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.ellipse;

import java.awt.geom.Point2D;

import java.util.ArrayList;

import java.util.HashMap;

import java.util.List;

import java.util.Map;

import org.gvsig.euclidean.EuclideanLine2D;

import org.gvsig.euclidean.EuclideanManager;

import org.gvsig.fmap.dal.exception.DataException;

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.exception.CreateGeometryException;

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

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

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

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.locator.LocatorException;

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

import org.gvsig.tools.util.ToolsUtilLocator;

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

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

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 FilledEllipseCenterAxesEditingProvider extends AbstractEditingProvider implements

EditingProvider {

    protected EditingServiceParameter center;

    protected EditingServiceParameter pointAxisA;

    protected EditingServiceParameter lengthSemiaxisB;

    protected Map<EditingServiceParameter, Object> values;

    protected FeatureStore featureStore;

    public FilledEllipseCenterAxesEditingProvider(ProviderServices providerServices,

        DynObject parameters) {

        super(providerServices);

        this.featureStore =

            (FeatureStore) parameters

            .getDynValue(EditingProviderFactory.FEATURE_STORE_FIELD);

        this.center =

            new DefaultEditingServiceParameter("center",

                "center", EditingServiceParameter.TYPE.POSITION);

        this.pointAxisA =

            new DefaultEditingServiceParameter("point_A_axis",

                "point_A_axis", EditingServiceParameter.TYPE.POSITION);

        this.lengthSemiaxisB =

            new DefaultEditingServiceParameter("length_of_B_semiaxis",

                "length_of_B_semiaxis", EditingServiceParameter.TYPE.POSITION,

                EditingServiceParameter.TYPE.VALUE);

    }

    @Override

    public EditingServiceParameter next() {

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

            return center;

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

            return pointAxisA;

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

            return lengthSemiaxisB;

        }

        return null;

    }

    @Override

    public DrawingStatus getDrawingStatus(Point mousePosition)

        throws DrawServiceException {

        DefaultDrawingStatus drawingStatus = new DefaultDrawingStatus();

        EuclideanManager euclideanManager = ToolsUtilLocator.getEuclideanManager();

        EditingProviderManager editingProviderManager =

            EditingProviderLocator.getProviderManager();

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

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

        if (values != null) {

            EditingProviderServices editingServiceProvider =

                (EditingProviderServices) getProviderServices();

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

            Point pointAxis1Value = (Point) values.get(pointAxisA);

            if (centerValue != null) {

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

                if (pointAxis1Value == null) {

                    try {

                        int subtype =

                            editingServiceProvider.getSubType(featureStore);

                        Curve line =

                            editingServiceProvider.createLine(

                                centerValue, mousePosition, subtype);

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

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

                        return drawingStatus;

                    } catch (Exception e) {

                        throw new DrawServiceException(e);

                    }

                } else {

                    try {

                        int subtype =

                            editingServiceProvider.getSubType(featureStore);

                        drawingStatus.addStatus(pointAxis1Value, auxiliaryPointSymbolEditing, "");

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

                        Curve aAxis =

                            editingServiceProvider.createLine(

                                centerValue, pointAxis1Value,

                                subtype);

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

                        Point firstPointAxis1 = calculateOpositePointAxis(centerValue, pointAxis1Value, subtype);

                        EuclideanLine2D semiAxisA = euclideanManager.createLine2D(

                                centerValue.getX(), 

                                centerValue.getY(), 

                                pointAxis1Value.getX(),

                                pointAxis1Value.getY());

                        EuclideanLine2D semiAxisB = semiAxisA.getPerpendicular(centerValue.getX(), 

                                centerValue.getY());

                        Point2D pointAxisB = semiAxisB.getNearestPoint(mousePosition.getX(), mousePosition.getY());

                        double distance = semiAxisA.getDistance(mousePosition.getX(), mousePosition.getY());

                        addTemporaryGeometryToDrawingStatus(drawingStatus, firstPointAxis1, pointAxis1Value,

                            subtype, distance);

                        Line line = editingServiceProvider.createLine(

                                centerValue.getX(),

                                centerValue.getY(),

                                pointAxisB.getX(),

                                pointAxisB.getY(),

                                subtype);

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

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

                    } catch (Exception e) {

                        throw new DrawServiceException(e);

                    }

                }

            }

        }

        return drawingStatus;

    }

    /**

     * @param drawingStatus

     * @param firstPointAxis1Value

     * @param secondPointAxis1Value

     * @param subtype

     * @param distance

     * @throws CreateGeometryException

     */

    protected void addTemporaryGeometryToDrawingStatus(DefaultDrawingStatus drawingStatus, Point firstPointAxis1Value,

        Point secondPointAxis1Value, int subtype, double distance) throws CreateGeometryException {

        Ellipse ellipse = (Ellipse) GeometryLocator.getGeometryManager().create(Geometry.TYPES.ELLIPSE, subtype);

        ellipse.setPoints(firstPointAxis1Value, secondPointAxis1Value, distance);

        EditingProviderManager editingProviderManager = EditingProviderLocator.getProviderManager();

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

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

    }

    @Override

    public void stop() throws StopServiceException {

        if (values != null) {

            values.clear();

        }

    }

    @Override

    public List<EditingServiceParameter> getParameters() {

        List<EditingServiceParameter> list = new ArrayList<>();

        list.add(center);

        list.add(pointAxisA);

        list.add(lengthSemiaxisB);

        return list;

    }

    @Override

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

        validateAndInsertValue(parameter, value);

    }

    @Override

    public void setValue(Object value) throws InvalidEntryException {

        EditingServiceParameter parameter = this.next();

        validateAndInsertValue(parameter, value);

    }

    private void validateAndInsertValue(EditingServiceParameter param,

        Object value) throws InvalidEntryException {

        EuclideanManager euclideanManager = ToolsUtilLocator.getEuclideanManager();

        if ((param == center) || (param == pointAxisA)) {

            if (value instanceof Point) {

                values.put(param, value);

            }

        } else if (param == lengthSemiaxisB) {

            if (value instanceof Point) {

                Double length = null;

                try {

                    EditingProviderServices editingProviderServices =

                        (EditingProviderServices) getProviderServices();

                    Point centerValue =

                        (Point) values.get(center);

                    Point pointAxisAValue =

                        (Point) values.get(pointAxisA);

                    int subtype =

                        editingProviderServices.getSubType(featureStore);

                    EuclideanLine2D lineAxisA = euclideanManager.createLine2D(

                            centerValue.getX(),

                            centerValue.getY(),

                            pointAxisAValue.getX(),

                            pointAxisAValue.getY()

                    );

                    length = lineAxisA.getDistance(((Point)value).getX(), ((Point)value).getY());

                } catch (DataException e) {

                    throw new InvalidEntryException(e);

                }

                values.put(param, length);

            } else if (value instanceof Double) {

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

                    values.put(param, value);

                }

            }

        }

    }

    @Override

    public Geometry finish() throws FinishServiceException {

        if (values != null) {

            EditingProviderServices editingProviderServices =

                (EditingProviderServices) getProviderServices();

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

            Point pointAxis1Value = (Point) values.get(pointAxisA);

            double lengthSemiaxis2Value = (Double) values.get(lengthSemiaxisB);

            if ((center != null)

                && (pointAxis1Value != null) && (lengthSemiaxis2Value > 0)) {

                try {

                    int subtype = editingProviderServices.getSubType(featureStore);

                    GeometryType storeGeomType = editingProviderServices.getGeomType(featureStore);

                    Ellipse ellipse =

                        (Ellipse) GeometryLocator.getGeometryManager().create(Geometry.TYPES.ELLIPSE, subtype);

                    Point firstPointAxis = calculateOpositePointAxis(centerValue, pointAxis1Value, subtype);

                    ellipse.setPoints(firstPointAxis, pointAxis1Value, lengthSemiaxis2Value);

                    if (storeGeomType.isTypeOf(MULTISURFACE)) {

                        MultiSurface multisurface;

                        multisurface =

                            GeometryLocator.getGeometryManager().createMultiSurface(

                                storeGeomType.getSubType());

                        multisurface.addSurface((Ellipse) ellipse);

                        return multisurface;

                    }

                    return ellipse;

                } catch (Exception e) {

                    throw new FinishServiceException(e);

                }

            }

        }

        return null;

    }

    protected Point calculateOpositePointAxis(Point centerValue, Point pointAxis1Value, int subtype) throws CreateGeometryException, LocatorException {

        Point oppositePointAxis = (Point)GeometryLocator.getGeometryManager().create(Geometry.TYPES.POINT, subtype);

        oppositePointAxis.setX(centerValue.getX()-(pointAxis1Value.getX()-centerValue.getX()));

        oppositePointAxis.setY(centerValue.getY()-(pointAxis1Value.getY()-centerValue.getY()));

        return oppositePointAxis;

    }

    @Override

    public void finishAndStore() throws FinishServiceException {

        EditingProviderServices editingProviderServices =

            (EditingProviderServices) getProviderServices();

        Geometry geometry = finish();

        editingProviderServices.insertGeometryIntoFeatureStore(geometry,

            featureStore);

    }

    @Override

    public void start() throws StartServiceException {

        values = new HashMap<>();

    }

    @Override

    public String getName() {

        return FilledEllipseCenterAxesEditingProviderFactory.PROVIDER_NAME;

    }

}