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google map 两中方式绘制可编辑多边形并获取节点坐标信息

2013-11-13 10:33 447 查看

在制作谷歌地图下载器时碰到导入行政区边界shp 图绘制多边形与通过工具绘制多边形来确定下载范围，在这记录下多边形两种绘制方式。

<!DOCTYPE html>
<html>
<head>
<title>Drawing tools</title>
<meta name="viewport" content="initial-scale=1.0, user-scalable=no">
<meta charset="utf-8">
<style>
html, body, #map-canvas {
height: 100%;
margin: 0px;
padding: 0px
}
</style>
<script src="http://maps.googleapis.com/maps/api/js?v=3.exp&sensor=false&libraries=drawing"></script>
<script>
//初始化
function initialize() {
//初始化地图参数
var mapOptions = {

center: new google.maps.LatLng(24.886436490787712, -70.2685546875),
zoom: 5,
mapTypeId: google.maps.MapTypeId.ROADMAP
};
//div显示地图
var map = new google.maps.Map(document.getElementById('map-canvas'),
mapOptions);
//绘画工具 设置
var drawingManager = new google.maps.drawing.DrawingManager({
drawingMode: google.maps.drawing.OverlayType.MARKER,
drawingControl: true,
drawingControlOptions: {
position: google.maps.ControlPosition.TOP_CENTER,
drawingModes: [
google.maps.drawing.OverlayType.MARKER,
google.maps.drawing.OverlayType.CIRCLE,
google.maps.drawing.OverlayType.POLYGON,
google.maps.drawing.OverlayType.POLYLINE,
google.maps.drawing.OverlayType.RECTANGLE
]
},
markerOptions: {
icon: 'images/beachflag.png'
},
//设置图形显示样式
circleOptions: {
fillColor: '#ffff00',
fillOpacity: 1,
strokeWeight: 5,
clickable: false,
editable: true,
zIndex: 1
},

polygonOptions: {
strokeColor: "#FF0000",
strokeOpacity: 0.8,
strokeWeight: 2,
fillColor: "#FF0000",
fillOpacity: 0.35,
editable: true,
}
});
drawingManager.setMap(map);
drawingPolygon(map);
//注册 多边形 绘制完成事件
google.maps.event.addListener(drawingManager, 'polygoncomplete', function(polygon) {
var array= polygon.getPath().getArray();
showLonLat(array);
});

//循环显示 经纬度
function showLonLat( arr){
for(var i=0; i<arr.length;i++){
alert(arr[i]);
};
}

/*google.maps.event.addListener(drawingManager, 'overlaycomplete', function(event) {
if (event.type == google.maps.drawing.OverlayType.CIRCLE) {
var radius = event.overlay.getRadius();
}
});*/
}

//根据以知 点绘制图形
function drawingPolygon(map) {
var triangleCoords = [
new google.maps.LatLng(25.774252, -80.190262),
new google.maps.LatLng(18.466465, -66.118292),
new google.maps.LatLng(32.321384, -64.75737),
new google.maps.LatLng(25.774252, -80.190262)
];

// Construct the polygon
// Note that we don't specify an array or arrays, but instead just
// a simple array of LatLngs in the paths property
bermudaTriangle = new google.maps.Polygon({
paths: triangleCoords,
strokeColor: "#FF0000",
strokeOpacity: 0.8,
strokeWeight: 2,
fillColor: "#FF0000",
fillOpacity: 0.35,
editable: true,
});

bermudaTriangle.setMap(map);
}

google.maps.event.addDomListener(window, 'load', initialize);

</script>
</head>
<body>
<div id="map-canvas"></div>
<div id="bottom"></div>
</body>
</html>

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标签： GIS 谷歌地图 map

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google map 两中方式 绘制可编辑多边形 并获取节点坐标信息

google map 两中方式绘制可编辑多边形并获取节点坐标信息