openlayermap/src/supermap/common/iServer/PointWithMeasure.js

openlayer Map Component for Vue 2.0

import {SuperMap} from '../SuperMap'
import {Util} from '../commontypes/Util'
import {Point} from '../commontypes/geometry/Point'

/**
 * @class SuperMap.PointWithMeasure
 * @category  iServer SpatialAnalyst
 * @classdesc 路由点类。路由点是指具有线性度量值(Measure)的二维地理坐标点。
 * @param options - {Object} 可选参数。如:</br>
 *        measure - {number}度量值，即路由对象属性值 M。</br>
 *        x - {number}获取当前点对象在地理坐标系下的 X 坐标值。</br>
 *        y - {number}获取当前点对象在地理坐标系下的 Y 坐标值。</br>
 * @extends SuperMap.Geometry.Point
 */
export class PointWithMeasure extends Point {
  constructor (options) {
    super(options)

        /**
         * @member SuperMap.PointWithMeasure.prototype.measure -{number}
         * @description 度量值，即路由对象属性值 M。
         */
    this.measure = null

    if (options) {
      Util.extend(this, options)
    }

    this.CLASS_NAME = 'SuperMap.PointWithMeasure'
  }

    /**
     * @function SuperMap.PointWithMeasure.prototype.equals
     * @description 判断两个路由点对象是否相等。如果两个路由点对象具有相同的坐标以及度量值，则认为是相等的。
     * @param geom - {SuperMap.PointWithMeasure} 需要判断的路由点对象。
     * @return {boolean} 两个路由点对象是否相等（true为相等，false为不等）。
     */
  equals (geom) {
    var equals = false
    if (geom != null) {
      var isValueEquals = this.x === geom.x && this.y === geom.y && this.measure === geom.measure
      var isNaNValue = isNaN(this.x) && isNaN(this.y) && isNaN(this.measure)
      var isNaNGeometry = isNaN(geom.x) && isNaN(geom.y) && isNaN(geom.measure)
      equals = (isValueEquals || (isNaNValue && isNaNGeometry))
    }
    return equals
  }

    /**
     * @function SuperMap.PointWithMeasure.prototype.toJson
     * @description 转换为json对象。
     toJson() {
        var result = "{"
        if (this.measure != null && this.measure != undefined) {
            result += "\"measure\":" + this.measure + ","
        }
        result += "\"x\":" + this.x + ","
        result += "\"y\":" + this.y
        result += "}"
        return result
    }

     /**
     * @function SuperMap.PointWithMeasure.prototype.destroy
     * @description 释放资源，将引用资源的属性置空。
     */
  destroy () {
    var me = this
    me.measure = null
    me.x = null
    me.y = null
  }

    /**
     * @function SuperMap.PointWithMeasure.fromJson
     * @description 将 JSON 对象转换为{@link SuperMap.PointWithMeasure} 对象。
     * @param jsonObject - {Object} JSON 对象表示的路由点。
     * @return {SuperMap.PointWithMeasure} 转化后的 PointWithMeasure 对象。
     */
  static fromJson (jsonObject) {
    if (!jsonObject) {
      return
    }
    return new PointWithMeasure({
      x: jsonObject.x,
      y: jsonObject.y,
      measure: jsonObject.measure
    })
  }
}

SuperMap.PointWithMeasure = PointWithMeasure