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潘卓然 Parn Deedlit
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Merge pull request #45 from MapGIS/dev_yangkun
Dev yangkun
2 parents 2c1e1fd + 53ce4ae commit 65d90a1

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‎src/service/ArcGis/BaseParam.js‎

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import {
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Zondy,cloneObject
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} from '../common';
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/**
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* @class module:ArcGis.ArcGisBaseParam
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* @description ArcGis服务
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* @author 基础平台-杨琨
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*/
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class ArcGisBaseParam {
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clone(){
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//完全返回一个新对象
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return cloneObject(this);
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}
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//接收一个参数对象，如果参数对象里的值，本身也含有，则赋值，否则不赋值
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static fromJSON(JSON){
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let me = new this();
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if(JSON instanceof Object){
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for(let key in JSON){
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if(me.hasOwnProperty(key)){
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me[key] = JSON[key];
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}
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}
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}
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return me;
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}
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toJSON(){
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//按照arcgis的tiJson编写，因为只接受对象类型，因此不做其他类型判断，返回一个对象
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let objInn = this;
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let returnObj = {};
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for (let attr in objInn) {
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if (typeof objInn[attr] !== "function" && attr !== "CLASS_NAME") {
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if(objInn[attr]) returnObj[attr] = objInn[attr];
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}
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}
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returnObj["spatialRel"] = "esriSpatialRelIntersects";
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return returnObj;
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}
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}
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export {ArcGisBaseParam};
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Zondy.Service.ArcGisBaseParam = ArcGisBaseParam;

‎src/service/ArcGis/Extent.js‎

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import {extend, Zondy,notNULL} from "../common";
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import {ArcGisGeometry} from "./Geometry";
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import {ArcGisPoint} from "./Point";
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import * as T from '@turf/turf'
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import * as H from '@turf/helpers'
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/**
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* @class module:ArcGis.ArcGisExtent
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* @description ArcGisExtent对象
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* @author 基础平台-杨琨
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* @param options - {Object} 必选项，构造Extent对象参数。
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* @param {String} [query.xmin] 可选项，x轴最小坐标。
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* @param {String} [query.ymin] 可选项，x轴最大坐标。
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* @param {String} [query.ymin] 可选项，y轴最小坐标。
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* @param {String} [query.ymax] 可选项，y轴最小坐标。
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* @param {String} [query.zmin] 可选项，z轴最小坐标。
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* @param {String} [query.zmax] 可选项，z轴最小坐标。
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* @param {String} [query.mmin] 可选项，m轴最小坐标。
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* @param {String} [query.mmax] 可选项，m轴最小坐标。
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*/
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class ArcGisExtent extends ArcGisGeometry{
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constructor(options) {
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super(options);
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this.center = undefined;
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this.hasM = false;
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this.hasZ = false;
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this.height = 0;
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this.mmax = undefined;
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this.mmin = undefined;
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this.type = "extent";
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this.width = 0;
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this.xmax = 0;
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this.xmin = 0;
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this.ymax = 0;
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this.ymin = 0;
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this.zmax = undefined;
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this.zmin = undefined;
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this.extent = this;
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//确保私有变量不能被options修改
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this.private = ["center","hasM","hasZ","height","width","type","extent"];
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for (let key in this.private){
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if(notNULL(options[this.private[key]])){
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throw new Error("[accessor] cannot assign to read-only property '" + this.private[key] + "' of ArcGisExtent");
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}
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}
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extend(this,options);
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//如果z、m有值，hasZ、hasM采薇true
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if(this.zmax || this.zmin){
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this.hasZ = true;
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}
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if(this.mmax || this.mmin){
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this.hasM = true;
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}
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//生成bbox
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this._extentPolygon = T.polygon([[
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[this.xmin, this.ymin],
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[this.xmin, this.ymax],
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[this.xmax, this.ymax],
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[this.ymax, this.ymin],
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[this.xmin, this.ymin]
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]],{name:"_extentPlygon"});
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//生成中心点
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this.center = initCenter(this);
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//计算width，height
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this.width = this.xmax - this.xmin;
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this.height = this.ymax - this.ymin;
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}
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}
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function initCenter(me){
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let points = [
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H.point( [me.xmin, me.ymin]),
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H.point( [me.xmin, me.ymax]),
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H.point( [me.xmax, me.ymax]),
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H.point( [me.ymax, me.ymin]),
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H.point( [me.xmin, me.ymin])
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];
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let featureCollection = H.featureCollection(points);
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let coordinates = T.center(featureCollection).geometry.coordinates;
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return new ArcGisPoint({
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longitude: coordinates[0],
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latitude: coordinates[1]
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});
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}
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/**
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* @function module:ArcGis.ArcGisExtent.prototype.equals
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* @description 比较两个Extent对象是否相等
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* @param extent - {ArcGisExtent} 必选项，要比较的ArcGisExtent对象。
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* @returns Boolean，对象是否相等
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*/
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ArcGisExtent.prototype.equals = function (extent){
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return this.mmax === extent.mmax &&
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this.mmin === extent.mmin &&
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this.xmax === extent.xmax &&
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this.xmin === extent.xmin &&
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this.ymax === extent.ymax &&
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this.ymin === extent.ymin &&
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this.zmax === extent.zmax &&
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this.zmin === extent.zmin;
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}
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/**
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* @function module:ArcGis.ArcGisExtent.prototype.contains
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* @description 判断是否包含一个点或者一个ArcGisExtent对象
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* @param geometry - {Geometry} 必选项，要比较的ArcGisExtent对象或者ArcGisPoint对象。
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* @returns Boolean，是否包含
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*/
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ArcGisExtent.prototype.contains = function (geometry){
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if(geometry.type === "point"){
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let point = geometry.toArray();
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point = T.point([point[0], point[1]]);
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return T.booleanContains(this._extentPolygon,point)
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}
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if(geometry.type === "extent"){
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return T.booleanContains(this._extentPolygon,geometry._extentPolygon)
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}
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return false;
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}
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/**
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* @function module:ArcGis.ArcGisExtent.prototype.expand
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* @description 根据输入的值，扩大或缩小一个ArcGisExtent
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* @param factor - {Number} 必选项，放大或缩小系数。
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* @returns ArcGisExtent，缩放后的ArcGisExtent
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*/
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ArcGisExtent.prototype.expand = function (factor){
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if(factor instanceof Number){
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factor = Math.abs(factor);
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this.width = this.width * factor;
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this.height = this.height * factor;
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this.xmin = this.center.x - this.width / 2;
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this.xmax = this.center.x + this.width / 2;
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this.ymin = this.center.y - this.height / 2;
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this.ymax = this.center.y + this.height / 2;
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return this;
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}else {
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throw new Error("require is not defined");
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}
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}
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/**
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* @function module:ArcGis.ArcGisExtent.prototype.intersects
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* @description 比较点、多点、线、多边形、extent是否与当前extent相交
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* @param geometry - {Geometry} 必选项，要比较的几何对象。
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* @returns Boolean，是否相交
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*/
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ArcGisExtent.prototype.intersects = function (geometry){
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if(!geometry.type){
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return false;
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}
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let geom;
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if(geometry.type === "polyline"){
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geom = H.multiLineString(geometry.paths);
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}else if(geometry.type === "point"){
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geom = H.point(geometry.toArray());
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}else if(geometry.type === "multipoint"){
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geom = H.multiPoint(geometry.points);
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}else if(geometry.type === "extent"){
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geom = geometry._extentPolygon;
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}else if(geometry.type === "polygon"){
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geom = H.polygon(geometry.rings);
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}
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return !T.booleanDisjoint(geom,this._extentPolygon);
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}
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/**
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* @function module:ArcGis.ArcGisExtent.prototype.offset
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* @description 根据输入的dx, dy, dz值，平移extend
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* @param dx - {Number} 必选项，要平移的x值。
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* @param dx - {Number} 必选项，要平移的y值。
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* @param dx - {Number} 必选项，要平移的z值。
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* @returns ArcGisExtent，平移后的ArcGisExtent对象
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*/
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ArcGisExtent.prototype.offset = function (dx, dy, dz){
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this.xmax += dx;
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this.xmin += dx;
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this.ymax += dy;
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this.ymin += dy;
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if(this.hasZ){
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this.zmax += dz;
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this.zmin += dz;
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}else {
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this.hasZ = true;
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this.zmax = 0;
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this.zmin = 0;
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}
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return this;
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}
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/**
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* @function module:ArcGis.ArcGisExtent.prototype.centerAt
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* @description 根据输入的ArcGisPoint对象，生成衣蛾新的中心点
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* @param point - {ArcGisPoint} 必选项，新的中心点。
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* @returns ArcGisExtent
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*/
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ArcGisExtent.prototype.centerAt = function (point){
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if(point instanceof ArcGisPoint){
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this.center = new ArcGisPoint({
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longitude: point.x,
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latitude: point.y
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});
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this.xmin = this.center.x - this.width / 2;
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this.xmax = this.center.x + this.width / 2;
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this.ymin = this.center.y - this.height / 2;
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this.ymax = this.center.y + this.height / 2;
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return this;
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}
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}
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ArcGisExtent.prototype.normalize = function (){
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return [this];
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}
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/**
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* @function module:ArcGis.ArcGisExtent.prototype.union
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* @description 输入一个ArcGisExtent对象，与原extent对象合并，生成一个新的extent
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* @param extent - {ArcGisExtent} 必选项，要合并的ArcGisExtent对象。
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* @returns ArcGisExtent，新的Extent对象
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*/
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ArcGisExtent.prototype.union = function (extent){
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let cur = this.center;
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let nex = extent.center;
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if(((nex.x - cur.x) > 0 && (nex.y - cur.y) > 0) || ((nex.x - cur.x) === 0 && (nex.y - cur.y) > 0)
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|| ((nex.x - cur.x) === 0 && (nex.y - cur.y) === 0)
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|| ((nex.x - cur.x) > 0 && (nex.y - cur.y) === 0)){
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this.xmax = extent.xmax;
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this.ymax = extent.ymax;
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}else if((nex.x - cur.x) > 0 && (nex.y - cur.y) < 0 || ((nex.x - cur.x) === 0 && (nex.y - cur.y) < 0)){
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this.xmax = extent.xmax;
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this.ymin = extent.ymin;
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}else if((nex.x - cur.x) < 0 && (nex.y - cur.y) < 0){
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this.xmin = extent.xmin;
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this.ymin = extent.ymin;
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}else if((nex.x - cur.x) < 0 && (nex.y - cur.y || ((nex.x - cur.x) < 0 && (nex.y - cur.y) < 0)) === 0){
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this.xmin = extent.xmin;
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this.ymax = extent.ymax;
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}
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this.center = initCenter(this);
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//计算width，height
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this.width = this.xmax - this.xmin;
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this.height = this.ymax - this.ymin;
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return this;
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}
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/**
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* @function module:ArcGis.ArcGisExtent.prototype.toString
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* @description 返回如下格式的字符串："xmin,ymin,xmax,ymax"
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* @returns Sting
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*/
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ArcGisExtent.prototype.toString = function (){
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return this.xmin + "," + this.ymin + "," + this.xmax + "," + this.ymax;
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}
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export {ArcGisExtent};
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Zondy.Service.ArcGisExtent = ArcGisExtent;

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