691 wiersze
23 KiB
JavaScript
691 wiersze
23 KiB
JavaScript
/*
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* CUSF Landing Prediction Version 2
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* Jon Sowman 2010
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* jon@hexoc.com
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* http://www.hexoc.com
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*
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* http://github.com/jonsowman/cusf-standalone-predictor
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*
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*/
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$(document).ready(function() {
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// are we trying to display an old prediction?
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if(window.location.hash != "") {
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var ln = window.location.hash.split("=");
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var posteq = ln[1];
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if ( posteq.length != 40 ) {
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throwError("The supplied hashstring was not a valid UUID.");
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appendDebug("The hashstring was not the expected length");
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} else {
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current_uuid = posteq;
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}
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}
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initMap(52, 0, 8);
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populateLaunchSite();
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setupEventHandlers();
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// make launch card draggable
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$("#input_form").draggable({containment: '#map_canvas', handle: 'img.handle', snap: '#map_canvas'});
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$("#scenario_info").draggable({containment: '#map_canvas', handle: 'img.handle', snap: '#map_canvas'});
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$("#run_pred_btn").button();
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$("#req_sub_btn").button();
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// see if we want an old prediction displayed
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if ( current_uuid != '0' ) {
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appendDebug("Got an old UUID to plot:<br>" + current_uuid);
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appendDebug("Trying to populate form with scenario data...");
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populateFormByUUID(current_uuid);
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appendDebug("Trying to get flight path from server...");
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getCSV(current_uuid);
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}
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// plot the initial launch location
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plotClick();
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});
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function predSub() {
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appendDebug(null, 1); // clear debug window
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appendDebug("Sending data to server...");
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// initialise progress bar
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$("#prediction_progress").progressbar({ value: 0 });
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$("#prediction_status").html("Sending data to server...");
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$("#status_message").fadeIn(250);
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}
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function populateFormByUUID(pred_uuid) {
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$.get("ajax.php", { "action":"getModelByUUID", "uuid":pred_uuid }, function(data) {
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if ( !data.valid ) {
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appendDebug("Populating form by UUID failed");
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appendDebug("The server said the model it made was invalid");
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} else {
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// we're good to go, populate the form
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$("#lat").val(data.latitude);
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$("#lon").val(data.longitude);
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$("#initial_alt").val(data.altitude);
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$("#hour").val(data.hour);
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// we need to make minutes be "04" instead of "4"
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var scenario_minute = data.minute;
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if ( scenario_minute < 10 ) scenario_minute = "0" + scenario_minute;
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$("#min").val(scenario_minute);
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$("#second").val(data.second);
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$("#day").val(data.day);
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$("#month").attr("selectedIndex", data.month-1);
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$("#year").val(data.year);
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// we have to use [] notation for
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// values that have -s in them
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$("#ascent").val(data['ascent-rate']);
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$("#drag").val(data['descent-rate']);
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$("#burst").val(data['burst-altitude']);
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$("#software").val(data.software);
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$("#delta_lat").val(data['lat-delta']);
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$("#delta_lon").val(data['lon-delta']);
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// now sort the map out
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SetSiteOther();
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plotClick();
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}
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}, 'json');
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}
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function addHashLink(link) {
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var ln = "#!/" + link;
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window.location = ln;
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}
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function showMousePos(GLatLng) {
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var curr_lat = GLatLng.lat().toFixed(4);
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var curr_lon = GLatLng.lng().toFixed(4);
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$("#cursor_lat").html(curr_lat);
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$("#cursor_lon").html(curr_lon);
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// if we have a prediction displayed
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// show range from launch and land:
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if ( current_uuid != 0 && map_items['launch_marker'] != null ) {
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var launch_pt = map_items['launch_marker'].position;
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var land_pt = map_items['land_marker'].position;
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var range_launch = distHaversine(launch_pt, GLatLng, 1);
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var range_land = distHaversine(land_pt, GLatLng, 1);
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$("#cursor_pred_launchrange").html(range_launch);
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$("#cursor_pred_landrange").html(range_land);
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}
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}
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function populateLaunchSite() {
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$("#site > option").remove();
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$.getJSON("sites.json", function(sites) {
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$.each(sites, function(sitename, site) {
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$("<option>").attr("value", sitename).text(sitename).appendTo("#site");
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});
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$("<option>").attr("value", "Other").text("Other").appendTo("#site");
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return true;
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});
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return true;
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}
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function changeLaunchSite() {
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var selectedName = $("#site").val();
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$.getJSON("sites.json", function(sites) {
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$.each(sites, function(sitename, site) {
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if ( selectedName == sitename ) {
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$("#lat").val(site.latitude);
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$("#lon").val(site.longitude);
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$("#initial_alt").val(site.altitude);
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}
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});
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plotClick();
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});
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}
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function throwError(data) {
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$("#error_message").html(data);
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$("#error_window").fadeIn();
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}
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function handlePred(pred_uuid) {
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$("#prediction_status").html("Searching for wind data...");
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$("#input_form").hide("slide", { direction: "down" }, 500);
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$("#scenario_info").hide("slide", { direction: "up" }, 500);
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// disable user control of the map canvas
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$("#map_canvas").fadeTo(1000, 0.2);
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// ajax to poll for progress
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ajaxEventHandle = setInterval("getJSONProgress('"+pred_uuid+"')", stdPeriod);
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}
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function getCSV(pred_uuid) {
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$.get("ajax.php", { "action":"getCSV", "uuid":pred_uuid }, function(data) {
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if(data != null) {
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appendDebug("Got JSON response from server for flight path, parsing...");
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if (parseCSV(data) ) {
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appendDebug("Parsing function returned successfully.");
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appendDebug("Done, AJAX functions quitting.");
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} else {
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appendDebug("The parsing function failed.");
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}
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} else {
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appendDebug("Server couldn't find a CSV for that UUID");
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throwError("Sorry, we couldn't find the data for that UUID. "+
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"Please run another prediction.");
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}
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}, 'json');
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}
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function getJSONProgress(pred_uuid) {
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$.ajax({
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url:"preds/"+pred_uuid+"/progress.json",
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dataType:'json',
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timeout: ajaxTimeout,
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error: function(xhr, status, error) {
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if ( status == "timeout" ) {
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appendDebug("Polling for progress JSON timed out");
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// check that we haven't reached maximum allowed timeout
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if ( ajaxTimeout < maxAjaxTimeout ) {
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// if not, add the delta to the timeout value
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newTimeout = ajaxTimeout + deltaAjaxTimeout;
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appendDebug("Increasing AJAX timeout from " + ajaxTimeout
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+ "ms to " + newTimeout + "ms");
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ajaxTimeout = newTimeout;
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} else if ( ajaxTimeout != hlTimeout ) {
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// otherwise, increase poll delay and timeout
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appendDebug("Reached maximum ajaxTimeout value of " + maxAjaxTimeout);
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clearInterval(ajaxEventHandle);
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appendDebug("Switching to high latency mode");
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appendDebug("Setting polling interval to "+hlPeriod+"ms");
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appendDebug("Setting progress JSON timeout to "+hlTimeout+"ms");
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ajaxTimeout = hlTimeout;
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ajaxEventHandle = setInterval("getJSONProgress('"+pred_uuid+"')", hlPeriod);
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}
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}
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},
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success: processProgress
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});
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}
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function resetGUI() {
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$("#status_message").fadeOut(500);
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// now clear the status window
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$("#prediction_status").html("");
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$("#prediction_progress").progressbar("options", "value", 0);
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$("#prediction_percent").html("");
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$("#cursor_pred").hide();
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// bring the input form back up
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toggleWindow("input_form", null, null, null, "show");
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toggleWindow("scenario_info", null, null, null, "show");
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// un-fade the map canvas
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$("#map_canvas").fadeTo(1500, 1);
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}
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function processProgress(progress) {
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if ( progress['error'] ) {
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clearInterval(ajaxEventHandle);
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appendDebug("There was an error in running the prediction: "+progress['error']);
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} else {
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// get the progress of the wind data
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if ( progress['gfs_complete'] == true ) {
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if ( progress['pred_complete'] == true ) { // pred has finished
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$("#prediction_status").html("Prediction finished.");
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appendDebug("Server says: the predictor finished running.");
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appendDebug("Attempting to retrieve flight path from server");
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// reset the GUI
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resetGUI();
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// stop polling for JSON
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clearInterval(ajaxEventHandle);
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// parse the data
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getCSV(current_uuid);
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addHashLink("uuid="+current_uuid);
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} else if ( progress['pred_running'] != true ) {
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$("#prediction_status").html("Waiting for predictor to run...");
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appendDebug("Server says: predictor not yet running...");
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} else if ( progress['pred_running'] == true ) {
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$("#prediction_status").html("Predictor running...");
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appendDebug("Server says: predictor currently running");
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}
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} else {
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$("#prediction_status").html("Downloading wind data");
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$("#prediction_progress").progressbar("option", "value",
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progress['gfs_percent']);
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$("#prediction_percent").html(progress['gfs_percent'] +
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"% - Estimated time remaining: " + progress['gfs_timeremaining']);
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appendDebug("Server says: downloaded " +
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progress['gfs_percent'] + "% of GFS files");
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}
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}
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return true;
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}
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function parseCSV(lines) {
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if(lines.length <= 0) {
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appendDebug("The server returned an empty CSV file");
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return false;
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}
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var path = [];
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var max_height = -10; //just any -ve number
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var max_point = null;
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var launch_lat;
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var launch_lon;
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var land_lat;
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var land_lon;
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var launch_pt;
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var land_pt;
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var burst_lat;
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var burst_lon;
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var burst_pt;
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var burst_time;
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var launch_time;
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var land_time;
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$.each(lines, function(idx, line) {
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entry = line.split(',');
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if(entry.length >= 4) { // check valid entry length
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var point = new google.maps.LatLng( parseFloat(entry[1]), parseFloat(entry[2]) );
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if ( idx == 0 ) { // get the launch lat/long for marker
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launch_lat = entry[1];
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launch_lon = entry[2];
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launch_time = entry[0];
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launch_pt = point;
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}
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// set on every iteration, last valid entry
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// gives landing position
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land_lat = entry[1];
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land_lon = entry[2];
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land_time = entry[0];
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land_pt = point;
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if(parseFloat(entry[3]) > max_height) {
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max_height = parseFloat(entry[3]);
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burst_pt = point;
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burst_lat = entry[1];
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burst_lon = entry[2];
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burst_time = entry[0];
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}
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path.push(point);
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}
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});
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appendDebug("Flight data parsed, creating map plot...");
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clearMapItems();
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// calculate range and time of flight
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var range = distHaversine(launch_pt, land_pt, 1);
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var flighttime = land_time - launch_time;
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var f_hours = Math.floor((flighttime % 86400) / 3600);
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var f_minutes = Math.floor(((flighttime % 86400) % 3600) / 60);
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if ( f_minutes < 10 ) f_minutes = "0"+f_minutes;
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flighttime = f_hours + "hr" + f_minutes;
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$("#cursor_pred_range").html(range);
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$("#cursor_pred_time").html(flighttime);
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$("#cursor_pred").show();
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// populate the download links
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$("#dlcsv").attr("href", "preds/"+current_uuid+"/flight_path.csv");
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$("#dlkml").attr("href", "kml.php?uuid="+current_uuid);
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// make some nice icons
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var launch_icon = new google.maps.MarkerImage(launch_img,
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new google.maps.Size(16,16),
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new google.maps.Point(0, 0),
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new google.maps.Point(8, 8)
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);
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var land_icon = new google.maps.MarkerImage(land_img,
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new google.maps.Size(16,16),
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new google.maps.Point(0, 0),
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new google.maps.Point(8, 8)
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);
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var launch_marker = new google.maps.Marker({
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position: launch_pt,
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map: map,
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icon: launch_icon,
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title: 'Balloon launch ('+launch_lat+', '+launch_lon+') at ' + POSIXtoHM(launch_time)
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});
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var land_marker = new google.maps.Marker({
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position: land_pt,
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map:map,
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icon: land_icon,
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title: 'Predicted Landing ('+land_lat+', '+land_lon+') at ' + POSIXtoHM(land_time)
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});
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var path_polyline = new google.maps.Polyline({
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path:path,
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map: map,
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strokeColor: '#000000',
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strokeWeight: 3,
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strokeOpacity: 0.75
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});
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var pop_marker = new google.maps.Marker({
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position: burst_pt,
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map: map,
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icon: burst_img,
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title: 'Balloon burst ('+burst_lat+', '+burst_lon+' at altitude ' + max_height + 'm) at ' + POSIXtoHM(burst_time)
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});
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// now add the launch/land markers to map
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// we might need these later, so push them
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// associatively
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map_items['launch_marker'] = launch_marker;
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map_items['land_marker'] = land_marker;
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map_items['pop_marker'] = pop_marker;
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map_items['path_polyline'] = path_polyline;
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// we wiped off the old delta square,
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// and it may have changed anyway, so re-plot
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drawDeltaSquare(map);
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// pan to the new position
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map.panTo(launch_pt);
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map.setZoom(8);
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return true;
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}
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function drawPolygon(points, gmap_object) {
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var newPoly = new google.maps.Polygon({
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paths: points,
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strokeColor: "#FF0000",
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strokeOpacity: 0.4,
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fillColor: "#FFFFFF",
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fillOpacity: 0,
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strokeWeight: 2
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});
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map_items['delta_square'] = newPoly;
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newPoly.setMap(gmap_object);
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}
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function plotClick() {
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// clear the old marker
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clearMapItems();
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// get the new values from the form
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click_lat = parseFloat($("#lat").val());
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click_lon = parseFloat($("#lon").val());
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var click_pt = new google.maps.LatLng(click_lat, click_lon);
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clickMarker = new google.maps.Marker({
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position: click_pt,
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map: map,
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icon: 'images/target-1-sm.png',
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title: 'Currently selected launch location ('+click_lat+', '+click_lon+')'
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});
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map_items['clickMarker'] = clickMarker;
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// redraw the delta square
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drawDeltaSquare(map);
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map.panTo(click_pt);
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map.setZoom(8);
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}
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function drawDeltaSquare(map) {
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// clear any old squares
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if ( map_items['delta_square'] ) map_items['delta_square'].setMap(null);
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// get the values from the form
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var lat = parseFloat($("#lat").val());
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var lon = parseFloat($("#lon").val());
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var dlon = parseFloat($("#delta_lat").val());
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var dlat = parseFloat($("#delta_lon").val());
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// make a rectange of points
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var points = [
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new google.maps.LatLng(lat+dlat, lon+dlon),
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new google.maps.LatLng(lat-dlat, lon+dlon),
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new google.maps.LatLng(lat-dlat, lon-dlon),
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new google.maps.LatLng(lat+dlat, lon-dlon)
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]
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// write the poly to the map
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drawPolygon(points, map);
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}
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function setFormLatLon(GLatLng) {
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$("#lat").val(GLatLng.lat().toFixed(4));
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$("#lon").val(GLatLng.lng().toFixed(4));
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// remove the event handler so another click doesn't register
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setLatLonByClick(false);
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// change the dropdown to read "other"
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SetSiteOther();
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// plot the new marker for launch location
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plotClick();
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}
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function setLatLonByClick(state) {
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if ( state == true ) {
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// check this listener doesn't already exist
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if (!clickListener) {
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clickListener = google.maps.event.addListener(map,
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'click', function(event) {
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$("#error_window").fadeOut();
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setFormLatLon(event.latLng);
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});
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}
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// tell the user what to do next
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throwError("Now click your desired launch location on the map");
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} else if ( state == false ) {
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google.maps.event.removeListener(clickListener);
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clickListener = null;
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} else {
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appendDebug("Unrecognised state for setLatLonByClick");
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}
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}
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function enableMap(map, state) {
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if ( state != false && state != true) {
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appendDebug("Unrecognised map state");
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} else if (state == false) {
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map.draggable = false;
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map.disableDoubleClickZoom = true;
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map.scrollwheel = false;
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map.navigationControl = false;
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} else if (state == true ) {
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map.draggable = true;
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map.disableDoubleClickZoom = false;
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map.scrollwheel = false;
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map.navigationControl = true;
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}
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}
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function clearMapItems() {
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$("#cursor_pred").hide();
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if(getAssocSize(map_items) > 0) {
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appendDebug("Clearing previous map trace");
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for(i in map_items) {
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map_items[i].setMap(null);
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}
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}
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map_items = [];
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}
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function getAssocSize(arr) {
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var i = 0;
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for ( j in arr ) {
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i++;
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}
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return i;
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}
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function appendDebug(appendage, clear) {
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if ( clear == null ){
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var curr = $("#debuginfo").html();
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curr += "<br>" + appendage;
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$("#debuginfo").html(curr);
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} else {
|
|
$("#debuginfo").html("");
|
|
}
|
|
// keep the debug window scrolled to bottom
|
|
scrollToBottom("scenario_template");
|
|
}
|
|
|
|
function scrollToBottom(div_id) {
|
|
$("#"+div_id).animate({scrollTop: $("#"+div_id)[0].scrollHeight});
|
|
}
|
|
|
|
function toggleWindow(window_name, linker, onhide, onshow, force) {
|
|
if ( force == null ) {
|
|
if( $("#"+window_name).css('display') != "none" ){
|
|
$("#"+window_name+"").hide("slide", { direction: "down" }, 500);
|
|
$("#"+linker).html(onhide);
|
|
} else {
|
|
$("#"+window_name).show("slide", { direction: "down" }, 500);
|
|
$("#"+linker).html(onshow);
|
|
}
|
|
} else if ( force == "hide" ) {
|
|
if( $("#"+window_name).css('display') != "none" ){
|
|
$("#"+window_name+"").hide("slide", { direction: "down" }, 500);
|
|
$("#"+linker).html(onhide);
|
|
}
|
|
} else if ( force == "show") {
|
|
if( $("#"+window_name).css('display') == "none" ){
|
|
$("#"+window_name).show("slide", { direction: "down" }, 500);
|
|
$("#"+linker).html(onshow);
|
|
}
|
|
} else {
|
|
appendDebug("toggleWindow force parameter unrecognised");
|
|
}
|
|
}
|
|
|
|
function initMap(centre_lat, centre_lon, zoom_level) {
|
|
// make the map and set center
|
|
var latlng = new google.maps.LatLng(centre_lat, centre_lon);
|
|
var myOptions = {
|
|
zoom: zoom_level,
|
|
scaleControl: true,
|
|
scaleControlOptions: { position: google.maps.ControlPosition.BOTTOM_LEFT } ,
|
|
mapTypeId: google.maps.MapTypeId.TERRAIN,
|
|
center: latlng
|
|
};
|
|
map = new google.maps.Map(document.getElementById("map_canvas"), myOptions);
|
|
}
|
|
|
|
function setupEventHandlers() {
|
|
// attach form submit event handler to launch card
|
|
$("#modelForm").ajaxForm({
|
|
url: 'ajax.php?action=submitForm',
|
|
type: 'POST',
|
|
dataType: 'json',
|
|
success: function(data) {
|
|
if ( data.valid == "false" ) {
|
|
appendDebug("The server rejected the submitted form data");
|
|
throwError("The server rejected the submitted form data: \n" +
|
|
data.error);
|
|
resetGUI();
|
|
} else if ( data.valid == "true" ) {
|
|
predSub();
|
|
appendDebug("The server accepted the form data");
|
|
// update the global current_uuid variable
|
|
current_uuid = data.uuid;
|
|
appendDebug("The server gave us uuid:<br>" + current_uuid);
|
|
appendDebug("Starting to poll for progress JSON");
|
|
handlePred(current_uuid);
|
|
} else {
|
|
appendDebug("data.valid was not a recognised state: " + data.valid);
|
|
}
|
|
}
|
|
});
|
|
$("#location_save_form").ajaxForm({
|
|
url: 'ajax.php?action=locationSave',
|
|
type: 'POST',
|
|
success: function(data) {
|
|
if (data == "true") {
|
|
appendDebug("Server returned OK - closing window");
|
|
$("#location_save").fadeOut();
|
|
} else {
|
|
alert("The server rejected the request for location save");
|
|
appendDebug("Failed to request location save from server");
|
|
}
|
|
}
|
|
});
|
|
// activate the "Set with Map" link
|
|
$("#setWithClick").click(function() {
|
|
setLatLonByClick(true);
|
|
});
|
|
// attach onchange handlers to the lat/long boxes
|
|
$("#lat").change(function() {
|
|
plotClick();
|
|
});
|
|
$("#lon").change(function() {
|
|
plotClick();
|
|
});
|
|
$("#site").change(function() {
|
|
plotClick();
|
|
});
|
|
$("#showHideDebug").click(function() {
|
|
toggleWindow("scenario_template", "showHideDebug", "Show Debug", "Hide Debug");
|
|
});
|
|
$("#showHideDebug_status").click(function() {
|
|
toggleWindow("scenario_template", "showHideDebug", "Show Debug", "Hide Debug");
|
|
});
|
|
$("#showHideForm").click(function() {
|
|
toggleWindow("input_form", "showHideForm", "Show Launch Card",
|
|
"Hide Launch Card");
|
|
});
|
|
$("#closeErrorWindow").click(function() {
|
|
$("#error_window").fadeOut();
|
|
});
|
|
$("#about_window_show").click(function() {
|
|
$("#about_window").dialog({
|
|
modal:true,
|
|
width:400,
|
|
buttons: {
|
|
Close: function() {
|
|
$(this).dialog('close');
|
|
}
|
|
}
|
|
});
|
|
});
|
|
$("#delta_lat").change(function() {
|
|
drawDeltaSquare(map);
|
|
});
|
|
$("#delta_lon").change(function() {
|
|
drawDeltaSquare(map);
|
|
});
|
|
$("#site").change(function() {
|
|
changeLaunchSite();
|
|
});
|
|
$("#req_close").click(function() {
|
|
$("#location_save").fadeOut();
|
|
});
|
|
$("#req_open").click(function() {
|
|
$("#req_lat").val($("#lat").val());
|
|
$("#req_lon").val($("#lon").val());
|
|
$("#req_alt").val($("#initial_alt").val());
|
|
// this is bad, use a geocoder to guess it
|
|
$("#req_name").val("Unnamed");
|
|
$("#location_save").fadeIn();
|
|
});
|
|
google.maps.event.addListener(map, 'mousemove', function(event) {
|
|
showMousePos(event.latLng);
|
|
});
|
|
}
|
|
|
|
function POSIXtoHM(timestamp) {
|
|
// using JS port of PHP's date()
|
|
var ts = new Date();
|
|
ts.setTime(timestamp*1000);
|
|
// account for DST
|
|
if ( ts.format("I") == 1 ) {
|
|
ts.setTime((timestamp-3600)*1000);
|
|
}
|
|
var str = ts.format("H:i");
|
|
return str;
|
|
}
|
|
|
|
function SetSiteOther() {
|
|
$("#site").val("Other");
|
|
}
|
|
|
|
rad = function(x) {return x*Math.PI/180;}
|
|
|
|
distHaversine = function(p1, p2, precision) {
|
|
var R = 6371; // earth's mean radius in km
|
|
var dLat = rad(p2.lat() - p1.lat());
|
|
var dLong = rad(p2.lng() - p1.lng());
|
|
|
|
var a = Math.sin(dLat/2) * Math.sin(dLat/2) +
|
|
Math.cos(rad(p1.lat())) * Math.cos(rad(p2.lat())) * Math.sin(dLong/2) * Math.sin(dLong/2);
|
|
var c = 2 * Math.atan2(Math.sqrt(a), Math.sqrt(1-a));
|
|
var d = R * c;
|
|
if ( precision == null ) {
|
|
return d.toFixed(3);
|
|
} else {
|
|
return d.toFixed(precision);
|
|
}
|
|
}
|
|
|