/// <summary>
/// Gets the item with the specified properties.
/// </summary>
/// <param name="method">The coordinate operation method.</param>
/// <param name="parameters">The parameters of the operation.</param>
/// <param name="areaOfUse">The area of use.</param>
/// <param name="ellipsoid">The ellipsoid.</param>
/// <returns>The instance with the specified identifier.</returns>
public CoordinateProjection this[CoordinateOperationMethod method, IDictionary <CoordinateOperationParameter, Object> parameters, AreaOfUse areaOfUse, Ellipsoid ellipsoid]
{
get
{
if (method == null)
{
return(null);
}
if (areaOfUse == null)
{
return(null);
}
if (ellipsoid == null)
{
return(null);
}
CoordinateProjectionData matchingData = this.dataCollection.Where(data => data != null && this.projectionTypes.ContainsKey(data.Method.Code)).FirstOrDefault(data => data.Method.Equals(method) && (areaOfUse.Equals(AreaOfUse.Undefined) || data.AreaOfUse.Equals(areaOfUse)) && this.IsMatching(data.Parameters, parameters));
// no matching projection is available
if (matchingData == null)
{
return(null);
}
return(this.CreateProjection(matchingData, ellipsoid));
}
}
/// <summary>
/// Gets the item with the specified identifier.
/// </summary>
/// <param name="identifier">The identifier.</param>
/// <param name="ellipsoid">The ellipsoid.</param>
/// <returns>The instance with the specified identifier.</returns>
public CoordinateProjection this[String identifier, Ellipsoid ellipsoid]
{
get
{
if (identifier == null || ellipsoid == null)
{
return(null);
}
CoordinateProjectionData data = this.dataCollection[identifier];
this.EnsureOperationTypes();
// TODO: remove condition, once all projections are implemented
if (data == null || !this.projectionTypes.ContainsKey(data.Method.Code))
{
return(null);
}
return(this.CreateProjection(data, ellipsoid));
}
}
/// <summary>
/// Creates a coordinate projection.
/// </summary>
/// <param name="data">The raw coordinate projection data.</param>
/// <param name="ellipsoid">The ellipsoid.</param>
/// <returns>The produced coordinate projection.</returns>
private CoordinateProjection CreateProjection(CoordinateProjectionData data, Ellipsoid ellipsoid)
{
Object[] arguments = new Object[] { data.Identifier, data.Name, data.Remarks, data.Aliases, data.Parameters, ellipsoid, data.AreaOfUse };
return(Activator.CreateInstance(this.projectionTypes[data.Method.Code], arguments) as CoordinateProjection);
}
