three.js/src/extras/geometries/TextGeometry.js

/**
 * @author zz85 / http://www.lab4games.net/zz85/blog
 * @author alteredq / http://alteredqualia.com/
 *
 * Text = 3D Text
 *
 * parameters = {
 *  font: <THREE.Font>, // font
 *
 *  size: <float>, // size of the text
 *  height: <float>, // thickness to extrude text
 *  curveSegments: <int>, // number of points on the curves
 *
 *  bevelEnabled: <bool>, // turn on bevel
 *  bevelThickness: <float>, // how deep into text bevel goes
 *  bevelSize: <float> // how far from text outline is bevel
 * }
 */

THREE.TextGeometry = function ( text, parameters ) {

	parameters = parameters || {};

	var font = parameters.font;

	if ( font instanceof THREE.Font === false ) {

		console.error( 'THREE.TextGeometry: font parameter is not an instance of THREE.Font.' );
		return new THREE.Geometry();

	}

	var shapes = font.generateShapes( text, parameters.size, parameters.curveSegments );

	// translate parameters to ExtrudeGeometry API

	parameters.amount = parameters.height !== undefined ? parameters.height : 50;

	// defaults

	if ( parameters.bevelThickness === undefined ) parameters.bevelThickness = 10;
	if ( parameters.bevelSize === undefined ) parameters.bevelSize = 8;
	if ( parameters.bevelEnabled === undefined ) parameters.bevelEnabled = false;

	THREE.ExtrudeGeometry.call( this, shapes, parameters );

	this.type = 'TextGeometry';

};

THREE.TextGeometry.prototype = Object.create( THREE.ExtrudeGeometry.prototype );
THREE.TextGeometry.prototype.constructor = THREE.TextGeometry;