forked from immersive-web/webxr-samples
-
Notifications
You must be signed in to change notification settings - Fork 0
/
magic-window.html
216 lines (179 loc) · 7.97 KB
/
magic-window.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
<!doctype html>
<!--
Copyright 2018 The Immersive Web Community Group
Permission is hereby granted, free of charge, to any person obtaining a copy of
this software and associated documentation files (the "Software"), to deal in
the Software without restriction, including without limitation the rights to
use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
the Software, and to permit persons to whom the Software is furnished to do so,
subject to the following conditions:
The above copyright notice and this permission notice shall be included in all
copies or substantial portions of the Software.
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
-->
<html>
<head>
<meta charset='utf-8'>
<meta name='viewport' content='width=device-width, initial-scale=1, user-scalable=no'>
<meta name='mobile-web-app-capable' content='yes'>
<meta name='apple-mobile-web-app-capable' content='yes'>
<!-- Origin Trial Token, feature = WebXR Device API, origin = https://immersive-web.github.io, expires = 2018-08-28 -->
<meta http-equiv="origin-trial" data-feature="WebXR Device API" data-expires="2018-08-28" content="AnNpu7ceXvLew05ccD8Zr1OZsdZiB2hLQKK82kTTMDwF7oRKtP3QEJ4RzkeHrmB8Sq0vSV6ZNmszpBCZ0I8p9gAAAABceyJvcmlnaW4iOiJodHRwczovL2ltbWVyc2l2ZS13ZWIuZ2l0aHViLmlvOjQ0MyIsImZlYXR1cmUiOiJXZWJYUkRldmljZSIsImV4cGlyeSI6MTUzNTQxNDQwMH0=">
<title>Magic Window</title>
<link href='css/common.css' rel='stylesheet'></link>
<!--The polyfill is not needed for browser that have native API support,
but is linked by these samples for wider compatibility.-->
<!--script src='https://cdn.jsdelivr.net/npm/webxr-polyfill@latest/build/webxr-polyfill.js'></script-->
<script src='js/webxr-polyfill.js'></script>
<!--This script patches up around implementation differences in past browser versions
so that the samples can always be written against the most recent spec changes.
It won't be necessary after the API has been officially shipped for a bit.-->
<script src='js/webxr-version-shim.js'></script>
<script src='js/cottontail/build/cottontail.js'></script>
<script src='js/webxr-button.js'></script>
</head>
<body>
<header>
<details open>
<summary>Magic Window</summary>
<p>
This sample demonstrates use of a non-immersive XRSession to present
'Magic Window' content prior to entering XR presentation with an
immersive session.
<a class="back" href="./">Back</a>
</p>
</details>
</header>
<script>
(function () {
'use strict';
// If requested, initialize the WebXR polyfill
if (QueryArgs.getBool('allowPolyfill', false)) {
var polyfill = new WebXRPolyfill();
}
// Apply the version shim after the polyfill is instantiated, to ensure
// that the polyfill also gets patched if necessary.
var versionShim = new WebXRVersionShim();
// Shh! Nothing to see here, move along.
let arMode = QueryArgs.getBool('arMode', false);
// XR globals.
let xrButton = null;
let xrImmersiveFrameOfRef = null;
let xrNonImmersiveFrameOfRef = null;
// WebGL scene globals.
let gl = null;
let renderer = null;
let scene = new Scene();
let solarSystem = new Gltf2Node({url: 'media/gltf/space/space.gltf'});
scene.addNode(solarSystem);
if (arMode) {
solarSystem.scale = [0.2, 0.2, 0.2];
} else {
scene.addNode(new SkyboxNode({url: 'media/textures/milky-way-4k.png'}));
}
function initXR() {
xrButton = new XRDeviceButton({
onRequestSession: onRequestSession,
onEndSession: onEndSession
});
document.querySelector('header').appendChild(xrButton.domElement);
if (navigator.xr) {
navigator.xr.requestDevice().then((device) => {
device.supportsSession({immersive: true}).then(() => {
xrButton.setDevice(device);
});
// In order for a non-immersive session to be used we must provide
// an outputContext, which indicates the canvas that will contain
// results of the session's rendering.
let outputCanvas = document.createElement('canvas');
let ctx = outputCanvas.getContext('xrpresent');
// Pick an arbitrary device for the magic window content and start
// up a non-immersive session if possible.
device.requestSession({outputContext: ctx})
.then((session) => {
// Add the canvas to the document once we know that it will be
// rendered to.
document.body.appendChild(outputCanvas);
onSessionStarted(session);
});
});
}
}
function onRequestSession(device) {
// Set up a mirror canvas
let mirrorCanvas = document.createElement('canvas');
let ctx = mirrorCanvas.getContext('xrpresent');
mirrorCanvas.setAttribute('id', 'mirror-canvas');
document.body.appendChild(mirrorCanvas);
device.requestSession({immersive: true, outputContext: ctx}).then((session) => {
xrButton.setSession(session);
onSessionStarted(session);
});
}
function onSessionStarted(session) {
session.addEventListener('end', onSessionEnded);
if (!gl) {
gl = createWebGLContext({
compatibleXRDevice: session.device
});
renderer = new Renderer(gl);
scene.setRenderer(renderer);
}
session.baseLayer = new XRWebGLLayer(session, gl);
session.requestFrameOfReference('eye-level').then((frameOfRef) => {
// Since we're dealing with multple sessions now we need to track
// which XRFrameOfReference is associated with which XRSession.
if (session.immersive) {
xrImmersiveFrameOfRef = frameOfRef;
} else {
xrNonImmersiveFrameOfRef = frameOfRef;
}
session.requestAnimationFrame(onXRFrame);
});
}
function onEndSession(session) {
session.end();
}
function onSessionEnded(event) {
// Only reset the button when the immersive session ends.
if (event.session.immersive) {
// Remove the mirroring canvas.
document.body.removeChild(document.querySelector('#mirror-canvas'));
xrButton.setSession(null);
}
}
// Called every time a XRSession requests that a new frame be drawn.
function onXRFrame(t, frame) {
let session = frame.session;
// Ensure that we're using the right frame of reference for the session.
let frameOfRef = session.immersive ?
xrImmersiveFrameOfRef :
xrNonImmersiveFrameOfRef;
let pose = frame.getDevicePose(frameOfRef);
scene.startFrame();
session.requestAnimationFrame(onXRFrame);
if (pose) {
gl.bindFramebuffer(gl.FRAMEBUFFER, session.baseLayer.framebuffer);
if (!arMode) {
gl.clear(gl.COLOR_BUFFER_BIT | gl.DEPTH_BUFFER_BIT);
}
for (let view of frame.views) {
let viewport = session.baseLayer.getViewport(view);
gl.viewport(viewport.x, viewport.y,
viewport.width, viewport.height);
scene.draw(view.projectionMatrix, pose.getViewMatrix(view));
}
}
scene.endFrame();
}
// Start the XR application.
initXR();
})();
</script>
</body>
</html>