Function PseudoMercator.tryFromParameters

Prepare a bounded Pseudo-Mercator operation without throwing.

static bool tryFromParameters(
  const Ellipsoid!T ellipsoid,
  const Longitude!T longitudeOfNaturalOrigin,
  const T falseEasting,
  const T falseNorthing,
  out PseudoMercator result
) pure nothrow @nogc @safe;

Flattening is retained as source-ellipsoid identity but does not enter EPSG method 1024 coordinate equations. Linear offsets use the same unit as the ellipsoid semi-major axis.

Parameters

NameDescription
ellipsoid Valid ellipsoid supplying the positive finite semi-major axis.
longitudeOfNaturalOrigin Natural-origin longitude.
falseEasting Finite false easting in the ellipsoid linear unit.
falseNorthing Finite false northing in the ellipsoid linear unit.
result Receives the prepared operation on success.

Returns

true when all parameters and derived represented bounds are valid; otherwise false. On failure result is initialized to .init on entry and has no guaranteed value on failure.

Example

Example preparing Pseudo-Mercator without throwing. 

import geodesy;
PseudoMercator!double projection;
assert(PseudoMercator!double.tryFromParameters(
    wgs84!double(),
    Longitude!double.fromDegrees(0.0),
    0.0,
    0.0,
    projection));
assert(projection.isValid);