提交 2cd12340 编写于 作者: M Mr.doob

- Added codecs metadata on video demo.

- Added terrain demo.
上级 3755d003
......@@ -17,6 +17,7 @@ Similar projects: [pre3d](http://deanm.github.com/pre3d/), [pvjs](http://code.go
### Examples ###
[![geometry_terrain](http://github.com/mrdoob/three.js/raw/master/assets/examples/06_terrain.png)](http://mrdoob.com/projects/three.js/examples/geometry_terrain.html)
[![materials_video](http://github.com/mrdoob/three.js/raw/master/assets/examples/05_video.png)](http://mrdoob.com/projects/three.js/examples/materials_video.html)
[![geometry_vr](http://github.com/mrdoob/three.js/raw/master/assets/examples/04_vr.png)](http://mrdoob.com/projects/three.js/examples/geometry_vr.html)
[![geometry_cube](http://github.com/mrdoob/three.js/raw/master/assets/examples/03_cube.png)](http://mrdoob.com/projects/three.js/examples/geometry_cube.html)
......@@ -30,7 +31,7 @@ Similar projects: [pre3d](http://deanm.github.com/pre3d/), [pvjs](http://code.go
[![jsflowfield4d](http://github.com/mrdoob/three.js/raw/master/assets/projects/00_jsflowfield4d.png)](http://test.sjeiti.com/jsflowfield4d/)
[![spikeball](http://github.com/mrdoob/three.js/raw/master/assets/projects/03_spikeball.png)](http://kile.stravaganza.org/lab/js/spikeball/)
### How to use ###
### Usage ###
The library needs to be included first thing.
......
<!DOCTYPE HTML>
<html lang="en">
<head>
<title>three.js - geometry - terrain</title>
<meta charset="utf-8">
<style type="text/css">
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://github.com/mrdoob/three.js" target="_blank">three.js</a> - terrain demo.</div>
<script type="text/javascript" src="http://github.com/mrdoob/stats.js/raw/master/build/stats.js"></script>
<script type="text/javascript" src="../build/three.js"></script>
<script type="text/javascript" src="primitives/Plane.js"></script>
<script type="text/javascript">
var Perlin = function () {
// http://mrl.nyu.edu/~perlin/noise/
var p = [151,160,137,91,90,15,131,13,201,95,96,53,194,233,7,225,140,36,103,30,69,142,8,99,37,240,21,10,
23,190,6,148,247,120,234,75,0,26,197,62,94,252,219,203,117,35,11,32,57,177,33,88,237,149,56,87,
174,20,125,136,171,168,68,175,74,165,71,134,139,48,27,166,77,146,158,231,83,111,229,122,60,211,
133,230,220,105,92,41,55,46,245,40,244,102,143,54,65,25,63,161,1,216,80,73,209,76,132,187,208,
89,18,169,200,196,135,130,116,188,159,86,164,100,109,198,173,186,3,64,52,217,226,250,124,123,5,
202,38,147,118,126,255,82,85,212,207,206,59,227,47,16,58,17,182,189,28,42,223,183,170,213,119,
248,152,2,44,154,163,70,221,153,101,155,167,43,172,9,129,22,39,253,19,98,108,110,79,113,224,232,
178,185,112,104,218,246,97,228,251,34,242,193,238,210,144,12,191,179,162,241,81,51,145,235,249,
14,239,107,49,192,214,31,181,199,106,157,184,84,204,176,115,121,50,45,127,4,150,254,138,236,205,
93,222,114,67,29,24,72,243,141,128,195,78,66,215,61,156,180];
for (var i=0; i < 256 ; i++) {
p[256+i] = p[i];
}
function fade(t) {
return t * t * t * (t * (t * 6 - 15) + 10);
}
function lerp(t, a, b) {
return a + t * (b - a);
}
function grad(hash, x, y, z) {
var h = hash & 15;
var u = h < 8 ? x : y, v = h < 4 ? y : h == 12 || h == 14 ? x : z;
return ((h&1) == 0 ? u : -u) + ((h&2) == 0 ? v : -v);
}
return {
noise: function (x, y, z) {
var floorX = Math.floor(x), floorY = Math.floor(y), floorZ = Math.floor(z);
var X = floorX & 255, Y = floorY & 255, Z = floorZ & 255;
x -= floorX;
y -= floorY;
z -= floorZ;
var xMinus1 = x -1, yMinus1 = y - 1, zMinus1 = z - 1;
var u = fade(x), v = fade(y), w = fade(z);
var A = p[X]+Y, AA = p[A]+Z, AB = p[A+1]+Z, B = p[X+1]+Y, BA = p[B]+Z, BB = p[B+1]+Z;
return lerp(w, lerp(v, lerp(u, grad(p[AA], x, y, z),
grad(p[BA], xMinus1, y, z)),
lerp(u, grad(p[AB], x, yMinus1, z),
grad(p[BB], xMinus1, yMinus1, z))),
lerp(v, lerp(u, grad(p[AA+1], x, y, zMinus1),
grad(p[BA+1], xMinus1, y, z-1)),
lerp(u, grad(p[AB+1], x, yMinus1, zMinus1),
grad(p[BB+1], xMinus1, yMinus1, zMinus1))));
}
}
}
//
var SCREEN_WIDTH = window.innerWidth, SCREEN_HEIGHT = window.innerHeight;
var container, stats;
var camera, scene, renderer;
var mesh;
var mouseX = 0;
var mouseY = 0;
var windowHalfX = window.innerWidth >> 1;
var windowHalfY = window.innerHeight >> 1;
init();
setInterval( loop, 1000 / 60 );
function init() {
container = document.getElementById( 'container' );
camera = new THREE.Camera(0, 0, 500);
camera.focus = 300;
scene = new THREE.Scene();
var heightMap = height( 1024, 1024 );
var textureMap = shadow( heightMap );
var material = new THREE.BitmapUVMappingMaterial( textureMap );
var quality = 20;
var quality1 = quality + 1;
var plane = new Plane( 2000, 2000, quality, quality );
var data = heightMap.getContext( '2d' ).getImageData( 0, 0, heightMap.width, heightMap.height ).data;
var pixelsPerTriangle = Math.floor(heightMap.width / quality1);
for ( var y = 0; y < quality1; y++ ) {
for (var x = 0; x < quality1; x++ ) {
plane.vertices[x + y * quality1].position.z = data[((x * pixelsPerTriangle) + (y * pixelsPerTriangle) * heightMap.width) * 4];
}
}
mesh = new THREE.Mesh( plane, material );
mesh.rotation.x = -90 * Math.PI / 180;
scene.add(mesh);
renderer = new THREE.CanvasRenderer();
renderer.setSize(SCREEN_WIDTH, SCREEN_HEIGHT);
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);
}
function onDocumentMouseMove(event) {
mouseX = (event.clientX - windowHalfX);
mouseY = (event.clientY - windowHalfY);
}
function loop() {
camera.position.x += (mouseX - camera.position.x) * .05;
camera.position.y += (-mouseY - camera.position.y) * .05;
renderer.render(scene, camera);
stats.update();
}
function height(width, height) {
var canvas, context, image, data;
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 );
data = image.data;
var perlin = new Perlin();
var size = width * height;
var quality = 2;
var zz = Math.random() * 100;
for ( var j = 0; j < 4; j ++ ) {
var x = 0, y = 0, yy = 0;
quality *= 4;
for ( var i = 0; i < size; i ++ ) {
data[ i * 4 ] += Math.floor( perlin.noise( x / quality, yy, zz ) * quality + 10 );
x++;
if (x == width)
{
x = 0;
y ++;
yy = y / quality;
}
}
}
context.putImageData( image, 0, 0 );
return canvas;
}
function shadow( texture ) {
var canvas, context, image, data, src_data,
index, level, diff, width = texture.width, height = texture.height;
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 );
data = image.data;
src_data = texture.getContext( '2d' ).getImageData( 0, 0, width, height ).data;
for ( var y = 0; y < height; y++ ) {
for ( var x = 0; x < width; x++ ) {
index = ( x + y * width ) * 4;
diff = 0;
level = width / 4;
while ( level > 4 ) {
diff += ( ( src_data[ index - level ] >>> 0 ) - ( src_data[ index + level ] >>> 0 ) ) +
( ( src_data[ index - ( width * level ) ] >>> 0 ) - ( src_data[ index + ( width * level ) ] >>> 0 ) ) + 32;
level /= 2;
}
data[ index ] = diff * 0.45;
data[ index + 1 ] = diff * 0.29;
data[ index + 2 ] = diff * 0.19;
}
}
context.putImageData( image, 0, 0 );
return canvas;
}
</script>
</body>
</html>
......@@ -15,15 +15,14 @@
</head>
<body>
<script type="text/javascript" src="http://github.com/mrdoob/stats.js/raw/master/build/stats.js"></script>
<script type="text/javascript" src="../build/three.js"></script>
<script type="text/javascript" src="primitives/Plane.js"></script>
<script type="text/javascript" src="http://github.com/mrdoob/stats.js/raw/master/build/stats.js"></script>
<video id="video" autoplay="true" style="display:none">
<source src="textures/sintel.mp4" type="video/mp4">
<source src="textures/sintel.ogv" type="video/ogg">
<video id="video" autoplay style="display:none">
<source src="textures/sintel.mp4" type='video/mp4; codecs="avc1.42E01E, mp4a.40.2"'>
<source src="textures/sintel.ogv" type='video/ogg; codecs="theora, vorbis"'>
</video>
<script type="text/javascript">
......@@ -159,7 +158,10 @@
camera.position.x += (mouseX - camera.position.x) * .05;
camera.position.y += (-mouseY - camera.position.y) * .05;
textureContext.drawImage( video, 0, 0 );
if (video.readyState === video.HAVE_ENOUGH_DATA) {
textureContext.drawImage( video, 0, 0 );
}
textureReflectionContext.drawImage( texture, 0, 0 );
textureReflectionContext.fillStyle = textureReflectionGradient;
......
......@@ -18,7 +18,7 @@ var Plane = function ( width, height, segments_width, segments_height ) {
segment_height = height / gridY;
for(var iy = 0; iy < gridY1; iy++) {
for( var iy = 0; iy < gridY1; iy++ ) {
for( var ix = 0; ix < gridX1; ix++ ) {
......@@ -31,7 +31,7 @@ var Plane = function ( width, height, segments_width, segments_height ) {
}
for( iy = 0; iy < gridY; iy++ ) {
for( iy = 0; iy < gridY; iy++ ) {
for( ix = 0; ix < gridX; ix++ ) {
......
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