LonlatProjection

new Cesium.LonlatProjection(ellipsoid)
MapGIS/Project/LonlatProjection.js 20

本投影变换区别于GeographicProjection的关键在于加入了GCJ-02的坐标转换
Name Type Default Description
ellipsoid Ellipsoid Ellipsoid.WGS84 optional 默认采取WGS椭球.
Author:
  • 基础平台-潘卓然

Members

readonly ellipsoid : Ellipsoid
MapGIS/Project/LonlatProjection.js 35

获取椭球 Ellipsoid.

Methods

project(cartographic, result) → Cartesian3
MapGIS/Project/LonlatProjection.js 52

Converts geodetic ellipsoid coordinates, in radians, to the equivalent Web Mercator X, Y, Z coordinates expressed in meters and returned in a Cartesian3. The height is copied unmodified to the Z coordinate.
Name Type Description
cartographic Cartographic The cartographic coordinates in radians.
result Cartesian3 optional The instance to which to copy the result, or undefined if a new instance should be created.
Returns:
The equivalent web mercator X, Y, Z coordinates, in meters.

unproject(cartesian, result) → Cartographic
MapGIS/Project/LonlatProjection.js 82

Converts Web Mercator X, Y coordinates, expressed in meters, to a Cartographic containing geodetic ellipsoid coordinates. The Z coordinate is copied unmodified to the height.
Name Type Description
cartesian Cartesian3 The web mercator Cartesian position to unrproject with height (z) in meters.
result Cartographic optional The instance to which to copy the result, or undefined if a new instance should be created.
Returns:
The equivalent cartographic coordinates.