<!doctype html>
<html>
<head>
<title>World Clickaround - RJM Programming - April, 2015</title>
<link href='//www.rjmprogramming.com.au/PHP/emboss_h1.css' rel='stylesheet' type='text/css'>
<script type='text/javascript'>

var ie = 11;
var mode = 1;
var amode = 1;
var elem;
var elemLeft = 0;
var elemTop = 0;
var context;
var elements = [];
var img;
var london_x = 408.0, london_y = 255.0; // vs hobart 756,512
var londonx = 408.0, londony = 255.0; // hobart 42.8806 S, 147.3250 E
var x, y;
var clickno = 0;
var ourlat, ourlong;
var url = "http://www.rjmprogramming.com.au/PHP/Map/map.php?title=London&label=['Lat',&value='Lon','Name']&data=,[51.5072,-0.1275,~London~]";

var retx = 0.0, rety = 0.0;

function prereturnxy(inlatinlongthis) {
//alert(inlatinlongthis.title);
var prestuff = inlatinlongthis.title.split(",");
if (prestuff.length == 2) {
//alert(prestuff[0]);
return returnxy(prestuff[0], prestuff[1]);
}
return "0.0,0.0";
}

function returnxy(inlat, inlong) {
var retval="0.0,0.0";

var ourx = eval((londonx + eval(((inlong) - (0.0)) * ((348.0 * (londonx / london_x))) / (147.325))));
var oury = eval((londony + eval(((inlat) - (51.5)) * ((257.0 * (londony / london_y))) / (-94.3806))));

retx = ourx;
rety = oury;

retval = ourx + "," + oury;

if (context != null) context.fillStyle = '#0000ff';
if (context != null) context.fillRect(retx, rety, 5, 5);

return retval;
}

function ask() {
var huh=prompt("If you've zoomed your window, please answer Y and then click on London to scale. Then click away at places where you want to go.", "");
if (huh == null) {
clickno = 1;
//document.getElementById('mypiframe').src = "intair.php?plot=y";
} else if (huh == "y" || huh == "Y") {
clickno = 0;
} else {
clickno = 1;
//document.getElementById('mypiframe').src = "intair.php?plot=y";
}
}


window.onload = function() {

ie = (function(){ // thanks to http://stackoverflow.com/questions/5574842/best-way-to-check-for-ie-less-than-9-in-javascript-without-library

var undef,
v = 3,
div = document.createElement('div'),
all = div.getElementsByTagName('i');

while (
div.innerHTML = '<!--[if gt IE ' + (++v) + ']><i></i><![endif]-->',
all[0]
);

return v > 4 ? v : undef;

}());

img = document.getElementById("world");
if (ie < 9) {
document.getElementById('canvaselement').style.display = 'none';
document.getElementById('others').style.display = 'none';
context = null;
document.getElementById('world').style.display = 'block';
elem = document.getElementById('world');
// Add event listener for `click` events.
elem.attachEvent('onclick', function(event) {
if (event.clientX || event.clientY) {
x = event.clientX - elemLeft;
y = event.clientY - elemTop;
} else {
x = event.pageX - elemLeft;
y = event.pageY - elemTop;
}
//alert(x + " " + y);
if (clickno == 0) {
londonx = x;
londony = y;
ourlong = eval(0.0 + (x - londonx) / (348.0 * (londonx / london_x)) * 147.325);
ourlat = eval(51.5 + (y - londony) / (257.0 * (londony / london_y)) * (-94.3806));
} else {
ourlong = eval(0.0 + (x - londonx) / (348.0 * (londonx / london_x)) * 147.325);
ourlat = eval(51.5 + (y - londony) / (257.0 * (londony / london_y)) * (-94.3806));
}

elements.push({
colour: '#ff0000',
width: 5,
height: 5,
top: y,
left: x
});

clickno = clickno + 1;
document.getElementById('myiframe').src = "http://www.rjmprogramming.com.au/PHP/Map/map.php?title=Your%20Place%20and%20Airports&label=['Lat',&value='Lon','Name']&data=,[" + ourlat.toFixed(5).replace(/0+$/, "") + "," + ourlong.toFixed(5).replace(/0+$/, "") + ",~Your%20Place~]"

document.getElementById('mypiframe').src = "intair.php?num=4&lat=" + ourlat + "&long=" + ourlong;


});


} else {
elem = document.getElementById('canvaselement');
context = elem.getContext("2d");
context.drawImage(img,0,0);
elemLeft = elem.offsetLeft;
elemTop = elem.offsetTop;
// Add event listener for `click` events.
elem.addEventListener('click', function(event) {
if (event.pageX || event.pageY) {
x = event.pageX - elemLeft;
y = event.pageY - elemTop;
} else {
x = event.clientX - elemLeft;
y = event.clientY - elemTop;
}
//alert(x + " " + y);
if (clickno == 0) {
londonx = x;
londony = y;
ourlong = eval(0.0 + (x - londonx) / (348.0 * (londonx / london_x)) * 147.325);
ourlat = eval(51.5 + (y - londony) / (257.0 * (londony / london_y)) * (-94.3806));
} else {
ourlong = eval(0.0 + (x - londonx) / (348.0 * (londonx / london_x)) * 147.325);
ourlat = eval(51.5 + (y - londony) / (257.0 * (londony / london_y)) * (-94.3806));
}

elements.push({
colour: '#ff0000',
width: 5,
height: 5,
top: y,
left: x
});

clickno = clickno + 1;

// Collision detection between clicked offset and element.
elements.forEach(function(element) {
//alert('clicked Element at ' + ourlong + ' ' + ourlat + ' ' + element.left + ',' + element.top + ' with width=' + element.width + ' and height=' + element.height + ' and colour=' + element.colour);
if (context != null) context.fillStyle = element.colour;
if (context != null) context.fillRect(element.left, element.top, element.width, element.height);
document.getElementById('myiframe').src = "http://www.rjmprogramming.com.au/PHP/Map/map.php?title=Your%20Place%20and%20Airports&label=['Lat',&value='Lon','Name']&data=,[" + ourlat.toFixed(5).replace(/0+$/, "") + "," + ourlong.toFixed(5).replace(/0+$/, "") + ",~Your%20Place~]"
});

document.getElementById('mypiframe').src = "intair.php?num=4&lat=" + ourlat + "&long=" + ourlong;




});
}

setTimeout(ask, 1000);


}


</script>
</head>
<body>
<table><tr><td>
<canvas id="canvaselement" width=850 height=600 style="position: absolute; top:0; left:0; "></canvas></td><td>
<h1 style="position: absolute; top:0; left:860px; " align='center'>World Clickaround <select id='others' onchange=" location.href=this.value + '.htm';"><option value='world'> ... or ...</option><option value='australia'>Australia</option><option value='brazil'>Brazil</option><option value='china'>China</option><option value='germany'>Germany</option><option value='india'>India</option><option value='ireland'>Ireland</option><option value='nigeria'>Nigeria</option><option value='united_states'>United States</option><option value='world'>World</option></select></h1><br>
<iframe style="position: absolute; top:140px; left:860px; " id="myiframe" width=320 height=460 src="http://www.rjmprogramming.com.au/PHP/Map/map.php?title=London&label=['Lat',&value='Lon','Name']&data=,[51.5072,-0.1275,~London~]"></iframe>
<a id='mya' style="position: absolute; top:1000px; left:860px; " href='#' title='-42.8806,147.3250' onclick='prereturnxy(this);' style='display:none;'> click</a><iframe id='mypiframe' style='display:none;' src='intair.php' title='International Airport plot'></iframe>
</td></tr></table><img id="world" src="world.jpg" style="display:none;position: absolute; top:0; left:0; " />
</body>
</html>