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.circle3p;

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.GeometryManager;

import org.gvsig.fmap.geom.GeometryUtils;

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

import org.gvsig.fmap.geom.exception.CreateGeometryException;

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.DrawingStatus;

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.api.exceptions.StopServiceException;

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 Circle3PEditingProvider extends AbstractEditingProvider implements

    EditingProvider {

    protected FeatureStore featureStore;

    protected EditingServiceParameter firstPoint;

    protected EditingServiceParameter secondPoint;

    protected EditingServiceParameter thirdPoint;

    protected Map<EditingServiceParameter, Object> values;

    /**

     * Default constructor.

     *

     * @param services

     *            available services to this provider

     * @param parameters

     *            to create this provider

     */

    public Circle3PEditingProvider(ProviderServices services,

        DynObject parameters) {

        super(services);

        this.featureStore =

            (FeatureStore) parameters

                .getDynValue(EditingProviderFactory.FEATURE_STORE_FIELD);

        this.firstPoint =

            new DefaultEditingServiceParameter("first_point", "first_point",

                TYPE.POSITION);

        this.secondPoint =

            new DefaultEditingServiceParameter("second_point", "second_point",

                TYPE.POSITION);

        this.thirdPoint =

            new DefaultEditingServiceParameter("third_point", "third_point",

                TYPE.POSITION);

    }

    public EditingServiceParameter next() {

        if (values != null) {

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

                return firstPoint;

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

                return secondPoint;

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

                return thirdPoint;

            }

        }

        return null;

    }

    public DrawingStatus getDrawingStatus(Point mousePosition)

        throws DrawServiceException {

        DefaultDrawingStatus drawingStatus = 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) {

            Point firstPointValue = (Point) values.get(firstPoint);

            Point secondPointValue = (Point) values.get(secondPoint);

            Point thirdPointValue = (Point) values.get(thirdPoint);

            EditingProviderServices editingProviderServices =

                (EditingProviderServices) getProviderServices();

            if (firstPointValue != null && secondPointValue == null) {

                try {

                    int subtype =

                        editingProviderServices.getSubType(featureStore);

                    drawingStatus.addStatus(firstPointValue, auxiliaryPointSymbolEditing, "");

                    drawingStatus.addStatus(mousePosition, auxiliaryPointSymbolEditing, "");

                    Curve line =

                        GeometryUtils.createLine(firstPointValue,

                            mousePosition, subtype);

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

                } catch (Exception e) {

                    throw new DrawServiceException(e);

                }

            } else if (firstPointValue != null && secondPointValue != null && thirdPointValue == null) {

                try {

                    int subtype =

                        editingProviderServices.getSubType(featureStore);

                    Curve line1 =

                        GeometryUtils.createLine(firstPointValue,

                            secondPointValue, subtype);

                    drawingStatus.addStatus(line1, auxiliaryLineSymbolEditing, "");

                    Curve line2 =

                        GeometryUtils.createLine(secondPointValue,

                            mousePosition, subtype);

                    drawingStatus.addStatus(line2, auxiliaryLineSymbolEditing, "");

                    drawingStatus.addStatus(firstPointValue, auxiliaryPointSymbolEditing, "");

                    drawingStatus.addStatus(secondPointValue, auxiliaryPointSymbolEditing, "");

                    drawingStatus.addStatus(mousePosition, auxiliaryPointSymbolEditing, "");

                    Point midPointA = GeometryUtils.getMidPoint(firstPointValue, secondPointValue, subtype);

                    Point midPointB = GeometryUtils.getMidPoint(secondPointValue, mousePosition, subtype);

                    Point center =

                        editingProviderServices.getCenter(firstPointValue,

                            secondPointValue, mousePosition, subtype);

                    Curve midPointLine1 = 

                        GeometryUtils.createLine(midPointA,

                            center, subtype);

                    drawingStatus.addStatus(midPointLine1, auxiliaryLineSymbolEditing, "");

                    Curve midPointLine2 = 

                        GeometryUtils.createLine(midPointB,

                            center, subtype);

                    drawingStatus.addStatus(midPointLine2, auxiliaryLineSymbolEditing, "");

                    drawingStatus.addStatus(midPointA, auxiliaryPointSymbolEditing, "");

                    drawingStatus.addStatus(midPointB, auxiliaryPointSymbolEditing, "");

                    double radius = center.distance(firstPointValue);

                    addTemporaryGeometryToDrawingStatus(drawingStatus, subtype, center, radius);

                    drawingStatus.addStatus(center, auxiliaryPointSymbolEditing, "");

                } catch (Exception e) {

                    throw new DrawServiceException(e);

                }

            }

        }

        return drawingStatus;

    }

    /**

     * @param drawingStatus

     * @param subtype

     * @param center

     * @param radius

     * @throws CreateGeometryException

     */

    protected void addTemporaryGeometryToDrawingStatus(DefaultDrawingStatus drawingStatus, int subtype, Point center, double radius)

        throws CreateGeometryException {

        EditingProviderManager editingProviderManager =

            EditingProviderLocator.getProviderManager();

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

        GeometryManager geomManager = GeometryLocator.getGeometryManager();

        Circle circle = (Circle)geomManager.create(Geometry.TYPES.CIRCLE, subtype);

        circle.setPoints(center, radius);

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

    }

    public void stop() throws StopServiceException {

        if (values != null) {

            values.clear();

        }

    }

    public List<EditingServiceParameter> getParameters() {

        List<EditingServiceParameter> parameters =

            new ArrayList<EditingServiceParameter>();

        parameters.add(firstPoint);

        parameters.add(secondPoint);

        parameters.add(thirdPoint);

        return parameters;

    }

    @Override

    public void setValue(EditingServiceParameter parameter, Object value) throws InvalidEntryException {

        validateAndInsertValue(parameter, value);

    }

    @Override

    public void setValue(Object value) throws InvalidEntryException {

        EditingServiceParameter parameter = next();

        validateAndInsertValue(parameter, value);

    }

    private void validateAndInsertValue(EditingServiceParameter parameter,

        Object value) throws InvalidEntryException {

        if (parameter == firstPoint) {

            if (value instanceof Point) {

                values.put(parameter, value);

                return;

            }

        } else if (parameter == secondPoint) {

            if (value instanceof Point) {

                values.put(parameter, value);

                return;

            }

        } else if (parameter == thirdPoint) {

            if (value instanceof Point) {

                values.put(parameter, value);

                return;

            }

        }

        throw new InvalidEntryException(null);

    }

    public Geometry finish() throws FinishServiceException {

        if (values != null) {

            Point firstPointValue = (Point) values.get(firstPoint);

            Point secondPointValue = (Point) values.get(secondPoint);

            Point thirdPointValue = (Point) values.get(thirdPoint);

            EditingProviderServices editingProviderServices =

                (EditingProviderServices) getProviderServices();

            try {

                int subtype = editingProviderServices.getSubType(featureStore);

                Point center =

                    editingProviderServices.getCenter(firstPointValue,

                        secondPointValue, thirdPointValue, subtype);

                double radius = center.distance(firstPointValue);

                Circle circle =

                    editingProviderServices.createCircle(center, radius,

                        subtype);

                GeometryType geomType =

                    editingProviderServices.getGeomType(featureStore);

                if (geomType.isTypeOf(MULTISURFACE)) {

                    MultiSurface multiSurface;

                    multiSurface =

                        GeometryLocator.getGeometryManager()

                            .createMultiSurface(geomType.getSubType());

                    multiSurface.addSurface(circle);

                    return multiSurface;

                }

                return circle;

            } catch (Exception e) {

                throw new FinishServiceException(e);

            }

        }

        throw new FinishServiceException(null);

    }

    public void finishAndStore() throws FinishServiceException {

        Geometry circle = finish();

        EditingProviderServices editingProviderServices =

            (EditingProviderServices) getProviderServices();

        editingProviderServices.insertGeometryIntoFeatureStore(circle,

            featureStore);

    }

    public void start() throws StartServiceException {

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

    }

    public String getName() {

        return Circle3PEditingProviderFactory.PROVIDER_NAME;

    }

}