geoUtils.js
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/*
* 图形相关的操作 js
* */
import layers from '@/assets/json/layers.json'
import queryUtils from "@libs/map/queryUtils";
import {loadModules} from "esri-loader"
import arcgisParser from 'terraformer-arcgis-parser'
import wktParse from 'terraformer-wkt-parser'
export default {
data(){
return{
}
},
methods: {
getLayerByName(name) {
for (var i = 0; i < layers.length; i++) {
if (layers[i].layerName == name) {
return layers[i];
}
}
return null;
},
queryGeoByBsm(bsm, type, callBackFunction) {
var layer = null;
if (type == 'zd') {
layer = this.getLayerByName("ZDJBXX");
} else if (type == 'zrz') {
layer = this.getLayerByName("ZRZ");
} else {
console.log("未定义类型！！");
return;
}
if (!layer) {
console.log("没有找到图层，不能查询");
return;
}
queryUtils.methods.queryByWhere(layer.layerUrl+"/"+layer.id, {"BSM": bsm}, null, true, null, null, function (res) {
var features = res.features;
if (callBackFunction && typeof callBackFunction == 'function') {
callBackFunction(features);
}
});
},
//生成介质点
craetJZPoint(graphic) {
var geomtry = graphic.geometry,rings = geomtry.rings[0];
var pointInfos = [];
this.getPointByRings(rings,pointInfos);
return pointInfos;
},
getPointByRings(rings,pointInfos){
for(var i = 0;i < rings.length;i++){
var children = rings[i];
if(children.length == 2 && typeof children[0] == 'number'){
var obj = {};
obj.jzdh = "j"+pointInfos.length;
obj.sxh = pointInfos.length;
obj.x = children[0];
obj.y = children[1];
pointInfos.push(obj);
}else {
this.getPointByRings(children,pointInfos);
}
}
},
//生成介质线
createJZLine(graphic,callBackFunction) {
var self = this;
loadModules([
"esri/geometry/support/geodesicUtils",
"esri/geometry/Point",
"esri/geometry/Polyline"
]).then(([
geodesicUtils,
Point,
Polyline
])=>{
//取得各个坐标点 然后生成外围坐标线
var geometry = graphic.geometry,
rings = geometry.rings,
points = [];
if(rings.length > 0){
for(var i = 0;i < rings.length;i++){
var danPoints = [];
self.getPointByRings(rings[i],danPoints);
points.push(danPoints);
}
}else {
var danPoints = [];
self.getPointByRings(rings,danPoints);
points.push(danPoints);
}
var lines = [];
//meters
for(var i = 0;i < points.length;i++){
for(var j = 0;j < points[i].length;j++){
if(j < (points[i].length - 1)){
const join = geodesicUtils.geodesicDistance(
new Point({ x: points[i][j].x, y: points[i][j].y }),
new Point({ x: points[i][j+1].x, y: points[i][j+1].y }),
"meters"
);
const { distance, azimuth } = join;
var obj = {
startPoint:points[i][j].x +"," +points[i][j].y ,
endPoint:points[i][j+1].x +","+points[i][j+1].y,
qdh:points[i][j].sxh,
zdh:points[i][j+1].sxh,
distance:distance,
jzxlx:"",
jzxwz:"",
jzxxz:"",
remark:""
}
lines.push(obj);
}else{
const join = geodesicUtils.geodesicDistance(
new Point({ x: points[i][j].x, y: points[i][j].y }),
new Point({ x: points[i][0].x, y: points[i][0].y }),
"meters"
);
const { distance, azimuth } = join;
var obj = {
startPoint:points[i][j].x +"," +points[i][j].y ,
endPoint:points[i][0].x +"," +points[i][0].y ,
qdh:points[i][j].sxh,
zdh:points[i][0].sxh,
distance:distance,
jzxlx:"",
jzxwz:"",
jzxxz:"",
remark:""
}
lines.push(obj);
}
}
}
if(callBackFunction && typeof callBackFunction == "function"){
callBackFunction(lines);
}
}).catch( err => {
throw (err);
})
},
//wkt转换成arcgis
parseWktToArc(wkt){
var primitive = wktParse.parse(wkt);
/*if(primitive.type == "MultiPolygon"){
primitive.type = "Polygon"
}*/
return arcgisParser.convert(primitive)
}
}
}