jflowmap-master/src/jflowmap/geom/Point.java
/*
 * This file is part of JFlowMap.
 *
 * Copyright 2009 Ilya Boyandin
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package jflowmap.geom;

import java.awt.geom.Point2D;

/**
 * Immutable Point implementation.
 *
 * @author Ilya Boyandin
 */
public final class Point {

  private final double x;
  private final double y;

  public Point(double x, double y) {
    this.x = x;
    this.y = y;
  }

  public double x() {
    return x;
  }

  public double y() {
    return y;
  }

  public double distanceTo(Point point) {
    double dx = point.x() - x;
    double dy = point.y() - y;
    return Math.sqrt(dx * dx + dy * dy);
  }

  public Point2D asPoint2D() {
    return new Point2D.Double(x, y);
  }

  public static Point valueOf(Point2D point) {
    return new Point(point.getX(), point.getY());
  }

  @Override
  public String toString() {
    return "Point [x=" + x + ", y=" + y + "]";
  }

  @Override
  public int hashCode() {
    final int prime = 31;
    int result = 1;
    long temp;
    temp = Double.doubleToLongBits(x);
    result = prime * result + (int) (temp ^ (temp >>> 32));
    temp = Double.doubleToLongBits(y);
    result = prime * result + (int) (temp ^ (temp >>> 32));
    return result;
  }

  @Override
  public boolean equals(Object obj) {
    if (this == obj)
      return true;
    if (obj == null)
      return false;
    if (getClass() != obj.getClass())
      return false;
    Point other = (Point) obj;
    if (Double.doubleToLongBits(x) != Double.doubleToLongBits(other.x))
      return false;
    if (Double.doubleToLongBits(y) != Double.doubleToLongBits(other.y))
      return false;
    return true;
  }

}
