mirror of
https://github.com/Doodle3D/Doodle3D-Slicer.git
synced 2024-11-26 15:34:57 +01:00
223 lines
5.1 KiB
HTML
223 lines
5.1 KiB
HTML
|
<!DOCTYPE html>
|
||
|
|
<html lang="en">
|
||
|
|
<head>
|
||
|
|
<title>three.js canvas - geometry - terrain</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 {
|
||
|
|
color: #71544e;
|
||
|
|
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: #b07861;
|
||
|
|
}
|
||
|
|
|
||
|
|
</style>
|
||
|
|
</head>
|
||
|
|
<body>
|
||
|
|
|
||
|
|
<div id="container"><br /><br /><br /><br /><br />Generating...</div>
|
||
|
|
<div id="info"><a href="http://threejs.org" target="_blank">three.js</a> - terrain demo. <a href="canvas_geometry_terrain.html">generate another</a></div>
|
||
|
|
|
||
|
|
<script src="../build/three.min.js"></script>
|
||
|
|
|
||
|
|
<script src="js/renderers/Projector.js"></script>
|
||
|
|
<script src="js/renderers/CanvasRenderer.js"></script>
|
||
|
|
|
||
|
|
<script src="js/libs/stats.min.js"></script>
|
||
|
|
|
||
|
|
<script src="js/ImprovedNoise.js"></script>
|
||
|
|
|
||
|
|
<script>
|
||
|
|
|
||
|
|
var container, stats;
|
||
|
|
|
||
|
|
var camera, scene, renderer;
|
||
|
|
|
||
|
|
var mesh;
|
||
|
|
|
||
|
|
var mouseX = 0, mouseY = 0;
|
||
|
|
|
||
|
|
var windowHalfX = window.innerWidth / 2;
|
||
|
|
var windowHalfY = window.innerHeight / 2;
|
||
|
|
|
||
|
|
init();
|
||
|
|
animate();
|
||
|
|
|
||
|
|
function init() {
|
||
|
|
|
||
|
|
container = document.getElementById( 'container' );
|
||
|
|
|
||
|
|
camera = new THREE.PerspectiveCamera( 60, window.innerWidth / window.innerHeight, 1, 10000 );
|
||
|
|
camera.position.z = 500;
|
||
|
|
|
||
|
|
scene = new THREE.Scene();
|
||
|
|
|
||
|
|
var data = generateHeight( 1024, 1024 );
|
||
|
|
var texture = new THREE.Texture( generateTexture( data, 1024, 1024 ) );
|
||
|
|
texture.needsUpdate = true;
|
||
|
|
|
||
|
|
var material = new THREE.MeshBasicMaterial( { map: texture, overdraw: 0.5 } );
|
||
|
|
|
||
|
|
var quality = 16, step = 1024 / quality;
|
||
|
|
|
||
|
|
var geometry = new THREE.PlaneGeometry( 2000, 2000, quality - 1, quality - 1 );
|
||
|
|
geometry.applyMatrix( new THREE.Matrix4().makeRotationX( - Math.PI / 2 ) );
|
||
|
|
|
||
|
|
for ( var i = 0, l = geometry.vertices.length; i < l; i ++ ) {
|
||
|
|
|
||
|
|
var x = i % quality, y = Math.floor( i / quality );
|
||
|
|
geometry.vertices[ i ].y = data[ ( x * step ) + ( y * step ) * 1024 ] * 2 - 128;
|
||
|
|
|
||
|
|
}
|
||
|
|
|
||
|
|
mesh = new THREE.Mesh( geometry, material );
|
||
|
|
scene.add( mesh );
|
||
|
|
|
||
|
|
renderer = new THREE.CanvasRenderer();
|
||
|
|
renderer.setClearColor( 0xbfd1e5 );
|
||
|
|
renderer.setPixelRatio( window.devicePixelRatio );
|
||
|
|
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 );
|
||
|
|
|
||
|
|
document.addEventListener( 'mousemove', onDocumentMouseMove, false );
|
||
|
|
|
||
|
|
//
|
||
|
|
|
||
|
|
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 );
|
||
|
|
|
||
|
|
}
|
||
|
|
|
||
|
|
function generateHeight( width, height ) {
|
||
|
|
|
||
|
|
var data = new Uint8Array( width * height ), perlin = new ImprovedNoise(),
|
||
|
|
size = width * height, quality = 2, z = Math.random() * 100;
|
||
|
|
|
||
|
|
for ( var j = 0; j < 4; j ++ ) {
|
||
|
|
|
||
|
|
quality *= 4;
|
||
|
|
|
||
|
|
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 ) * 0.5 ) * quality + 10;
|
||
|
|
|
||
|
|
}
|
||
|
|
|
||
|
|
}
|
||
|
|
|
||
|
|
return data;
|
||
|
|
|
||
|
|
}
|
||
|
|
|
||
|
|
function generateTexture( data, width, height ) {
|
||
|
|
|
||
|
|
var canvas, 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, width, height );
|
||
|
|
imageData = image.data;
|
||
|
|
|
||
|
|
for ( var i = 0, j = 0, l = imageData.length; i < l; i += 4, j ++ ) {
|
||
|
|
|
||
|
|
vector3.x = data[ j - 1 ] - data[ j + 1 ];
|
||
|
|
vector3.y = 2;
|
||
|
|
vector3.z = data[ j - width ] - data[ j + width ];
|
||
|
|
vector3.normalize();
|
||
|
|
|
||
|
|
shade = vector3.dot( sun );
|
||
|
|
|
||
|
|
imageData[ i ] = ( 96 + shade * 128 ) * ( data[ j ] * 0.007 );
|
||
|
|
imageData[ i + 1 ] = ( 32 + shade * 96 ) * ( data[ j ] * 0.007 );
|
||
|
|
imageData[ i + 2 ] = ( shade * 96 ) * ( data[ j ] * 0.007 );
|
||
|
|
|
||
|
|
}
|
||
|
|
|
||
|
|
context.putImageData( image, 0, 0 );
|
||
|
|
|
||
|
|
return canvas;
|
||
|
|
|
||
|
|
}
|
||
|
|
|
||
|
|
function onDocumentMouseMove(event) {
|
||
|
|
|
||
|
|
mouseX = event.clientX - windowHalfX;
|
||
|
|
mouseY = event.clientY - windowHalfY;
|
||
|
|
|
||
|
|
}
|
||
|
|
|
||
|
|
//
|
||
|
|
|
||
|
|
function animate() {
|
||
|
|
|
||
|
|
requestAnimationFrame( animate );
|
||
|
|
|
||
|
|
render();
|
||
|
|
stats.update();
|
||
|
|
|
||
|
|
}
|
||
|
|
|
||
|
|
function render() {
|
||
|
|
|
||
|
|
camera.position.x += ( mouseX - camera.position.x ) * 0.05;
|
||
|
|
camera.position.y += ( - mouseY - camera.position.y ) * 0.05 + 15;
|
||
|
|
camera.lookAt( scene.position );
|
||
|
|
|
||
|
|
renderer.render( scene, camera );
|
||
|
|
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
</script>
|
||
|
|
|
||
|
|
</body>
|
||
|
|
</html>
|