在标记和定点之间画线 - Google Maps API v3 [英] draw line between marker and fixed point - Google Maps API v3
问题描述
如何在标记和定点之间绘制线条 - Google Maps API v3
how to draw line between marker and fixed point - Google Maps API v3
我使用该代码在两个固定点
之间画线，使用google api v3标记
I used that code to draw a line between 2 fixed points and put a marker using google api v3
如何替换标记位置 2个固定点之一？
how can i replace the marker position instead of one of the 2 fixed points ?
<!DOCTYPE html>
<html>
<head>
<script
src="http://maps.googleapis.com/maps/api/js?key=AIzaSyCwID2UsBJvwVKEMx_U53brmIC8EOLsBFo&sensor=false">
</script>
<script>
function initialize()
{
var x=new google.maps.LatLng(52.395715,4.888916);
var mapProp = {
center:x,
zoom:4,
mapTypeId:google.maps.MapTypeId.ROADMAP
};
var map=new google.maps.Map(document.getElementById("googleMap"),mapProp);
google.maps.event.addListener(map, "mousemove", function(pt) {
document.getElementById("latlgn").innerHTML = pt.latLng;
});
var marker = new google.maps.Marker({
draggable: true,
position: x,
map: map,
title: "Your location"
});
google.maps.event.addListener(marker, 'dragend', function (event) {
document.getElementById("latbox").value = this.getPosition().lat();
document.getElementById("lngbox").value = this.getPosition().lng();
});
var lat = "80";
var lng = "80";
var stavanger=new google.maps.LatLng(lat,lng);
var london=new google.maps.LatLng(51.508742,-0.120850);
var myTrip=[stavanger,london];
var flightPath=new google.maps.Polyline({
path:myTrip,
strokeColor:"#0000FF",
strokeOpacity:0.9,
strokeWeight:2
});
flightPath.setMap(map);
google.maps.event.addDomListener(window, 'load', initialize);
}
</script>
</head>
<div id="latlong">
<p>Latitude: <input size="20" type="text" id="latbox" name="lat" ></p>
<p>Longitude: <input size="20" type="text" id="lngbox" name="lng" ></p>
</div>
<body onLoad="initialize()">
<div id="googleMap" style="width:500px;height:380px;"></div>
<div id="latlgn"></div>
</body>
</html>
推荐答案
设置 myTrip -variable to
set the myTrip-variable to
[stavanger,marker.getPosition()]
这将最初在stavanger和标记位置之间画一条线。
This will initially draw a line between stavanger and the markers position.
标记被移动时更新的行，在marker.dragend的回调中使用PolyLine（flightPath）的setPath-method
To keep the line updated when the marker has been moved, use the setPath-method of the PolyLine(flightPath) inside the callback of marker.dragend
google.maps.event.addListener(marker, 'dragend', function (event) {
document.getElementById("latbox").value = this.getPosition().lat();
document.getElementById("lngbox").value = this.getPosition().lng();
flightPath.setPath([flightPath.getPath().getAt(0),
new google.maps.LatLng(this.getPosition().lat(),
this.getPosition().lng())]);
});
根据要求，修改设置line to the center：
As requested, modifications to set an end of the line to the center:
var myTrip=[stavanger,map.getCenter()];
google.maps.event.addListener(map, 'center_changed', function (event) {
flightPath.setPath([flightPath.getPath().getAt(0),this.getCenter()])
});
这篇关于在标记和定点之间画线 - Google Maps API v3的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！
