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webgl_geometry_text.html
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webgl_geometry_text.html
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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">
<style>
body {
font-family: Monospace;
background-color: #000;
color: #fff;
margin: 0px;
overflow: hidden;
}
#info {
position: absolute;
top: 10px;
width: 100%;
text-align: center;
z-index: 100;
display:block;
}
#info a, .button { color: #f00; font-weight: bold; text-decoration: underline; cursor: pointer }
</style>
</head>
<body>
<div id="info">
<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> & alteredq
<br/>type to enter new text, drag to spin the text
<br/><span class="button" id="color">change color</span>,
<span class="button" id="font">change font</span>,
<span class="button" id="weight">change weight</span>,
<span class="button" id="bevel">change bevel</span>
<a id="permalink" href="#">permalink</a>
</div>
<script src="../js/threejs/three.js"></script>
<script src="../js/utils/GeometryUtils.js"></script>
<script src="../js/WebGL.js"></script>
<script src="../js/libs/stats.min.js"></script>
<script>
if ( WEBGL.isWebGLAvailable() === false ) {
document.body.appendChild( WEBGL.getWebGLErrorMessage() );
}
THREE.Cache.enabled = true;
var container, stats, permalink, hex;
var camera, cameraTarget, scene, renderer;
var group, textMesh1, textMesh2, textGeo, materials;
var firstLetter = true;
var text = "three.js",
height = 20,
size = 70,
hover = 30,
curveSegments = 4,
bevelThickness = 2,
bevelSize = 1.5,
bevelEnabled = true,
font = undefined,
fontName = "optimer", // helvetiker, optimer, gentilis, droid sans, droid serif
fontWeight = "bold"; // normal bold
var mirror = true;
var fontMap = {
"helvetiker": 0,
"optimer": 1,
"gentilis": 2,
"droid/droid_sans": 3,
"droid/droid_serif": 4
};
var weightMap = {
"regular": 0,
"bold": 1
};
var reverseFontMap = [];
var reverseWeightMap = [];
for ( var i in fontMap ) reverseFontMap[ fontMap[ i ] ] = i;
for ( var i in weightMap ) reverseWeightMap[ weightMap[ i ] ] = i;
var targetRotation = 0;
var targetRotationOnMouseDown = 0;
var mouseX = 0;
var mouseXOnMouseDown = 0;
var windowHalfX = window.innerWidth / 2;
var fontIndex = 1;
init();
animate();
function decimalToHex( d ) {
var hex = Number( d ).toString( 16 );
hex = "000000".substr( 0, 6 - hex.length ) + hex;
return hex.toUpperCase();
}
function init() {
container = document.createElement( 'div' );
document.body.appendChild( container );
permalink = document.getElementById( "permalink" );
// 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
var dirLight = new THREE.DirectionalLight( 0xffffff, 0.125 );
dirLight.position.set( 0, 0, 1 ).normalize();
scene.add( dirLight );
var pointLight = new THREE.PointLight( 0xffffff, 1.5 );
pointLight.position.set( 0, 100, 90 );
scene.add( pointLight );
// Get text from hash
var hash = document.location.hash.substr( 1 );
if ( hash.length !== 0 ) {
var colorhash = hash.substring( 0, 6 );
var fonthash = hash.substring( 6, 7 );
var weighthash = hash.substring( 7, 8 );
var bevelhash = hash.substring( 8, 9 );
var texthash = hash.substring( 10 );
hex = colorhash;
pointLight.color.setHex( parseInt( colorhash, 16 ) );
fontName = reverseFontMap[ parseInt( fonthash ) ];
fontWeight = reverseWeightMap[ parseInt( weighthash ) ];
bevelEnabled = parseInt( bevelhash );
text = decodeURI( texthash );
updatePermalink();
} else {
pointLight.color.setHSL( Math.random(), 1, 0.5 );
hex = decimalToHex( pointLight.color.getHex() );
}
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();
var plane = new THREE.Mesh(
new THREE.PlaneBufferGeometry( 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 );
container.appendChild( renderer.domElement );
// STATS
stats = new Stats();
//container.appendChild( stats.dom );
// EVENTS
document.addEventListener( 'mousedown', onDocumentMouseDown, false );
document.addEventListener( 'touchstart', onDocumentTouchStart, false );
document.addEventListener( 'touchmove', onDocumentTouchMove, false );
document.addEventListener( 'keypress', onDocumentKeyPress, false );
document.addEventListener( 'keydown', onDocumentKeyDown, false );
document.getElementById( "color" ).addEventListener( 'click', function () {
pointLight.color.setHSL( Math.random(), 1, 0.5 );
hex = decimalToHex( pointLight.color.getHex() );
updatePermalink();
}, false );
document.getElementById( "font" ).addEventListener( 'click', function () {
fontIndex ++;
fontName = reverseFontMap[ fontIndex % reverseFontMap.length ];
loadFont();
}, false );
document.getElementById( "weight" ).addEventListener( 'click', function () {
if ( fontWeight === "bold" ) {
fontWeight = "regular";
} else {
fontWeight = "bold";
}
loadFont();
}, false );
document.getElementById( "bevel" ).addEventListener( 'click', function () {
bevelEnabled = ! bevelEnabled;
refreshText();
}, false );
//
window.addEventListener( 'resize', onWindowResize, false );
}
function onWindowResize() {
windowHalfX = window.innerWidth / 2;
camera.aspect = window.innerWidth / window.innerHeight;
camera.updateProjectionMatrix();
renderer.setSize( window.innerWidth, window.innerHeight );
}
//
function boolToNum( b ) {
return b ? 1 : 0;
}
function updatePermalink() {
var link = hex + fontMap[ fontName ] + weightMap[ fontWeight ] + boolToNum( bevelEnabled ) + "#" + encodeURI( text );
permalink.href = "#" + link;
window.location.hash = link;
}
function onDocumentKeyDown( event ) {
if ( firstLetter ) {
firstLetter = false;
text = "";
}
var keyCode = event.keyCode;
// backspace
if ( keyCode == 8 ) {
event.preventDefault();
text = text.substring( 0, text.length - 1 );
refreshText();
return false;
}
}
function onDocumentKeyPress( event ) {
var keyCode = event.which;
// backspace
if ( keyCode == 8 ) {
event.preventDefault();
} else {
var ch = String.fromCharCode( keyCode );
text += ch;
refreshText();
}
}
function loadFont() {
var loader = new THREE.FontLoader();
loader.load( '../fonts/' + fontName + '_' + fontWeight + '.typeface.json', function ( response ) {
font = response;
refreshText();
} );
}
function createText() {
textGeo = new THREE.TextGeometry( text, {
font: font,
size: size,
height: height,
curveSegments: curveSegments,
bevelThickness: bevelThickness,
bevelSize: bevelSize,
bevelEnabled: bevelEnabled
} );
textGeo.computeBoundingBox();
textGeo.computeVertexNormals();
// "fix" side normals by removing z-component of normals for side faces
// (this doesn't work well for beveled geometry as then we lose nice curvature around z-axis)
if ( ! bevelEnabled ) {
var triangleAreaHeuristics = 0.1 * ( height * size );
for ( var i = 0; i < textGeo.faces.length; i ++ ) {
var face = textGeo.faces[ i ];
if ( face.materialIndex == 1 ) {
for ( var j = 0; j < face.vertexNormals.length; j ++ ) {
face.vertexNormals[ j ].z = 0;
face.vertexNormals[ j ].normalize();
}
var va = textGeo.vertices[ face.a ];
var vb = textGeo.vertices[ face.b ];
var vc = textGeo.vertices[ face.c ];
var s = THREE.GeometryUtils.triangleArea( va, vb, vc );
if ( s > triangleAreaHeuristics ) {
for ( var j = 0; j < face.vertexNormals.length; j ++ ) {
face.vertexNormals[ j ].copy( face.normal );
}
}
}
}
}
var centerOffset = - 0.5 * ( textGeo.boundingBox.max.x - textGeo.boundingBox.min.x );
textGeo = new THREE.BufferGeometry().fromGeometry( textGeo );
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 = height;
textMesh2.rotation.x = Math.PI;
textMesh2.rotation.y = Math.PI * 2;
group.add( textMesh2 );
}
}
function refreshText() {
updatePermalink();
group.remove( textMesh1 );
if ( mirror ) group.remove( textMesh2 );
if ( ! text ) return;
createText();
}
function onDocumentMouseDown( event ) {
event.preventDefault();
document.addEventListener( 'mousemove', onDocumentMouseMove, false );
document.addEventListener( 'mouseup', onDocumentMouseUp, false );
document.addEventListener( 'mouseout', onDocumentMouseOut, false );
mouseXOnMouseDown = event.clientX - windowHalfX;
targetRotationOnMouseDown = targetRotation;
}
function onDocumentMouseMove( event ) {
mouseX = event.clientX - windowHalfX;
targetRotation = targetRotationOnMouseDown + ( mouseX - mouseXOnMouseDown ) * 0.02;
}
function onDocumentMouseUp() {
document.removeEventListener( 'mousemove', onDocumentMouseMove, false );
document.removeEventListener( 'mouseup', onDocumentMouseUp, false );
document.removeEventListener( 'mouseout', onDocumentMouseOut, false );
}
function onDocumentMouseOut() {
document.removeEventListener( 'mousemove', onDocumentMouseMove, false );
document.removeEventListener( 'mouseup', onDocumentMouseUp, false );
document.removeEventListener( 'mouseout', onDocumentMouseOut, false );
}
function onDocumentTouchStart( event ) {
if ( event.touches.length == 1 ) {
event.preventDefault();
mouseXOnMouseDown = event.touches[ 0 ].pageX - windowHalfX;
targetRotationOnMouseDown = targetRotation;
}
}
function onDocumentTouchMove( event ) {
if ( event.touches.length == 1 ) {
event.preventDefault();
mouseX = event.touches[ 0 ].pageX - windowHalfX;
targetRotation = targetRotationOnMouseDown + ( mouseX - mouseXOnMouseDown ) * 0.05;
}
}
//
function animate() {
requestAnimationFrame( animate );
render();
stats.update();
}
function render() {
group.rotation.y += ( targetRotation - group.rotation.y ) * 0.05;
camera.lookAt( cameraTarget );
renderer.clear();
renderer.render( scene, camera );
}
</script>
</body>
</html>