Hi all,
here 2 simple plugins.
MergeAllGeometryLayersPlugIn
Merge all Polygons for all selected layers into a single MultiPolygon
Quite efficient because use a trick from JTS suggestion create a
createGeometryCollection and perform a buffer(0.0) on it
From3Dto2DPlugIn
Flat a 3D geometry; sometimes it's needed also the 2D :-)
I attach them in java code because is for developers but if you prefer
I'll do jar directly, with souce
luca
luca marletta
www.beopen.it
/* Merge all Polygons for all selected layers into a single MultiPolygon
* Quite efficient because use a trick from JTS suggestion
* create a createGeometryCollection and perform a buffer(0.0) on it
* @author <a href="mailto:i...@beopen.it">Luca Marletta</a> beOpen
*/
package it.beopen.dbtopo.Tools;
import java.util.List;
import com.vividsolutions.jts.geom.Geometry;
import com.vividsolutions.jts.geom.GeometryFactory;
import com.vividsolutions.jts.geom.Polygon;
import com.vividsolutions.jump.feature.AttributeType;
import com.vividsolutions.jump.feature.BasicFeature;
import com.vividsolutions.jump.feature.Feature;
import com.vividsolutions.jump.feature.FeatureDataset;
import com.vividsolutions.jump.feature.FeatureSchema;
import com.vividsolutions.jump.task.TaskMonitor;
import com.vividsolutions.jump.workbench.model.Layer;
import com.vividsolutions.jump.workbench.plugin.MultiEnableCheck;
import com.vividsolutions.jump.workbench.plugin.PlugInContext;
import com.vividsolutions.jump.workbench.plugin.ThreadedBasePlugIn;
public class MergeAllGeometryLayersPlugIn extends ThreadedBasePlugIn {
public MergeAllGeometryLayersPlugIn() { }
public void initialize(PlugInContext context) throws Exception {
context.getFeatureInstaller().addMainMenuItem( this, new String[] { "DBTopo", "Tools", "Simplify" },
"Merge all geometry",
false, null, new MultiEnableCheck()
.add(context.getCheckFactory().createTaskWindowMustBeActiveCheck())
.add(context.getCheckFactory().createAtLeastNLayersMustExistCheck(1)) );
}
public boolean execute(PlugInContext context) {
reportNothingToUndoYet(context);
if (context.getSelectedLayers().length == 0){
return false;
}
return true;
}
public void run(TaskMonitor monitor, PlugInContext context) throws Exception {
FeatureSchema fs = new FeatureSchema();
fs.addAttribute("GEOMETRY", AttributeType.GEOMETRY);
FeatureDataset mergedAllLFC = new FeatureDataset(fs);
Layer[] selectedLayers = context.getSelectedLayers();
Geometry[] allLayerGeom = new Geometry[selectedLayers.length];
for (int i = 0; i < selectedLayers.length; i++) {
List fc = selectedLayers[i].getFeatureCollectionWrapper().getFeatures();
Geometry[] layerGeom = new Geometry[fc.size()];
for (int j = 0 ; j < fc.size() ; j++) {
Geometry g = ((Feature) fc.get(j)).getGeometry();
if (!(g instanceof Polygon)) continue;
layerGeom[j] = g;
}
allLayerGeom[i] = new GeometryFactory().createGeometryCollection(layerGeom).buffer(0.0);
}
BasicFeature mergedAllLayerGeom = new BasicFeature(fs);
mergedAllLayerGeom.setGeometry( new GeometryFactory().createGeometryCollection(allLayerGeom).buffer(0.0) );
mergedAllLFC.add(mergedAllLayerGeom);
context.getLayerManager().addLayer("DBTopo_temp", "all_geom_merged" , mergedAllLFC);
}
}
package it.beopen.dbtopo.Elev;
import com.vividsolutions.jump.workbench.plugin.ThreadedPlugIn;
import java.util.Iterator;
import com.vividsolutions.jts.geom.*;
import com.vividsolutions.jump.feature.Feature;
import com.vividsolutions.jump.feature.FeatureCollection;
import com.vividsolutions.jump.task.TaskMonitor;
import com.vividsolutions.jump.workbench.model.Layer;
import com.vividsolutions.jump.workbench.plugin.PlugInContext;
import com.vividsolutions.jump.workbench.plugin.MultiEnableCheck;
/**
*
*/
public class From3Dto2DPlugIn implements ThreadedPlugIn {
protected static String name = "From3Dto2D";
private Layer layer;
public From3Dto2DPlugIn() {
}
public void initialize(PlugInContext context) throws Exception {
context.getFeatureInstaller().addMainMenuItem(this,new String[] { "DBTopo", "3D" },
"flat geometry to 2D",
false, null, new MultiEnableCheck()
.add(context.getCheckFactory().createTaskWindowMustBeActiveCheck())
.add(context.getCheckFactory().createAtLeastNLayersMustExistCheck(1)));
}
public boolean execute(PlugInContext context) {
// reportNothingToUndoYet(context);
//
// layer = context.getCandidateLayer(0);
return true;
}
private void reportNothingToUndoYet(PlugInContext context) {
// TODO Auto-generated method stub
}
private void initDialog(PlugInContext context) {
}
public void run(TaskMonitor monitor, PlugInContext context) throws Exception {
monitor.allowCancellationRequests();
monitor.report("Converting geometry to 2D...");
if (context.getSelectedLayer(0) == null ) context.getWorkbenchFrame().warnUser("At least 1 layer must be selected");
FeatureCollection fc = context.getSelectedLayer(0).getFeatureCollectionWrapper();
// FeatureSchema fs = fc.getFeatureSchema();
for (Iterator i = fc.iterator(); i.hasNext();) {
Feature f = (Feature)i.next();
to2D( f.getGeometry());
}
}
private Geometry to2D(Geometry geometry) {
geometry.apply(new CoordinateFilter() {
public void filter(Coordinate coordinate) {
// coordinate.setCoordinate((coordinate.x, coordinate.y), 2);
coordinate.x = coordinate.x;
coordinate.y = coordinate.y;
coordinate.z = Double.NaN;
}
});
return geometry;
}
@Override
public String getName() {
// TODO Auto-generated method stub
return null;
}
}
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