webgl_geometry_text_stroke.html 5.0 KB

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  1. <!DOCTYPE html>
  2. <html lang="en">
  3. <head>
  4. <title>three.js webgl - simple text from json</title>
  5. <meta charset="utf-8">
  6. <meta name="viewport" content="width=device-width, user-scalable=no, minimum-scale=1.0, maximum-scale=1.0">
  7. <meta property="og:title" content="three.js webgl - simple text from json">
  8. <meta property="og:type" content="website">
  9. <meta property="og:url" content="https://threejs.org/examples/webgl_geometry_text_stroke.html">
  10. <meta property="og:image" content="https://threejs.org/examples/screenshots/webgl_geometry_text_stroke.jpg">
  11. <link type="text/css" rel="stylesheet" href="main.css">
  12. <style>
  13. body {
  14. background-color: #f0f0f0;
  15. color: #444;
  16. }
  17. a {
  18. color: #08f;
  19. }
  20. </style>
  21. </head>
  22. <body>
  23. <div id="info">
  24. <a href="https://threejs.org" target="_blank" rel="noopener">three.js</a> webgl - simple text from json fonts
  25. </div>
  26. <script type="importmap">
  27. {
  28. "imports": {
  29. "three": "../build/three.module.js",
  30. "three/addons/": "./jsm/"
  31. }
  32. }
  33. </script>
  34. <script type="module">
  35. import * as THREE from 'three';
  36. import { OrbitControls } from 'three/addons/controls/OrbitControls.js';
  37. import { SVGLoader } from 'three/addons/loaders/SVGLoader.js';
  38. import { FontLoader } from 'three/addons/loaders/FontLoader.js';
  39. let camera, scene, renderer;
  40. init();
  41. function init( ) {
  42. camera = new THREE.PerspectiveCamera( 45, window.innerWidth / window.innerHeight, 1, 10000 );
  43. camera.position.set( 0, - 400, 1000 );
  44. scene = new THREE.Scene();
  45. scene.background = new THREE.Color( 0xf0f0f0 );
  46. const loader = new FontLoader();
  47. loader.load( 'fonts/MPLUSRounded1c/MPLUSRounded1c-Regular.typeface.json', function ( font ) {
  48. const color = new THREE.Color( 0x006699 );
  49. const matDark = new THREE.MeshBasicMaterial( {
  50. color: color,
  51. side: THREE.DoubleSide
  52. } );
  53. const matLite = new THREE.MeshBasicMaterial( {
  54. color: color,
  55. transparent: true,
  56. opacity: 0.4,
  57. side: THREE.DoubleSide
  58. } );
  59. const material = {
  60. dark: matDark,
  61. lite: matLite,
  62. color: color
  63. };
  64. const english = ' Three.js\nStroke text.'; // Left to right
  65. const hebrew = 'טקסט קו'; // Right to left
  66. const chinese = '文字描邊'; // Top to bottom
  67. const message1 = generateStrokeText( font, material, english, 80, 'ltr' );
  68. const message2 = generateStrokeText( font, material, hebrew, 80, 'rtl' );
  69. const message3 = generateStrokeText( font, material, chinese, 80, 'tb' );
  70. message1.position.x = - 100;
  71. message2.position.x = - 100;
  72. message2.position.y = - 300;
  73. message3.position.x = 300;
  74. message3.position.y = - 300;
  75. scene.add( message1, message2, message3 );
  76. render();
  77. } ); //end load function
  78. renderer = new THREE.WebGLRenderer( { antialias: true } );
  79. renderer.setPixelRatio( window.devicePixelRatio );
  80. renderer.setSize( window.innerWidth, window.innerHeight );
  81. document.body.appendChild( renderer.domElement );
  82. const controls = new OrbitControls( camera, renderer.domElement );
  83. controls.target.set( 0, 0, 0 );
  84. controls.update();
  85. controls.addEventListener( 'change', render );
  86. window.addEventListener( 'resize', onWindowResize );
  87. } // end init
  88. function generateStrokeText( font, material, message, size, direction = 'ltr' ) {
  89. const shapes = font.generateShapes( message, size, direction );
  90. const geometry = new THREE.ShapeGeometry( shapes );
  91. const strokeText = new THREE.Group();
  92. geometry.computeBoundingBox();
  93. const xMid = - 0.5 * ( geometry.boundingBox.max.x - geometry.boundingBox.min.x );
  94. geometry.translate( xMid, 0, 0 );
  95. // make shape ( N.B. edge view not visible )
  96. const text = new THREE.Mesh( geometry, material.lite );
  97. text.position.z = - 150;
  98. strokeText.add( text );
  99. // make line shape ( N.B. edge view remains visible )
  100. const holeShapes = [];
  101. for ( let i = 0; i < shapes.length; i ++ ) {
  102. const shape = shapes[ i ];
  103. if ( shape.holes && shape.holes.length > 0 ) {
  104. for ( let j = 0; j < shape.holes.length; j ++ ) {
  105. const hole = shape.holes[ j ];
  106. holeShapes.push( hole );
  107. }
  108. }
  109. }
  110. shapes.push( ...holeShapes );
  111. const style = SVGLoader.getStrokeStyle( 5, material.color.getStyle() );
  112. for ( let i = 0; i < shapes.length; i ++ ) {
  113. const shape = shapes[ i ];
  114. const points = shape.getPoints();
  115. const geometry = SVGLoader.pointsToStroke( points, style );
  116. geometry.translate( xMid, 0, 0 );
  117. const strokeMesh = new THREE.Mesh( geometry, material.dark );
  118. strokeText.add( strokeMesh );
  119. }
  120. return strokeText;
  121. }
  122. function onWindowResize() {
  123. camera.aspect = window.innerWidth / window.innerHeight;
  124. camera.updateProjectionMatrix();
  125. renderer.setSize( window.innerWidth, window.innerHeight );
  126. render();
  127. }
  128. function render() {
  129. renderer.render( scene, camera );
  130. }
  131. </script>
  132. </body>
  133. </html>
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