-
Notifications
You must be signed in to change notification settings - Fork 333
/
parabolic-path-2.html
252 lines (204 loc) · 6.72 KB
/
parabolic-path-2.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
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
<!DOCTYPE html>
<head>
<meta name="viewport" content="width=device-width, user-scalable=no, minimum-scale=1.0, maximum-scale=1.0">
<title>Hello, world!</title>
<!-- include three.js library -->
<script src='js/three.js'></script>
<!-- include jsartookit -->
<script src="jsartoolkit5/artoolkit.min.js"></script>
<script src="jsartoolkit5/artoolkit.api.js"></script>
<!-- include threex.artoolkit -->
<script src="threex/threex-artoolkitsource.js"></script>
<script src="threex/threex-artoolkitcontext.js"></script>
<script src="threex/threex-arbasecontrols.js"></script>
<script src="threex/threex-armarkercontrols.js"></script>
</head>
<body style='margin : 0px; overflow: hidden; font-family: Monospace;'>
<!--
Example created by Lee Stemkoski: https://github.com/stemkoski
Based on the AR.js library and examples created by Jerome Etienne: https://github.com/jeromeetienne/AR.js/
-->
<script>
var scene, camera, renderer, clock, deltaTime, totalTime;
var arToolkitSource, arToolkitContext;
var markerRoot1;
var material1, mesh1;
var ballMeshArray = [];
initialize();
animate();
function initialize()
{
scene = new THREE.Scene();
camera = new THREE.Camera();
scene.add(camera);
renderer = new THREE.WebGLRenderer({
antialias : true,
alpha: true
});
renderer.setClearColor(new THREE.Color('lightgrey'), 0)
renderer.setSize( 640, 480 );
renderer.domElement.style.position = 'absolute'
renderer.domElement.style.top = '0px'
renderer.domElement.style.left = '0px'
document.body.appendChild( renderer.domElement );
clock = new THREE.Clock();
deltaTime = 0;
totalTime = 0;
////////////////////////////////////////////////////////////
// setup arToolkitSource
////////////////////////////////////////////////////////////
arToolkitSource = new THREEx.ArToolkitSource({
sourceType : 'webcam',
});
function onResize()
{
arToolkitSource.onResize()
arToolkitSource.copySizeTo(renderer.domElement)
if ( arToolkitContext.arController !== null )
{
arToolkitSource.copySizeTo(arToolkitContext.arController.canvas)
}
}
arToolkitSource.init(function onReady(){
onResize()
});
// handle resize event
window.addEventListener('resize', function(){
onResize()
});
////////////////////////////////////////////////////////////
// setup arToolkitContext
////////////////////////////////////////////////////////////
// create atToolkitContext
arToolkitContext = new THREEx.ArToolkitContext({
cameraParametersUrl: 'data/camera_para.dat',
detectionMode: 'mono'
});
// copy projection matrix to camera when initialization complete
arToolkitContext.init( function onCompleted(){
camera.projectionMatrix.copy( arToolkitContext.getProjectionMatrix() );
});
////////////////////////////////////////////////////////////
// setup markerRoots
////////////////////////////////////////////////////////////
// build markerControls
markerRootA = new THREE.Group();
scene.add(markerRootA);
let markerControls1 = new THREEx.ArMarkerControls(arToolkitContext, markerRootA, {
type: 'pattern', patternUrl: "data/letterA.patt",
});
markerRootB = new THREE.Group();
scene.add(markerRootB);
let markerControls2 = new THREEx.ArMarkerControls(arToolkitContext, markerRootB, {
type: 'pattern', patternUrl: "data/letterB.patt",
});
////////////////////////////////////////////////////////////
// setup scene
////////////////////////////////////////////////////////////
renderer.shadowMap.enabled = true;
renderer.shadowMap.type = THREE.PCFSoftShadowMap;
let loader = new THREE.TextureLoader();
sceneGroup = new THREE.Group();
markerRootA.add(sceneGroup);
let floorGeometry = new THREE.PlaneGeometry( 20,20 );
let floorMaterial = new THREE.ShadowMaterial();
floorMaterial.opacity = 0.3;
let floorMesh = new THREE.Mesh( floorGeometry, floorMaterial );
floorMesh.rotation.x = -Math.PI/2;
floorMesh.receiveShadow = true;
sceneGroup.add( floorMesh );
// ballMeshArray
var colors = [0xFF0000, 0xFF8800, 0xFFFF00, 0x00CC00, 0x0000FF, 0x8800FF];
for (let i = 0; i < 6; i++)
{
let ballMesh = new THREE.Mesh(
new THREE.SphereGeometry(0.25, 32, 32),
new THREE.MeshLambertMaterial({
map: loader.load("images/basketball-gray.png"),
color: colors[i]
})
);
ballMesh.castShadow = true;
scene.add( ballMesh );
ballMeshArray.push(ballMesh);
}
let light = new THREE.PointLight( 0xffffff, 1, 100 );
light.position.set( 0,4,0 ); // default; light shining from top
light.castShadow = true;
sceneGroup.add( light );
let lightSphere = new THREE.Mesh(
new THREE.SphereGeometry(0.1),
new THREE.MeshBasicMaterial({
color: 0xffffff,
transparent: true,
opacity: 0.8
})
);
lightSphere.position.copy( light.position );
sceneGroup.add( lightSphere );
let ambientLight = new THREE.AmbientLight( 0x666666 );
sceneGroup.add( ambientLight );
// let helper = new THREE.CameraHelper( light.shadow.camera );
// sceneGroup.add( helper );
// default normal of a plane is 0,0,1. Apply mesh rotation to it.
let clipPlane = new THREE.Plane().setFromNormalAndCoplanarPoint(
new THREE.Vector3(0,1,0), new THREE.Vector3(0,0,0) );
renderer.clippingPlanes = [clipPlane];
}
function update()
{
// update artoolkit on every frame
if ( arToolkitSource.ready !== false )
arToolkitContext.update( arToolkitSource.domElement );
if ( markerRootA.visible && markerRootB.visible )
{
// align clipping plane to scene.
renderer.clippingPlanes[0].setFromNormalAndCoplanarPoint(
new THREE.Vector3(0,1,0).applyQuaternion(sceneGroup.getWorldQuaternion()),
sceneGroup.getWorldPosition()
);
for (let i = 0; i < 6; i++)
{
console.log(i)
console.log(totalTime)
let p = parabolicPath(
markerRootA.getWorldPosition(),
markerRootB.getWorldPosition(),
(totalTime - i*Math.PI/3 ) % 6.283 );
console.log(p);
let ballMesh = ballMeshArray[i];
ballMesh.position.copy( p );
ballMesh.rotation.z += 0.1
}
}
}
// create a function p() that passes through the points (0,p0), (1,p1), (2,p2)
// and evaluate that function at time t.
function parabolaEvaluate(p0, p1, p2, t)
{
return ( 0.5*(p0 - 2*p1 + p2) )*t*t + ( -0.5*(3*p0 - 4*p1 + p2) )*t + ( p0 );
}
function parabolicPath( pointStart, pointEnd, time )
{
let pointMiddle = new THREE.Vector3().addVectors( pointStart, pointEnd ).multiplyScalar(0.5).add( new THREE.Vector3(0,2,0) );
return new THREE.Vector3(
parabolaEvaluate( pointStart.x, pointMiddle.x, pointEnd.x, time ),
parabolaEvaluate( pointStart.y, pointMiddle.y, pointEnd.y, time ),
parabolaEvaluate( pointStart.z, pointMiddle.z, pointEnd.z, time )
);
}
function render()
{
renderer.render( scene, camera );
}
function animate()
{
requestAnimationFrame(animate);
deltaTime = clock.getDelta();
totalTime += deltaTime;
update();
render();
}
</script>
</body>
</html>