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home.html
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<!DOCTYPE html>
<html>
<head>
<title>Optimal route finding system for ships</title>
<meta charset="utf-8" />
<link rel="stylesheet" crossorigin=""
href="https://unpkg.com/leaflet@1.0.3/dist/leaflet.css" />
<script src="https://unpkg.com/leaflet@1.0.3/dist/leaflet-src.js"
crossorigin=""></script>
<link rel="icon" href="favicon.ico">
<style>
body {
padding: 0;
margin: 0;
}
html, body, #map {
height: 90%;
width: 100%;
}
</style>
</head>
<body>
<div id="map">
<script src="https://unpkg.com/leaflet@1.7.1/dist/leaflet.js"
integrity="sha512-XQoYMqMTK8LvdxXYG3nZ448hOEQiglfqkJs1NOQV44cWnUrBc8PkAOcXy20w0vlaXaVUearIOBhiXZ5V3ynxwA=="
crossorigin=""></script>
</script>
<script>
var mymap = L.map('map').setView([37.629382, 25.716784], 7);
mapLink =
'<a href="http://openstreetmap.org">OpenStreetMap</a>';
L.tileLayer('http://{s}.tile.osm.org/{z}/{x}/{y}.png', {
attribution: '© <a href="http://osm.org/copyright">OpenStreetMap</a> contributors'
}).addTo(mymap);
function searchStartPort() {
var xhr = new XMLHttpRequest();
var searchInput = document.getElementById("myInput").value;
xhr.open("GET", 'http://localhost:3000/api/ports/' + searchInput, true);
xhr.send();
xhr.onload = function () {
if (this.status == 200) {
var ports = JSON.parse(this.responseText);
var coordinates = [];
for (var i = 1; i < ports.length; i++) {
document.getElementById("StartportValue" + i).value = ports[i].properties.country + ',' + ports[i].properties.portname;
}
}
};
}
function searchEndPort() {
var xhr = new XMLHttpRequest();
var searchInput = document.getElementById("myInputB").value;
xhr.open("GET", 'http://localhost:3000/api/ports/' + searchInput, true);
xhr.send();
xhr.onload = function () {
if (this.status == 200) {
var ports = JSON.parse(this.responseText);
var coordinates = [];
for (var i = 1; i < ports.length; i++) {
document.getElementById("EndportValue" + i).value = ports[i].properties.country + ',' + ports[i].properties.portname;
coordinates = ports[i].geometry.coordinates;
}
}
};
}
//pins for the ports
var startMarker = {};
var startPort;
//markers for closest polygons
var dot = {};
var dot2 = {};
//coords of the start and end port
var Scoordinates = [];
var Ecoordinates = [];
var crd;
var x;
var y;
var endPort;
var endMarker = {};
var newdist;
var closestPoint;
var closestStartPointName;
var connectStart;
var connectEnd;
var closestEndPoint;
var closestEndPointName;
var Sreal_coord = [];
var Ereal_coord = [];
var newEnddist;
//result path
var result;
//polyline
var firstpolyline = {};
function putStartPin() {
mymap.removeLayer(startMarker);
mymap.removeLayer(dot);
mymap.removeLayer(firstpolyline);
newdist = 100000;
var value;
value = document.getElementById("myInput").value;
startPort = value.split(',')[1];
var xhr = new XMLHttpRequest();
xhr.open("GET", 'http://localhost:3000/api/ports/' + startPort, true);
xhr.send();
xhr.onload = function () {
if (this.status == 200) {
var ports = JSON.parse(this.responseText);
//console.log(ports[0].geometry.coordinates);
if (ports.length > 0) {
Scoordinates = ports[0].geometry.coordinates;
//console.log(Scoordinates);
crd = Scoordinates[0].split(',');
x = crd[0].replace("[","");
y = crd[1].replace("]","");
//console.log(Number(x));
//console.log(Number(y));
if (startMarker != 'undefined') {
mymap.removeLayer(startMarker);
}
startMarker = L.marker([Number(y),Number(x)]).addTo(mymap);
mymap.setView([y,x],6);
//console.log("Port: "+y+","+x);
var xhr2 = new XMLHttpRequest();
xhr2.open("GET", 'http://localhost:3000/api/phaseTwoGet', true);
xhr2.send();
xhr2.onload = function () {
if (this.status == 200) {
var polygons = JSON.parse(this.responseText)
//all points from edges (polygons)
//console.log(polygons);
var allPoints = []
for (j = 0; j < polygons.length; j++) {
allPoints.push([Number(polygons[j].Edge[0][1]),Number(polygons[j].Edge[0][0])]);
allPoints.push([Number(polygons[j].Edge[1][1]),Number(polygons[j].Edge[1][0])]);
}
//console.log(allPoints);
for (i = 0; i < allPoints.length; i++) {
var distance = findDistance(Number(y), Number(x), allPoints[i][0], allPoints[i][1], "N")
//console.log(distance);
if (distance < 162 && distance < newdist) {
newdist = distance;
closestPoint = [allPoints[i][0], allPoints[i][1]];
}
}
//console.log(closestPoint);
//console.log(closestStartPointName);
Sreal_coord = [Number(y),Number(x)];
console.log("Start Port: "+Sreal_coord);
console.log("Closest Start Point: "+closestPoint);
dot = L.circleMarker(closestPoint).addTo(mymap);
document.getElementById("myInputB").disabled = false;
//console.log("Closest polygon start point: "+closestPoint);
//console.log("Start id polygon:" + closestPointName);
connectStart = [(Sreal_coord), (closestPoint)];
//console.log(connectStart);
}
};
}
}
};
}
function putEndPin() {
mymap.removeLayer(endMarker);
mymap.removeLayer(dot2);
mymap.removeLayer(firstpolyline);
newEnddist = 100000;
var value;
value = document.getElementById("myInputB").value;
endPort = value.split(',')[1];
var xhrend = new XMLHttpRequest();
xhrend.open("GET", 'http://localhost:3000/api/ports/' + endPort, true);
xhrend.send();
xhrend.onload = function () {
if (this.status == 200) {
var ports = JSON.parse(this.responseText);
if (ports.length > 0) {
Ecoordinates = ports[0].geometry.coordinates;
//console.log(Ecoordinates);
crd = Ecoordinates[0].split(',');
x = crd[0].replace("[","");
y = crd[1].replace("]","");
//console.log(Number(x));
//console.log(Number(y));
if (endMarker != 'undefined') {
mymap.removeLayer(endMarker);
}
endMarker = L.marker([Number(y),Number(x)]).addTo(mymap);
var group = new L.featureGroup([startMarker, endMarker]);
mymap.fitBounds(group.getBounds());
var xhr2 = new XMLHttpRequest();
xhr2.open("GET", 'http://localhost:3000/api/phaseTwoGet', true);
xhr2.send();
xhr2.onload = function () {
if (this.status == 200) {
var polygons = JSON.parse(this.responseText);
var allPoints = [];
for (j = 0; j < polygons.length; j++) {
allPoints.push([Number(polygons[j].Edge[0][1]),Number(polygons[j].Edge[0][0])]);
allPoints.push([Number(polygons[j].Edge[1][1]),Number(polygons[j].Edge[1][0])]);
}
//console.log(allPoints);
for (i = 0; i < allPoints.length; i++) {
var distance = findDistance(Number(y), Number(x), allPoints[i][0], allPoints[i][1], "N")
//console.log(distance);
if (distance < 162 && distance < newEnddist) {
newEnddist = distance;
closestEndPoint = [allPoints[i][0], allPoints[i][1]];
}
}
Ereal_coord = [Number(y),Number(x)];
console.log("End Port: "+Ereal_coord);
console.log("Closest End Point: "+closestEndPoint);
dot2 = L.circleMarker(closestEndPoint).addTo(mymap);
//console.log("Closest centroid end point: "+closestEndPoint);
connectEnd = [(Ereal_coord), (closestEndPoint)];
}
};
}
}
};
}
//pre-process
function phaseOne(){
var xhr = new XMLHttpRequest();
xhr.open("GET", 'http://localhost:3000/api/phaseOne', true);
xhr.send();
xhr.onload = function () {
//get polygons dataset
var tankerPolygons = JSON.parse(this.responseText);
//console.log(tankerPolygons);
var centroids = [];
var correctCoords = [];
for (var i = 0; i < tankerPolygons.length; i++) {
//find centroid
stringPolygon = tankerPolygons[i].Coordinates;
//console.log(stringPolygon);
stringPolygon = stringPolygon.replace("POLYGON ((","");
stringPolygon = stringPolygon.replace("))","");
//console.log(stringPolygon);
var coords = stringPolygon.split(',');
//console.log(coords);
var totalX = 0;
var totalY = 0;
var res;
//the first coord does't have space in front of it, rest have
res = coords[0].split(" ");
totalX = totalX + Number(res[0]);
totalY = totalY + Number(res[1]);
//console.log("X: " + res[0]);
//console.log("Y: " + res[1]);
var points = [];
points.push([totalX.toString(),totalY.toString()]);
for (j = 1; j < coords.length; j++) {
res = coords[j].split(" ");
points.push([res[1],res[2]]);
//console.log("X: " + res[1]);
//console.log("Y: " + res[2]);
totalX = totalX + Number(res[1]);
totalY = totalY + Number(res[2]);
}
correctCoords.push(points);
//console.log("Total X:" + totalX);
//console.log("Total Y:" + totalY);
//lat - lon - thats why Y first X second
//var centroid = [(totalY/coords.length),(totalX/coords.length)];
var centroid = [(Number(totalY/coords.length).toFixed(1).toString()+"0"),(Number(totalX/coords.length).toFixed(1).toString()+"0")];
//console.log("Centroid: "+centroid);
//var xCentroid= Number(centroid[1]).toFixed(1).toString()+"0";
//var yCentroid= Number(centroid[0]).toFixed(1).toString()+"0";
centroids.push(centroid);
}
//console.log(centroids);
//get edge with start end from every polygon
//var allpoints = [];
var polyEdges = [];
for(var k = 0; k< correctCoords.length; k++){
var allpoints = correctCoords[k];
var dots = [];
var results = [];
var onlyBearing = [];
for(var v = 0; v< allpoints.length; v++){
dots.push(allpoints[v]);
}
//all combinations
for (let i = 0; i < dots.length - 1; i++) {
for (let j = i + 1; j < dots.length; j++) {
if( dots[i][0]!==dots[j][0] && dots[i][1]!==dots[j][1] ){
//mistakenly made edges->x,y and centroids y,x
results.push([[dots[i][0],dots[i][1]], [dots[j][0],dots[j][1]] , bearing(Number(dots[i][0]),Number(dots[i][1]),Number(dots[j][0]),Number(dots[j][1])) ]);
onlyBearing.push( bearing(Number(dots[i][0]),Number(dots[i][1]),Number(dots[j][0]),Number(dots[j][1])) );
}
}
}
//console.log(results);
var goal = tankerPolygons[k].MEAN_HEADING;
if (onlyBearing.length > 1) {
var closest = onlyBearing.reduce(function(prev, curr) {
return (Math.abs(curr - goal) < Math.abs(prev - goal) ? curr : prev);
});
//console.log("Goal: "+goal+" - Closest: "+closest);
var index = onlyBearing.indexOf(closest);
//console.log("Found edge: "+results[index]);
polyEdges.push(results[index]);
}
}
//console.log(polyEdges);
// get all weather data and complete data together
var xhr2 = new XMLHttpRequest();
xhr2.open("GET", 'http://localhost:3000/api/weatherData', true);
xhr2.send();
xhr2.onload = function () {
var weather = JSON.parse(this.responseText);
//console.log(weather);
//console.log(centroids);
//weather data match - for every centroid, find weather data
for (var j = 0; j < polyEdges.length; j++) {
var dataWeather = [];
//var centroidsWeather = [];
for(var k = 0; k< weather.length; k++){
if(centroids[j][0]==weather[k].LATITUDE && centroids[j][1]==weather[k].LONGITUDE ){
dataWeather.push([weather[k].DATE,weather[k].WIND_DIR,weather[k].WIND_SPEED]);
//centroidsWeather.push([[centroids[j][0],centroids[j][1]],weather[k].WIND_DIR,weather[k].WIND_SPEED,tankerPolygons[j].Coordinates,tankerPolygons[j].Avg_speed,tankerPolygons[j].MEAN_HEADING]);
}
}
//centroidsWeather.push([polyEdges[j],[centroids[j][0],centroids[j][1]],dataWeather,correctCoords[j],tankerPolygons[j].Avg_speed,tankerPolygons[j].MEAN_HEADING]);
//post to database
//var json = JSON.stringify(centroidsWeather);
var jsonEdge = JSON.stringify(polyEdges[j]);
//var jsonCoordinates = JSON.stringify(correctCoords[j]);
//var jsonCentroid = JSON.stringify([centroids[j][0],centroids[j][1]]);
var jsonWeather = JSON.stringify(dataWeather);
//find same points for weather data "_id":"'+ id +'",
var text = '{"Edge" : ' + jsonEdge + ' ,"Weather" : ' + jsonWeather + ', "Avg_speed" : ' + tankerPolygons[j].Avg_speed + ', "MEAN_HEADING" : "' + tankerPolygons[j].MEAN_HEADING + '" }';
var xhr3 = new XMLHttpRequest();
xhr3.open("POST", 'http://localhost:3000/api/phaseTwoAdd', true);
xhr3.setRequestHeader("Content-Type", "application/json");
//console.log("Sent to server: "+text);
xhr3.send(text);
}
//console.log(centroidsWeather);
};
};
}
// 0 is start
// 1 is end
//centroids are y,x and edges are x,y :(
function phaseTwo(){
console.log("Start port coords:" + Sreal_coord);
console.log("End port coords:" + Ereal_coord);
console.log("Closest polygon start point: " + closestPoint);
console.log("Closest polygon end point: " + closestEndPoint);
/*
//load the results to json data, takes around 7-9minutes for aegean graph with 3nautic miles or less neighbours
var newdist = 1000000;
var xhr = new XMLHttpRequest();
xhr.open("GET", 'http://localhost:3000/api/phaseTwoGet', true);
xhr.send();
xhr.onload = function () {
var polygons = JSON.parse(this.responseText);
var aegean = [];
//19.248047,34.849875,29.025879,41.195190 bbox of greece
for (var i = 0; i < polygons.length; i++) {
//console.log([Number(polygons[i].Centroid[1]),Number(polygons[i].Centroid[0])]);
//console.log("..");
if( (19.248047 <= Number(polygons[i].Edge[0][0]) && Number(polygons[i].Edge[0][0]) <= 29.025879 && 41.195190 >= Number(polygons[i].Edge[0][1]) && Number(polygons[i].Edge[0][1]) >= 34.849875)
&& (19.248047 <= Number(polygons[i].Edge[1][0]) && Number(polygons[i].Edge[1][0]) <= 29.025879 && 41.195190 >= Number(polygons[i].Edge[1][1]) && Number(polygons[i].Edge[1][1]) >= 34.849875) ){
// Point is in bounding box
//console.log("in");
aegean.push(polygons[i]);
//var dot = L.circleMarker([Number(polygons[i].Edge[0][1]),Number(polygons[i].Edge[0][0])]).addTo(mymap);
//var dot2 = L.circleMarker([Number(polygons[i].Edge[1][1]),Number(polygons[i].Edge[1][0])]).addTo(mymap);
}
}
//console.log(aegean);
var g = new Graph();
for (var i = 0; i < aegean.length; i++) {
var test = Math.round(aegean[i].Avg_speed * 10) / 10;
g.addVertex(aegean[i].Edge[0][0]+", "+aegean[i].Edge[0][1]);
g.addVertex(aegean[i].Edge[1][0]+", "+aegean[i].Edge[1][1]+ " " + test);
var startx = Number(aegean[i].Edge[0][0]);
var starty = Number(aegean[i].Edge[0][1]);
var endx = Number(aegean[i].Edge[1][0]);
var endy = Number(aegean[i].Edge[1][1]);
//console.log(test);
g.addEdge(aegean[i].Edge[0][0] + ", "+aegean[i].Edge[0][1],aegean[i].Edge[1][0]+", "+aegean[i].Edge[1][1] + " " + test,findDistance(starty, startx, endy, endx, "N"));
}
//connect nearest edges
for (var i = 0; i < aegean.length; i++) {
//for edges x->0 y->1
//take the end of the edge of each (polygon)
var endx = Number(aegean[i].Edge[1][0]);
var endy = Number(aegean[i].Edge[1][1]);
//var distanceArray = [];
var closeStartX;
var closeStartY;
var distance;
//var distance = findDistance(startx, starty, endx, endy, "N")
for (var j = 0; j < aegean.length; j++) {
//another end of another edge
closeStartX = Number(aegean[j].Edge[0][0]);
closeStartY = Number(aegean[j].Edge[0][1]);
//var newstartx = Number(polygons[j].Edge[0][0]);
//var newstarty = Number(polygons[j].Edge[0][1]);
if( i!=j ){
distance = findDistance(endy, endx, closeStartY, closeStartX, "N");
//HERE add extra check for wind
//to prwto miden edw tha ginetai oti exei pei gia date o xristis
//if(typeof aegean[i].Weather[0] !== 'undefined' && typeof aegean[j].Weather[0] !== 'undefined' ){
if (distance < 3) {
//newdist = distance;
//closestStartOfEdge = [closeStartY, closeStartX];
//newEnd = [Number(polygons[j].Edge[1][1], Number(polygons[j].Edge[1][0]];
var test = Math.round(aegean[i].Avg_speed * 10) / 10;
g.addEdge(aegean[i].Edge[1][0] + ", "+aegean[i].Edge[1][1] + " " + test, aegean[j].Edge[0][0] + ", "+aegean[j].Edge[0][1],distance);
console.log("new edge");
}
//}
}
}
//found closest end point of another edge so connect! end with start
}
//var display = JSON.stringify(g);
//console.log(JSON.parse(display));
//save graph to memory
export2txt(g);
//x,y - lng,lat
// && (Math.abs(Number(aegean[j].Weather[0][1])-aegean[j].MEAN_HEADING) < 180) mesa sto iff distance < 3
//( ((aegean[j].Weather[0][1]<=360 && aegean[j].Weather[0][1] >= 270) && (aegean[j].MEAN_HEADING<=360 && aegean[j].MEAN_HEADING >= 270)) || ((aegean[j].Weather[0][1]<=269.9 && aegean[j].Weather[0][1] >= 180) && (aegean[j].MEAN_HEADING<=269.9 && aegean[j].Weather[0][1] >= 180)) || ((aegean[i].Weather[0][1]<=179.9 && aegean[i].Weather[0][1] >= 90) && (aegean[j].Weather[0][1]<=179.9 && aegean[j].Weather[0][1] >= 90)) || ((aegean[i].Weather[0][1]<=89.9 && aegean[i].Weather[0][1] >= 0) && (aegean[j].Weather[0][1]<=89.9 && aegean[j].Weather[0][1] >= 0)) )
*/
//start finish for dijkstra
var start = closestPoint[1]+", "+closestPoint[0];
var finish = closestEndPoint[1]+", "+closestEndPoint[0];
//loads the graph from json file to buy time
var xhr5 = new XMLHttpRequest();
xhr5.open("GET", 'http://localhost:3000/api/loadGraph', true);
xhr5.send();
xhr5.onload = function () {
var data = JSON.parse(this.responseText);
//console.log(data);
//var word = "22.19529, 36.310558";
//console.log(data.adjacencyList[word]);
var g = new Graph();
for (var key in data.adjacencyList){
g.addVertex(key);
var values = data.adjacencyList[key];
for (var key2 in values){
//console.log("Key2: " + key2);
//console.log("value: "+ values[key2]);
g.addVertex(key2);
g.addEdge(key,key2,values[key2]);
}
}
//console.log(g);
result = g.Dijkstra(start,finish);
console.log(result);
line(result);
document.getElementById("myInputB").disabled = true;
document.getElementById("myInputB").value = '';
document.getElementById("myInput").value = '';
//var distance = totalDistance(result);
//calculate distance/time/speed
//document.getElementById("Distance").innerHTML = distance;
//document.getElementById("Time").innerHTML = "6h";
//document.getElementById("Speed").innerHTML = "Calculating...";
};
//};
}
function totalDistance(result){
var total = 0;
for(var i = 0; i <result.length-1; i++){
var split1 = result[i].split(", ");
var split2 = result[i+1].split(", ");
//console.log("lon1: " + split1[0]);
//console.log("lat1: " + split1[1]);
//console.log("lon2: " + split2[0]);
//console.log("lat2: " + split2[1]);
var lat1 = split1[1];
var lon1 = split1[0];
var lat2 = split2[1];
var lon2 = split2[0];
total = total + findDistance(lat1,lon1,lat2,lon2,"N");
}
//adds the distances from ports to closest polygons (for start and end port)
total = total + findDistance(Sreal_coord[0],Sreal_coord[1],closestPoint[0],closestPoint[1],"N");
total = total + findDistance(Ereal_coord[0],Ereal_coord[1],closestEndPoint[0],closestEndPoint[1],"N");
return total;
}
function export2txt(data) {
const originalData = data;
console.log("in!");
const a = document.createElement("a");
a.href = URL.createObjectURL(new Blob([JSON.stringify(originalData, null, 2)], {
type: "application/json"
}));
a.setAttribute("download", "data.json");
document.body.appendChild(a);
a.click();
document.body.removeChild(a);
}
//check path display
function line(thepath){
var path = thepath;
var pointList = [];
for (var i = 0; i < path.length; i++) {
var temp = path[i].split(', ');
//console.log("x: "+temp[0]);
//console.log("Y: "+temp[1]);
var point = new L.LatLng(Number(temp[1]), Number(temp[0]));
pointList.push(point);
}
firstpolyline = new L.Polyline(pointList, {
color: 'red',
weight: 3,
opacity: 0.5,
smoothFactor: 1
});
firstpolyline.addTo(mymap);
}
// Converts from degrees to radians.
function toRadians(degrees) {
return degrees * Math.PI / 180;
};
// Converts from radians to degrees.
function toDegrees(radians) {
return radians * 180 / Math.PI;
}
function bearing(startLat, startLng, destLat, destLng){
startLat = toRadians(startLat);
startLng = toRadians(startLng);
destLat = toRadians(destLat);
destLng = toRadians(destLng);
y = Math.sin(destLng - startLng) * Math.cos(destLat);
x = Math.cos(startLat) * Math.sin(destLat) -
Math.sin(startLat) * Math.cos(destLat) * Math.cos(destLng - startLng);
brng = Math.atan2(y, x);
brng = toDegrees(brng);
return (brng + 360) % 360;
}
class Graph {
constructor() {
this.adjacencyList = {};
}
addVertex(name) {
if (!this.adjacencyList[name]) {
this.adjacencyList[name] = {};
}
}
addEdge(vert1, vert2, weight) {
this.adjacencyList[vert1][vert2] = weight;
}
removeEdge(v1,v2) {
delete this.adjacencyList[v1][v2];
delete this.adjacencyList[v2][v1];
}
Dijkstra(start, finish) {
// List1
const costFromStartTo = {};
// List2
const checkList = new PriorityQueue();
// List3
const prev = {};
let current;
let result = [];
let speeds = [];
for (let vert in this.adjacencyList) {
if (vert === start) {
costFromStartTo[vert] = 0;
checkList.enqueue(vert, 0);
} else {
costFromStartTo[vert] = Infinity;
}
prev[vert] = null
}
while (checkList.values.length) {
current = checkList.dequeue().val;
if (current === finish) {
while (prev[current]) {
result.push(current);
//var fix = this.adjacencyList[current][prev[current]].split(" ");
//console.log("current: "+current);
//console.log("prev curr: "+prev[current]);
//console.log(this.adjacencyList[prev[current]][current]);
var fix = this.adjacencyList[prev[current]][current].split(" ");
speeds.push(fix[1]);
current = prev[current];
}
break;
}else{
for (let neighbor in this.adjacencyList[current]) {
//console.log(this.adjacencyList[current][neighbor]);
var fix = this.adjacencyList[current][neighbor].split(" ");
//console.log(Number(fix[0]));
let costToNeighbor = costFromStartTo[current] + Number(fix[0]);
if (costToNeighbor < costFromStartTo[neighbor]) {
costFromStartTo[neighbor] = costToNeighbor;
prev[neighbor] = current;
checkList.enqueue(neighbor, costToNeighbor);
}
}
}
}
console.log(speeds);
var sum = 0
for (var i = 0; i < speeds.length; i++) {
sum = sum + Number(speeds[i]);
}
var total = sum/speeds.length;
document.getElementById("Speed").innerHTML = total + " Nm/h";
var distance = totalDistance(result);
document.getElementById("Distance").innerHTML = distance + " Nm";
var decimalTime = Number(distance)/Number(total);
decimalTime = decimalTime * 60 * 60;
var hours = Math.floor((decimalTime / (60 * 60)));
decimalTime = decimalTime - (hours * 60 * 60);
var minutes = Math.floor((decimalTime / 60));
decimalTime = decimalTime - (minutes * 60);
var seconds = Math.round(decimalTime);
if(hours < 10)
{
hours = "0" + hours;
}
if(minutes < 10)
{
minutes = "0" + minutes;
}
if(seconds < 10)
{
seconds = "0" + seconds;
}
document.getElementById("Time").innerHTML = "" + hours + ":" + minutes + ":" + seconds;
return result.concat(current).reverse();
}
}
class PriorityQueue {
constructor(){
this.values = [];
}
enqueue(val, priority) {
this.values.push({val, priority});
this.sort();
};
dequeue() {
return this.values.shift();
};
sort() {
this.values.sort((a, b) => a.priority - b.priority);
};
}
function findDistance(lat1, lon1, lat2, lon2, unit) {
if ((lat1 == lat2) && (lon1 == lon2)) {
return 0;
}
else {
var radlat1 = Math.PI * lat1 / 180;
var radlat2 = Math.PI * lat2 / 180;
var theta = lon1 - lon2;
var radtheta = Math.PI * theta / 180;
var dist = Math.sin(radlat1) * Math.sin(radlat2) + Math.cos(radlat1) * Math.cos(radlat2) * Math.cos(radtheta);
if (dist > 1) {
dist = 1;
}
dist = Math.acos(dist);
dist = dist * 180 / Math.PI;
dist = dist * 60 * 1.1515;
if (unit == "K") { dist = dist * 1.609344 }
if (unit == "N") { dist = dist * 0.8684 }
return dist;
}
}
</script>
</div>
<div class="info">
<div id="Title">Optimal route finding system for ships</div>
<div class="sub-heading">
<div id="Title2">Please choose 2 ports to calculate best route.</div>
</div>
</div>
<div class="portA">
<input id="myInput" type="text" list="portList" name="start"
onkeyup="searchStartPort()" oninput="putStartPin()"
placeholder="Start Port" tabindex="1" autocomplete="off"
class="auto-style1" />
<datalist id="portList">
<option id="StartportValue1" value="" />
<option id="StartportValue2" value="" />
<option id="StartportValue3" value="" />
<option id="StartportValue4" value="" />
</datalist>
</div>
<div class="portB">
<input id="myInputB" type="text" list="portList2" name="end"
onkeyup="searchEndPort()" oninput="putEndPin()" disabled="disabled"
placeholder="Destination Port" tabindex="2" autocomplete="off"
class="auto-style1" />
<datalist id="portList2">
<option id="EndportValue1" value="" />
<option id="EndportValue2" value="" />
<option id="EndportValue3" value="" />
<option id="EndportValue4" value="" />
</datalist>
</div>
<button type="button" class="myButton" id="calculate"
onclick="phaseTwo()">Calculate</button>
<!-- <button onclick="export2txt()">Export data to local txt file</button> -->
<div class="Results" style="position:absolute; float:right;">
<div id="ResultTitle"><u>Results: </u></div>
<div class="dist">
<label>Total distance:</label>
<label id="Distance">Empty</label>
</div>
<div class="speed">
<label>Average Speed:</label>
<label id="Speed">Empty</label>
</div>
<div class="time">
<label>Total trip time:</label>
<label id="Time">Empty</label>
</div>
</div>
</body>
</html>