Experience results from numerical simulations by the CEREMA in 2 locations in France. Build on OpenStreetMap, IGN data and AFrame for WebXR support. https://bric-vr.com/cerema/portail/
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CEREMA/index.html

95 lines
3.5 KiB

3 years ago
<html>
<head>
<script src="https://aframe.io/releases/1.3.0/aframe.min.js"></script>
</head>
<body>
<script>
var currentGeoPose = null; // https://developer.mozilla.org/en-US/docs/Web/API/Geolocation/getCurrentPosition
navigator.geolocation.getCurrentPosition( geolocalized ) // should handle error, including being ignored
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// otherwise have 2 fallbacks via menu
var positionsCurated = [
[50.8440239,4.3952614], // brussels for tests
[1,1]
]
// should get in turn nwr(50.844,4.395,50.845,4.396); as example of scale
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// default position fallback to faciliate tests
var position = positionsCurated[0]
// initially done as a different page at first with query parameter
var forcePosition = AFRAME.utils.getUrlParameter('position');
if ( forcePosition ) position = positionsCurated[forcePosition]
// generate 3D model from the target location from OSM data
var bbox = "" + position[0]
+ "," + position[1]
+ "," + (position[0]+0.001)
+ "," + (position[1]+0.001)
var queryOSM = `https://overpass-api.de/api/interpreter?data=[out:json];nwr(${bbox});out;`
console.log( bbox )
// format https://overpass-api.de/output_formats.html#json
// bounding box https://dev.overpass-api.de/overpass-doc/en/full_data/bbox.html
// testing https://overpass-turbo.eu
fetch(queryOSM).then(response => response.json()).then(data => fromOSMTo3DElements(data) )
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// fetch flood data of target location (should be only 2 available) as timeseries
var queryCEREMA = "https://cerema.fr/api/"+position
fetch(queryCEREMA).then(response => response.json()).then(data => console.log(data) )
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// animate water based on flood data
// allow viewer to control the animation e.g restart, pause, change time
// modify environment to reflect time of day
AFRAME.registerComponent('osm', { // currently only 1 hand, the right one
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init: function () {
}
});
var globaljosm
function fromOSMTo3DElements( josm ){
globaljosm = josm
var ways = josm.elements.filter( e => (e.type == "way") )
var houses = josm.elements.filter( e => (e.type == "node" && e.tags && e.tags["addr:housenumber"]))
// does not give a polygon, might need further requests. Might also not be the right way.
addHouses( houses )
console.log( ways.length, houses.length )
}
function addHouses( houses ){
houses.map( h => {
var el = document.createElement("a-box")
el.setAttribute("position",
(((h.lat*1000)-(Math.round(h.lat*1000)))*10).toFixed(3)
+ " 0 "
+ (((h.lon*1000)-(Math.round(h.lon*1000)))*10).toFixed(3)
)
AFRAME.scenes[0].appendChild( el )
})
}
function geolocalized( pos ){
console.log( pos.coords )
}
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</script>
<a-scene osm>
<!-- Quest available only during event, otherwise cardboard -->
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<a-entity id="leftHand" hand-tracking-controls="hand: left;"></a-entity>
<a-entity id="rightHand" hand-tracking-controls="hand: right;"></a-entity>
<!-- for cardboard consider instead https://aframe.io/docs/1.3.0/components/cursor.html -->
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<a-sound src="src: url(birds.mp3)" autoplay="true" position="0 2 5"></a-sound>
<a-sound src="src: url(river.mp3)" autoplay="true" position="0 2 5"></a-sound>
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<a-box position="-0.1 1.2 -0.3" scale="0.5 0.5 0.5" rotation="0 45 0" color="#4CC3D9"></a-box>
<a-sphere position="0 1.25 -5" radius="1.25" color="#EF2D5E"></a-sphere>
<a-cylinder position="1 0.75 -3" radius="0.5" height="1.5" color="#FFC65D"></a-cylinder>
<a-plane position="0 0 -4" rotation="-90 0 0" width="4" height="4" color="#7BC8A4"></a-plane>
<a-sky color="#ECECEC"></a-sky>
</a-scene>
</body>
</html>