mapTools.js
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import {loadModules} from 'esri-loader'
import {maps} from '@/libs/map/mapUtils'
import graphicSymbol from '@/assets/json/graphicSymbol.json'
import point from "shapefile/shp/point";
import queryUtils from "@libs/map/queryUtils";
import layers from '@/assets/json/layers.json'
import arcgisParser from 'terraformer-arcgis-parser'
import wktParse from 'terraformer-wkt-parser'
export default {
methods:{
getLayerByName(name) {
for (var i = 0; i < layers.length; i++) {
if (layers[i].layerName == name) {
return layers[i];
}
}
return null;
},
//创建buffer图形
createBuffer(geometry,distance,viewId,callBackFunction){
loadModules([
"esri/geometry/geometryEngine",
"esri/Graphic",
"esri/layers/GraphicsLayer"
]).then(([
geometryEngine,
Graphic,
GraphicsLayer
])=>{
var view = maps[viewId];
var bufferGeometry = geometryEngine.buffer(geometry,distance,'meters',true);
var layer = view.map.findLayerById("identifyLayer");
if(layer){
layer.removeAll();
}else {
layer = new GraphicsLayer({
id:"identifyLayer"
})
view.map.add(layer);
}
var symbol = geometry.type == 'point' ? graphicSymbol.pointSymbol.bufferSymbol : graphicSymbol.fillSymbol.bufferSymbol;
var oldGraphic = new Graphic({
geometry:geometry,
symbol:symbol
})
layer.add(oldGraphic);
var graphic = new Graphic({
geometry:bufferGeometry,
symbol:graphicSymbol.fillSymbol.bufferGeoSymbol
})
layer.add(graphic);
if(callBackFunction && typeof callBackFunction == 'function'){
callBackFunction(bufferGeometry);
}
}).catch(err => {
console.log(err);
})
},
queryAttributes(url,where,callbackFunction){
queryUtils.methods.queryByWhere(url,where,null,false,"",null,function (res) {
var features = res.features;
if(callbackFunction && typeof callbackFunction == 'function'){
callbackFunction(features);
}
})
},
//清除缓冲图层
clearBufferLayer(viewId){
var view = maps[viewId];
var layer = view.map.findLayerById("identifyLayer");
if(layer){
layer.removeAll();
}
},
//查询地籍区/地籍子区根据区域代码
queryDjqByDm(url,type,dm,callBackFunction){
var where = "";
if(type == 'djq'){
where = {"DJQDM":dm}
}else if(type == 'djzq'){
where = {"DJZQDM":dm}
}
queryUtils.methods.queryByWhere(url,where,null,true,"","",function (res) {
var features = res.features;
if(callBackFunction && typeof callBackFunction == 'function'){
callBackFunction(features);
}
});
},
parseWktToArc(wkt){
var primitive = wktParse.parse(wkt);
/*if(primitive.type == "MultiPolygon"){
primitive.type = "Polygon"
}*/
return arcgisParser.convert(primitive)
},
//添加添加元素和覆盖的元素到地图上
addOverLayer(geometry){
var view = maps["testMap"];
loadModules([
"esri/Graphic",
"esri/geometry/Polygon",
"esri/layers/GraphicsLayer",
"esri/geometry/geometryEngineAsync",
"esri/geometry/Extent"
]).then(([
Graphic,
Polygon,
GraphicsLayer,
geometryEngineAsync,
Extent
])=>{
var graphic = new Graphic({
geometry:geometry
})
var layer = view.map.findLayerById("identifyLayer");
if(layer){
layer.removeAll();
}else {
layer = new GraphicsLayer({
id:"overLayer"
})
view.map.add(layer);
}
var impotSymbol = graphicSymbol.fillSymbol.importSymbol;
graphic.symbol = impotSymbol;
layer.add(graphic);
var extent = new Extent(JSON.parse(JSON.stringify(graphic.geometry.extent)))
extent.spatialReference = view.spatialReference;
// view.extent = extent;
view.center = extent.center;
view.zoom = 15;
}).catch(err => {
console.log(err);
})
},
}
}