Application: gvSIG desktop

/* gvSIG. Desktop Geographic Information System.

 *

 * Copyright ? 2007-2015 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.fmap.geom.jts.primitive.point;

import java.awt.geom.AffineTransform;

import java.awt.geom.PathIterator;

import com.vividsolutions.jts.geom.Coordinate;

import org.cresques.cts.IProjection;

import org.gvsig.fmap.geom.Geometry;

import org.gvsig.fmap.geom.GeometryException;

import org.gvsig.fmap.geom.GeometryLocator;

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

import org.gvsig.fmap.geom.jts.aggregate.MultiPoint2D;

import org.gvsig.fmap.geom.jts.gputils.DefaultGeneralPathX;

import org.gvsig.fmap.geom.jts.gputils.GeneralPathXIterator;

import org.gvsig.fmap.geom.jts.primitive.curve.circumference.Circumference2D;

import org.gvsig.fmap.geom.operation.GeometryOperationException;

import org.gvsig.fmap.geom.operation.GeometryOperationNotSupportedException;

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

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

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

/**

 * @author fdiaz

 *

 */

public class Point2D extends AbstractPoint {

    /**

     *

     */

    private static final long serialVersionUID = -5486980182751169991L;

    /**

     *

     */

    public Point2D(IProjection proj, Coordinate coordinates) {

        super(Geometry.SUBTYPES.GEOM2D, coordinates);

        this.setProjection(proj);

    }

    /**

     *

     */

    public Point2D() {

        this(null, new Coordinate(0, 0));

    }

    /**

    *

    */

    public Point2D(double x, double y) {

        this(null, new Coordinate(x, y));

    }

    public Point2D(IProjection proj, double x, double y) {

        this(proj, new Coordinate(x, y));

    }

    /*

     * (non-Javadoc)

     *

     * @see org.gvsig.fmap.geom.Geometry#cloneGeometry()

     */

    public Point cloneGeometry() {

        return new Point2D(this.getProjection(), (Coordinate) this.coordinate.clone());

    }

    /*

     * (non-Javadoc)

     *

     * @see org.gvsig.fmap.geom.Geometry#getDimension()

     */

    public int getDimension() {

        return 2;

    }

    /*

     * (non-Javadoc)

     *

     * @see org.gvsig.fmap.geom.Geometry#getGeometryType()

     */

    public GeometryType getGeometryType() {

        try {

            return GeometryLocator.getGeometryManager().getGeometryType(Geometry.TYPES.POINT, Geometry.SUBTYPES.GEOM2D);

        } catch (Exception e) {

            return null;

        }

    }

    /*

     * (non-Javadoc)

     *

     * @see org.gvsig.fmap.geom.jts.GeometryJTS#is3D()

     */

    public boolean is3D() {

        return false;

    }

    /* (non-Javadoc)

     * @see org.gvsig.fmap.geom.jts.primitive.point.PointJTS#setJTSCoordinate(com.vividsolutions.jts.geom.Coordinate)

     */

    public void setJTSCoordinate(Coordinate coordinate) {

        this.coordinate = coordinate;

    }

    /*

     * (non-Javadoc)

     *

     * @see org.gvsig.fmap.geom.Geometry#getGeneralPath()

     */

    public GeneralPathX getGeneralPath() {

        return new DefaultGeneralPathX(new PointIterator(null),false,0);

    }

    /*

     * (non-Javadoc)

     *

     * @see

     * org.gvsig.fmap.geom.Geometry#getPathIterator(java.awt.geom.AffineTransform

     * )

     */

    public PathIterator getPathIterator(AffineTransform at) {

        PointIterator pi = new PointIterator(at);

        return pi;

    }

    public class PointIterator extends GeneralPathXIterator {

        /** Transform applied on the coordinates during iteration */

        private AffineTransform at;

        /** True when the point has been read once */

        private boolean done;

        /**

         * Creates a new PointIterator object.

         *

         * @param p The polygon

         * @param at The affine transform applied to coordinates during iteration

         */

        public PointIterator(AffineTransform at) {

            super(new GeneralPathX());

            if (at == null) {

                at = new AffineTransform();

            }

            this.at = at;

            done = false;

        }

        /**

         * Return the winding rule for determining the interior of the path.

         *

         * @return <code>WIND_EVEN_ODD</code> by default.

         */

        public int getWindingRule() {

            return PathIterator.WIND_EVEN_ODD;

        }

        /**

         * @see java.awt.geom.PathIterator#next()

         */

        public void next() {

            done = true;

        }

        /**

         * @see java.awt.geom.PathIterator#isDone()

         */

        public boolean isDone() {

            return done;

        }

        /**

         * @see java.awt.geom.PathIterator#currentSegment(double[])

         */

        public int currentSegment(double[] coords) {

            coords[0] = getX();

            coords[1] = getY();

            at.transform(coords, 0, coords, 0, 1);

            return PathIterator.SEG_MOVETO;

        }

        /* (non-Javadoc)

         * @see java.awt.geom.PathIterator#currentSegment(float[])

         */

        public int currentSegment(float[] coords) {

            coords[0] = (float) getX();

            coords[1] = (float) getY();

            at.transform(coords, 0, coords, 0, 1);

            return PathIterator.SEG_MOVETO;

        }

    }

    /* (non-Javadoc)

     * @see org.gvsig.fmap.geom.primitive.Line#toPoints()

     */

    public MultiPoint toPoints() throws GeometryException {

        MultiPoint multiPoint = new MultiPoint2D();

        multiPoint.addPoint(this);

        return multiPoint;

    }

    /* (non-Javadoc)

     * @see org.gvsig.fmap.geom.Geometry#offset(double)

     */

    public Geometry offset(double distance) throws GeometryOperationNotSupportedException, GeometryOperationException {

        return new Circumference2D((Point)this.cloneGeometry(), distance);

    }

    public String toString() {

        StringBuilder builder = new StringBuilder();

        builder.append("POINT (");

        for( int i=0; i<this.getDimension()-1; i++) {

            builder.append(this.getCoordinateAt(i));

            builder.append(" ");

        }

        builder.append(this.getCoordinateAt(this.getDimension()-1));

        builder.append(")");

        return builder.toString();

    }

    @Override

    public boolean equals(Object obj) {

        if( obj == null ) {

            return false;

        }

        Point other;

        try {

            other = (Point) obj;

        } catch(ClassCastException e) {

            return false;

        }

        if( this.getGeometryType().getSubType() != other.getGeometryType().getSubType() ) {

            return false;

        }

        if( this.coordinate.x != other.getX() ) {

            return false;

        }

        if( this.coordinate.y != other.getY() ) {

            return false;

        }

        return true;

    }

}