private static void ApplyParametersDefault(ProjectionInfo result, IEnumerable<INamedParameter> parameters)
{
Contract.Requires(result != null);
Contract.Requires(parameters != null);
var lon0Param = new MultiParameterSelector(
new CentralMeridianParameterSelector(),
new LongitudeOfNaturalOriginParameterSelector()
);
var loncParam = new LongitudeOfCenterParameterSelector();
var lat0Param = new MultiParameterSelector(
new LatitudeOfCenterParameterSelector(),
new LatitudeOfNaturalOriginParameterSelector());
var lat1Param = new StandardParallelParameterSelector(1);
var lat2Param = new StandardParallelParameterSelector(2);
var x0Param = new FalseEastingParameterSelector();
var y0Param = new FalseNorthingParameterSelector();
var k0Param = new ScaleFactorParameterSelector();
var alphaParam = new KeywordNamedParameterSelector("ALPHA", "AZIMUTH");
var angleSkewParam = new KeywordNamedParameterSelector("SKEW", "GAMMA");
var zoneParam = new FullMatchParameterSelector("ZONE");
var southParam = new FullMatchParameterSelector("SOUTH");
var standardParallel1Param = new MultiParameterSelector(
new StandardParallelParameterSelector(),
new StandardParallelParameterSelector(1));
var standardParallel2Param = new StandardParallelParameterSelector(2);
var paramLookup = new NamedParameterLookup(parameters);
paramLookup.Assign(lon0Param, loncParam, lat0Param, lat1Param, lat2Param, x0Param, y0Param, k0Param, alphaParam, angleSkewParam, zoneParam, southParam, standardParallel1Param, standardParallel2Param);
if (lon0Param.IsSelected)
result.CentralMeridian = lon0Param.GetValueAsDouble(OgcAngularUnit.DefaultDegrees);
if (loncParam.IsSelected)
result.LongitudeOfCenter = loncParam.GetValueAsDouble(OgcAngularUnit.DefaultDegrees);
if (lat0Param.IsSelected)
result.LatitudeOfOrigin = lat0Param.GetValueAsDouble(OgcAngularUnit.DefaultDegrees);
if (lat1Param.IsSelected)
result.StandardParallel1 = lat1Param.GetValueAsDouble(OgcAngularUnit.DefaultDegrees);
if (lat2Param.IsSelected)
result.StandardParallel2 = lat2Param.GetValueAsDouble(OgcAngularUnit.DefaultDegrees);
if (x0Param.IsSelected)
result.FalseEasting = x0Param.GetValueAsDouble(OgcLinearUnit.DefaultMeter);
if (y0Param.IsSelected)
result.FalseNorthing = y0Param.GetValueAsDouble(OgcLinearUnit.DefaultMeter);
if (k0Param.IsSelected)
result.ScaleFactor = k0Param.GetValueAsDouble(ScaleUnitUnity.Value) ?? 1.0;
if (alphaParam.IsSelected)
result.alpha = alphaParam.GetValueAsDouble(OgcAngularUnit.DefaultDegrees);
/*if (angleSkewParam.IsSelected)
result.gamma = angleSkewParam.GetValueAsDouble(OgcAngularUnit.DefaultDegrees);*/
if (southParam.IsSelected)
result.IsSouth = southParam.GetValueAsBoolean().GetValueOrDefault();
if (standardParallel1Param.IsSelected)
result.StandardParallel1 = standardParallel1Param.GetValueAsDouble(OgcAngularUnit.DefaultDegrees);
if (standardParallel2Param.IsSelected)
result.StandardParallel2 = standardParallel2Param.GetValueAsDouble(OgcAngularUnit.DefaultDegrees);
if (zoneParam.IsSelected)
result.Zone = zoneParam.GetValueAsInt32();
}
private static void ApplyParametersStere(ProjectionInfo result, IEnumerable<INamedParameter> parameters)
{
Contract.Requires(result != null);
Contract.Requires(parameters != null);
var lon0Param = new MultiParameterSelector(
new CentralMeridianParameterSelector(),
new LongitudeOfNaturalOriginParameterSelector(),
new LongitudeOfCenterParameterSelector());
var spParam = new MultiParameterSelector(
new LatitudeOfTrueScaleParameterSelector(),
new StandardParallelParameterSelector(),
new LatitudeOfNaturalOriginParameterSelector(),
new LatitudeOfCenterParameterSelector());
var k0Param = new ScaleFactorParameterSelector();
var x0Param = new FalseEastingParameterSelector();
var y0Param = new FalseNorthingParameterSelector();
var paramLookup = new NamedParameterLookup(parameters);
paramLookup.Assign(lon0Param, spParam, k0Param, x0Param, y0Param);
if (lon0Param.IsSelected)
result.CentralMeridian = lon0Param.GetValueAsDouble(OgcAngularUnit.DefaultDegrees);
if (spParam.IsSelected)
result.StandardParallel1 = spParam.GetValueAsDouble(OgcAngularUnit.DefaultDegrees);
if (k0Param.IsSelected)
result.ScaleFactor = k0Param.GetValueAsDouble(ScaleUnitUnity.Value) ?? 1.0;
if (x0Param.IsSelected)
result.FalseEasting = x0Param.GetValueAsDouble(OgcLinearUnit.DefaultMeter);
if (y0Param.IsSelected)
result.FalseNorthing = y0Param.GetValueAsDouble(OgcLinearUnit.DefaultMeter);
if (!result.LatitudeOfOrigin.HasValue && result.StandardParallel1.HasValue)
result.LatitudeOfOrigin = result.StandardParallel1.GetValueOrDefault() >= 0 ? 90.0 : -90.0;
}
public static ProjectionInfo CreateProjection(ICrsProjected crsProjected)
{
if (crsProjected == null) throw new ArgumentNullException("crsProjected");
Contract.Ensures(Contract.Result<ProjectionInfo>() != null);
var result = ProjectionInfo.FromProj4String(String.Empty);
result.Name = crsProjected.Name;
if (crsProjected.Authority != null) {
int epsgCode;
if (crsProjected.Authority.Name == "EPSG" && Int32.TryParse(crsProjected.Authority.Code, out epsgCode))
result.EpsgCode = epsgCode;
result.Authority = crsProjected.Authority.Name;
}
var geographicBase = (crsProjected.BaseCrs as ICrsGeodetic) ?? (crsProjected as ICrsGeodetic);
if (geographicBase != null)
result.GeographicInfo = Proj4CrsGeographic.CreateGeographic(geographicBase);
var projectionInfo = crsProjected.Projection as IParameterizedCoordinateOperationInfo;
if (projectionInfo == null)
return result;
var projectionMethod = projectionInfo.Method;
if(projectionMethod == null)
throw new InvalidOperationException("No projection method.");
var proj4Name = ToProj4MethodName(projectionMethod.Name);
IUnit geographicUnit = geographicBase == null ? null : geographicBase.Unit;
IUnit projectionUnit = crsProjected.Unit;
if (projectionUnit != null)
result.Unit = Proj4LinearUnit.ConvertToProj4(projectionUnit);
switch (proj4Name) {
case "stere":
ApplyParametersStere(result, projectionInfo.Parameters);
break;
default:
ApplyParametersDefault(result, projectionInfo.Parameters);
break;
}
if (result.Zone.HasValue && proj4Name == "tmerc")
proj4Name = "utm";
if (!TransformManager.Transforms.Exists(x => x.Proj4Name == proj4Name)) {
if (GeodeticOperationNameRegex.IsMatch(proj4Name)) {
proj4Name = "longlat";
}
else {
throw new InvalidOperationException();
}
}
switch (proj4Name) {
case "omerc": {
var offsetXParam = new FalseEastingParameterSelector();
var offsetYParam = new FalseNorthingParameterSelector();
var xAtOriginParam = new EastingAtCenterParameterSelector();
var yAtOriginParam = new NorthingAtCenterParameterSelector();
var paramLookup = new NamedParameterLookup(projectionInfo.Parameters);
paramLookup.Assign(offsetXParam, offsetYParam, xAtOriginParam, yAtOriginParam);
if (offsetXParam.IsSelected || offsetYParam.IsSelected)
result.Transform = TransformManager.GetProjection("Hotine_Oblique_Mercator_Azimuth_Center");
else if(xAtOriginParam.IsSelected || yAtOriginParam.IsSelected)
result.Transform = TransformManager.GetProjection("Hotine_Oblique_Mercator_Azimuth_Natural_Origin");
else
result.Transform = TransformManager.GetProj4(proj4Name);
break;
}
default:
result.Transform = TransformManager.GetProj4(proj4Name);
break;
}
var finalResult = ProjectionInfo.FromProj4String(result.ToProj4String()); // TODO: fix this hack
/*finalResult.CentralMeridian = result.CentralMeridian;
finalResult.LongitudeOfCenter = result.LongitudeOfCenter;
finalResult.LatitudeOfOrigin = result.LatitudeOfOrigin;
finalResult.StandardParallel1 = result.StandardParallel1;
finalResult.StandardParallel2 = result.StandardParallel2;
finalResult.FalseEasting = result.FalseEasting;
finalResult.FalseNorthing = result.FalseNorthing;
finalResult.ScaleFactor = result.ScaleFactor;
finalResult.alpha = result.alpha;
finalResult.IsSouth = result.IsSouth;
finalResult.Zone = result.Zone;
finalResult.Unit = result.Unit;
if (result.GeographicInfo == null) { // NOTE: this is all so terrible
finalResult.GeographicInfo = null;
}
else {
if (finalResult.GeographicInfo == null) {
finalResult.GeographicInfo = result.GeographicInfo;
}
else {
finalResult.GeographicInfo.Datum.Spheroid = result.GeographicInfo.Datum.Spheroid;
}
}*/
return finalResult;
}