Application: gvSIG desktop

import java.util.List;

import java.util.Map;

import java.util.Set;

import java.util.prefs.Preferences;

import javax.swing.JButton;

import javax.swing.JComboBox;

import javax.swing.JToggleButton;

import javax.swing.tree.TreeModel;

import org.cresques.cts.IProjection;

import org.gvsig.fmap.mapcontrol.LayersTreeModel;

import org.slf4j.Logger;

import org.gvsig.fmap.mapcontext.rendering.symbols.ISymbol;

import org.gvsig.fmap.mapcontrol.AreaAndPerimeterCalculator;

import org.gvsig.fmap.mapcontrol.CompoundLayersTreeModel;

import org.gvsig.fmap.mapcontrol.MapControl;

import org.gvsig.fmap.mapcontrol.MapControlCreationException;

import org.gvsig.fmap.mapcontrol.MapControlCreationListener;

    }

    @Override

    public double perimeter(Geometry geom, IProjection proj, int distanceUnits) {

        AreaAndPerimeterCalculator calculator = new AreaAndPerimeterCalculator();

        return calculator.perimeter(geom, proj, distanceUnits);