Application: gvSIG desktop

/* gvSIG. Geographic Information System of the Valencian Government

 *

 * Copyright (C) 2007-2008 Infrastructures and Transports Department

 * of the Valencian Government (CIT)

 * 

 * 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.

 * 

 */

package org.gvsig.fmap.geom.primitive.impl;

import java.awt.Rectangle;

import java.awt.Shape;

import java.awt.geom.AffineTransform;

import java.awt.geom.PathIterator;

import java.awt.geom.Rectangle2D;

import org.cresques.cts.ICoordTrans;

import org.cresques.cts.IProjection;

import org.gvsig.fmap.geom.DirectPosition;

import org.gvsig.fmap.geom.Geometry;

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

import org.gvsig.fmap.geom.handler.AbstractHandler;

import org.gvsig.fmap.geom.handler.FinalHandler;

import org.gvsig.fmap.geom.handler.Handler;

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

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

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

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

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

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

/**

 * 2D point implementation.

 * 

 * @author Vicente Caballero Navarro

 * @author gvSIG team

 */

public class Point2D extends AbstractPrimitive implements Point, DirectPosition {

        private static final long serialVersionUID = 1836257305083881299L;

    protected static final String COORDINATES_FIELD = "coordinates";

    protected double x;

    protected double y;

    /**

     * The constructor with the GeometryType like and argument

     * is used by the {@link GeometryType}{@link #create()} to create the

     * geometry

     * 

     * @param type

     *            The geometry type

     */

    public Point2D(GeometryType geometryType) {

            super(geometryType, null, null);

        this.x = 0.0d;

        this.y = 0.0d;

    }

    /**

     * Constructor used in the {@link Geometry#cloneGeometry()} method

     */

    Point2D(GeometryType geometryType, String id, IProjection projection,

        double x, double y) {

        super(geometryType, id, projection);

        this.x = x;

        this.y = y;

    }

    public Point2D(double x, double y) {

        super(TYPES.POINT, SUBTYPES.GEOM2D);

        this.x = x;

        this.y = y;

    }

    public Point2D(GeometryType geometryType, double x, double y) {

        super(geometryType, null, null);

        this.x = x;

        this.y = y;

    }

    public Point2D(int type, int subtype) {

        super(type, subtype);

        this.x = 0.0d;

        this.y = 0.0d;

    }

    public Point2D(java.awt.geom.Point2D point) {

        super(TYPES.POINT, SUBTYPES.GEOM2D);

        this.x = point.getX();

        this.y = point.getY();

    }

    /**

     * Aplica la transformaci?nn de la matriz de transformaci?n que se pasa como

     * par?metro.

     * 

     * @param at

     *            Matriz de transformaci?n.

     */

    public void transform(AffineTransform at) {

        if (at == null) {

            return;

        }

        double[] coordinates = getCoordinates();

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

        setCoordinates(coordinates);

    }

    public boolean contains(double x, double y) {

        if ((this.x == x) || (this.y == y)) {

            return true;

        } else {

            return false;

        }

    }

    public boolean contains(double x, double y, double w, double h) {

        return false;

    }

    public boolean intersects(double x, double y, double w, double h) {

        Rectangle2D.Double rAux = new Rectangle2D.Double(x, y, w, h);

        return rAux.contains(this.x, this.y);

    }

    public Rectangle getBounds() {

        return new Rectangle((int) x, (int) y, 0, 0);

    }

    public double getX() {

        return x;

    }

    public double getY() {

        return y;

    }

    public boolean contains(java.awt.geom.Point2D p) {

        return false;

    }

    public Rectangle2D getBounds2D() {

        return new Rectangle2D.Double(x - 0.01, y - 0.01, 0.02, 0.02);

    }

    public boolean contains(Rectangle2D r) {

        return false;

    }

    public boolean intersects(Rectangle2D r) {

        return r.contains(x, y);

    }

    public Shape getShape(AffineTransform affineTransform) {

        return this;

    }

    public PathIterator getPathIterator(AffineTransform at) {

        return new PointIterator(getPoint2D(), at);

    }

    public PathIterator getPathIterator(AffineTransform at, double flatness) {

        return new PointIterator(getPoint2D(), at);

    }

    private java.awt.geom.Point2D getPoint2D() {

        return new java.awt.geom.Point2D.Double(x, y);

    }

    public int getShapeType() {

        return TYPES.POINT;

    }

    public FShape cloneFShape() {

        return new Point2D(getGeometryType(), id, projection, x, y);

    }

    public void reProject(ICoordTrans ct) {

        java.awt.geom.Point2D p = getPoint2D();

        try {

            p = ct.convert(p, p);

            this.x = p.getX();

            this.y = p.getY();

        } catch (Exception exc) {

            /*

             * This can happen when the reprojection lib is unable

             * to reproject (for example the source point

             * is out of the valid range and some computing

             * problem happens)

             */

            throw new ReprojectionRuntimeException(

                ct.getPOrig(), ct.getPDest(), getPoint2D(), exc);

        }

    }

    public Handler[] getStretchingHandlers() {

        return new Handler[] { new PointHandler(0, x, y, this) };

    }

    public Handler[] getSelectHandlers() {

        return new Handler[] { new PointHandler(0, x, y, this) };

    }

    /**

     * 

     * @author Vicente Caballero Navarro

     * @author gvSIG team

     */

    class PointHandler extends AbstractHandler implements FinalHandler {

        private final Point gvSIGPoint;

        public PointHandler(int i, double x, double y, Point gvSIGPoint) {

            this.gvSIGPoint = gvSIGPoint;

            point = new java.awt.geom.Point2D.Double(x, y);

            index = i;

        }

        public void move(double movex, double movey) {

            gvSIGPoint.setX(gvSIGPoint.getX() + movex);

            gvSIGPoint.setY(gvSIGPoint.getY() + movey);

        }

        public void set(double setx, double sety) {

            gvSIGPoint.setX(setx);

            gvSIGPoint.setY(sety);

        }

    }

    public int getDimension() {

        return 2;

    }

    public Envelope getEnvelope() {

        return new Envelope2D(x - 0.01, y - 0.01, x + 0.02, y + 0.02);

    }

    public GeneralPathX getGeneralPath() {

        return null;

    }

    public DirectPosition getDirectPosition() {

        return this;

    }

    public double getOrdinate(int dim) {

        if (dim == Geometry.DIMENSIONS.X) {

            return getX();

        } else

            if (dim == Geometry.DIMENSIONS.Y) {

                return getY();

            } else {

                return 0;

            }

    }

    public boolean equals(Object other) {

        if (!super.equals(other)) {

            return false;

        }

        Point2D pother = (Point2D) other;

        if (Math.abs(this.getX() - pother.getX()) > 0.0000001) {

            return false;

        }

        if (Math.abs(this.getY() - pother.getY()) > 0.0000001) {

            return false;

        }

        return true;

    }

    public double[] getCoordinates() {

        return new double[] { x, y };

    }

    public double getCoordinateAt(int dimension) {

        switch (dimension) {

        case Geometry.DIMENSIONS.X:

            return x;

        case Geometry.DIMENSIONS.Y:

            return y;

        default:

            throw new ArrayIndexOutOfBoundsException(dimension);

        }

    }

    public void setCoordinateAt(int dimension, double value) {

        switch (dimension) {

        case Geometry.DIMENSIONS.X:

            this.x = value;

            break;

        case Geometry.DIMENSIONS.Y:

            this.y = value;

            break;

        default:

            throw new ArrayIndexOutOfBoundsException(dimension);

        }

    }

    public void setCoordinates(double[] values) {

        this.x = values[Geometry.DIMENSIONS.X];

        this.y = values[Geometry.DIMENSIONS.Y];

    }

    public void setX(double x) {

        this.x = x;

    }

    public void setY(double y) {

        this.y = y;

    }

    public String toString() {

        StringBuffer buffer = new StringBuffer();

        double[] coordinates = getCoordinates();

        buffer.append(getFullTypeName()).append("(").append(coordinates[0]);

        for (int i = 1; i < coordinates.length; i++) {

            buffer.append(",").append(coordinates[i]);

        }

        buffer.append(")");

        return buffer.toString();

    }

    protected String getFullTypeName() {

        return "Point2D";

    }

    public int getType() {

        return TYPES.POINT;

    }

}