google maps v3 fill in circle completely
I created a map which allows users to draw a circle around a point with a specified radius. For some reason the circle does not get completely filled in and this is especially noticeable when the map is more zoomed in. Perhaps someone has a solution to fill the circle completely even when viewed at at a higher zoom level
See code below
<!DOCTYPE html>
<html>
<head>
<meta name="viewport" content="initial-scale=1.0, user-scalable=no" />
<style type="text/css">
html { height: 100% }
body { height: 100%; margin: 0px; padding: 0px }
#map_canvas { height: 100% }
</style>
<script type="text/javascript"
src="http://maps.google.com/maps/api/js?sensor=false">
</script>
</script>
<script type= "text/javascript">
var geocoder;
var map;
var count=0;
//Store points in array
var points = [];
function initialize() {
geocoder = new google.maps.Geocoder();
var latlng = new google.maps.LatLng(-34.397, 150.644);
var myOptions = {
zoom: 3,
center: latlng,
mapTypeId: google.maps.MapTypeId.ROADMAP
}
map = new google.maps.Map(document.getElementById("map_canvas"),myOptions);
}
function codeAddress() {
var address = document.getElementById("address").value;
geocoder.geocode( { 'address': address}, function(results, status) {
if (status == google.maps.GeocoderStatus.OK) {
map.setCenter(results[0].geometry.location);
var marker = new google.maps.Marker({
map: map,
position: results[0].geometry.location
});
}
else {
alert("Geocode was not successful for the following reason: " + status);
}
});
}
function plusCount(){
if (count==2){
count=0;
}
else{
count=count +1;
}
}
function drawCircle() {
var address=document.getElementById("address").value;
var radius=document.getElementById("radius").value;
var latitude=40;
var longitude=0;
geocoder.geocode( { 'address': address}, function(results, status){
if (status==google.maps.GeocoderStatus.OK){
latlng=(results[0].geometry.location);
latitude=latlng.lat();
longitude=latlng.lng();
alert(latitude);
alert(longitude);
alert (radius);
}
else{
alert("Geocode was not successful for the following reason: " + status);
}
});
//Degrees to radians
var d2r = Math.PI / 180;
alert("calc d2r " + d2r);
// Radians to degrees
var r2d = 180 / Math.PI;
alert("calc r2d " + r2d);
// Earth radius is 3,963 miles
var cLat = (radius / 3963) * r2d;
alert("calc cLat " + cLat);
var cLng = cLat / Math.cos(latitude * d2r);
alert("calc cLng " + cLng);
// Calculate the points
// Work around 360 points on circle
for (var i=0; i < 360; i++) {
var theta = Math.PI * (i/16);
// Calculate next X point
circleY = longitude + (cLng * Math.cos(theta));
// Calculate next Y point
circleX = latitude + (cLat * Math.sin(theta));
// Add point to array
points.push(new google.maps.LatLng(circleX, circleY));
};
alert("completed loop");
var colors=["#CD0000","#2E6444","#003F87" ];
var Polyline_Path = new google.maps.Polyline({
path: points,
strokeColor: colors[count],
// color of the outline of the polyline
strokeOpacity: 1,
// between 0.0 and 1.0
strokeWeight: 1,
// The stroke width in pixels
fillColor: colors[count],
fillOpacity: .5
});
P开发者_运维知识库olyline_Path.setMap(map);
}
function clearMap(){
if(points){
for( i in points){
points[i].setMap(null);
}
points.length=0;
}}
</script>
</head>
<body onload="initialize()">
<div id="map_canvas" style="width:500px; height:460px;
-moz-outline-radius:20px; -moz-box-sizing:padding-box; -moz-outline- style:solid ;-moz-outline-color:#9FB6CD;
- moz-outline-width:10px;"></div>
<div>
Zip Code: <input id="address" type="textbox" value="">
Radius:<input id="radius" type="textbox" value="">
<input type="button" value="Find" onclick="codeAddress() ">
<input type="button" value="Draw Radius" onclick= "drawCircle() ; plusCount()">
<input type="button" value="Reset" onclick= "clearMap()">
</div>
</body>
It looks like you are drawing the circle manually, but you could use the google.maps.Circle which works for me and fills the circle entirely. Here is a snippet I use in my application, which works also in maximum zoom level:
var circ = new google.maps.Circle({
'center':lc,
'clickable':false,
'fillColor':"#00FFFF",
'fillOpacity':0.2,
'map':currentmap,
'radius':75,
'strokeColor':'#0000A0',
'strokeOpacity':'0.5'
});
lc is my center point, currentmap is the map div
This method works for me
var options = {
strokeColor: #CD0000,
strokeOpacity: 0.8,
strokeWeight: 2,
fillColor: #2E6444,
fillOpacity: 0.5,
map: map,
center: latlng,
radius: parseInt(radius)
};
var circle = new google.maps.Circle(options);
var drawInnerZone=
{
strokeColor: "#61A0A8",
strokeOpacity: 0.2,
strokeWeight: 1,
fillColor: "#61A0A8",
fillOpacity: 0.8,
map: map,
center: NearMatches['InnerZone'].center, //Latlng
radius: NearMatches['InnerZone'].Distance //radius
};
MatchZone1 = new google.maps.Circle(drawInnerZone);
it works for me..
the answer for richie work correctly on my project
function searchLocations() {
var image='image/male.png'
var a = document.getElementById("radiusSelect").value;
var address = document.getElementById("addressInput").value;
var geocoder = new google.maps.Geocoder();
geocoder.geocode({'address': address}, function(results, status) {
if (status == google.maps.GeocoderStatus.OK) {
map.setCenter(results[0].geometry.location);
var marker = new google.maps.Marker({
map: map,
position: results[0].geometry.location,
icon: image
});
var circle = new google.maps.Circle({
map: map,
radius: parseInt(a), // 10 miles in metres
fillColor: '#AA0000'
});
circle.bindTo('center', marker, 'position');
searchLocationsNear(results[0].geometry.location);
}
else {
alert(address + ' not found');
}
});
}
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