A与B相交后的图形查询
按照A与B图形得到相交后的图斑
<!--
<%@ Page Language="C#" AutoEventWireup="true" CodeBehind="Default.aspx.cs" Inherits="相交测试._Default" %>
-->
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head id="Head1" >
<title>相交测试服务</title>
<link rel="stylesheet" type="text/css" href="http://10.0.0.55/jsapi/dijit/themes/tundra/tundra.css" />
<link rel="stylesheet" type="text/css" href="http://10.0.0.55/jsapi/esri/css/esri.css" />
<script type="text/javascript" src="http://10.0.0.55/jsapi/init.js"></script>
<style>
#info {
top: 20px;
color: #444;
height: auto;
font-family: arial;
right: 20px;
margin: 5px;
padding: 10px;
position: absolute;
width: 115px;
z-index: 40;
border: solid 2px #666;
border-radius: 4px;
background-color: #fff;
}
html, body, #mapDiv {
padding:0;
margin:0;
height:100%;
}
button {
display: block;
}
</style>
</head>
<body>
<div>
<script type="text/javascript">
//定义地图
var map, tb, drawEvt;
require([
"esri/map",
"esri/toolbars/draw",
"esri/symbols/SimpleMarkerSymbol",
"esri/symbols/SimpleLineSymbol",
"esri/symbols/PictureFillSymbol",
"esri/symbols/CartographicLineSymbol",
"esri/graphic",
"esri/Color",
"dojo/dom",
"dojo/on",
"esri/tasks/GeometryService",
"esri/tasks/QueryTask",
"esri/tasks/query",
"dojo/domReady!"
],
function (
Map, Draw,
SimpleMarkerSymbol, SimpleLineSymbol,
PictureFillSymbol, CartographicLineSymbol,
Graphic,
Color, dom, on, GeometryService, QueryTask, Query
) {
map = new Map("mapDiv", { "spatialReference": { "wkid": 2359 } });
console.log(map);
var layer = new esri.layers.ArcGISDynamicMapServiceLayer("http://10.0.0.55:6080/arcgis/rest/services/xj/MapServer");
map.addLayer(layer);
map.on("load", initToolbar);
var markerSymbol = new SimpleMarkerSymbol();
markerSymbol.setColor(new Color("#0099FF"));
// lineSymbol used for freehand polyline, polyline and line.
var lineSymbol = new CartographicLineSymbol(
CartographicLineSymbol.STYLE_SOLID,
new Color([255, 0, 0]), 10,
CartographicLineSymbol.CAP_ROUND,
CartographicLineSymbol.JOIN_MITER, 1
);
// fill symbol used for extent, polygon and freehand polygon, use a picture fill symbol
// the images folder contains additional fill images, other options: sand.png, swamp.png or stiple.png
var fillSymbol = new PictureFillSymbol(
"images/mangrove.png",
new SimpleLineSymbol(
SimpleLineSymbol.STYLE_SOLID,
new Color('#050'),
1
),
42,
42
);
function initToolbar() {
tb = new Draw(map);
tb.on("draw-end", addGraphic);
// event delegation so a click handler is not
// needed for each individual button
on(dom.byId("info"), "click", function (evt) {
if (evt.target.id === "info") {
return;
}
var tool = evt.target.id.toLowerCase();
map.disableMapNavigation();
tb.activate(tool);
});
}
function addGraphic(evt) {
tb.deactivate();
map.enableMapNavigation();
var symbol;
if (evt.geometry.type === "point" || evt.geometry.type === "multipoint") {
symbol = markerSymbol;
} else if (evt.geometry.type === "line" || evt.geometry.type === "polyline") {
symbol = lineSymbol;
}
else {
symbol = fillSymbol;
}
//显示用户所绘图形
map.graphics.add(new Graphic(evt.geometry, symbol));
alert("显示用户所绘图形");
//1、先进行相交查询
var queryTask = new QueryTask("http://10.0.0.55:6080/arcgis/rest/services/xj/MapServer/1");
var query = new Query();
query.geometry = evt.geometry;
query.returnGeometry = true;
drawEvt = evt;
queryTask.execute(query, showResults);
}
function showResults(featureSet) {
map.graphics.clear();
//2、将相交的图形置入数组
var geos = [];
dojo.forEach(featureSet.features, function (feature) {
var graphic = feature;
graphic.setSymbol(lineSymbol);
geos.push(feature.geometry);
map.graphics.add(graphic);
});
alert("2、将相交的图形置入数组");
console.log(featureSet, "geos");
//3、调用系统相交服务进行分析，结果得到相交后的图形
geo = new GeometryService("http://10.0.0.55:6080/arcgis/rest/services/Utilities/Geometry/GeometryServer/");
geo.intersect(geos, drawEvt.geometry, output);
}
//这里返回的是数组
function output(geos) {
//4、讲相交后的图形变换，绘制到图上
alert("4、讲相交后的图形变换，绘制到图上");
// map.graphics.clear();
for (a = 0; a < geos.length; a++) {
var graphic = new Graphic();
graphic.setSymbol(fillSymbol);
graphic.geometry = geos[a];
map.graphics.add(graphic);
}
}
});
</script>
</div>
<div id="info">
<button id="Polygon">Polygon</button>
</div>
<div id="mapDiv" style="width: 900px; height: 600px; border: 1px solid #000;"></div>
</body>
</html>
