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WebZadatak.html
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<!DOCTYPE html>
<html>
<head>
<title>Spotlight </title>
<meta charset="UTF-8">
<style>
header {font-family:Georgia,"Times New Roman",serif;
font-size:16px;
display:block; }
canvas {position:absolute; top: 165px; left:0px; z-index:100;}
#place {position:absolute; top: 165px; left: 0px; z-index:1;}
</style>
<script async defer src="https://maps.googleapis.com/maps/api/js?key=AIzaSyBjasjCU-gvYKS6Bq5Txye7iq69jVAMiME&callback=initMap"
type="text/javascript"></script>
<script type="text/javascript" charset="UTF-8">
var locations = [
[46.38444,16.43389, "Čakovec, Hrvatska"],
[48.137154,11.576124,"Munchen, Bavarska, Njemačka"],
[40.416775,-3.703790,"Madrid, Madrid, Španjolska"]
];
var positionopts;
positionopts = {
enableHighAccuracy: true} ;
var candiv;
var can;
var ctx;
var pl;
function init() {
var mylat;
var mylong;
candiv = document.createElement("div");
candiv.innerHTML = ("<canvas id='canvas' width='600' height='400'>No canvas </canvas>");
document.body.appendChild(candiv);
can = document.getElementById("canvas");
pl = document.getElementById("place");
ctx = can.getContext("2d");
can.onmousedown = function () { return false; } ; //prevents change of cursor to default
can.addEventListener('mousemove',showshadow);
can.addEventListener('mousedown',pushcanvasunder);
can.addEventListener("mouseout",clearshadow);
mylat = locations[1][0];
mylong = locations[1][1];
document.getElementById("first").checked="checked";
makemap(mylat,mylong);
}
function pushcanvasunder(ev) {
can.style.zIndex = 1;
pl.style.zIndex = 100;
}
function clearshadow(ev) {
ctx.clearRect(0,0,600,400);
}
function showshadow(ev) {
var mx;
var my;
if ( ev.layerX || ev.layerX == 0) { // Necessary for older browsers
mx= ev.layerX;
my = ev.layerY;
} else if (ev.offsetX || ev.offsetX == 0) { // works with current browsers
mx = ev.offsetX;
my = ev.offsetY;
}
can.style.cursor = "url'light.gif', pointer"; // change to finger when dragging
//rough correction to make center of light
mx = mx+10;
my = my + 12;
drawshadowmask(mx,my);
}
var canvasAx = 0;
var canvasAy = 0;
var canvasBx = 600;
var canvasBy = 0;
var canvasCx = 600;
var canvasCy = 400;
var canvasDx = 0;
var canvasDy = 400;
var holerad = 50;
var grayshadow = "rgba(250,250,250,.8)";
function drawshadowmask(mx,my) {
ctx.clearRect(0,0,600,400);
ctx.fillStyle = grayshadow;
ctx.beginPath();
ctx.moveTo(canvasAx,canvasAy);
ctx.lineTo(canvasBx,canvasBy);
ctx.lineTo(canvasBx,my);
ctx.lineTo(mx+holerad,my);
ctx.arc(mx,my,holerad,0,Math.PI,true);
ctx.lineTo(canvasAx,my);
ctx.lineTo(canvasAx,canvasAy);
ctx.closePath();
ctx.fill();
//ctx.stroke();
ctx.beginPath();
ctx.moveTo(canvasAx,my);
ctx.lineTo(canvasDx,canvasDy);
ctx.lineTo(canvasCx,canvasCy);
ctx.lineTo(canvasBx,my);
ctx.lineTo(mx+holerad,my);
ctx.arc(mx,my,holerad,0,Math.PI,false);
ctx.lineTo(canvasAx,my);
ctx.closePath();
ctx.fill();
// ctx.stroke();
}
var listener;
var map;
var markersArray =[];
var blatlng;
var myOptions;
var rxmarker = "rx1.png";
var bxmarker = "bx1.png";
function makemap(mylat,mylong) {
var marker;
blatlng = new google.maps.LatLng(mylat,mylong);
// alert("latlng is "+latlng);
myOptions = {
zoom: 12,
center: blatlng,
mapTypeId: google.maps.MapTypeId.ROADMAP
//disableDefaultUI: true
};
map = new google.maps.Map(document.getElementById("place"), myOptions);
//mark center
marker = new google.maps.Marker({
position: blatlng,
title: "center",
icon: rxmarker,
map: map });
//
listener = google.maps.event.addListener(map, 'mouseup', function(event) {
checkit(event.latLng);
});
}
function checkit(clatlng) {
var distance = dist(clatlng,blatlng);
//distance = Math.floor((distance+.005)*100)/100;
distance = round(distance,2);
var distanceString = String(distance)+" km";
marker = new google.maps.Marker({
position: clatlng,
title: distanceString,
icon: bxmarker,
map: map });
markersArray.push(marker);
var clat = clatlng.lat();
var clng = clatlng.lng();
clat = round(clat,4);
clng = round(clng,4);
document.getElementById("answer").innerHTML =
"Udaljenost od bazne lokacije ("+clat+", "+clng+") je "+String(distance) +" kilometara.";
//change miles to km depending on value used for R in the dist function.
can.style.zIndex = 100;
pl.style.zIndex = 1;
}
function round (num,places) {
var factor = Math.pow(10,places);
var increment = 5/(factor*10);
return Math.floor((num+increment)*factor)/factor;
}
function dist(point1, point2) {
//spherical law of cosines
//var R = 6371; // km Need to make sure message syncs.
var R = 6371; // miles
var lat1 = point1.lat()*Math.PI/180;
var lat2 = point2.lat()*Math.PI/180 ;
var lon1 = point1.lng()*Math.PI/180;
var lon2 = point2.lng()*Math.PI/180;
var d = Math.acos(Math.sin(lat1)*Math.sin(lat2) +
Math.cos(lat1)*Math.cos(lat2) *
Math.cos(lon2-lon1)) * R;
return d;
}
function changebase() {
var mylat;
var mylong;
for(var i=0;i<locations.length;i++) {
if (document.f.loc[i].checked) {
mylat = locations[i][0];
mylong = locations[i][1];
makemap(mylat,mylong);
document.getElementById("header").innerHTML = "Bazna lokacija je "+locations[i][2];
}
}
return false;
}
</script>
</head>
<body onLoad="init();">
<header id="header">Bazna lokacija </header>
<div id="place" style="width:600px; height:400px"></div>
<div id="answer"></div>
Promjeni baznu lokaciju: <br/>
<form name="f" onSubmit=" return changebase();">
<input type="radio" name="loc" /> Čakovec, Međimurje, Hrvatska<br/>
<input id="first" type="radio" name="loc" /> Munchen, Bavarska, Njemačka<br/>
<input type="radio" name="loc" /> Madrid, Madrid, Španjolska<br/>
<input type="submit" value="CHANGE">
</form>
</body>
</html>