Save selected building IDs as a txt file.

src/eu/simstadt/regionchooser/RegionChooserFX.java

 package eu.simstadt.regionchooser;
 
+import java.io.BufferedWriter;
+import java.io.File;
+import java.io.IOException;
 import java.nio.file.Files;
 import java.nio.file.Path;
 import java.nio.file.Paths;
@@ -14,6 +17,7 @@
 import javafx.scene.paint.Color;
 import javafx.scene.web.WebEngine;
 import javafx.scene.web.WebView;
+import javafx.stage.FileChooser;
 import javafx.stage.Stage;
 import javax.xml.stream.XMLStreamException;
 import netscape.javascript.JSObject;
@@ -66,34 +70,53 @@ public void downloadRegion(String wktPolygon) {
 		}
 
 		public int downloadRegionFromCityGML(String wktPolygon, String project, String citygml, JSObject featureOverlay)
-				throws SAXParseException, XMLStreamException, ParseException {
-			//			System.out.println("FROM JAVA : DO SOMETHING with " + wktPolygon + " from \n" + project + ">" + citygml);
+				throws SAXParseException, XMLStreamException, ParseException, IOException {
+			//FIXME: Why is this so slow?
 			SimStadtModel model = SimStadtProject.loadModelWithoutSchemaValidation(citygmlPath(project, citygml).toFile());
 			Geometry poly = wktReader.read(wktPolygon);
 			final GeometryFactory gf = new GeometryFactory();
-			//TODO: What's the easiest way to get WGS84 coordinates of building center?
-			for (Building building : model.getCityDoctorBuildings()) {
-				BoundingShape boundedBy = building.getCitygmlBuilding().getBoundedBy();
-				if (boundedBy != null) {
-					Envelope envelope = boundedBy.getEnvelope();
-					if (envelope != null) {
-						List<Double> l = envelope.getLowerCorner().getValue();
-						List<Double> h = envelope.getUpperCorner().getValue();
-						double x = (l.get(0) + h.get(0)) * 0.5;
-						double y = (l.get(1) + h.get(1)) * 0.5;
-						Coordinate coord = new Coordinate(x, y);
-						Point point = gf.createPoint(coord);
-						if (point.within(poly)) {
-							featureOverlay.call("addMarker", x, y, building.getGmlId());
-							System.out.println(building.getGmlId());
+
+			File buildingIdsFile = selectSaveFileWithDialog(project, citygml);
+			if (buildingIdsFile != null) {
+				BufferedWriter writer = Files.newBufferedWriter(buildingIdsFile.toPath());
+
+				//TODO: What's the easiest way to get WGS84 coordinates of building center?
+				for (Building building : model.getCityDoctorBuildings()) {
+					BoundingShape boundedBy = building.getCitygmlBuilding().getBoundedBy();
+					if (boundedBy != null) {
+						Envelope envelope = boundedBy.getEnvelope();
+						if (envelope != null) {
+							List<Double> l = envelope.getLowerCorner().getValue();
+							List<Double> h = envelope.getUpperCorner().getValue();
+							double x = (l.get(0) + h.get(0)) * 0.5;
+							double y = (l.get(1) + h.get(1)) * 0.5;
+							Coordinate coord = new Coordinate(x, y);
+							Point point = gf.createPoint(coord);
+							if (point.within(poly)) {
+								//featureOverlay.call("addMarker", x, y, building.getGmlId());
+								writer.write(building.getGmlId() + "\r\n");
+								System.out.println(building.getGmlId());
+							}
 						}
 					}
 				}
+				writer.close();
 			}
 
 			return model.getCityDoctorBuildings().size();
 		}
 
+		private File selectSaveFileWithDialog(String project, String citygml) {
+			Stage mainStage = (Stage) Browser.this.getScene().getWindow();
+			FileChooser fileChooser = new FileChooser();
+			fileChooser.setTitle("Save CITYGML ids");
+			fileChooser.setInitialDirectory(repo.resolve(project + ".simstadt").toFile());
+			fileChooser.setInitialFileName(citygml.split("\\.")[0] + "_selected_region");
+			FileChooser.ExtensionFilter extFilter = new FileChooser.ExtensionFilter("TXT files (*.txt)", "*.txt");
+			fileChooser.getExtensionFilters().add(extFilter);
+			return fileChooser.showSaveDialog(mainStage);
+		}
+
 		public boolean checkIfCityGMLSAreAvailable(String project, String citygml) {
 			return Files.isReadable(citygmlPath(project, citygml));
 		}

website/script/simstadt_openlayers.js

@@ -245,7 +245,7 @@ function downloadRegionFromCityGML(i) {
 		var end = new Date().getTime();
 		var time = end - start;
 		console.log('DL Execution time: ' + time);
-		$('#dataPanel').append("Imported buildings : " + buildings_count);
+//		$('#dataPanel').append("Imported buildings : " + buildings_count);
 		$("html").removeClass("wait");
 	}, 100);
 }
@@ -267,10 +267,10 @@ function displayInfo() {
 		var gsk3_coord = ol.proj.transform(coords[i], ol.proj.get('EPSG:4326'), ol.proj.get('EPSG:31467'))
 		gsk3_coords += "(" + gsk3_coord[0] + "," + gsk3_coord[1] + ")<br/>";
 	}
-	$('#dataPanel').append("WGS84 Coordinates<br/>");
-	$('#dataPanel').append(wgs84_coords + "<br/>\n");
-	$('#dataPanel').append("GSK3 Coordinates<br/>");
-	$('#dataPanel').append(gsk3_coords + "<br/>\n");
+//	$('#dataPanel').append("WGS84 Coordinates<br/>");
+//	$('#dataPanel').append(wgs84_coords + "<br/>\n");
+//	$('#dataPanel').append("GSK3 Coordinates<br/>");
+//	$('#dataPanel').append(gsk3_coords + "<br/>\n");
 	$('#dataPanel').append("Area" + "<br/>\n");
 	$('#dataPanel').append((Math.round(area / 1000) / 10).toString() + " ha<br/><br/>\n");
 	findIntersections();