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plot-radar.js
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plot-radar.js
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function getAngle(x, y){
var getAtan = Math.atan2(x, y);
var ang = ~~(-getAtan/(Math.PI/180) + 180);
return ang;
}
$(function() {
var radar_size = null, posx = null, posy = null;
//based on the device its being viewed on, set the rader width or height to be the same as the screen width, then center its position
if(screen.width > screen.height){
radar_size = screen.height - 100; //width and height same value
}
else{
radar_size = screen.width - 100;
}
posLeft = (screen.width - radar_size) / 2;
posTop = 10; //(screen.height - radar_size) / 2;
var beam = $('#beam'),
radar = $('#radar'),
rings = $('.rings'),
deg = 0,
radius = radar_size / 2,
circumference = 2 * Math.PI * radius;
//radar.css({height: radar_size+"px", width: radar_size+"px", top: posTop+"px", left: posLeft+"px"});
radar.css({height: radar_size+"px", width: radar_size+"px"});
rings.css({height: radar_size-5+"px", width: radar_size-5+"px"});
beam.css({height: radar_size-3+"px", width: radar_size-3+"px"});
$(".panels").css({width: radius+"px", height: radius+"px"});
$("#panel1").css({left: 0, top: 0, borderRight: "solid 3px #004000", borderBottom: "solid 3px #004000"});
$("#panel2").css({left: radius+"px", top: 0, borderLeft: "solid 3px #004000", borderBottom: "solid 3px #004000"});
$("#panel3").css({left: 0, top: radius+"px", borderRight: "solid 3px #004000", borderTop: "solid 3px #004000"});
$("#panel4").css({left: radius+"px", top: radius+"px", borderLeft: "solid 3px #004000", borderTop: "solid 3px #004000"});
//main focal point which is the center of the radar
var lat = 51.513742;
var lon = -0.08862;
//http://www.doogal.co.uk/LatLong.php
//other points
var coords = [[51.513718, -0.088481],
[51.513718, -0.088567],
[51.513732, -0.088631],
[51.513812, -0.088738],
[51.513745, -0.088738],
[51.514052, -0.088953],
[51.514106, -0.088803],
[51.514052, -0.089124],
[51.514079, -0.088953],
[51.514186, -0.088803],
[51.514159, -0.088845],
[51.514146, -0.088695],
[51.514252, -0.08876],
[51.514319, -0.088845],
[51.514319, -0.088931],
[51.514319, -0.089017],
[51.514279, -0.08906],
[51.514226, -0.089039],
[51.514172, -0.089082],
[51.514346, -0.08921]];
var dist = new Distance();
dist.calculate(lat,lon,coords);
for(var grp=0; grp<dist.values.length; grp++){
if(dist.values[grp].length < 1) continue;
for(var ix=0; ix<dist.values[grp].length; ix++){
var a = dist.values[grp][ix][0],
d = dist.values[grp][ix][1],
x = dist.values[grp][ix][2],
y = dist.values[grp][ix][3];
var getDeg = "";
var obj = $("<div title='"+a+"deg, "+x+", "+y+"'></div>").css({
background: 'url(user.png) no-repeat center',
width: '30px',
height: '30px',
position: 'absolute',
padding: '3px',
boxShadow: '0 0 10px 5px rgba(100,255,0,0.5)',
borderRadius: '50%',
outline: '0',
zIndex: 555,
opacity: '0.2'
});
if(grp == 0){
ax = (radius - x) - radius;
ay = (radius - y) - radius;
getDeg = getAngle(ax, ay);
obj.css({bottom: y, right: x}).attr('data-atDeg', getDeg);
$("#panel1").append(obj);
}
else if(grp == 1){
ax = (radius + x) - radius;
ay = (radius - y) - radius;
getDeg = getAngle(ax, ay);
obj.css({bottom: y, left: x}).attr('data-atDeg', getDeg);
$("#panel2").append(obj);
}
else if(grp == 2){
ax = (radius - x) - radius;
ay = (radius + y) - radius;
getDeg = getAngle(ax, ay);
obj.css({top: y, right: x}).attr('data-atDeg', getDeg);
$("#panel3").append(obj);
}
else if(grp == 3){
ax = (radius + x) - radius;
ay = (radius + y) - radius;
getDeg = getAngle(ax, ay);
obj.css({top: y, left: x}).attr('data-atDeg', getDeg);
$("#panel4").append(obj);
}
}
}
(function rotate() {
beam.css({transform: 'rotate('+ deg +'deg)'});
$('[data-atDeg='+deg+']').stop().fadeTo(0,1).fadeTo(1700,0.2);
// LOOP
setTimeout(function() {
deg = ++deg%360;
rotate();
}, 25);
})();
});