mirror of
https://github.com/wahyd4/three.js.git
synced 2026-08-09 04:56:01 +10:00
Mr.doob
76e7ea3461
WebGLRenderer antialias is off by default (considering Firefox doesn't support it...) Formatting clean up here and there
231 lines
5.3 KiB
HTML
231 lines
5.3 KiB
HTML
<!DOCTYPE HTML>
|
|
<html lang="en">
|
|
<head>
|
|
<title>three.js webgl - geometry - terrain</title>
|
|
<meta charset="utf-8">
|
|
<style type="text/css">
|
|
body {
|
|
color: #61443e;
|
|
font-family:Monospace;
|
|
font-size:13px;
|
|
text-align:center;
|
|
|
|
background-color: #bfd1e5;
|
|
margin: 0px;
|
|
overflow: hidden;
|
|
}
|
|
|
|
#info {
|
|
position: absolute;
|
|
top: 0px; width: 100%;
|
|
padding: 5px;
|
|
}
|
|
|
|
a {
|
|
|
|
color: #a06851;
|
|
}
|
|
|
|
</style>
|
|
</head>
|
|
<body>
|
|
|
|
<div id="container"><br /><br /><br /><br /><br />Generating world...</div>
|
|
<div id="info"><a href="http://github.com/mrdoob/three.js" target="_blank">three.js</a> - webgl terrain demo<br />(left click: forward, right click: backward)</div>
|
|
|
|
<script type="text/javascript" src="../build/Three.js"></script>
|
|
|
|
<script type="text/javascript" src="js/ImprovedNoise.js"></script>
|
|
|
|
<script type="text/javascript" src="js/Detector.js"></script>
|
|
<script type="text/javascript" src="js/RequestAnimationFrame.js"></script>
|
|
<script type="text/javascript" src="js/Stats.js"></script>
|
|
|
|
<script type="text/javascript">
|
|
|
|
if ( ! Detector.webgl ) {
|
|
|
|
Detector.addGetWebGLMessage();
|
|
document.getElementById( 'container' ).innerHTML = "";
|
|
|
|
}
|
|
|
|
var container, stats;
|
|
|
|
var camera, scene, renderer;
|
|
|
|
var mesh, texture;
|
|
|
|
var worldWidth = 256, worldDepth = 256,
|
|
worldHalfWidth = worldWidth / 2, worldHalfDepth = worldDepth / 2;
|
|
|
|
|
|
init();
|
|
animate();
|
|
|
|
function init() {
|
|
|
|
container = document.getElementById( 'container' );
|
|
|
|
camera = new THREE.QuakeCamera( {
|
|
|
|
fov: 60, aspect: window.innerWidth / window.innerHeight, near: 1, far: 20000,
|
|
movementSpeed: 15, lookSpeed: 0.004, noFly: false, lookVertical: true
|
|
|
|
} );
|
|
|
|
camera.target.position.z = - 100;
|
|
|
|
scene = new THREE.Scene();
|
|
|
|
data = generateHeight( worldWidth, worldDepth );
|
|
|
|
camera.position.y = data[ worldHalfWidth + worldHalfDepth * worldWidth ] + 500;
|
|
camera.target.position.y = camera.position.y;
|
|
|
|
var geometry = new THREE.Plane( 7500, 7500, worldWidth - 1, worldDepth - 1 );
|
|
|
|
for ( var i = 0, l = geometry.vertices.length; i < l; i ++ ) {
|
|
|
|
geometry.vertices[ i ].position.z = data[ i ] * 10;
|
|
|
|
}
|
|
|
|
texture = new THREE.Texture( generateTexture( data, worldWidth, worldDepth ), new THREE.UVMapping(), THREE.ClampToEdgeWrapping, THREE.ClampToEdgeWrapping );
|
|
texture.needsUpdate = true;
|
|
|
|
mesh = new THREE.Mesh( geometry, new THREE.MeshBasicMaterial( { map: texture } ) );
|
|
mesh.rotation.x = - 90 * Math.PI / 180;
|
|
scene.addObject( mesh );
|
|
|
|
renderer = new THREE.WebGLRenderer();
|
|
renderer.setSize( window.innerWidth, window.innerHeight );
|
|
|
|
container.innerHTML = "";
|
|
|
|
container.appendChild( renderer.domElement );
|
|
|
|
stats = new Stats();
|
|
stats.domElement.style.position = 'absolute';
|
|
stats.domElement.style.top = '0px';
|
|
container.appendChild( stats.domElement );
|
|
|
|
}
|
|
|
|
function generateHeight( width, height ) {
|
|
|
|
var size = width * height, data = new Float32Array( size ),
|
|
perlin = new ImprovedNoise(), quality = 1, z = Math.random() * 100;
|
|
|
|
for ( var i = 0; i < size; i ++ ) {
|
|
|
|
data[ i ] = 0
|
|
|
|
}
|
|
|
|
for ( var j = 0; j < 4; j ++ ) {
|
|
|
|
for ( var i = 0; i < size; i ++ ) {
|
|
|
|
var x = i % width, y = ~~ ( i / width );
|
|
data[ i ] += Math.abs( perlin.noise( x / quality, y / quality, z ) * quality * 1.75 );
|
|
|
|
|
|
}
|
|
|
|
quality *= 5;
|
|
|
|
}
|
|
|
|
return data;
|
|
|
|
}
|
|
|
|
function generateTexture( data, width, height ) {
|
|
|
|
var canvas, canvasScaled, context, image, imageData,
|
|
level, diff, vector3, sun, shade;
|
|
|
|
vector3 = new THREE.Vector3( 0, 0, 0 );
|
|
|
|
sun = new THREE.Vector3( 1, 1, 1 );
|
|
sun.normalize();
|
|
|
|
canvas = document.createElement( 'canvas' );
|
|
canvas.width = width;
|
|
canvas.height = height;
|
|
|
|
context = canvas.getContext( '2d' );
|
|
context.fillStyle = '#000';
|
|
context.fillRect( 0, 0, width, height );
|
|
|
|
image = context.getImageData( 0, 0, canvas.width, canvas.height );
|
|
imageData = image.data;
|
|
|
|
for ( var i = 0, j = 0, l = imageData.length; i < l; i += 4, j ++ ) {
|
|
|
|
vector3.x = data[ j - 2 ] - data[ j + 2 ];
|
|
vector3.y = 2;
|
|
vector3.z = data[ j - width * 2 ] - data[ j + width * 2 ];
|
|
vector3.normalize();
|
|
|
|
shade = vector3.dot( sun );
|
|
|
|
imageData[ i ] = ( 96 + shade * 128 ) * ( 0.5 + data[ j ] * 0.007 );
|
|
imageData[ i + 1 ] = ( 32 + shade * 96 ) * ( 0.5 + data[ j ] * 0.007 );
|
|
imageData[ i + 2 ] = ( shade * 96 ) * ( 0.5 + data[ j ] * 0.007 );
|
|
}
|
|
|
|
context.putImageData( image, 0, 0 );
|
|
|
|
// Scaled 4x
|
|
|
|
canvasScaled = document.createElement( 'canvas' );
|
|
canvasScaled.width = width * 4;
|
|
canvasScaled.height = height * 4;
|
|
|
|
context = canvasScaled.getContext( '2d' );
|
|
context.scale( 4, 4 );
|
|
context.drawImage( canvas, 0, 0 );
|
|
|
|
image = context.getImageData( 0, 0, canvasScaled.width, canvasScaled.height );
|
|
imageData = image.data;
|
|
|
|
for ( var i = 0, l = imageData.length; i < l; i += 4 ) {
|
|
|
|
var v = ~~ ( Math.random() * 5 );
|
|
|
|
imageData[ i ] += v;
|
|
imageData[ i + 1 ] += v;
|
|
imageData[ i + 2 ] += v;
|
|
|
|
}
|
|
|
|
context.putImageData( image, 0, 0 );
|
|
|
|
return canvasScaled;
|
|
|
|
}
|
|
|
|
//
|
|
|
|
function animate() {
|
|
|
|
requestAnimationFrame( animate );
|
|
|
|
render();
|
|
stats.update();
|
|
|
|
}
|
|
|
|
function render() {
|
|
|
|
renderer.render( scene, camera );
|
|
|
|
}
|
|
|
|
</script>
|
|
|
|
</body>
|
|
</html>
|