/*
* The Unified Mapping Platform (JUMP) is an extensible, interactive GUI
* for visualizing and manipulating spatial features with geometry and attributes.
*
* JUMP is Copyright (C) 2003 Vivid Solutions
*
* This program implements extensions to JUMP and is
* Copyright (C) 2004 Integrated Systems Analysts, Inc.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*
* For more information, contact:
*
* Integrated Systems Analysts, Inc.
* 630C Anchors St., Suite 101
* Fort Walton Beach, Florida
* USA
*
* (850)862-7321
*/
package org.openjump.core.ui.plugin.tools;
import java.util.Collection;
import java.util.Iterator;
import org.openjump.core.geomutils.GeoUtils;
import com.vividsolutions.jts.geom.CoordinateList;
import com.vividsolutions.jts.geom.Geometry;
import com.vividsolutions.jts.geom.GeometryFactory;
import com.vividsolutions.jts.geom.LineString;
import com.vividsolutions.jts.util.UniqueCoordinateArrayFilter;
import com.vividsolutions.jump.I18N;
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.workbench.WorkbenchContext;
import com.vividsolutions.jump.workbench.model.LayerManager;
import com.vividsolutions.jump.workbench.model.StandardCategoryNames;
import com.vividsolutions.jump.workbench.plugin.AbstractPlugIn;
import com.vividsolutions.jump.workbench.plugin.EnableCheckFactory;
import com.vividsolutions.jump.workbench.plugin.MultiEnableCheck;
import com.vividsolutions.jump.workbench.plugin.PlugInContext;
import com.vividsolutions.jump.workbench.ui.MenuNames;
import com.vividsolutions.jump.workbench.ui.MultiInputDialog;
public class ConvexHullPlugIn extends AbstractPlugIn {
private WorkbenchContext workbenchContext;
private String TOLERANCE = I18N.get("org.openjump.core.ui.plugin.tools.ConvexHullPlugIn.Tolerance");
private MultiInputDialog dialog;
private double blendTolerance = 0.1;
private boolean exceptionThrown = false;
private String sConvexHull = I18N.get("org.openjump.core.ui.plugin.tools.ConvexHullPlugIn.Convex-Hull");
public void initialize(PlugInContext context) throws Exception
{
workbenchContext = context.getWorkbenchContext();
context.getFeatureInstaller().addMainMenuItemWithJava14Fix(this,
new String[] {MenuNames.TOOLS, MenuNames.TOOLS_ANALYSIS},
getName() /*+ "{pos:3}"*/,
false, null, this.createEnableCheck(workbenchContext));
}
public String getName() {
return sConvexHull;
}
public boolean execute(final PlugInContext context) throws Exception
{
TOLERANCE = I18N.get("org.openjump.core.ui.plugin.tools.ConvexHullPlugIn.Tolerance");
sConvexHull = I18N.get("org.openjump.core.ui.plugin.tools.ConvexHullPlugIn.Convex-Hull");
reportNothingToUndoYet(context);
Collection selectedFeatures = context.getLayerViewPanel().getSelectionManager().getFeaturesWithSelectedItems();
Collection selectedCategories = context.getLayerNamePanel().getSelectedCategories();
LayerManager layerManager = context.getLayerManager();
FeatureSchema featureSchema = new FeatureSchema();
featureSchema.addAttribute("GEOMETRY", AttributeType.GEOMETRY);
CoordinateList coords = new CoordinateList();
for (Iterator j = selectedFeatures.iterator(); j.hasNext();)
{
Feature f = (Feature) j.next();
Geometry geo = f.getGeometry();
UniqueCoordinateArrayFilter filter = new UniqueCoordinateArrayFilter();
geo.apply(filter);
coords.add( filter.getCoordinates() ,false);
}
CoordinateList convexHullCoords = GeoUtils.ConvexHullWrap( coords );
LineString convexHull = new GeometryFactory().createLineString(convexHullCoords.toCoordinateArray());
Feature newFeature = new BasicFeature(featureSchema);
newFeature.setGeometry(convexHull);
FeatureDataset newFeatures = new FeatureDataset(featureSchema);
newFeatures.add(newFeature);
layerManager.addLayer(selectedCategories.isEmpty()
? StandardCategoryNames.WORKING
: selectedCategories.iterator().next().toString(),
layerManager.uniqueLayerName(sConvexHull),
newFeatures);
layerManager.getLayer(0).setFeatureCollectionModified(true);
layerManager.getLayer(0).setEditable(true);
return true;
}
public MultiEnableCheck createEnableCheck(final WorkbenchContext workbenchContext) {
EnableCheckFactory checkFactory = new EnableCheckFactory(workbenchContext);
return new MultiEnableCheck()
.add(checkFactory.createWindowWithLayerViewPanelMustBeActiveCheck())
.add(checkFactory.createAtLeastNFeaturesMustHaveSelectedItemsCheck(1));
}
}