forked from mrdoob/three.js
-
Notifications
You must be signed in to change notification settings - Fork 1
/
Copy pathwebgl_modifier_edgesplit.html
202 lines (133 loc) · 4.94 KB
/
webgl_modifier_edgesplit.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
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
<!DOCTYPE html>
<html lang="en">
<head>
<title>three.js webgl - modifier - Edge Split modifier</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>
<!-- Import maps polyfill -->
<!-- Remove this when import maps will be widely supported -->
<script async src="https://unpkg.com/[email protected]/dist/es-module-shims.js"></script>
<script type="importmap">
{
"imports": {
"three": "../build/three.module.js",
"three/addons/": "./jsm/"
}
}
</script>
<script type="module">
import * as THREE from 'three';
import { OrbitControls } from 'three/addons/controls/OrbitControls.js';
import { OBJLoader } from 'three/addons/loaders/OBJLoader.js';
import { EdgeSplitModifier } from 'three/addons/modifiers/EdgeSplitModifier.js';
import * as BufferGeometryUtils from 'three/addons/utils/BufferGeometryUtils.js';
import { GUI } from 'three/addons/libs/lil-gui.module.min.js';
let renderer, scene, camera;
let modifier, mesh, baseGeometry;
let map;
const params = {
smoothShading: true,
edgeSplit: true,
cutOffAngle: 20,
showMap: false,
tryKeepNormals: true,
};
init();
function init() {
const info = document.createElement( 'div' );
info.style.position = 'absolute';
info.style.top = '10px';
info.style.width = '100%';
info.style.textAlign = 'center';
info.innerHTML = '<a href="https://threejs.org" target="_blank" rel="noopener">three.js</a> - Edge Split modifier';
document.body.appendChild( info );
renderer = new THREE.WebGLRenderer( { antialias: true } );
renderer.setPixelRatio( window.devicePixelRatio );
renderer.setSize( window.innerWidth, window.innerHeight );
document.body.appendChild( renderer.domElement );
scene = new THREE.Scene();
camera = new THREE.PerspectiveCamera( 75, window.innerWidth / window.innerHeight );
const controls = new OrbitControls( camera, renderer.domElement );
controls.addEventListener( 'change', render ); // use if there is no animation loop
controls.enableDamping = true;
controls.dampingFactor = 0.25;
controls.rotateSpeed = 0.35;
controls.minZoom = 1;
camera.position.set( 0, 0, 4 );
scene.add( new THREE.HemisphereLight( 0xffffff, 0x444444 ) );
new OBJLoader().load(
'./models/obj/cerberus/Cerberus.obj',
function ( group ) {
const cerberus = group.children[ 0 ];
const modelGeometry = cerberus.geometry;
modifier = new EdgeSplitModifier();
baseGeometry = BufferGeometryUtils.mergeVertices( modelGeometry );
mesh = new THREE.Mesh( getGeometry(), new THREE.MeshStandardMaterial() );
mesh.material.flatShading = ! params.smoothShading;
mesh.rotateY( - Math.PI / 2 );
mesh.scale.set( 3.5, 3.5, 3.5 );
mesh.translateZ( 1.5 );
scene.add( mesh );
if ( map !== undefined && params.showMap ) {
mesh.material.map = map;
mesh.material.needsUpdate = true;
}
render();
}
);
window.addEventListener( 'resize', onWindowResize );
new THREE.TextureLoader().load( './models/obj/cerberus/Cerberus_A.jpg', function ( texture ) {
map = texture;
if ( mesh !== undefined && params.showMap ) {
mesh.material.map = map;
mesh.material.needsUpdate = true;
}
} );
const gui = new GUI( { name: 'Edge split modifier parameters' } );
gui.add( params, 'showMap' ).onFinishChange( updateMesh );
gui.add( params, 'smoothShading' ).onFinishChange( updateMesh );
gui.add( params, 'edgeSplit' ).onFinishChange( updateMesh );
gui.add( params, 'cutOffAngle' ).min( 0 ).max( 180 ).onFinishChange( updateMesh );
gui.add( params, 'tryKeepNormals' ).onFinishChange( updateMesh );
}
function onWindowResize() {
renderer.setSize( window.innerWidth, window.innerHeight );
camera.aspect = window.innerWidth / window.innerHeight;
camera.updateProjectionMatrix();
render();
}
function getGeometry() {
let geometry;
if ( params.edgeSplit ) {
geometry = modifier.modify(
baseGeometry,
params.cutOffAngle * Math.PI / 180,
params.tryKeepNormals
);
} else {
geometry = baseGeometry;
}
return geometry;
}
function updateMesh() {
if ( mesh !== undefined ) {
mesh.geometry = getGeometry();
let needsUpdate = mesh.material.flatShading === params.smoothShading;
mesh.material.flatShading = params.smoothShading === false;
if ( map !== undefined ) {
needsUpdate = needsUpdate || mesh.material.map !== ( params.showMap ? map : null );
mesh.material.map = params.showMap ? map : null;
}
mesh.material.needsUpdate = needsUpdate;
render();
}
}
function render() {
renderer.render( scene, camera );
}
</script>
</body>
</html>