forked from mrdoob/three.js
-
Notifications
You must be signed in to change notification settings - Fork 0
Expand file tree
/
Copy pathwebgl_buffergeometry_lines.html
More file actions
158 lines (97 loc) · 3.33 KB
/
webgl_buffergeometry_lines.html
File metadata and controls
158 lines (97 loc) · 3.33 KB
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
148
149
150
151
152
153
154
155
156
157
158
<!DOCTYPE html>
<html lang="en">
<head>
<title>three.js webgl - buffergeometry - lines</title>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, user-scalable=no, minimum-scale=1.0, maximum-scale=1.0">
<link type="text/css" rel="stylesheet" href="main.css">
</head>
<body>
<div id="container"></div>
<div id="info"><a href="https://threejs.org" target="_blank" rel="noopener">three.js</a> webgl - buffergeometry - lines</div>
<script type="module">
import * as THREE from '../build/three.module.js';
import Stats from './jsm/libs/stats.module.js';
let container, stats, clock;
let camera, scene, renderer;
let line;
const segments = 10000;
const r = 800;
let t = 0;
init();
animate();
function init() {
container = document.getElementById( 'container' );
//
camera = new THREE.PerspectiveCamera( 27, window.innerWidth / window.innerHeight, 1, 4000 );
camera.position.z = 2750;
scene = new THREE.Scene();
clock = new THREE.Clock();
const geometry = new THREE.BufferGeometry();
const material = new THREE.LineBasicMaterial( { vertexColors: true } );
const positions = [];
const colors = [];
for ( let i = 0; i < segments; i ++ ) {
const x = Math.random() * r - r / 2;
const y = Math.random() * r - r / 2;
const z = Math.random() * r - r / 2;
// positions
positions.push( x, y, z );
// colors
colors.push( ( x / r ) + 0.5 );
colors.push( ( y / r ) + 0.5 );
colors.push( ( z / r ) + 0.5 );
}
geometry.setAttribute( 'position', new THREE.Float32BufferAttribute( positions, 3 ) );
geometry.setAttribute( 'color', new THREE.Float32BufferAttribute( colors, 3 ) );
generateMorphTargets( geometry );
geometry.computeBoundingSphere();
line = new THREE.Line( geometry, material );
scene.add( line );
//
renderer = new THREE.WebGLRenderer();
renderer.setPixelRatio( window.devicePixelRatio );
renderer.setSize( window.innerWidth, window.innerHeight );
renderer.outputEncoding = THREE.sRGBEncoding;
container.appendChild( renderer.domElement );
//
stats = new Stats();
container.appendChild( stats.dom );
//
window.addEventListener( 'resize', onWindowResize );
}
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() {
const delta = clock.getDelta();
const time = clock.getElapsedTime();
line.rotation.x = time * 0.25;
line.rotation.y = time * 0.5;
t += delta * 0.5;
line.morphTargetInfluences[ 0 ] = Math.abs( Math.sin( t ) );
renderer.render( scene, camera );
}
function generateMorphTargets( geometry ) {
const data = [];
for ( let i = 0; i < segments; i ++ ) {
const x = Math.random() * r - r / 2;
const y = Math.random() * r - r / 2;
const z = Math.random() * r - r / 2;
data.push( x, y, z );
}
const morphTarget = new THREE.Float32BufferAttribute( data, 3 );
morphTarget.name = 'target1';
geometry.morphAttributes.position = [ morphTarget ];
}
</script>
</body>
</html>