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Utilities for Tokyo Datum, WGS84 and Japan Plane Rectangular

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package org.nkjmlab.gis.datum.jprect.util;

import org.nkjmlab.gis.datum.jprect.JapanPlaneRectangular;
import org.nkjmlab.gis.datum.jprect.LatLonWithZone;
import org.nkjmlab.gis.datum.jprect.XYWithZone;
import org.nkjmlab.gis.datum.jprect.helper.XY2LatLonHelper;

/**
 *
 * @author Yuu NAKAJIMA
 */
public class XYUtils {

  /**
   *
   * @param xy 平面直角座標系の系番号付きの平面直角座標系XY
   * @return 平面直角座標系の系番号付きの緯度経度
   */
  public static LatLonWithZone toLatLonWithZone(XYWithZone xy) {
    return new LatLonWithZone(toLat(xy), toLon(xy), xy.getBasis());
  }

  public static double toLat(XYWithZone xy) {
    LatLonWithZone origin =
        JapanPlaneRectangular.getOrigin(xy.getBasis().getZoneId(), xy.getDetum());
    return XY2LatLonHelper.toLatitude(xy.getX(), xy.getY(), origin.getLat(), origin.getLon());
  }

  public static double toLon(XYWithZone xy) {
    LatLonWithZone origin =
        JapanPlaneRectangular.getOrigin(xy.getBasis().getZoneId(), xy.getDetum());
    return XY2LatLonHelper.toLongitude(xy.getX(), xy.getY(), origin.getLat(), origin.getLon());
  }

}