EllipsoidGeodesic
查阅Mars3D API

new Cesium.EllipsoidGeodesic(start, end, ellipsoid)
engine/Source/Core/EllipsoidGeodesic.js 286

Initializes a geodesic on the ellipsoid connecting the two provided planetodetic points.
参数名称 类型 默认值 描述信息
start Cartographic 可选 The initial planetodetic point on the path.
end Cartographic 可选 The final planetodetic point on the path.
ellipsoid Ellipsoid Ellipsoid.default 可选 The ellipsoid on which the geodesic lies.

成员(属性)

readonly ellipsoid : Ellipsoid
engine/Source/Core/EllipsoidGeodesic.js 310

Gets the ellipsoid.

readonly end : Cartographic
engine/Source/Core/EllipsoidGeodesic.js 350

Gets the final planetodetic point on the path.

readonly endHeading : number
engine/Source/Core/EllipsoidGeodesic.js 378

Gets the heading at the final point.

readonly start : Cartographic
engine/Source/Core/EllipsoidGeodesic.js 338

Gets the initial planetodetic point on the path.

readonly startHeading : number
engine/Source/Core/EllipsoidGeodesic.js 362

Gets the heading at the initial point.

readonly surfaceDistance : number
engine/Source/Core/EllipsoidGeodesic.js 322

Gets the surface distance between the start and end point

方法

interpolateUsingFraction(fraction, result) → Cartographic
engine/Source/Core/EllipsoidGeodesic.js 411

Provides the location of a point at the indicated portion along the geodesic.
参数名称 类型 描述信息
fraction number The portion of the distance between the initial and final points.
result Cartographic 可选 The object in which to store the result.
返回值:
The location of the point along the geodesic.

interpolateUsingSurfaceDistance(distance, result) → Cartographic
engine/Source/Core/EllipsoidGeodesic.js 430

Provides the location of a point at the indicated distance along the geodesic.
参数名称 类型 描述信息
distance number The distance from the initial point to the point of interest along the geodesic
result Cartographic 可选 The object in which to store the result.
返回值:
The location of the point along the geodesic.
Throws:
  • DeveloperError : start and end must be set before calling function interpolateUsingSurfaceDistance

setEndPoints(start, end)
engine/Source/Core/EllipsoidGeodesic.js 395

Sets the start and end points of the geodesic
参数名称 类型 描述信息
start Cartographic The initial planetodetic point on the path.
end Cartographic The final planetodetic point on the path.
packages/engine
packages/widgets