<!doctype html>
<html lang="en">
<head>
<title>Sprite Text Labels (Three.js)</title>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, user-scalable=no, minimum-scale=1.0, maximum-scale=1.0">
<link rel=stylesheet href="css/base.css"/>
</head>
<body>
<script src="js/Three.js"></script>
<script src="js/Detector.js"></script>
<script src="js/Stats.js"></script>
<script src="js/OrbitControls.js"></script>
<script src="js/THREEx.KeyboardState.js"></script>
<script src="js/THREEx.FullScreen.js"></script>
<script src="js/THREEx.WindowResize.js"></script>
<!-- jQuery code to display an information button and box when clicked. -->
<script src="js/jquery-1.9.1.js"></script>
<script src="js/jquery-ui.js"></script>
<link rel=stylesheet href="css/jquery-ui.css" />
<link rel=stylesheet href="css/info.css"/>
<script src="js/info.js"></script>
<div id="infoButton"></div>
<div id="infoBox" title="Demo Information">
This three.js demo is part of a collection at
<a href="
http://stemkoski.github.io/Three.js/">
http://stemkoski.github.io/Three.js/</a></div>
<!-- ------------------------------------------------------------ -->
<div id="ThreeJS" style="position: absolute; left:0px; top:0px"></div>
<script>
/*
Three.js "tutorials by example"
Author: Lee Stemkoski
Date: July 2013 (three.js v59dev)
*/
// MAIN
// standard global variables
var container, scene, camera, renderer, controls, stats;
var keyboard = new THREEx.KeyboardState();
var clock = new THREE.Clock();
// custom global variables
var cube;
var projector, mouse = { x: 0, y: 0 }, INTERSECTED;
var sprite1;
var canvas1, context1, texture1;
init();
animate();
// FUNCTIONS
function init()
{
// SCENE
scene = new THREE.Scene();
// CAMERA
var SCREEN_WIDTH = window.innerWidth, SCREEN_HEIGHT = window.innerHeight;
var VIEW_ANGLE = 45, ASPECT = SCREEN_WIDTH / SCREEN_HEIGHT, NEAR = 0.1, FAR = 20000;
camera = new THREE.PerspectiveCamera( VIEW_ANGLE, ASPECT, NEAR, FAR);
scene.add(camera);
camera.position.set(0,150,400);
camera.lookAt(scene.position);
// RENDERER
if ( Detector.webgl )
renderer = new THREE.WebGLRenderer( {antialias:true} );
else
renderer = new THREE.CanvasRenderer();
renderer.setSize(SCREEN_WIDTH, SCREEN_HEIGHT);
container = document.getElementById( 'ThreeJS' );
container.appendChild( renderer.domElement );
// EVENTS
THREEx.WindowResize(renderer, camera);
THREEx.FullScreen.bindKey({ charCode : 'm'.charCodeAt(0) });
// CONTROLS
controls = new THREE.OrbitControls( camera, renderer.domElement );
// STATS
stats = new Stats();
stats.domElement.style.position = 'absolute';
stats.domElement.style.bottom = '0px';
stats.domElement.style.zIndex = 100;
container.appendChild( stats.domElement );
// LIGHT
var light = new THREE.PointLight(0xffffff);
light.position.set(0,250,0);
scene.add(light);
// FLOOR
var floorTexture = new THREE.ImageUtils.loadTexture( 'images/checkerboard.jpg' );
floorTexture.wrapS = floorTexture.wrapT = THREE.RepeatWrapping;
floorTexture.repeat.set( 10, 10 );
var floorMaterial = new THREE.MeshBasicMaterial( { map: floorTexture, side: THREE.DoubleSide } );
var floorGeometry = new THREE.PlaneGeometry(1000, 1000, 10, 10);
var floor = new THREE.Mesh(floorGeometry, floorMaterial);
floor.position.y = -0.5;
floor.rotation.x = Math.PI / 2;
floor.name = "Checkerboard Floor";
scene.add(floor);
// SKYBOX/FOG
var skyBoxGeometry = new THREE.CubeGeometry( 10000, 10000, 10000 );
var skyBoxMaterial = new THREE.MeshBasicMaterial( { color: 0x9999ff, side: THREE.BackSide } );
var skyBox = new THREE.Mesh( skyBoxGeometry, skyBoxMaterial );
scene.add(skyBox);
////////////
// CUSTOM //
////////////
var cubeGeometry = new THREE.CubeGeometry( 100, 100, 100 );
var cubeMaterial = new THREE.MeshNormalMaterial();
cube = new THREE.Mesh( cubeGeometry, cubeMaterial );
cube.position.set(0,50.1,0);
cube.name = "Cube";
scene.add(cube);
var spritey = makeTextSprite( " Hello, ",
{ fontsize: 24, borderColor: {r:255, g:0, b:0, a:1.0}, backgroundColor: {r:255, g:100, b:100, a:0.8} } );
spritey.position.set(-85,105,55);
scene.add( spritey );
var spritey = makeTextSprite( " World! ",
{ fontsize: 32, fontface: "Georgia", borderColor: {r:0, g:0, b:255, a:1.0} } );
spritey.position.set(55,105,55);
scene.add( spritey );
}
function makeTextSprite( message, parameters )
{
if ( parameters === undefined ) parameters = {};
var fontface = parameters.hasOwnProperty("fontface") ?
parameters["fontface"] : "Arial";
var fontsize = parameters.hasOwnProperty("fontsize") ?
parameters["fontsize"] : 18;
var borderThickness = parameters.hasOwnProperty("borderThickness") ?
parameters["borderThickness"] : 4;
var borderColor = parameters.hasOwnProperty("borderColor") ?
parameters["borderColor"] : { r:0, g:0, b:0, a:1.0 };
var backgroundColor = parameters.hasOwnProperty("backgroundColor") ?
parameters["backgroundColor"] : { r:255, g:255, b:255, a:1.0 };
var spriteAlignment = THREE.SpriteAlignment.topLeft;
var canvas = document.createElement('canvas');
var context = canvas.getContext('2d');
context.font = "Bold " + fontsize + "px " + fontface;
// get size data (height depends only on font size)
var metrics = context.measureText( message );
var textWidth = metrics.width;
// background color
context.fillStyle = "rgba(" + backgroundColor.r + "," + backgroundColor.g + ","
+ backgroundColor.b + "," + backgroundColor.a + ")";
// border color
context.strokeStyle = "rgba(" + borderColor.r + "," + borderColor.g + ","
+ borderColor.b + "," + borderColor.a + ")";
context.lineWidth = borderThickness;
roundRect(context, borderThickness/2, borderThickness/2, textWidth + borderThickness, fontsize * 1.4 + borderThickness, 6);
// 1.4 is extra height factor for text below baseline: g,j,p,q.
// text color
context.fillStyle = "rgba(0, 0, 0, 1.0)";
context.fillText( message, borderThickness, fontsize + borderThickness);
// canvas contents will be used for a texture
var texture = new THREE.Texture(canvas)
texture.needsUpdate = true;
var spriteMaterial = new THREE.SpriteMaterial(
{ map: texture, useScreenCoordinates: false, alignment: spriteAlignment } );
var sprite = new THREE.Sprite( spriteMaterial );
sprite.scale.set(100,50,1.0);
return sprite;
}
// function for drawing rounded rectangles
function roundRect(ctx, x, y, w, h, r)
{
ctx.beginPath();
ctx.moveTo(x+r, y);
ctx.lineTo(x+w-r, y);
ctx.quadraticCurveTo(x+w, y, x+w, y+r);
ctx.lineTo(x+w, y+h-r);
ctx.quadraticCurveTo(x+w, y+h, x+w-r, y+h);
ctx.lineTo(x+r, y+h);
ctx.quadraticCurveTo(x, y+h, x, y+h-r);
ctx.lineTo(x, y+r);
ctx.quadraticCurveTo(x, y, x+r, y);
ctx.closePath();
ctx.fill();
ctx.stroke();
}
function animate()
{
requestAnimationFrame( animate );
render();
update();
}
function update()
{
controls.update();
stats.update();
}
function render()
{
renderer.render( scene, camera );
}
</script>
</body>
</html>
