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room-scale.html
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room-scale.html
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<!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'>
<meta http-equiv="Cache-Control" content="no-cache, no-store, must-revalidate">
<meta http-equiv="Pragma" content="no-cache">
<meta http-equiv="Expires" content="0">
<title>Room Scale</title>
<link href='css/common.css' rel='stylesheet'></link>
<script src='js/cottontail/build/cottontail.debug.js'></script>
<script src='js/webxr-button.js'></script>
</head>
<body>
<header>
<details open>
<summary>Room Scale</summary>
<p>
This sample demonstrates using a 'stage' frame of reference to provide
room scale tracking. If stage bounds are provided by the XRDevice, they
will be represented as a green ground plane.
<a class="back" href="./">Back</a>
</p>
</summary>
</header>
<script>
(function () {
'use strict';
// XR globals.
let xrButton = null;
let xrExclusiveFrameOfRef_stage = null;
let xrExclusiveFrameOfRef_headModel = null;
// WebGL scene globals.
let gl = null;
let renderer = null;
let scene = new Scene();
scene.addNode(new Gltf2Node({url: 'media/gltf/camp/camp.gltf'}));
//scene.addNode(new SkyboxNode({url: 'media/textures/eilenriede-park-2k.png'}));
scene.standingStats(true);
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({exclusive: true}).then(() => {
xrButton.setDevice(device);
});
}).catch(() => {
initFallback();
});
} else {
initFallback();
}
}
function initFallback() {
initGL();
document.body.appendChild(gl.canvas);
let fallbackHelper = new FallbackHelper(scene, gl);
fallbackHelper.emulateStage = true;
}
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({ exclusive: true }).then((session) => {
xrButton.setSession(session);
onSessionStarted(session);
});
}
function initGL(compatibleDevice) {
if (gl)
return;
gl = createWebGLContext({
compatibleXRDevice: compatibleDevice
});
renderer = new Renderer(gl);
scene.setRenderer(renderer);
}
function onSessionStarted(session) {
session.addEventListener('end', onSessionEnded);
initGL(session.device);
session.baseLayer = new XRWebGLLayer(session, gl);
// Get a stage frame of reference, which will align the user's physical
// floor with Y=0 and can provide boundaries that indicate where the
// user can safely walk. If the system can't natively provide stage
// coordinates (for example, with a 3DoF device) then it will return an
// emulated stage, where the view is translated up by a static height so
// that the scene still renders in approximately the right place.
session.requestFrameOfReference('stage').then((frameOfRef) => {
if (session.exclusive) {
xrExclusiveFrameOfRef_stage = frameOfRef;
let boundsRenderer = new BoundsRenderer();
//scene.addNode(boundsRenderer);
//boundsRenderer.stageBounds = frameOfRef.bounds;
}
session.requestAnimationFrame(onXRFrame);
});
session.requestFrameOfReference('headModel').then((frameOfRef) => {
if (session.exclusive) {
xrExclusiveFrameOfRef_headModel = frameOfRef;
}
});
}
function onEndSession(session) {
session.end();
}
function onSessionEnded(event) {
if (event.session.exclusive) {
document.body.removeChild(document.querySelector('#mirror-canvas'));
xrButton.setSession(null);
}
}
function onXRFrame(t, frame) {
let session = frame.session;
let pose = frame.getDevicePose(xrExclusiveFrameOfRef_stage);
if (pose == null)
{
pose = frame.getDevicePose(xrExclusiveFrameOfRef_headModel);
}
scene.startFrame();
session.requestAnimationFrame(onXRFrame);
// Every XR frame uses basically the same render loop, so for the sake
// of keeping the sample code focused on the interesting bits most
// samples after this one will start using this helper function to hide
// away the majority of the rendering logic.
scene.drawXRFrame(frame, pose);
scene.endFrame();
}
// Start the XR application.
initXR();
})();
</script>
</body>
</html>