public override FeatureList process(FeatureList input, FilterEnv env)
{
FeatureList output = new FeatureList();
// HACER ALGO DEL ESTILO:
if (transform == null)
{
//Create zone UTM 32N projection
IProjectedCoordinateSystem utmProj = CreateUtmProjection(32);
//Create geographic coordinate system (lets just reuse the CS from the projection)
IGeographicCoordinateSystem geoCS = utmProj.GeographicCoordinateSystem;
//Create transformation
CoordinateTransformationFactory ctFac = new CoordinateTransformationFactory();
// TODO DANI Mirar de donde viene este source y target
ICoordinateTransformation Coordinatetransform = null;// TODO = ctFac.CreateFromCoordinateSystems(source, target);
//cs
string wkt = "GEOGCS[\"GCS_WGS_1984\",DATUM[\"D_WGS_1984\",SPHEROID[\"WGS_1984\",6378137,298.257223563]],PRIMEM[\"Greenwich\",0],UNIT[\"Degree\",0.0174532925199433]]";
//ICoordinateSystem cs = SharpMap.Converters.WellKnownText.CoordinateSystemWktReader.Parse(wkt) as ICoordinateSystem;
ICoordinateSystem cs = ProjNet.Converters.WellKnownText.CoordinateSystemWktReader.Parse(wkt) as ICoordinateSystem;
//wgs84
GeographicCoordinateSystem wgs84 = GeographicCoordinateSystem.WGS84;
//gcs
CoordinateSystemFactory cFac = new ProjNet.CoordinateSystems.CoordinateSystemFactory();
//CoordinateSystemFactory cFac = new SharpMap.CoordinateSystems.CoordinateSystemFactory();
//Create Bessel 1840 geographic coordinate system
IEllipsoid ellipsoid = cFac.CreateFlattenedSphere("Bessel 1840", 6377397.155, 299.15281, LinearUnit.Metre);
IHorizontalDatum datum = cFac.CreateHorizontalDatum("Bessel 1840", DatumType.HD_Geocentric, ellipsoid, null);
IGeographicCoordinateSystem gcs = cFac.CreateGeographicCoordinateSystem("Bessel 1840", AngularUnit.Degrees, datum,
PrimeMeridian.Greenwich, new AxisInfo("Lon", AxisOrientationEnum.East),
new AxisInfo("Lat", AxisOrientationEnum.North));
//coordsys
//Collection<ProjectionParameter> parameters = new Collection<ProjectionParameter>(5);
List <ProjectionParameter> parameters = new List <ProjectionParameter>();
parameters.Add(new ProjectionParameter("latitude_of_origin", 0));
parameters.Add(new ProjectionParameter("central_meridian", 110));
parameters.Add(new ProjectionParameter("scale_factor", 0.997));
parameters.Add(new ProjectionParameter("false_easting", 3900000));
parameters.Add(new ProjectionParameter("false_northing", 900000));
IProjection projection = cFac.CreateProjection("Mercator_1SP", "Mercator_1SP", parameters);
IProjectedCoordinateSystem coordsys =
cFac.CreateProjectedCoordinateSystem("Makassar / NEIEZ", gcs, projection, LinearUnit.Metre,
new AxisInfo("East", AxisOrientationEnum.East),
new AxisInfo("North", AxisOrientationEnum.North));
Coordinatetransform = ctFac.CreateFromCoordinateSystems(gcs, coordsys);//gcsWGS84 -> gcenCsWGS84
//Apply transformation
transform = Coordinatetransform.MathTransform;
}
SharpMap.Geometries.Point p = new SharpMap.Geometries.Point(30.0, 20.0);
p = GeometryTransform.TransformPoint(p, transform);
/*IMPORTANTE
* foreach (Feature feature in input)
* {
* feature.row.Geometry = GeometryTransform.TransformGeometry(feature.row.Geometry, transform);
* //feature.row.Geometry = GeometryTransform.TransformMultiPolygon(feature.row.Geometry, transform);
* }
* IMPORTANTE*/
foreach (Feature f in input)
{
output.Add(f);//output = input
}
// Cosas a cambiar:
// Primero, la construccion del transform está siguiendo el ejemplo, pero hay que tener en cuenta los datos del xml y construirlo en consecuencia
// Segundo, el filtro debe retornar una NUEVA lista, y no modificar la inicial. Ahora modifica los valores de la lista inicial
// IMPORTANTE RETORNAR NUEVA LISTA OUTPUT <----------- FALTA POR HACER
#if TODO
// first time through, establish a working SRS for output data.
if (working_srs == null)
{
// first try to use the terrain SRS if so directed:
SpatialReference new_out_srs = getUseTerrainSRS() ? env.getTerrainSRS() : null;
if (new_out_srs == null)
{
// failing that, see if we have an SRS in a resource:
if (getSRS() == null && getSRSScript() != null)
{
ScriptResult r = env.getScriptEngine().run(getSRSScript(), env);
if (r.isValid())
{
setSRS(env.getSession().getResources().getSRS(r.ToString()));
}
else
{
env.getReport().error(r.ToString());
}
}
new_out_srs = srs;
}
// set the "working" SRS that will be used for all features passing though this filter:
working_srs = new_out_srs != null ? new_out_srs : env.getInputSRS();
// LOCALIZE points around a local origin (the working extent's centroid)
if (working_srs != null && getLocalize()) //&& env.getExtent().getArea() > 0.0 )
{
if (env.getCellExtent().getSRS().isGeographic() && env.getCellExtent().getWidth() > 179.0)
{
//NOP - no localization for big geog extent ... needs more thought perhaps
}
else
{
GeoPoint centroid0 = new_out_srs != null?
new_out_srs.transform(env.getCellExtent().getCentroid()) :
env.getCellExtent().getCentroid();
// we do want the localizer point on the surface if possible:
GeoPoint centroid = clampToTerrain(centroid0, env);
if (centroid == null)
{
centroid = centroid0;
}
Matrixd localizer;
// For geocentric datasets, we need a special localizer matrix:
if (working_srs.isGeocentric())
{
localizer = working_srs.getEllipsoid().createGeocentricInvRefFrame(centroid);
localizer.invert(localizer);
}
// For projected datasets, just a simple translation:
else
{
localizer = osg.Matrixd.translate(-centroid);
}
working_srs = working_srs.cloneWithNewReferenceFrame(localizer);
}
}
}
// we have to assign the output SRS on each pass
if (working_srs != null)
{
env.setOutputSRS(working_srs);
}
return(base.process(input, env));
#endif
//throw new NotImplementedException();
if (successor != null)
{
if (successor is FeatureFilter)
{
FeatureFilter filter = (FeatureFilter)successor;
FeatureList l = filter.process(output, env);
}
else if (successor is FragmentFilter)
{
FragmentFilter filter = (FragmentFilter)successor;
FragmentList l = filter.process(output, env);
}
}
return(output);
}
