Function TopocentricFrame.fromGeocentricOrigin

Prepare a frame from a geocentric origin.

static TopocentricFrame fromGeocentricOrigin(
  const Ellipsoid!T ellipsoid,
  const GeocentricCoordinate!T origin
) @safe;

Parameters

NameDescription
ellipsoid Valid ellipsoid defining the frame linear unit.
origin Geocentric origin in the same linear unit.

Returns

The prepared frame.

Throws

GeodesyValueException when the ellipsoid is invalid, the origin is the exact geocentre, or no finite prepared frame can be produced.

Example

Example preparing an ENU frame from an ECEF origin. 

import geodesy;
const origin = GeodeticCoordinate!double.fromComponents(
    Latitude!double.fromDegrees(48.20849),
    Longitude!double.fromDegrees(16.37208),
    171.0);
const xyz = geodeticToGeocentric(origin, wgs84!double());
const frame = TopocentricFrame!double.fromGeocentricOrigin(
    wgs84!double(), xyz);
assert(frame.isValid);