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This geoLatte-geom library offers a geometry model that conforms to the OGC Simple Features for SQL specification.

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package org.geolatte.geom;

/**
 * A position in a cartesian coordinate reference system.
 *
 * @author Karel Maesen, Geovise BVBA
 *         creation-date: 2/19/14
 */
public class C2D extends Position {

    /**
     * Constructs an empty instance
     */
    public C2D() {
        super();
    }

    /**
     * Constructs an instance with the specified x (EASTING or WESTING) or y (NORTHING or SOUTHING) coordinates
     *
     * {@link org.geolatte.geom.crs.CoordinateReferenceSystem}, the 
     * @param x coordinate for axis in EAST or WEST direction
     * @param y coordinate for axis in NORTH or SOUTH direction
     */
    public C2D(double x, double y) {
        super(x, y);
    }

    protected C2D(double... coords) {
        super(coords);
    }

    @Override
    public int getCoordinateDimension() {
        return 2;
    }

    /**
     * Returns the coordinate for EAST (WEST) axis direction
     *
     * @return the coordinate for EAST (WEST) axis direction
     */
    public double getX() {
        return getCoordinate(0);
    }

    /**
     * Returns the coordinate for NORTH (SOUTH) axis direction
     *
     * @return the coordinate for NORTH (SOUTH) axis direction
     */
    public double getY() {
        return getCoordinate(1);
    }

}