webglFramework/Thirdparty/three.js-master/examples/webgl_geometry_text_pnltri.html

   1 <!DOCTYPE html>
   2 <html lang="en">
   3         <head>
   4                 <title>three.js webgl - geometry - text</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                 <style>
   8                         body {
   9                                 font-family: Monospace;
  10                                 background-color: #000;
  11                                 color: #fff;
  12                                 margin: 0px;
  13                                 overflow: hidden;
  14                         }
  15                         #info {
  16                                 position: absolute;
  17                                 top: 10px;
  18                                 width: 100%;
  19                                 text-align: center;
  20                                 z-index: 100;
  21                                 display:block;
  22                         }
  23                         #info a, .button { color: #f00; font-weight: bold; text-decoration: underline; cursor: pointer }
  24                 </style>
  25         </head>
  26         <body>
  27
  28                 <div id="info">
  29                 <a href="http://threejs.org" target="_blank" rel="noopener">three.js</a> - procedural 3D text by <a href="http://www.lab4games.net/zz85/blog" target="_blank" rel="noopener">zz85</a> &amp; alteredq
  30                 <br/>built-in shape triangulation has been replaced with <a href="https://github.com/jahting/pnltri.js">PnlTri.js</a> by <a href="https://github.com/jahting" target="_blank" rel="noopener">j ahting</a>
  31                 <br/>type to enter new text, drag to spin the text
  32                 <br/><span class="button" id="color">change color</span>,
  33                         <span class="button" id="font">change font</span>,
  34                         <span class="button" id="weight">change weight</span>,
  35                         <span class="button" id="bevel">change bevel</span>
  36                         <a id="permalink" href="#">permalink</a>
  37                 </div>
  38
  39
  40                 <script src="../build/three.js"></script>
  41                 <script src="js/utils/GeometryUtils.js"></script>
  42
  43                 <script src="js/Detector.js"></script>
  44                 <script src="js/libs/stats.min.js"></script>
  45
  46
  47                 <!-- replace built-in triangulation with PnlTri.js -->
  48                 <script src="js/libs/pnltri.min.js"></script>
  49                 <script>
  50                         THREE.ShapeUtils.triangulateShape = ( function () {
  51                                 var pnlTriangulator = new PNLTRI.Triangulator();
  52                                 function removeDupEndPts(points) {
  53
  54                                         var l = points.length;
  55
  56                                         if ( l > 2 && points[ l - 1 ].equals( points[ 0 ] ) ) {
  57
  58                                                 points.pop();
  59
  60                                         }
  61
  62                                 }
  63
  64                                 return function triangulateShape( contour, holes ) {
  65                                         // console.log("new Triangulation: PnlTri.js " + PNLTRI.REVISION );
  66
  67                                         removeDupEndPts( contour );
  68                                         holes.forEach( removeDupEndPts );
  69
  70                                         return pnlTriangulator.triangulate_polygon( [ contour ].concat(holes) );
  71                                 };
  72                         } )();
  73                 </script>
  74
  75                 <script>
  76
  77                         if ( ! Detector.webgl ) Detector.addGetWebGLMessage();
  78
  79                         THREE.Cache.enabled = true;
  80
  81                         var container, stats, permalink, hex, color;
  82
  83                         var camera, cameraTarget, scene, renderer;
  84
  85                         var group, textMesh1, textMesh2, textGeo, materials;
  86
  87                         var firstLetter = true;
  88
  89                         var text = "PnlTri",
  90
  91                                 height = 20,
  92                                 size = 70,
  93                                 hover = 30,
  94
  95                                 curveSegments = 4,
  96
  97                                 bevelThickness = 2,
  98                                 bevelSize = 1.5,
  99                                 bevelSegments = 3,
 100                                 bevelEnabled = true,
 101
 102                                 font = undefined,
 103
 104                                 fontName = "optimer", // helvetiker, optimer, gentilis, droid sans, droid serif
 105                                 fontWeight = "bold"; // normal bold
 106
 107                         var mirror = true;
 108
 109                         var fontMap = {
 110
 111                                 "helvetiker": 0,
 112                                 "optimer": 1,
 113                                 "gentilis": 2,
 114                                 "droid/droid_sans": 3,
 115                                 "droid/droid_serif": 4
 116
 117                         };
 118
 119                         var weightMap = {
 120
 121                                 "regular": 0,
 122                                 "bold": 1
 123
 124                         };
 125
 126                         var reverseFontMap = [];
 127                         var reverseWeightMap = [];
 128
 129                         for ( var i in fontMap ) reverseFontMap[ fontMap[i] ] = i;
 130                         for ( var i in weightMap ) reverseWeightMap[ weightMap[i] ] = i;
 131
 132                         var targetRotation = 0;
 133                         var targetRotationOnMouseDown = 0;
 134
 135                         var mouseX = 0;
 136                         var mouseXOnMouseDown = 0;
 137
 138                         var windowHalfX = window.innerWidth / 2;
 139                         var windowHalfY = window.innerHeight / 2;
 140
 141                         var fontIndex = 1;
 142
 143                         init();
 144                         animate();
 145
 146                         function decimalToHex( d ) {
 147
 148                                 var hex = Number( d ).toString( 16 );
 149                                 hex = "000000".substr( 0, 6 - hex.length ) + hex;
 150                                 return hex.toUpperCase();
 151
 152                         }
 153
 154                         function init() {
 155
 156                                 container = document.createElement( 'div' );
 157                                 document.body.appendChild( container );
 158
 159                                 permalink = document.getElementById( "permalink" );
 160
 161                                 // CAMERA
 162
 163                                 camera = new THREE.PerspectiveCamera( 30, window.innerWidth / window.innerHeight, 1, 1500 );
 164                                 camera.position.set( 0, 400, 700 );
 165
 166                                 cameraTarget = new THREE.Vector3( 0, 150, 0 );
 167
 168                                 // SCENE
 169
 170                                 scene = new THREE.Scene();
 171                                 scene.background = new THREE.Color( 0x000000 );
 172                                 scene.fog = new THREE.Fog( 0x000000, 250, 1400 );
 173
 174                                 // LIGHTS
 175
 176                                 var dirLight = new THREE.DirectionalLight( 0xffffff, 0.125 );
 177                                 dirLight.position.set( 0, 0, 1 ).normalize();
 178                                 scene.add( dirLight );
 179
 180                                 var pointLight = new THREE.PointLight( 0xffffff, 1.5 );
 181                                 pointLight.position.set( 0, 100, 90 );
 182                                 scene.add( pointLight );
 183
 184                                 // Get text from hash
 185
 186                                 var hash = document.location.hash.substr( 1 );
 187
 188                                 if ( hash.length !== 0 ) {
 189
 190                                         var colorhash  = hash.substring( 0, 6 );
 191                                         var fonthash   = hash.substring( 6, 7 );
 192                                         var weighthash = hash.substring( 7, 8 );
 193                                         var bevelhash  = hash.substring( 8, 9 );
 194                                         var texthash   = hash.substring( 10 );
 195
 196                                         hex = colorhash;
 197                                         pointLight.color.setHex( parseInt( colorhash, 16 ) );
 198
 199                                         fontName = reverseFontMap[ parseInt( fonthash ) ];
 200                                         fontWeight = reverseWeightMap[ parseInt( weighthash ) ];
 201
 202                                         bevelEnabled = parseInt( bevelhash );
 203
 204                                         text = decodeURI( texthash );
 205
 206                                         updatePermalink();
 207
 208                                 } else {
 209
 210                                         pointLight.color.setHSL( Math.random(), 1, 0.5 );
 211                                         hex = decimalToHex( pointLight.color.getHex() );
 212
 213                                 }
 214
 215                                 materials = [
 216                                         new THREE.MeshPhongMaterial( { color: 0xffffff, flatShading: true } ), // front
 217                                         new THREE.MeshPhongMaterial( { color: 0xffffff } ) // side
 218                                 ];
 219
 220                                 group = new THREE.Group();
 221                                 group.position.y = 100;
 222
 223                                 scene.add( group );
 224
 225                                 loadFont();
 226
 227                                 var plane = new THREE.Mesh(
 228                                         new THREE.PlaneBufferGeometry( 10000, 10000 ),
 229                                         new THREE.MeshBasicMaterial( { color: 0xffffff, opacity: 0.5, transparent: true } )
 230                                 );
 231                                 plane.position.y = 100;
 232                                 plane.rotation.x = - Math.PI / 2;
 233                                 scene.add( plane );
 234
 235                                 // RENDERER
 236
 237                                 renderer = new THREE.WebGLRenderer( { antialias: true } );
 238                                 renderer.setPixelRatio( window.devicePixelRatio );
 239                                 renderer.setSize( window.innerWidth, window.innerHeight );
 240                                 container.appendChild( renderer.domElement );
 241
 242                                 // STATS
 243
 244                                 stats = new Stats();
 245                                 //container.appendChild( stats.dom );
 246
 247                                 // EVENTS
 248
 249                                 document.addEventListener( 'mousedown', onDocumentMouseDown, false );
 250                                 document.addEventListener( 'touchstart', onDocumentTouchStart, false );
 251                                 document.addEventListener( 'touchmove', onDocumentTouchMove, false );
 252                                 document.addEventListener( 'keypress', onDocumentKeyPress, false );
 253                                 document.addEventListener( 'keydown', onDocumentKeyDown, false );
 254
 255                                 document.getElementById( "color" ).addEventListener( 'click', function() {
 256
 257                                         pointLight.color.setHSL( Math.random(), 1, 0.5 );
 258                                         hex = decimalToHex( pointLight.color.getHex() );
 259
 260                                         updatePermalink();
 261
 262                                 }, false );
 263
 264                                 document.getElementById( "font" ).addEventListener( 'click', function() {
 265
 266                                         fontIndex ++;
 267
 268                                         fontName = reverseFontMap[ fontIndex % reverseFontMap.length ];
 269
 270                                         loadFont();
 271
 272                                 }, false );
 273
 274
 275                                 document.getElementById( "weight" ).addEventListener( 'click', function() {
 276
 277                                         if ( fontWeight === "bold" ) {
 278
 279                                                 fontWeight = "regular";
 280
 281                                         } else {
 282
 283                                                 fontWeight = "bold";
 284
 285                                         }
 286
 287                                         loadFont();
 288
 289                                 }, false );
 290
 291                                 document.getElementById( "bevel" ).addEventListener( 'click', function() {
 292
 293                                         bevelEnabled = !bevelEnabled;
 294
 295                                         refreshText();
 296
 297                                 }, false );
 298
 299                                 //
 300
 301                                 window.addEventListener( 'resize', onWindowResize, false );
 302
 303                         }
 304
 305                         function onWindowResize() {
 306
 307                                 windowHalfX = window.innerWidth / 2;
 308                                 windowHalfY = window.innerHeight / 2;
 309
 310                                 camera.aspect = window.innerWidth / window.innerHeight;
 311                                 camera.updateProjectionMatrix();
 312
 313                                 renderer.setSize( window.innerWidth, window.innerHeight );
 314
 315                         }
 316
 317                         //
 318
 319                         function boolToNum( b ) {
 320
 321                                 return b ? 1 : 0;
 322
 323                         }
 324
 325                         function updatePermalink() {
 326
 327                                 var link = hex + fontMap[ fontName ] + weightMap[ fontWeight ] + boolToNum( bevelEnabled ) + "#" + encodeURI( text );
 328
 329                                 permalink.href = "#" + link;
 330                                 window.location.hash = link;
 331
 332                         }
 333
 334                         function onDocumentKeyDown( event ) {
 335
 336                                 if ( firstLetter ) {
 337
 338                                         firstLetter = false;
 339                                         text = "";
 340
 341                                 }
 342
 343                                 var keyCode = event.keyCode;
 344
 345                                 // backspace
 346
 347                                 if ( keyCode == 8 ) {
 348
 349                                         event.preventDefault();
 350
 351                                         text = text.substring( 0, text.length - 1 );
 352                                         refreshText();
 353
 354                                         return false;
 355
 356                                 }
 357
 358                         }
 359
 360                         function onDocumentKeyPress( event ) {
 361
 362                                 var keyCode = event.which;
 363
 364                                 // backspace
 365
 366                                 if ( keyCode == 8 ) {
 367
 368                                         event.preventDefault();
 369
 370                                 } else {
 371
 372                                         var ch = String.fromCharCode( keyCode );
 373                                         text += ch;
 374
 375                                         refreshText();
 376
 377                                 }
 378
 379                         }
 380
 381                         function loadFont() {
 382
 383                                 var loader = new THREE.FontLoader();
 384                                 loader.load( 'fonts/' + fontName + '_' + fontWeight + '.typeface.json', function ( response ) {
 385
 386                                         font = response;
 387
 388                                         refreshText();
 389
 390                                 } );
 391
 392                         }
 393
 394                         function createText() {
 395
 396                                 textGeo = new THREE.TextBufferGeometry( text, {
 397
 398                                         font: font,
 399
 400                                         size: size,
 401                                         height: height,
 402                                         curveSegments: curveSegments,
 403
 404                                         bevelThickness: bevelThickness,
 405                                         bevelSize: bevelSize,
 406                                         bevelEnabled: bevelEnabled,
 407
 408                                         material: 0,
 409                                         extrudeMaterial: 1
 410
 411                                 });
 412
 413                                 textGeo.computeBoundingBox();
 414                                 textGeo.computeVertexNormals();
 415
 416                                 // "fix" side normals by removing z-component of normals for side faces
 417                                 // (this doesn't work well for beveled geometry as then we lose nice curvature around z-axis)
 418
 419                                 if ( ! bevelEnabled ) {
 420
 421                                         var triangleAreaHeuristics = 0.1 * ( height * size );
 422
 423                                         for ( var i = 0; i < textGeo.faces.length; i ++ ) {
 424
 425                                                 var face = textGeo.faces[ i ];
 426
 427                                                 if ( face.materialIndex == 1 ) {
 428
 429                                                         for ( var j = 0; j < face.vertexNormals.length; j ++ ) {
 430
 431                                                                 face.vertexNormals[ j ].z = 0;
 432                                                                 face.vertexNormals[ j ].normalize();
 433
 434                                                         }
 435
 436                                                         var va = textGeo.vertices[ face.a ];
 437                                                         var vb = textGeo.vertices[ face.b ];
 438                                                         var vc = textGeo.vertices[ face.c ];
 439
 440                                                         var s = THREE.GeometryUtils.triangleArea( va, vb, vc );
 441
 442                                                         if ( s > triangleAreaHeuristics ) {
 443
 444                                                                 for ( var j = 0; j < face.vertexNormals.length; j ++ ) {
 445
 446                                                                         face.vertexNormals[ j ].copy( face.normal );
 447
 448                                                                 }
 449
 450                                                         }
 451
 452                                                 }
 453
 454                                         }
 455
 456                                 }
 457
 458                                 var centerOffset = -0.5 * ( textGeo.boundingBox.max.x - textGeo.boundingBox.min.x );
 459
 460                                 textMesh1 = new THREE.Mesh( textGeo, materials );
 461
 462                                 textMesh1.position.x = centerOffset;
 463                                 textMesh1.position.y = hover;
 464                                 textMesh1.position.z = 0;
 465
 466                                 textMesh1.rotation.x = 0;
 467                                 textMesh1.rotation.y = Math.PI * 2;
 468
 469                                 group.add( textMesh1 );
 470
 471                                 if ( mirror ) {
 472
 473                                         textMesh2 = new THREE.Mesh( textGeo, materials );
 474
 475                                         textMesh2.position.x = centerOffset;
 476                                         textMesh2.position.y = -hover;
 477                                         textMesh2.position.z = height;
 478
 479                                         textMesh2.rotation.x = Math.PI;
 480                                         textMesh2.rotation.y = Math.PI * 2;
 481
 482                                         group.add( textMesh2 );
 483
 484                                 }
 485
 486                         }
 487
 488                         function refreshText() {
 489
 490                                 updatePermalink();
 491
 492                                 group.remove( textMesh1 );
 493                                 if ( mirror ) group.remove( textMesh2 );
 494
 495                                 if ( !text ) return;
 496
 497                                 createText();
 498
 499                         }
 500
 501                         function onDocumentMouseDown( event ) {
 502
 503                                 event.preventDefault();
 504
 505                                 document.addEventListener( 'mousemove', onDocumentMouseMove, false );
 506                                 document.addEventListener( 'mouseup', onDocumentMouseUp, false );
 507                                 document.addEventListener( 'mouseout', onDocumentMouseOut, false );
 508
 509                                 mouseXOnMouseDown = event.clientX - windowHalfX;
 510                                 targetRotationOnMouseDown = targetRotation;
 511
 512                         }
 513
 514                         function onDocumentMouseMove( event ) {
 515
 516                                 mouseX = event.clientX - windowHalfX;
 517
 518                                 targetRotation = targetRotationOnMouseDown + ( mouseX - mouseXOnMouseDown ) * 0.02;
 519
 520                         }
 521
 522                         function onDocumentMouseUp( event ) {
 523
 524                                 document.removeEventListener( 'mousemove', onDocumentMouseMove, false );
 525                                 document.removeEventListener( 'mouseup', onDocumentMouseUp, false );
 526                                 document.removeEventListener( 'mouseout', onDocumentMouseOut, false );
 527
 528                         }
 529
 530                         function onDocumentMouseOut( event ) {
 531
 532                                 document.removeEventListener( 'mousemove', onDocumentMouseMove, false );
 533                                 document.removeEventListener( 'mouseup', onDocumentMouseUp, false );
 534                                 document.removeEventListener( 'mouseout', onDocumentMouseOut, false );
 535
 536                         }
 537
 538                         function onDocumentTouchStart( event ) {
 539
 540                                 if ( event.touches.length == 1 ) {
 541
 542                                         event.preventDefault();
 543
 544                                         mouseXOnMouseDown = event.touches[ 0 ].pageX - windowHalfX;
 545                                         targetRotationOnMouseDown = targetRotation;
 546
 547                                 }
 548
 549                         }
 550
 551                         function onDocumentTouchMove( event ) {
 552
 553                                 if ( event.touches.length == 1 ) {
 554
 555                                         event.preventDefault();
 556
 557                                         mouseX = event.touches[ 0 ].pageX - windowHalfX;
 558                                         targetRotation = targetRotationOnMouseDown + ( mouseX - mouseXOnMouseDown ) * 0.05;
 559
 560                                 }
 561
 562                         }
 563
 564                         //
 565
 566                         function animate() {
 567
 568                                 requestAnimationFrame( animate );
 569
 570                                 render();
 571                                 stats.update();
 572
 573                         }
 574
 575                         function render() {
 576
 577                                 group.rotation.y += ( targetRotation - group.rotation.y ) * 0.05;
 578
 579                                 camera.lookAt( cameraTarget );
 580
 581                                 renderer.clear();
 582                                 renderer.render( scene, camera );
 583
 584                         }
 585
 586                 </script>
 587
 588         </body>
 589 </html>