dc-sdk/core/transform/DC.T.js

/*
 * @Author: Caven
 * @Date: 2020-01-07 09:00:32
 * @Last Modified by: Caven
 * @Last Modified time: 2020-01-31 13:51:12
 */
import Cesium from '@/namespace'

DC.T = class {
  /**
   *
   * @param {*} cartesian
   * 卡迪尔坐标转84坐标
   */
  static transformCartesianToWSG84(cartesian) {
    if (cartesian) {
      let ellipsoid = Cesium.Ellipsoid.WGS84
      let cartographic = ellipsoid.cartesianToCartographic(cartesian)
      return new DC.Position(
        Cesium.Math.toDegrees(cartographic.longitude),
        Cesium.Math.toDegrees(cartographic.latitude),
        cartographic.height
      )
    }
    return new DC.Position(0, 0)
  }

  /**
   *
   * @param {*} position
   * 84坐标转卡迪尔坐标
   */
  static transformWSG84ToCartesian(position) {
    return position
      ? Cesium.Cartesian3.fromDegrees(position.lng, position.lat, position.alt, Cesium.Ellipsoid.WGS84)
      : Cesium.Cartesian3.ZERO
  }

  /**
   *
   * @param {*} position
   * 84坐标转制图坐标
   */
  static transformWSG84ToCartographic(position) {
    return position
      ? Cesium.Cartographic.fromDegrees(position.lng, position.lat, position.alt)
      : Cesium.Cartographic.ZERO
  }

  /**
   *
   * @param {*} cartesianArr
   * 卡迪尔坐标数组转84坐标数组
   */
  static transformCartesianArrayToWSG84Array(cartesianArr) {
    return cartesianArr ? cartesianArr.map(item => DC.T.transformCartesianToWSG84(item)) : []
  }

  /**
   *
   * @param {*} WSG84Arr
   * 84坐标数组转卡迪尔坐标数组
   */
  static transformWSG84ArrayToCartesianArray(WSG84Arr) {
    return WSG84Arr ? WSG84Arr.map(item => DC.T.transformWSG84ToCartesian(item)) : []
  }

  static transformWindowCoordToWSG84(position, viewer) {}

  static transformWSG84ToWindowCoord(position, viewer) {}

  static transformWSG84ToCanvasCoord(position) {}

  static transformCanvasCoordToWSG84(position) {}
}