forked from mrdoob/three.js
-
Notifications
You must be signed in to change notification settings - Fork 0
/
canvas_performance.html
147 lines (93 loc) · 3.25 KB
/
canvas_performance.html
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
<!DOCTYPE html>
<html lang="en">
<head>
<title>three.js canvas - performance</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 {
font-family: Monospace;
background-color: #f0f0f0;
margin: 0px;
overflow: hidden;
}
</style>
</head>
<body>
<script src="../build/three.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>
var container, stats;
var camera, scene, renderer;
var light;
init();
animate();
function init() {
container = document.createElement( 'div' );
document.body.appendChild( container );
scene = new THREE.Scene();
camera = new THREE.PerspectiveCamera( 45, window.innerWidth / window.innerHeight, 1, 10000 );
camera.position.set( 0, 1000, 1000 );
camera.lookAt( scene.position );
// Grid
var size = 500, step = 100;
var geometry = new THREE.Geometry();
for ( var i = - size; i <= size; i += step ) {
geometry.vertices.push( new THREE.Vector3( - size, 0, i ) );
geometry.vertices.push( new THREE.Vector3( size, 0, i ) );
geometry.vertices.push( new THREE.Vector3( i, 0, - size ) );
geometry.vertices.push( new THREE.Vector3( i, 0, size ) );
}
var material = new THREE.LineBasicMaterial( { color: 0x000000, opacity: 0.5 } );
var line = new THREE.LineSegments( geometry, material );
scene.add( line );
// Spheres
geometry = new THREE.SphereGeometry( 100, 26, 18 );
material = new THREE.MeshLambertMaterial( { color: 0xffffff, overdraw: 0.5 } );
for ( var i = 0; i < 20; i ++ ) {
var sphere = new THREE.Mesh( geometry, material );
sphere.position.x = ( i % 5 ) * 200 - 400;
sphere.position.z = Math.floor( i / 5 ) * 200 - 400;
scene.add( sphere );
}
// Lights
var ambientLight = new THREE.AmbientLight( Math.random() * 0x202020 );
scene.add( ambientLight );
var directionalLight = new THREE.DirectionalLight( Math.random() * 0xffffff );
directionalLight.position.set( 0, 1, 0 );
scene.add( directionalLight );
light = new THREE.PointLight( 0xff0000, 1, 500 );
scene.add( light );
renderer = new THREE.CanvasRenderer();
renderer.setClearColor( 0xf0f0f0 );
renderer.setPixelRatio( window.devicePixelRatio );
renderer.setSize( window.innerWidth, window.innerHeight );
container.appendChild( renderer.domElement );
stats = new Stats();
container.appendChild(stats.dom);
//
window.addEventListener( 'resize', onWindowResize, false );
}
function onWindowResize() {
camera.aspect = window.innerWidth / window.innerHeight;
camera.updateProjectionMatrix();
renderer.setSize( window.innerWidth, window.innerHeight );
}
//
function animate() {
requestAnimationFrame( animate );
render();
stats.update();
}
function render() {
var timer = Date.now() * 0.001;
light.position.x = Math.cos( timer ) * 1000;
light.position.y = 500;
light.position.z = Math.sin( timer ) * 1000;
renderer.render( scene, camera );
}
</script>
</body>
</html>