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| <!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Title</title>
<link rel="stylesheet" type="text/css" href="http://120.77.215.143:6012/arcgis_js_api/library/3.21/3.21/dijit/themes/tundra/tundra.css"/>
<link rel="stylesheet" type="text/css" href="http://120.77.215.143:6012/arcgis_js_api/library/3.21/3.21/esri/css/esri.css"/>
<script type="text/javascript" src="http://120.77.215.143:6012/arcgis_js_api/library/3.21/3.21/init.js"></script>
<script src="https://cdn.bootcss.com/jquery/3.3.1/jquery.min.js"></script>
</head>
<body>
<div id="map" style="height: 700px;width: 100%"></div>
<button id="JSarea">测量面积</button>
<button id="JSline">测量距离</button>
<button id="JSclear">清除</button>
</body>
<script>
require([ "esri/map","extLayers/gaodeLayer","esri/layers/GraphicsLayer"
],function (Map,gaodeLayer,GraphicsLayer) {
var map=new Map("map",{
logo:false,
center: [101.778112, 36.617042],
zoom:13
});
var gaodelayer=new gaodeLayer();
map.addLayer(gaodelayer);
var disFun =false;
var areaFun = false;
var inputPoints = [];
var totleDistance = 0.0;
require(["esri/toolbars/draw",
"esri/symbols/SimpleLineSymbol","esri/symbols/SimpleFillSymbol",
"esri/Color","esri/layers/GraphicsLayer","esri/graphic",
"esri/symbols/Font", "esri/symbols/TextSymbol", "esri/symbols/SimpleMarkerSymbol",
"esri/tasks/LengthsParameters", "esri/tasks/GeometryService","esri/geometry/Polyline",
"esri/tasks/AreasAndLengthsParameters","esri/geometry/Point"],
function (Draw,SimpleLineSymbol,SimpleFillSymbol,Color,GraphicsLayer,
Graphic,Font,TextSymbol,SimpleMarkerSymbol,LengthsParameters,GeometryService,
Polyline,AreasAndLengthsParameters,Point) {
var measureLayer=new GraphicsLayer();
map.addLayer(measureLayer);
var toolbar = new Draw(map);
var startFont = new Font('12px').setWeight(Font.WEIGHT_BOLD);
var makerSymbol=new SimpleMarkerSymbol({
"color": [27,188,155,255],
"size": 7,
"type": "esriSMS",
"style": "esriSMSCircle",
"outline": {
"color": [52,73,94,255],
"width": 2,
"type": "esriSLS",
"style": "esriSLSSolid"
}
});
var geometryService =new GeometryService("http://120.77.215.143:6080/arcgis/rest/services/Utilities/Geometry/GeometryServer");
$("#JSarea").on("click",function () {
areaFun=true;
disFun=false;
toolbar.activate(Draw.POLYGON);
});
$("#JSline").on("click",function () {
disFun=true;
areaFun=false;
toolbar.activate(Draw.POLYLINE);
});
$("#JSclear").on("click",function () {
clearAction();
});
map.on("click",function (evt) {
if(disFun){
inputPoints.push(evt.mapPoint);
var textSymbol;
if(inputPoints.length ===1){
textSymbol = new TextSymbol("起点",startFont,new Color([204,102,51]));
textSymbol.setOffset(0,-20);
measureLayer.add(new Graphic(evt.mapPoint,textSymbol));
}
if(inputPoints.length>=2){
var lengthParams = new LengthsParameters();
lengthParams.calculationType = 'preserveShape';
lengthParams.lengthUnit = GeometryService.UNIT_METER;
var p1 = inputPoints[inputPoints.length-2];
var p2 = inputPoints[inputPoints.length-1];
if(p1.x ===p2.x &&p1.y===p2.y){
return;
}
var polyline = new Polyline(map.spatialReference);
polyline.addPath([p1,p2]);
lengthParams.polylines=[polyline];
geometryService.lengths(lengthParams,function (dis) {
console.log(dis);
var _distance = dis.lengths[0];
totleDistance+=parseFloat(_distance);
var beetwentDistances = totleDistance.toFixed(2)+"米";
var tdistance = new TextSymbol(beetwentDistances,startFont,new Color([204,102,51]));
tdistance.setOffset(40,-3);
measureLayer.add(new Graphic(p2,tdistance));
});
}
measureLayer.add(new Graphic(evt.mapPoint,makerSymbol));
}else if(areaFun){
measureLayer.add(new Graphic(evt.mapPoint,makerSymbol));
}
});
toolbar.on("draw-end",function (evt) {
if(disFun||areaFun){
var geometry=evt.geometry;
var symbol = null;
switch(geometry.type){
case "polyline":
symbol = new SimpleLineSymbol(SimpleLineSymbol.STYLE_SOLID,
new Color([27,188,155,1]),2);
break;
case "polygon":
symbol = new SimpleFillSymbol(SimpleFillSymbol.STYLE_SOLID,
new SimpleLineSymbol(SimpleLineSymbol.STYLE_SOLID,new Color([27,188,155,1]),2),
new Color([255,255,0,0.25]));
break;
}
var graphic=new Graphic(geometry,symbol);
measureLayer.add(graphic);
if(disFun){
inputPoints.splice(0,inputPoints.length);
totleDistance =0.0;
disFun = false;
}else if(areaFun){
var areasAndLengthParams = new AreasAndLengthsParameters();
areasAndLengthParams.lengthUnit = GeometryService.UNIT_METER;
areasAndLengthParams.areaUnit=geometryService.UNIT_SQUARE_METERS;
areasAndLengthParams.calculationType="preserveShape";
geometryService.simplify([geometry],function (simplifiedGeometries) {
areasAndLengthParams.polygons=simplifiedGeometries;
geometryService.areasAndLengths(areasAndLengthParams,function (result) {
var font =new Font("14px",Font.STYLE_NORMAL,Font.VARIANT_NORMAL,Font.WEIGHT_BOLDER);
var areaResult = new TextSymbol(parseFloat(result.areas[0]).toFixed(2) + "平方米",font,new Color([204,102,51]));
var spoint = new Point(geometry.getExtent().getCenter().x,geometry.getExtent().getCenter().y,map.spatialReference);
measureLayer.add(new Graphic(spoint,areaResult));
})
});
areaFun=false;
}
}
toolbar.deactivate();
});
function clearAction() {
disFun=false;
inputPoints.splice(0,inputPoints.length);
totleDistance =0.0;
areaFun=false;
toolbar.deactivate();
map.setMapCursor("default");
measureLayer.clear();
}
})
})
</script>
</html>
|
