override public Properties getProperties() { Properties p = base.getProperties(); if (Localize != DEFAULT_LOCALIZE) { p.Add(new Property("localize", Localize)); } if (UseTerrainSrs != DEFAULT_USE_TERRAIN_SRS) { p.Add(new Property("use_terrain_srs", UseTerrainSrs)); } if (TranslateScript != null) { p.Add(new Property("translate", TranslateScript.getCode())); } if (SrsScript != null) { p.Add(new Property("srs", SrsScript.getCode())); } return(p); }
override public FeatureList process(FeatureList input, FilterEnv env) { //first time through, establish a working SRS for output data. if (workingSrs == null) { //first try to use the terrain SRS if so directed: SpatialReference newOutSrs = UseTerrainSrs ? env.getTerrainSRS() : null; if (newOutSrs == null) { //failing that, see if we have an SRS in a resource: if (Srs == null && SrsScript != null) { //Console.WriteLine("Borrame" + SrsScript.getCode()); Srs = env.getSession().Resources.getSRS(SrsScript.getCode()); #if TODO_PH ScriptResult r = env.getScriptEngine().run(SrsScript, env); if (r.isValid()) { Srs = (env.getSession().Resources.getSRS(r.asString())); throw new NotImplementedException(); } else { env.getReport().error(r.asString()); } #endif } newOutSrs = Srs; } //set the "working" SRS that will be used for all features passing though this filter: workingSrs = newOutSrs != null ? newOutSrs : env.getInputSRS(); //LOCALIZE points arround a local origin (the working extent's centroid) if (workingSrs != null && Localize) { if (env.getCellExtent().getSRS().isGeographic() && env.getCellExtent().getWidth() > 179) { //NOP - no localization for big geog extent ... needs more thought perhaps } else { GeoPoint centroid0 = newOutSrs == null? newOutSrs.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; } Mogre.Matrix4 localizer = new Mogre.Matrix4(); //For geocentric datasets, we need a special localizer matrix: if (workingSrs.isGeocentric()) { localizer = workingSrs.getEllipsoid().createGeocentricInvRefFrame(centroid); localizer = localizer.Inverse(); } //For projected datasets, just a simple translation else { localizer.SetTrans(new Mogre.Vector3((float)centroid.X, (float)centroid.Y, (float)0.0)); } workingSrs = workingSrs.cloneWithNewReferenceFrame(localizer); } } } //we have to assing the output SRS on each pass if (workingSrs != null) { env.setOutputSRS(workingSrs); } return(base.process(input, env)); }