Doodle3D-Slicer/three.js-master/examples/webgl_geometry_text2.html
2017-06-22 13:21:07 +02:00

670 lines
16 KiB
HTML
Executable File

<!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">three.js</a> - procedural 3D text by <a href="http://www.lab4games.net/zz85/blog" target="_blank">zz85</a> &amp; alteredq
(fonts from <a href="http://typeface.neocracy.org/">typeface.js</a> and <a href="http://en.wikipedia.org/wiki/Droid_%28font%29">Droid</a>)
<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">j ahting</a>
<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>,
<span class="button" id="postprocessing">change postprocessing</span>,
<a id="permalink" href="#">permalink</a>
</div>
<script src="../build/three.min.js"></script>
<script src="js/utils/GeometryUtils.js"></script>
<script src="js/shaders/ConvolutionShader.js"></script>
<script src="js/shaders/CopyShader.js"></script>
<script src="js/shaders/FilmShader.js"></script>
<script src="js/shaders/FXAAShader.js"></script>
<script src="js/postprocessing/EffectComposer.js"></script>
<script src="js/postprocessing/RenderPass.js"></script>
<script src="js/postprocessing/ShaderPass.js"></script>
<script src="js/postprocessing/MaskPass.js"></script>
<script src="js/postprocessing/BloomPass.js"></script>
<script src="js/postprocessing/FilmPass.js"></script>
<script src="js/Detector.js"></script>
<script src="js/libs/stats.min.js"></script>
<!-- load the font files -->
<script src="fonts/gentilis_bold.typeface.js"></script>
<script src="fonts/gentilis_regular.typeface.js"></script>
<script src="fonts/optimer_bold.typeface.js"></script>
<script src="fonts/optimer_regular.typeface.js"></script>
<script src="fonts/helvetiker_bold.typeface.js"></script>
<script src="fonts/helvetiker_regular.typeface.js"></script>
<script src="fonts/droid/droid_sans_regular.typeface.js"></script>
<script src="fonts/droid/droid_sans_bold.typeface.js"></script>
<script src="fonts/droid/droid_serif_regular.typeface.js"></script>
<script src="fonts/droid/droid_serif_bold.typeface.js"></script>
<!-- todo async loader for fonts -->
<!-- replace built-in triangulation with PnlTri.js -->
<script src="js/libs/pnltri.min.js"></script>
<script>
THREE.Shape.Utils.triangulateShape = ( function () {
var pnlTriangulator = new PNLTRI.Triangulator();
return function ( contour, holes ) {
// console.log("new Triangulation: PnlTri.js " + PNLTRI.REVISION );
return pnlTriangulator.triangulate_polygon( [ contour ].concat(holes) );
};
} )();
</script>
<script>
if ( ! Detector.webgl ) Detector.addGetWebGLMessage();
var container, stats, permalink, hex, color;
var camera, cameraTarget, scene, renderer;
var composer;
var effectFXAA;
var group, textMesh1, textMesh2, textGeo, material;
var firstLetter = true;
var text = "three.js",
height = 20,
size = 70,
hover = 30,
curveSegments = 4,
bevelThickness = 2,
bevelSize = 1.5,
bevelSegments = 3,
bevelEnabled = true,
font = "optimer", // helvetiker, optimer, gentilis, droid sans, droid serif
weight = "bold", // normal bold
style = "normal"; // normal italic
var mirror = true;
var fontMap = {
"helvetiker": 0,
"optimer": 1,
"gentilis": 2,
"droid sans": 3,
"droid serif": 4
};
var weightMap = {
"normal": 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 windowHalfY = window.innerHeight / 2;
var postprocessing = { enabled : false };
var glow = 0.9;
init();
animate();
function capitalize( txt ) {
return txt.substring( 0, 1 ).toUpperCase() + txt.substring( 1 );
}
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.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 );
//text = capitalize( font ) + " " + capitalize( weight );
//text = "abcdefghijklmnopqrstuvwxyz0123456789";
//text = "ABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789";
// 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 pphash = hash.substring( 8, 9 );
var bevelhash = hash.substring( 9, 10 );
var texthash = hash.substring( 10 );
hex = colorhash;
pointLight.color.setHex( parseInt( colorhash, 16 ) );
font = reverseFontMap[ parseInt( fonthash ) ];
weight = reverseWeightMap[ parseInt( weighthash ) ];
postprocessing.enabled = parseInt( pphash );
bevelEnabled = parseInt( bevelhash );
text = decodeURI( texthash );
updatePermalink();
} else {
pointLight.color.setHSL( Math.random(), 1, 0.5 );
hex = decimalToHex( pointLight.color.getHex() );
}
material = new THREE.MeshFaceMaterial( [
new THREE.MeshPhongMaterial( { color: 0xffffff, shading: THREE.FlatShading } ), // front
new THREE.MeshPhongMaterial( { color: 0xffffff, shading: THREE.SmoothShading } ) // side
] );
group = new THREE.Group();
group.position.y = 100;
scene.add( group );
createText();
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.setClearColor( scene.fog.color );
renderer.setPixelRatio( window.devicePixelRatio );
renderer.setSize( window.innerWidth, window.innerHeight );
container.appendChild( renderer.domElement );
// STATS
stats = new Stats();
stats.domElement.style.position = 'absolute';
stats.domElement.style.top = '0px';
//container.appendChild( stats.domElement );
// 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() {
if ( font == "helvetiker" ) {
font = "optimer";
} else if ( font == "optimer" ) {
font = "gentilis";
} else if ( font == "gentilis" ) {
font = "droid sans";
} else if ( font == "droid sans" ) {
font = "droid serif";
} else {
font = "helvetiker";
}
refreshText();
}, false );
document.getElementById( "weight" ).addEventListener( 'click', function() {
if ( weight == "bold" ) {
weight = "normal";
} else {
weight = "bold";
}
refreshText();
}, false );
document.getElementById( "bevel" ).addEventListener( 'click', function() {
bevelEnabled = !bevelEnabled;
refreshText();
}, false );
document.getElementById( "postprocessing" ).addEventListener( 'click', function() {
postprocessing.enabled = !postprocessing.enabled;
updatePermalink();
}, false );
// POSTPROCESSING
renderer.autoClear = false;
var renderModel = new THREE.RenderPass( scene, camera );
var effectBloom = new THREE.BloomPass( 0.25 );
var effectFilm = new THREE.FilmPass( 0.5, 0.125, 2048, false );
effectFXAA = new THREE.ShaderPass( THREE.FXAAShader );
var width = window.innerWidth || 2;
var height = window.innerHeight || 2;
effectFXAA.uniforms[ 'resolution' ].value.set( 1 / width, 1 / height );
effectFilm.renderToScreen = true;
composer = new THREE.EffectComposer( renderer );
composer.addPass( renderModel );
composer.addPass( effectFXAA );
composer.addPass( effectBloom );
composer.addPass( effectFilm );
//
window.addEventListener( 'resize', onWindowResize, false );
}
function onWindowResize() {
windowHalfX = window.innerWidth / 2;
windowHalfY = window.innerHeight / 2;
camera.aspect = window.innerWidth / window.innerHeight;
camera.updateProjectionMatrix();
renderer.setSize( window.innerWidth, window.innerHeight );
composer.reset();
effectFXAA.uniforms[ 'resolution' ].value.set( 1 / window.innerWidth, 1 / window.innerHeight );
}
//
function boolToNum( b ) {
return b ? 1 : 0;
}
function updatePermalink() {
var link = hex + fontMap[ font ] + weightMap[ weight ] + boolToNum( postprocessing.enabled ) + 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 createText() {
textGeo = new THREE.TextGeometry( text, {
size: size,
height: height,
curveSegments: curveSegments,
font: font,
weight: weight,
style: style,
bevelThickness: bevelThickness,
bevelSize: bevelSize,
bevelEnabled: bevelEnabled,
material: 0,
extrudeMaterial: 1
});
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 );
textMesh1 = new THREE.Mesh( textGeo, material );
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, material );
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( event ) {
document.removeEventListener( 'mousemove', onDocumentMouseMove, false );
document.removeEventListener( 'mouseup', onDocumentMouseUp, false );
document.removeEventListener( 'mouseout', onDocumentMouseOut, false );
}
function onDocumentMouseOut( event ) {
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();
if ( postprocessing.enabled ) {
composer.render( 0.05 );
} else {
renderer.render( scene, camera );
}
}
</script>
</body>
</html>