- changeBevel: function () {
- bevelEnabled = ! bevelEnabled;
- refreshText();
- }
- };
- //
- const gui = new GUI();
- gui.add( params, 'changeColor' ).name( 'change color' );
- gui.add( params, 'changeFont' ).name( 'change font' );
- gui.add( params, 'changeWeight' ).name( 'change weight' );
- gui.add( params, 'changeBevel' ).name( 'change bevel' );
- gui.open();
- //
- window.addEventListener( 'resize', onWindowResize );
- }
- function onWindowResize() {
- windowHalfX = window.innerWidth / 2;
- camera.aspect = window.innerWidth / window.innerHeight;
- camera.updateProjectionMatrix();
- renderer.setSize( window.innerWidth, window.innerHeight );
- }
- //
- function onDocumentKeyDown( event ) {
- if ( firstLetter ) {
- firstLetter = false;
- text = '';
- }
- const keyCode = event.keyCode;
- // backspace
- if ( keyCode == 8 ) {
- event.preventDefault();
- text = text.substring( 0, text.length - 1 );
- refreshText();
- return false;
- }
- }
- function onDocumentKeyPress( event ) {
- const keyCode = event.which;
- // backspace
- if ( keyCode == 8 ) {
- event.preventDefault();
- } else {
- const ch = String.fromCharCode( keyCode );
- text += ch;
- refreshText();
- }
- }
- function loadFont() {
- const loader = new FontLoader();
- loader.load( 'fonts/' + fontName + '_' + fontWeight + '.typeface.json', function ( response ) {
- font = response;
- refreshText();
- } );
- }
- function createText() {
- textGeo = new TextGeometry( text, {
- font: font,
- size: size,
- depth: depth,
- curveSegments: curveSegments,
- bevelThickness: bevelThickness,
- bevelSize: bevelSize,
- bevelEnabled: bevelEnabled
- } );
- textGeo.computeBoundingBox();
- const centerOffset = - 0.5 * ( textGeo.boundingBox.max.x - textGeo.boundingBox.min.x );
- textMesh1 = new THREE.Mesh( textGeo, materials );
- textMesh1.position.x = centerOffset;
- textMesh1.position.y = hover;
- textMesh1.position.z = 0;
- textMesh1.rotation.x = 0;
- textMesh1.rotation.y = Math.PI * 2;
- group.add( textMesh1 );
- if ( mirror ) {
- textMesh2 = new THREE.Mesh( textGeo, materials );
- textMesh2.position.x = centerOffset;
- textMesh2.position.y = - hover;
- textMesh2.position.z = depth;
- textMesh2.rotation.x = Math.PI;
- textMesh2.rotation.y = Math.PI * 2;
- group.add( textMesh2 );
- }
- }
- function refreshText() {
- group.remove( textMesh1 );
- if ( mirror ) group.remove( textMesh2 );
- if ( ! text ) return;
- createText();
- }
- function onPointerDown( event ) {
- if ( event.isPrimary === false ) return;
- pointerXOnPointerDown = event.clientX - windowHalfX;
- targetRotationOnPointerDown = targetRotation;
- document.addEventListener( 'pointermove', onPointerMove );
- document.addEventListener( 'pointerup', onPointerUp );
- }
- function onPointerMove( event ) {
- if ( event.isPrimary === false ) return;
- pointerX = event.clientX - windowHalfX;
- targetRotation = targetRotationOnPointerDown + ( pointerX - pointerXOnPointerDown ) * 0.02;
- }
- function onPointerUp() {
- if ( event.isPrimary === false ) return;
- document.removeEventListener( 'pointermove', onPointerMove );
- document.removeEventListener( 'pointerup', onPointerUp );
- }
- //
- function animate() {
- group.rotation.y += ( targetRotation - group.rotation.y ) * 0.05;
- camera.lookAt( cameraTarget );
- renderer.clear();
- renderer.render( scene, camera );
- }
- </script>
- </body>
- </html>
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