/// <summary>
/// Returns the inverse of this projection.
/// </summary>
/// <returns>IMathTransform that is the reverse of the current projection.</returns>
public override MathTransform Inverse()
{
if (_inverse == null)
{
_inverse = new TransverseMercator(_Parameters.ToProjectionParameter(), this);
}
return(_inverse);
}
/// <summary>
/// Returns the inverse of this projection.
/// </summary>
/// <returns>IMathTransform that is the reverse of the current projection.</returns>
public override IMathTransform Inverse()
{
if (_inverse == null)
{
_inverse = new TransverseMercator(this._Parameters, !_isInverse);
}
return(_inverse);
}
/// <summary>
/// Creates an instance of an TransverseMercatorProjection projection object.
/// </summary>
/// <param name="parameters">List of parameters to initialize the projection.</param>
/// <param name="inverse">Flag indicating wether is a forward/projection (false) or an inverse projection (true).</param>
/// <remarks>
/// <list type="bullet">
/// <listheader><term>Items</term><description>Descriptions</description></listheader>
/// <item><term>semi_major</term><description>Semi major radius</description></item>
/// <item><term>semi_minor</term><description>Semi minor radius</description></item>
/// <item><term>scale_factor</term><description></description></item>
/// <item><term>central meridian</term><description></description></item>
/// <item><term>latitude_origin</term><description></description></item>
/// <item><term>false_easting</term><description></description></item>
/// <item><term>false_northing</term><description></description></item>
/// </list>
/// </remarks>
protected TransverseMercator(IEnumerable <ProjectionParameter> parameters, TransverseMercator inverse)
: base(parameters, inverse)
{
Name = "Transverse_Mercator";
Authority = "EPSG";
AuthorityCode = 9807;
_esp = _es / (1.0 - _es);
_ml0 = mlfn(lat_origin, Math.Sin(lat_origin), Math.Cos(lat_origin));
/*
* e = Math.Sqrt(_es);
* ml0 = _semiMajor*mlfn(lat_origin, Math.Sin(lat_origin), Math.Cos(lat_origin));
* esp = _es / (1.0 - _es);
*/
}
/// <summary>
/// Returns the inverse of this projection.
/// </summary>
/// <returns>IMathTransform that is the reverse of the current projection.</returns>
public override IMathTransform Inverse()
{
if (_inverse==null)
_inverse = new TransverseMercator(this._Parameters, ! _isInverse);
return _inverse;
}
private static IMathTransform CreateCoordinateOperation(IProjection projection, IEllipsoid ellipsoid, ILinearUnit unit)
{
List<ProjectionParameter> parameterList = new List<ProjectionParameter>(projection.NumParameters);
for (int i = 0; i < projection.NumParameters; i++)
parameterList.Add(projection.GetParameter(i));
parameterList.Add(new ProjectionParameter("semi_major", ellipsoid.SemiMajorAxis));
parameterList.Add(new ProjectionParameter("semi_minor", ellipsoid.SemiMinorAxis));
parameterList.Add(new ProjectionParameter("unit", unit.MetersPerUnit));
IMathTransform transform = null;
switch (projection.ClassName.ToLower(CultureInfo.InvariantCulture).Replace(' ', '_'))
{
case "mercator":
case "mercator_1sp":
case "mercator_2sp":
//1SP
transform = new Mercator(parameterList);
break;
case "transverse_mercator":
transform = new TransverseMercator(parameterList);
break;
case "albers":
case "albers_conic_equal_area":
transform = new AlbersProjection(parameterList);
break;
case "krovak":
transform = new KrovakProjection(parameterList);
break;
case "lambert_conformal_conic":
case "lambert_conformal_conic_2sp":
case "lambert_conic_conformal_(2sp)":
transform = new LambertConformalConic2SP(parameterList);
break;
default:
throw new NotSupportedException(String.Format("Projection {0} is not supported.", projection.ClassName));
}
return transform;
}
