Application: gvSIG desktop » gvSIG tools: Vector editing

/**

 * gvSIG. Desktop Geographic Information System.

 *

 * Copyright ? 2007-2014 gvSIG Association

 *

 * 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., 51 Franklin Street, Fifth Floor, Boston,

 * MA  02110-1301, USA.

 *

 * For any additional information, do not hesitate to contact us

 * at info AT gvsig.com, or visit our website www.gvsig.com.

 */

package org.gvsig.vectorediting.lib.prov.circlecr;

import java.util.ArrayList;

import java.util.HashMap;

import java.util.List;

import java.util.Map;

import org.gvsig.fmap.dal.feature.FeatureStore;

import org.gvsig.fmap.geom.Geometry;

import org.gvsig.fmap.geom.GeometryLocator;

import org.gvsig.fmap.geom.aggregate.MultiSurface;

import org.gvsig.fmap.geom.primitive.Arc;

import org.gvsig.fmap.geom.primitive.Circle;

import org.gvsig.fmap.geom.primitive.Curve;

import org.gvsig.fmap.geom.primitive.Point;

import org.gvsig.fmap.geom.type.GeometryType;

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

import org.gvsig.tools.dynobject.DynObject;

import org.gvsig.tools.service.spi.ProviderServices;

import org.gvsig.vectorediting.lib.api.EditingServiceParameter;

import org.gvsig.vectorediting.lib.api.EditingServiceParameter.TYPE;

import org.gvsig.vectorediting.lib.api.exceptions.DrawServiceException;

import org.gvsig.vectorediting.lib.api.exceptions.FinishServiceException;

import org.gvsig.vectorediting.lib.api.exceptions.InvalidEntryException;

import org.gvsig.vectorediting.lib.api.exceptions.StartServiceException;

import org.gvsig.vectorediting.lib.spi.AbstractEditingProvider;

import org.gvsig.vectorediting.lib.spi.DefaultDrawingStatus;

import org.gvsig.vectorediting.lib.spi.DefaultEditingServiceParameter;

import org.gvsig.vectorediting.lib.spi.EditingProvider;

import org.gvsig.vectorediting.lib.spi.EditingProviderFactory;

import org.gvsig.vectorediting.lib.spi.EditingProviderLocator;

import org.gvsig.vectorediting.lib.spi.EditingProviderManager;

import org.gvsig.vectorediting.lib.spi.EditingProviderServices;

public class CircleCREditingProvider extends AbstractEditingProvider implements

EditingProvider {

    protected EditingServiceParameter center;

    protected EditingServiceParameter radius;

    protected Map<EditingServiceParameter, Object> values;

    protected FeatureStore featureStore;

    public CircleCREditingProvider(ProviderServices providerServices,

        DynObject parameters) {

        super(providerServices);

        this.featureStore =

            (FeatureStore) parameters

            .getDynValue(EditingProviderFactory.FEATURE_STORE_FIELD);

        this.center =

            new DefaultEditingServiceParameter("center", "center",

                TYPE.POSITION);

        this.radius =

            new DefaultEditingServiceParameter("radius", "radius",

                TYPE.POSITION, TYPE.VALUE);

    }

    public DefaultDrawingStatus getDrawingStatus(Point mousePosition)

        throws DrawServiceException {

        DefaultDrawingStatus geometries = new DefaultDrawingStatus();

        EditingProviderManager editingProviderManager =

            EditingProviderLocator.getProviderManager();

        ISymbol polygonSymbolEditing = editingProviderManager.getSymbol("polygon-symbol-editing");

        ISymbol auxiliaryLineSymbolEditing = editingProviderManager.getSymbol("auxiliary-line-symbol-editing");

        ISymbol auxiliaryPointSymbolEditing = editingProviderManager.getSymbol("auxiliary-point-symbol-editing");

        if ((values != null) && (values.get(center) != null)

            && (values.get(radius) == null)) {

            Point centerPoint = (Point) values.get(center);

            EditingProviderServices editingProviderServices =

                (EditingProviderServices) getProviderServices();

            try {

                int subtype = editingProviderServices.getSubType(featureStore);

                Curve line =

                    editingProviderServices.createLine(centerPoint,

                        mousePosition, subtype);

                Circle circle = editingProviderServices.createCircle(centerPoint, mousePosition.distance(centerPoint), subtype);

                geometries.addStatus(centerPoint, auxiliaryPointSymbolEditing, "");

                geometries.addStatus(line, auxiliaryLineSymbolEditing, "");

                geometries.addStatus(circle, polygonSymbolEditing, "");

            } catch (Exception e) {

                throw new DrawServiceException(e);

            }

            return geometries;

        }

        return null;

    }

    public EditingServiceParameter next() {

        if (values.get(center) == null) {

            return this.center;

        } else if (values.get(radius) == null) {

            return this.radius;

        }

        return null;

    }

    public void stop() {

        values.clear();

    }

    private void validateAndInsertValue(EditingServiceParameter param,

        Object value) throws InvalidEntryException {

        if (param == center) {

            if (value instanceof Point) {

                values.put(param, value);

                return;

            }

        } else if (param == radius) {

            if (value instanceof Point) {

                Double radiusValue = null;

                try {

                    radiusValue =

                        ((Point) value).distance((Point) values.get(center));

                } catch (Exception e) {

                    throw new InvalidEntryException(e);

                }

                if (radiusValue != null) {

                    values.put(param, radiusValue);

                    return;

                }

            } else if (value instanceof Double) {

                if ((((Double) value) - 0.01) > 0) {

                    values.put(param, value);

                    return;

                }

            }

        }

        throw new InvalidEntryException(null);

    }

    public List<EditingServiceParameter> getParameters() {

        List<EditingServiceParameter> list =

            new ArrayList<EditingServiceParameter>();

        list.add(center);

        list.add(radius);

        return list;

    }

    public void setValue(Object value) throws InvalidEntryException {

        EditingServiceParameter param = next();

        validateAndInsertValue(param, value);

    }

    public void finishAndStore() throws FinishServiceException {

        EditingProviderServices editingProviderServices =

            (EditingProviderServices) getProviderServices();

        Geometry geometry = finish();

        editingProviderServices.insertGeometryIntoFeatureStore(geometry,

            featureStore);

    }

    public Geometry finish() throws FinishServiceException {

        Point centerPoint = (Point) values.get(center);

        double radiusValue = (Double) values.get(radius);

        EditingProviderServices editingProviderServices =

            (EditingProviderServices) getProviderServices();

        try {

            int subtype = editingProviderServices.getSubType(featureStore);

            GeometryType storeGeomType =

                editingProviderServices.getGeomType(featureStore);

            Geometry geometry =

                editingProviderServices.createCircle(centerPoint, radiusValue,

                    subtype);

            if (storeGeomType.isTypeOf(MULTISURFACE)) {

                MultiSurface multisurface;

                multisurface =

                    GeometryLocator.getGeometryManager().createMultiSurface(

                        storeGeomType.getSubType());

                multisurface.addSurface((Circle) geometry);

                return multisurface;

            }

            return geometry;

        } catch (Exception e) {

            throw new FinishServiceException(e);

        }

    }

    public void start() throws StartServiceException {

        this.values = new HashMap<EditingServiceParameter, Object>();

    }

    public String getName() {

        return CircleCREditingProviderFactory.PROVIDER_NAME;

    }

}