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Utilities for Tokyo Datum, WGS84 and Japan Plane Rectangular
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package org.nkjmlab.gis.datum;

import java.text.NumberFormat;

import org.apache.commons.lang3.builder.EqualsBuilder;
import org.apache.commons.lang3.builder.HashCodeBuilder;
import org.apache.commons.lang3.builder.ToStringBuilder;
import org.apache.commons.lang3.builder.ToStringStyle;
import org.nkjmlab.gis.datum.jprect.util.LatLonUtils;

/**
 * 緯度経度を表現するクラス．緯度経度は，作成時に指定された単位と測地系で保存される．呼び出し時に指定した単位および座標系で取り出すことができる．
 *
 *
 * @author nkjm
 *
 */
public class LatLon extends LatLonPair {

  protected final Basis basis;

  public enum Unit {
    DEGREE, MILLI_DEGREE, DMS, SECOND
  }

  public enum Detum {
    TOKYO, WGS84
  }

  public LatLon(double lat, double lon, Unit unit, Detum detum) {
    super(lat, lon);
    this.basis = Basis.of(unit, detum);

  }

  public LatLon(double lat, double lon, Basis basis) {
    super(lat, lon);
    this.basis = basis;
  }

  public LatLon(LatLonPair latLon, Unit unit, Detum detum) {
    super(latLon);
    this.basis = Basis.of(unit, detum);
  }

  public LatLon(LatLonPair latLon, Basis basis) {
    super(latLon);
    this.basis = basis;
  }

  public Unit getUnit() {
    return basis.getUnit();
  }

  public Detum getDetum() {
    return basis.getDetum();
  }

  @Override
  public int hashCode() {
    return HashCodeBuilder.reflectionHashCode(this);
  }

  @Override
  public boolean equals(Object obj) {
    return EqualsBuilder.reflectionEquals(this, obj);
  }

  @Override
  public String toString() {
    return ToStringBuilder.reflectionToString(this, ToStringStyle.SHORT_PREFIX_STYLE);
  }

  public String toSimpleString() {
    NumberFormat format = NumberFormat.getInstance();
    format.setGroupingUsed(false);
    format.setMaximumFractionDigits(2);
    return format.format(lat) + "," + format.format(lon) + "," + basis.getUnit() + ","
        + basis.getDetum();
  }

  /**
   * 緯度を返す．単位と測地系は引数の値に従う．
   *
   * @param basis
   *
   * @return
   */
  public double getLat(Basis basis) {
    return getLat(basis.getUnit(), basis.getDetum());
  }

  /**
   * 緯度を返す．単位と測地系は引数の値に従う．
   *
   * @param basis
   *
   * @return
   */
  public double getLon(Basis basis) {
    return getLon(basis.getUnit(), basis.getDetum());
  }

  /**
   * 緯度を返す．単位と測地系は引数の値に従う．
   *
   * @return
   */
  public double getLat(Unit toUnit, Detum toDetum) {
    return BasisConverter.changeBasisOfLat(lat, lon, this.basis.getUnit(), this.basis.getDetum(),
        toUnit, toDetum);
  }

  /**
   * 経度を返す．単位と測地系は引数の値に従う．
   *
   * @return
   */
  public double getLon(Unit toUnit, Detum toDetum) {
    return BasisConverter.changeBasisOfLon(lat, lon, this.basis.getUnit(), this.basis.getDetum(),
        toUnit, toDetum);
  }

  /**
   * 経度を返す．単位は引数の値に，測地系はインスタンス生成時の値に従う．
   *
   * @return
   */
  public double getLon(Unit toUnit) {
    return BasisConverter.changeBasisOfLon(lat, lon, this.basis.getUnit(), this.basis.getDetum(),
        toUnit, this.basis.getDetum());
  }

  /**
   * 緯度を返す．単位は引数の値に，測地系はインスタンス生成時の値に従う．
   *
   * @return
   */
  public double getLat(Unit toUnit) {
    return BasisConverter.changeBasisOfLat(lat, lon, this.basis.getUnit(), this.basis.getDetum(),
        toUnit, this.basis.getDetum());
  }

  /**
   * 緯度を返す．単位はインスタンス生成時の値に，測地系は引数の値に従う．
   *
   * @return
   */
  public double getLat(Detum toDetum) {
    return BasisConverter.changeBasisOfLat(lat, lon, this.basis.getUnit(), this.basis.getDetum(),
        this.basis.getUnit(), toDetum);
  }

  /**
   * 経度を返す．単位と測地系は引数の値に従う．
   *
   * @return
   */
  public double getLon(Detum toDetum) {
    return BasisConverter.changeBasisOfLon(lat, lon, this.basis.getUnit(), this.basis.getDetum(),
        this.basis.getUnit(), toDetum);
  }

  public Basis getBasis() {
    return basis;
  }

  public LatLon copyInto(Basis basis) {
    return new LatLon(getLat(basis), getLon(basis), basis);
  }

  public Tile toTile(int zoom) {
    return LatLonUtils.toTile(this, zoom);
  }

}