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scenarios.js
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scenarios.js
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Scenarios = {
scenarios: {},
fetch: function (url) {
var req = new XMLHttpRequest();
req.open("GET", url, false);
req.send(null);
Scenarios.scenarios = JSON.parse(req.responseText);
},
list: function () {
var listElem = document.getElementById("scenarios");
var template = _.template(
'<a href="javascript:Scenarios.load(\'<%= name %>\', start)"><%= name %></a><br>'
);
Object.keys(Scenarios.scenarios).forEach(function (scenarioName) {
listElem.innerHTML += template({name: scenarioName});
});
},
load: function (scenarioName, callback) {
var scenario = Scenarios.scenarios[scenarioName];
[].forEach.call(document.getElementsByClassName("load"), function (elem){
elem.style.display = "none";
});
[].forEach.call(document.getElementsByClassName("run"), function (elem){
elem.style.display = "block";
});
document.getElementById("scenarioName").innerHTML = scenarioName + "<br/><small>Loading:</small>";
var nMapsToLoad = 0;
["terrain", "water", "frictionMap"].forEach(function (map) {
var mapUrl = scenario.simulation[map];
if (mapUrl) {
nMapsToLoad++;
var xhr = new XMLHttpRequest();
xhr.open('GET', mapUrl, true);
xhr.responseType = "arraybuffer";
xhr.onload = function(){mapLoaded(map, "simulation", tiffData(this.response));};
xhr.send();
}
});
var satUrl = scenario.visualisation.satellite;
if (satUrl) {
nMapsToLoad++;
var xhr = new XMLHttpRequest();
xhr.open('GET', satUrl, true);
xhr.responseType = "blob";
xhr.onload = function () {
var satImage = new Image();
satImage.src = URL.createObjectURL(this.response);
satImage.onload = function () {mapLoaded("satellite", "visualisation", satImage);}
};
xhr.send();
}
var mapLoaded = function (name, target, data) {
scenario[target][name] = data;
console.log(name, "loaded");
if (--nMapsToLoad === 0) {
console.log(scenario);
Simulation.init(scenario.simulation);
Visualisation.init(Simulation, scenario.visualisation);
document.getElementById("scenarioName").innerHTML = scenarioName;
callback();
}
}
}
};