Hi All,
I did a modification to MergeTowSelectedPolygonsPlugin to works with
more than two polygon.
Below the execute to use. It works with geometry union and in my case
is useful to merge more than 2 polygon
maybe something must be correct for undo because it works but it
doesn't recovery exactly to original state.
could you someone in development team check it and evalutate if could
be used to modify the function in oj core code?
thanks
luca
public boolean execute(PlugInContext context) throws Exception{
Collection features =
context.getWorkbenchContext().getLayerViewPanel().getSelectionManager().getFeaturesWithSelectedItems();
Feature mergedF = (Feature) ((ArrayList) features).get(0);
ArrayList fToDelete = new ArrayList();
for (int j = 1 ; j < features.size() ; j++) {
Geometry g = ((Feature) ((ArrayList)
features).get(j)).getGeometry();
if (!(g instanceof Polygon)) continue;
mergedF.setGeometry((Geometry)mergedF.getGeometry().union (g));
fToDelete.add((Feature) ((ArrayList) features).get(j));
}
//-- merge using an edit transaction to enable undo
ArrayList fToEdit = new ArrayList();
fToEdit.add(mergedF);
Map layer2FeatList = LayerTools.getLayer2FeatureMap(fToEdit,
context);
Layer[] layersWithFeatures =
(Layer[])layer2FeatList.keySet().toArray(new Layer[0]);
EditTransaction edtr = new
EditTransaction(fToEdit,"setgeom",layersWithFeatures[0],true,false,context.getLayerViewPanel());
Geometry g = mergedF.getGeometry();
edtr.setGeometry(mergedF,g);
edtr.commit();
edtr.clearEnvelopeCaches();
//-- delete other feature
FeatureCollectionTools.deleteFeatures(fToDelete,context);
return true;
}
luca marletta
www.beopen.it
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