var mapaVOkoli = function (id) {
	this.ukazAdresu  = function (bod) {
		this.mapa.setCenter (bod, this.priblizeni);
	}

	this.vytvorZnacku = function (index, informace) {
		var pismeno = String.fromCharCode ("A".charCodeAt(0) + index);
		var ikonaSPismenem = new GIcon (this.zakladniIkona);
		ikonaSPismenem.image = "http://www.portalymest.cz/images/ikonyMapa/marker" + pismeno + ".png";
		
		var znackaMoznosti = {icon:ikonaSPismenem};
		var znacka = new GMarker (new GLatLng(informace['lat'], informace['lng']), znackaMoznosti);

		var htmlZnacky = informace['htmlObrazky'] + "<div class=\"vypisTextuMapa\"><span class=\"abeceda\">" + pismeno + "</span><span class=\"mapaNadpis\">" + informace['nazev'] + "</span><span class=\"mapaPopis\">" + informace['popis'] + "</span><span class=\"mapaOdkaz\"><a href=\"/" + informace['urlSystem']+ "/\" title=\"více informací\">více informací</a></span></div>";

		var oknoMoznosti = {maxWidth:460};
		GEvent.addListener (znacka, "click", function() {
			znacka.openInfoWindowHtml (htmlZnacky, oknoMoznosti);
		});
		GEvent.addDomListener (document.getElementById ("pismeno" + pismeno), "click", function() {
			znacka.openInfoWindowHtml (htmlZnacky, oknoMoznosti);
		});
		
		return znacka;
	}
	
	this.nactiOblast = function (zaznamy) {
		this.pocetCilu = zaznamy.length;
		if (zaznamy.length > 0) {
			var znacka;
			for (var i = 0; i < zaznamy.length; i++) {
				if (zaznamy[i] != '!neexistuje') {
					znacka = this.vytvorZnacku (i, zaznamy[i]);
					this.mapa.addOverlay (znacka);
					this.oblast.extend (znacka.getLatLng ());
					this.cile[i] = znacka.getLatLng ();	
				}
			}
			this.oblast.extend (this.stred);		
		}
	}

	this.zobrazOblast = function () {
		if (!this.oblast.isEmpty ()) {
			this.mapa.setZoom (this.mapa.getBoundsZoomLevel (this.oblast));
			this.mapa.setCenter (this.oblast.getCenter());
		}
	}

	this.poziceNaKruhu = function (stred, uhel, polomer) {
		with (Math) {
			var d = polomer / 6372795;
		
			var lat1 = (PI / 180) * stred.lat ();
			var lng1 = (PI / 180) * stred.lng ();
		
			var tc = (PI / 180) * uhel;
			var y = asin (sin (lat1) * cos (d) + cos (lat1) * sin (d) * cos (tc));
			var dlng = atan2 (sin (tc) * sin (d) * cos (lat1), cos (d) - sin (lat1) * sin (y));
			var x = ((lng1 - dlng + PI) % (2 * PI)) - PI ;
			return new GLatLng (parseFloat (y * (180 / PI)), parseFloat (x * (180 / PI)));
		}
	}

	this.vzdalenostDvouBodu = function (bod1, bod2) {
	  return bod1.distanceFrom (bod2, 6372795);
	}

	this.nakresliKruh = function (stred, polomer) {
		this.body = [];
		var bod;
		for (var i = 0; i < 72; i++) {
			bod = this.poziceNaKruhu (stred, i * 360 / 72, polomer);
		  this.body.push (bod);
			this.oblast.extend (bod);		
		}
		this.body.push (this.poziceNaKruhu (stred, 0, polomer));
		this.mnohouhelnik = new GPolygon (this.body, '#d3222a', 1, 0.5, '#d3222a', 0.1);
		this.mapa.addOverlay (this.mnohouhelnik);
	}

	this.obnovKruhZPolomeru = function (cisloZnacky) {
		this.mapa.removeOverlay (this.mnohouhelnik);
		switch (cisloZnacky) {
			case 1:
				this.polomer = this.vzdalenostDvouBodu (this.stred, this.polomerZnacka1.getPoint ());
			break;
			case 2:
				this.polomer = this.vzdalenostDvouBodu (this.stred, this.polomerZnacka2.getPoint ());
			break;
			case 3:
				this.polomer = this.vzdalenostDvouBodu (this.stred, this.polomerZnacka3.getPoint ());
			break;
			case 4:
				this.polomer = this.vzdalenostDvouBodu (this.stred, this.polomerZnacka4.getPoint ());
			break;
		}

		this.nakresliKruh (this.stred, this.polomer);
		document.getElementById ('vzdalenost').value = Math.round (100 * this.polomer / 1000) / 100;

		switch (cisloZnacky) {
			case 1:
				this.polomerZnacka2.setLatLng (this.body[1 * 72 / 4]);
				this.polomerZnacka3.setLatLng (this.body[2 * 72 / 4]);
				this.polomerZnacka4.setLatLng (this.body[3 * 72 / 4]);
			break;
			case 2:
				this.polomerZnacka1.setLatLng (this.body[0 * 72 / 4]);
				this.polomerZnacka3.setLatLng (this.body[2 * 72 / 4]);
				this.polomerZnacka4.setLatLng (this.body[3 * 72 / 4]);
			break;
			case 3:
				this.polomerZnacka1.setLatLng (this.body[0 * 72 / 4]);
				this.polomerZnacka2.setLatLng (this.body[1 * 72 / 4]);
				this.polomerZnacka4.setLatLng (this.body[3 * 72 / 4]);
			break;
			case 4:
				this.polomerZnacka1.setLatLng (this.body[0 * 72 / 4]);
				this.polomerZnacka2.setLatLng (this.body[1 * 72 / 4]);
				this.polomerZnacka3.setLatLng (this.body[2 * 72 / 4]);
			break;
		}
	}

	this.obnovKruhZeStredu = function () {
		this.mapa.removeOverlay (this.mnohouhelnik);
		this.stred = this.stredKruhuZnacka.getPoint ();
		this.nakresliKruh (this.stred, this.polomer);
		this.polomerZnacka1.setLatLng (this.body[0 * 72 / 4]);
		this.polomerZnacka2.setLatLng (this.body[1 * 72 / 4]);
		this.polomerZnacka3.setLatLng (this.body[2 * 72 / 4]);
		this.polomerZnacka4.setLatLng (this.body[3 * 72 / 4]);
	}

	this.odesliFormular = function () {
		this.stred = this.stredKruhuZnacka.getPoint ();
		document.getElementById ('lat').value = this.stred.lat ();
		document.getElementById ('lng').value = this.stred.lng ();
		document.getElementById ('vzdalenost').value = Math.round (100 * this.vzdalenostDvouBodu (this.stred, this.polomerZnacka1.getPoint ()) / 1000) / 100;
 		zaneprazdneno.zobraz ();
 		document.formularVOkruhu.submit ();
	}

	this.odesliFormularStred = function () {
		this.stred = this.stredKruhuZnacka.getPoint ();
		document.getElementById ('lat').value = this.stred.lat ();
		document.getElementById ('lng').value = this.stred.lng ();
 		zaneprazdneno.zobraz ();
 		document.formularVOkruhu.submit ();
	}

	this.zobrazCestu = function () {
		//POZOR, neresi se jazyky a prevadi se tecka na carku a tisice nefunguji
		var vzdalenostVzduchem = parseFloat (this.vzdalenostDvouBodu (this.stred, this.cile[0]));
		if (vzdalenostVzduchem > 1000)
			vzdalenostVzduchem = (vzdalenostVzduchem / 1000).toFixed (2).toString ().replace('.', ',') + ' KM';
		else
			vzdalenostVzduchem = parseInt (vzdalenostVzduchem).toString ().replace('.', ',') + ' M';
		document.getElementById ('vzduchId' + this.aktualniCil).innerHTML = vzdalenostVzduchem;

		var status = this.cesty.getStatus ();
		if (status.code == 200) {
			var vzdalenostPoCeste = parseFloat (this.cesty.getDistance ().meters);
			if (vzdalenostPoCeste > 1000)
				vzdalenostPoCeste = (vzdalenostPoCeste / 1000).toFixed (2).toString ().replace('.', ',') + ' KM';
			else
				vzdalenostPoCeste = parseInt (vzdalenostPoCeste).toString ().replace('.', ',') + ' M';
			var sekundy = this.cesty.getDuration ().seconds;
			var hodiny = parseInt (sekundy / 3600);
			var minuty = parseInt (sekundy / 60) - (hodiny * 60);
			document.getElementById ('cestaId' + this.aktualniCil).innerHTML = vzdalenostPoCeste + ' / ' + doplnNulu (hodiny) + ':' + doplnNulu (minuty) + ' H';
			
			var bodyDrahy = new Array ();
			var draha = this.cesty.getPolyline ();
// 			var prirustek = Math.ceil (draha.getVertexCount () / 100);
// 			alert (rychlost + ' ms - ' + draha.getVertexCount () + ' /++' + prirustek);
// 			for (var n = 0; n < draha.getVertexCount () - 1; n = n + prirustek) {
// 				bodyDrahy.push (draha.getVertex (n));
// 			}
// 			var novaDraha = new GPolyline (bodyDrahy, '#0000ff', 2, 0.3);
// 			this.mapa.addOverlay (novaDraha);
 			this.mapa.addOverlay (draha);

			this.cile.shift ();
	
			var objekt = this;
			setTimeout (function () {
				objekt.nactiCestu ();	
			}, 1000);		
		}
		else if (status.code == 620) {
			var objekt = this;
			setTimeout (function () {
				objekt.nactiCestu ();	
			}, 5000);		
		}
	}

	this.nactiCestu = function () {
		if (!this.cile.length)
			return;

		var zBodu = this.stred.lat () + ' ' + this.stred.lng ();
		var doBodu = this.cile[0].lat () + ' ' + this.cile[0].lng ();
		this.aktualniCil = this.pocetCilu - this.cile.length;
		
		var retezec = 'from: ' + zBodu + ' to: ' + doBodu;
		this.cesty.load (retezec, {
			getPolyline : true, 
			getSteps : true
		});
	}
	
	this.inicializujCesty = function () {
		this.cesty = new GDirections();
		var objekt = this;
		GEvent.addListener (this.cesty, "load", function () {
			objekt.zobrazCestu ();
		});
		this.nactiCestu ();
	}

	this.inicializujKruh = function (stred, polomer) {
		this.stred = stred;
		this.polomer = polomer;
		
		var znackaMoznosti = {
			icon : this.polomerIkonaVer,
			draggable : true,
			bouncy : true
		};
		this.polomerZnacka1 = new GMarker (this.poziceNaKruhu (this.stred, 0, this.polomer), znackaMoznosti);
		this.polomerZnacka3 = new GMarker (this.poziceNaKruhu (this.stred, 180, this.polomer), znackaMoznosti);
		this.mapa.addOverlay (this.polomerZnacka1);
		this.mapa.addOverlay (this.polomerZnacka3);

		var znackaMoznosti = {
			icon : this.polomerIkonaHor,
			draggable : true,
			bouncy : true
		};
		this.polomerZnacka2 = new GMarker (this.poziceNaKruhu (this.stred, 90, this.polomer), znackaMoznosti);
		this.polomerZnacka4 = new GMarker (this.poziceNaKruhu (this.stred, 270, this.polomer), znackaMoznosti);
		this.mapa.addOverlay (this.polomerZnacka2);
		this.mapa.addOverlay (this.polomerZnacka4);

		var znackaMoznosti = {
			icon : this.stredKruhuIkona,
			draggable : true,
			bouncy : true
		};
		this.stredKruhuZnacka = new GMarker (this.stred, znackaMoznosti);
		this.mapa.addOverlay (this.stredKruhuZnacka);

		var objekt = this;
		GEvent.addListener (this.polomerZnacka1, "dragend", function () {
			objekt.odesliFormular ();
		});
		GEvent.addListener (this.polomerZnacka1, "drag", function () {
			objekt.obnovKruhZPolomeru (1);
		});
		GEvent.addListener (this.polomerZnacka2, "dragend", function () {
			objekt.odesliFormular ();
		});
		GEvent.addListener (this.polomerZnacka2, "drag", function () {
			objekt.obnovKruhZPolomeru (2);
		});
		GEvent.addListener (this.polomerZnacka3, "dragend", function () {
			objekt.odesliFormular ();
		});
		GEvent.addListener (this.polomerZnacka3, "drag", function () {
			objekt.obnovKruhZPolomeru (3);
		});
		GEvent.addListener (this.polomerZnacka4, "dragend", function () {
			objekt.odesliFormular ();
		});
		GEvent.addListener (this.polomerZnacka4, "drag", function () {
			objekt.obnovKruhZPolomeru (4);
		});
		GEvent.addListener (this.stredKruhuZnacka, "dragend", function () {
			objekt.odesliFormular ();
		});
		GEvent.addListener (this.stredKruhuZnacka, "drag", function () {
			objekt.obnovKruhZeStredu ();
		});
		
		this.nakresliKruh (this.stred, this.polomer);
	}

	this.inicializujStred = function (stred) {
		this.stred = stred;
		
		var znackaMoznosti = {
			icon : this.stredKruhuIkona,
			draggable : true,
			bouncy : true
		};
		this.stredKruhuZnacka = new GMarker (this.stred, znackaMoznosti);
		this.mapa.addOverlay (this.stredKruhuZnacka);

		var objekt = this;
		GEvent.addListener (this.stredKruhuZnacka, "dragend", function () {
			objekt.odesliFormularStred ();
		});
	}

	if (GBrowserIsCompatible ()) {
		//nacteni prvotnich souradnic
		var pocatecniPozice = new GLatLng (49.866316729538674, 15.457763671875);
		this.priblizeni = 6;
		this.cile = new Array ();
		
		this.mapa = new GMap2 (document.getElementById (id));
		this.mapa.setCenter (pocatecniPozice, this.priblizeni);
		this.mapa.addControl (new GLargeMapControl ());
		this.mapa.addMapType (G_PHYSICAL_MAP);
		this.mapa.addControl (new GHierarchicalMapTypeControl ());
		this.mapa.addControl (new GOverviewMapControl ());
		this.mapa.addControl (new GScaleControl ());
		
		this.oblast = new GLatLngBounds ();

		this.zakladniIkona = new GIcon (G_DEFAULT_ICON);
		this.zakladniIkona.shadow = "http://www.portalymest.cz/images/ikonyMapa/shadow50.png";
		this.zakladniIkona.iconSize = new GSize (20, 34);
		this.zakladniIkona.shadowSize = new GSize (37, 34);
		this.zakladniIkona.iconAnchor = new GPoint (9, 34);
		this.zakladniIkona.infoWindowAnchor = new GPoint (9, 2);

		this.stredKruhuIkona = new GIcon (G_DEFAULT_ICON);
		this.stredKruhuIkona.shadow = "http://www.portalymest.cz/images/ikonyMapa/arrowshadow.png";
		this.stredKruhuIkona.image = "http://www.portalymest.cz/images/ikonyMapa/arrow.png";
		this.stredKruhuIkona.iconSize = new GSize (39, 34);
		this.stredKruhuIkona.shadowSize = new GSize (39, 34);
		this.stredKruhuIkona.iconAnchor = new GPoint (11, 34);
		this.stredKruhuIkona.infoWindowAnchor = new GPoint (11, 2);

// 		this.stredKruhuIkona = new GIcon (G_DEFAULT_ICON);
// 		this.stredKruhuIkona.image = "http://www.google.com/mapfiles/centerArrow.png";
// 		this.stredKruhuIkona.iconSize = new GSize (20, 20);
// 		this.stredKruhuIkona.shadowSize = new GSize (0, 0);
// 		this.stredKruhuIkona.iconAnchor = new GPoint (10, 10);
// 		this.stredKruhuIkona.draggable = true;
// 		this.stredKruhuIkona.bouncy = false;

		this.polomerIkonaHor = new GIcon (G_DEFAULT_ICON);
		this.polomerIkonaHor.image = "http://www.portalymest.cz/images/ikonyMapa/resizeArrowHor.png";
		this.polomerIkonaHor.iconSize = new GSize (25, 20);
		this.polomerIkonaHor.shadowSize = new GSize (0, 0);
		this.polomerIkonaHor.iconAnchor = new GPoint (12, 10);

		this.polomerIkonaVer = new GIcon (G_DEFAULT_ICON);
		this.polomerIkonaVer.image = "http://www.portalymest.cz/images/ikonyMapa/resizeArrowVer.png";
		this.polomerIkonaVer.iconSize = new GSize (20, 25);
		this.polomerIkonaVer.shadowSize = new GSize (0, 0);
		this.polomerIkonaVer.iconAnchor = new GPoint (10, 12);
	}
};