百度地图使用折线、多边形覆盖物绘制或编辑行政区域
程序员文章站
2022-07-03 18:12:09
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百度地图开发常用网站
1、百度地图开放平台
http://lbsyun.baidu.com/
2、百度地图 Javascript API
-
JavaScript API v3.0 http://lbsyun.baidu.com/index.php?title=jspopular3.0
-
JavaScript API v2.0 http://lbsyun.baidu.com/index.php?title=jspopular
-
JavaScript API Lite http://lbsyun.baidu.com/index.php?title=jspopularLiteV1
3、JavaScript API v2.0类参考
http://lbsyun.baidu.com/cms/jsapi/reference/jsapi_reference.html
4、百度地图示例DEMO（JavaScript API v2.0）
http://lbsyun.baidu.com/jsdemo.htm#a1_2
5、百度地图 ak 申请：（JavaScript API v2.0）
http://lbsyun.baidu.com/index.php?title=jspopular/guide/getkey
6、开源库（JavaScript API v2.0）：鼠标绘制工具条、热力图、聚合marker、测距工具、自定义覆盖物、自定义信息窗口、路书等功能
http://lbsyun.baidu.com/index.php?title=jspopular/openlibrary
7、百度地图坐标拾取系统
http://api.map.baidu.com/lbsapi/getpoint/index.html
说明
项目中使用 JavaScript API v2.0 版本，当然也可以使用最新版 V3.0。
JavaScript API Lite是移动端浏览器上构建地图应用
百度地图使用折线、多边形覆盖物绘制或编辑行政区域
1、百度地图 ak 申请：（JavaScript API v2.0）
http://lbsyun.baidu.com/index.php?title=jspopular/guide/getkey
2、实现效果图如下：
首先说明一下，这里分别使用折线（左边） 和 多边形覆盖物（右边）绘制 河源市 和 梅州市行政区域。下图中可以看出区别：
这里用的的测试数据行政区域坐标，是通过这篇文章的内容获取的 ：百度地图API获取行政区域边界（省、市、区县）
编辑功能，操作说明：
1、从折线 或 多边形覆盖物中，右键点击编辑区域功能，此时覆盖物变为编辑状态（出现很多小方块及连接线）
2、放大地图，任意拖动小方块即可编辑（调整）区域数据。
3、编辑好数据后，从折线 或 多边形覆盖物中，右键点击保存区域功能，即可得到新的区域坐标数据。
3、网页源码：
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8" />
<title>百度地图使用折线、多边形覆盖物绘制或编辑行政区域</title>
<script type="text/javascript" src="http://api.map.baidu.com/api?v=2.0&ak=你在百度地图开放平台申请的ak"></script>
<!-- 你在百度地图开放平台申请的ak -->
</head>
<body>
<div id="allmap" style="position: absolute; width: 100%; top: 0px; bottom: 0px"></div>
<script type="text/javascript">
//添加鼠标触发事件
function addMarkerClickHandler(content, e) {
var isEditing = false;
e.addEventListener("mousedown", function (e) {
var markerMenua = new BMap.ContextMenu();
var txtMenuItema = [
{
text: "编辑" + content,
callback: function () {
var p = e.target;
if (isEditing == true) {
alert("您当前处于编辑状态，请拖动小方块改变辖区范围或保存辖区！");
return;
} else {
if (p instanceof BMap.Label) {
layer.msg(p.content);
} else if (p instanceof BMap.Circle) {
var tips = "该覆盖物是圆，圆的半径是：" + p.getRadius() + "，圆的中心点坐标是：" + p.getCenter().lng + "," + p.getCenter().lat;
alert(p.content);
} else if (p instanceof BMap.Polygon) {
getpoligon = p;
alert("当前编辑的辖区包含的的坐标个数是：" + p.getPath().length);
p.enableEditing();
isEditing = true;
} else {
getpoligon = p;
p.enableEditing();
isEditing = true;
alert("无法获知该覆盖物类型：" + p.getPath().length);
}
}
}
},
{
text: "保存" + content,
callback: function () {
var strpara = "";
var posiall = [];
if (isEditing == false) {
alert("您还未处于编辑状态，请点击编辑辖区！");
return;
} else {
if (confirm('您确定要保存辖区吗？') == true) {
var strpara = "";
var posiall = [];
posiall = e.target.getPath();
for (var i = 0; i < posiall.length; i++) {
if (i > 0) {
strpara += ";" + posiall[i].lng + "," + posiall[i].lat;
} else {
strpara += posiall[i].lng + "," + posiall[i].lat;
}
}
console.log("------------------------------- 获取当前多边形坐标数据-------------------------------");
console.log("获取当前多边形坐标数据成功，坐标个数为：" + posiall.length);
console.log("坐标数据：" + strpara);
alert("保存成功！测试信息。。。当前覆盖物坐标数： " + posiall.length);
}
}
}
}];
markerMenua.addItem(new BMap.MenuItem(txtMenuItema[0].text,
txtMenuItema[0].callback, 120));
markerMenua.addItem(new BMap.MenuItem(txtMenuItema[1].text,
txtMenuItema[1].callback, 120));
e.target.addContextMenu(markerMenua);
});
}
var map = new BMap.Map("allmap",{ minZoom: 9,maxZoom: 19 });
var point = new BMap.Point(116.128554,24.294562);
var top_left_navigation = new BMap.NavigationControl();
map.addControl(top_left_navigation);// 添加平移缩放控件
map.addControl(new BMap.ScaleControl({ anchor: BMAP_ANCHOR_TOP_LEFT })); // 添加比例尺控件
map.addControl(new BMap.OverviewMapControl()); //添加缩略地图控件
map.enableScrollWheelZoom();//启用滚轮放大缩小
map.centerAndZoom(point,9);
var bmp_type = new BMap.MapTypeControl({ anchor: BMAP_ANCHOR_TOP_RIGHT });
map.addControl(bmp_type);
var styleOptions = {
strokeColor: "red",//边线颜色。
fillColor: "red",//填充颜色。当参数为空时，圆形将没有填充效果。
strokeWeight: 3,//边线的宽度，以像素为单位。
strokeOpacity: 0.8,//边线透明度，取值范围0 - 1。
fillOpacity: 0.6,//填充的透明度，取值范围0 - 1。
strokeStyle: 'solid' //边线的样式，solid或dashed。
}
map.disableDoubleClickZoom();
//下面分别使用折线 和 多边形覆盖物绘制 河源市 和 梅州市行政区域。
//1、使用折线绘制 河源市 行政区域。使用 Polyline 对象
//设置河源市标签名 及 位置（经纬度）
var polylineLabel = new BMap.Label("河源市",{ position: new BMap.Point(114.706735,23.750464),offset: new BMap.Size(-22,-12) });
polylineLabel.setStyle({ color: "blue",fontSize: "15px",border: "none",background: "none",fontWeight: "bold" });
//河源市点坐标（字符串形式）
var heyuanAreaPoints = "115.32089,23.764086;115.349472,23.764277;115.358846,23.761385;115.368068,23.763835;115.385552,23.779572;115.395748,23.780675;115.405239,23.775758;115.399331,23.76659;115.401283,23.755541;115.392862,23.744673;115.401303,23.737446;115.404127,23.730224;115.412417,23.730294;115.41859,23.726535;115.418724,23.718734;115.413684,23.711255;115.416326,23.706331;115.435126,23.702257;115.427348,23.712136;115.43321,23.718631;115.443785,23.719372;115.465118,23.713471;115.470482,23.708752;115.466622,23.696867;115.458638,23.687915;115.45983,23.683129;115.450632,23.658151;115.439705,23.645297;115.437357,23.620146;115.432101,23.612337;115.435967,23.606049;115.433956,23.590055;115.442535,23.578221;115.441832,23.569657;115.455414,23.56016;115.44846,23.549404;115.443676,23.547736;115.437251,23.528512;115.444732,23.513422;115.446265,23.5016;115.431729,23.496876;115.42771,23.4879;115.431199,23.485436;115.429265,23.47762;115.438723,23.472115;115.442561,23.462377;115.441273,23.43705;115.460596,23.423626;115.459443,23.412975;115.466181,23.40386;115.463921,23.388092;115.470492,23.382014;115.480838,23.379621;115.476217,23.374415;115.477209,23.349614;115.481663,23.338435;115.478499,23.333388;115.483228,23.329437;115.494822,23.328378;115.496424,23.323011;115.478552,23.317948;115.464662,23.318525;115.466828,23.308557;115.45822,23.298662;115.464159,23.292619;115.452694,23.28637;115.430974,23.284203;115.429897,23.280955;115.436472,23.277922;115.422638,23.25841;115.424054,23.249469;115.408591,23.256069;115.407616,23.275967;115.403075,23.277604;115.406578,23.281785;115.401708,23.291644;115.389528,23.295568;115.381494,23.302601;115.383007,23.30705;115.371569,23.30512;115.368272,23.310345;115.353474,23.313989;115.350785,23.321948;115.339916,23.327783;115.321024,23.31452;115.315428,23.313965;115.314508,23.327866;115.309056,23.33164;115.312176,23.348317;115.308588,23.355111;115.312964,23.365256;115.300989,23.362386;115.270422,23.388843;115.266639,23.385169;115.256581,23.385823;115.245112,23.381296;115.24045,23.384267;115.240383,23.390389;115.231114,23.38712;115.227189,23.389364;115.211486,23.382379;115.201987,23.385357;115.195569,23.379408;115.190957,23.38411;115.182122,23.385397;115.173978,23.381459;115.174509,23.373202;115.153298,23.364571;115.127816,23.37225;115.120207,23.364544;115.105712,23.360628;115.092752,23.34877;115.082543,23.349365;115.075398,23.336182;115.066422,23.335865;115.064902,23.328419;115.059016,23.325167;115.039097,23.333097;115.012767,23.33655;115.01316,23.328537;115.002932,23.318593;115.0055,23.313842;114.994638,23.299439;114.984129,23.299545;114.977548,23.307745;114.982755,23.321873;114.975846,23.318462;114.971708,23.325956;114.967248,23.327195;114.967397,23.331753;114.953986,23.334348;114.959802,23.347729;114.948932,23.355298;114.929298,23.342864;114.919822,23.342852;114.921422,23.32082;114.925062,23.31882;114.917892,23.301025;114.919559,23.281985;114.901033,23.25957;114.904818,23.250938;114.886005,23.245766;114.88248,23.228975;114.866101,23.216248;114.867083,23.206886;114.873056,23.202991;114.874994,23.193714;114.863157,23.183164;114.863971,23.179056;114.857557,23.171192;114.851141,23.17028;114.848579,23.174695;114.840234,23.174998;114.828983,23.19411;114.809875,23.205074;114.80867,23.210351;114.792309,23.212241;114.79294,23.223564;114.78488,23.231494;114.788464,23.234814;114.788008,23.243221;114.794341,23.246393;114.78761,23.266072;114.789755,23.270713;114.781736,23.272248;114.778818,23.276472;114.780509,23.281397;114.774832,23.280164;114.770316,23.285539;114.783569,23.307765;114.778631,23.310081;114.778049,23.319704;114.770645,23.322346;114.763606,23.320724;114.757115,23.334902;114.748651,23.336847;114.740885,23.333854;114.738476,23.341481;114.730465,23.334577;114.730393,23.34534;114.725845,23.345006;114.719179,23.354773;114.723486,23.36507;114.701121,23.372555;114.708367,23.377616;114.70394,23.381989;114.703481,23.395236;114.696626,23.400145;114.710641,23.411828;114.682248,23.418979;114.670303,23.415345;114.664652,23.408592;114.657196,23.417047;114.653636,23.409249;114.655505,23.402274;114.646938,23.404564;114.645674,23.409078;114.639169,23.409708;114.635529,23.417511;114.645977,23.421271;114.672755,23.45371;114.685536,23.462719;114.704837,23.468697;114.705853,23.474829;114.694461,23.488227;114.689528,23.500632;114.691178,23.512147;114.705296,23.528522;114.702504,23.536917;114.681485,23.534945;114.670975,23.538419;114.660075,23.569633;114.647431,23.565967;114.64066,23.554779;114.627629,23.555106;114.626725,23.540972;114.63136,23.540146;114.623639,23.536068;114.611696,23.544344;114.615908,23.551732;114.608733,23.559376;114.5914,23.570129;114.58488,23.568434;114.578897,23.571714;114.573682,23.577374;114.573227,23.586225;114.561124,23.595887;114.56298,23.602861;114.55729,23.611249;114.56191,23.616366;114.563374,23.627671;114.548549,23.642756;114.545842,23.656676;114.536395,23.673712;114.527407,23.674113;114.519866,23.695514;114.503621,23.700592;114.50066,23.704701;114.482365,23.70887;114.448007,23.692827;114.437702,23.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var heyuanPointArray = new Array();//保存坐标数据
var heyuanAreaPointsDataArray = heyuanAreaPoints.split(";");
for (var i = 0; i < heyuanAreaPointsDataArray.length; i++){
var pointArray = heyuanAreaPointsDataArray[i].split(",");
var dataPoint = new BMap.Point(parseFloat(pointArray[0]),parseFloat(pointArray[1]));
heyuanPointArray.push(dataPoint);
}
var polyline = new BMap.Polyline(heyuanPointArray,{
strokeWeight: 3,
strokeColor: "red",
strokeOpacity: 0.8
});
polyline.disableMassClear();// 禁止清除操作
map.addOverlay(polyline); // 绘制曲线
polylineLabel.disableMassClear();// 禁止清除操作
map.addOverlay(polylineLabel);// 添加标签
//添加鼠标触发事件
addMarkerClickHandler("河源市", polyline);
//2、使用多边形覆盖物绘制 梅州市 行政区域。使用 Polygon 对象
//设置梅州市标签名 及 位置（经纬度）
var polygonLabel = new BMap.Label("梅州市",{ position: new BMap.Point(116.128554,24.294562),offset: new BMap.Size(-22,-12) });
polygonLabel.setStyle({ color: "blue",fontSize: "15px",border: "none",background: "none",fontWeight: "bold" });
//梅州市点坐标（字符串形式）
var meizhouAreaPoints = 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var meizhouPointArray = new Array();//保存坐标数据
var meizhouAreaPointsDataArray = meizhouAreaPoints.split(";");
for (var i = 0; i < meizhouAreaPointsDataArray.length; i++){
var pointArray = meizhouAreaPointsDataArray[i].split(",");
var dataPoint = new BMap.Point(parseFloat(pointArray[0]),parseFloat(pointArray[1]));
meizhouPointArray.push(dataPoint);
}
var polygon = new BMap.Polygon(meizhouPointArray,{
strokeWeight: 0.5,
strokeColor: "blue",
fillColor: "blue"
}); //建立多边形覆盖物
polygon.setFillOpacity(0.3);
polygon.disableMassClear();// 禁止清除操作
map.addOverlay(polygon); // 绘制多边形覆盖物
polygonLabel.disableMassClear();// 禁止清除操作
map.addOverlay(polygonLabel);// 添加标签
//添加鼠标触发事件
addMarkerClickHandler("梅州市", polygon);
</script>
</body>
</html>