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This is a Java implementation of the geodesic algorithms from GeographicLib. This is a self-contained library to solve geodesic problems on an ellipsoid model of the earth. It requires Java version 1.7 or later.

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/**
 * Implementation of the net.sf.geographiclib.PolygonResult class
 *
 * Copyright (c) Charles Karney (2013)  and licensed
 * under the MIT/X11 License.  For more information, see
 * https://geographiclib.sourceforge.io/
 **********************************************************************/
package net.sf.geographiclib;

/**
 * A container for the results from PolygonArea.
 **********************************************************************/
public class PolygonResult {
  /**
   * The number of vertices in the polygon
   **********************************************************************/
  public int num;
  /**
   * The perimeter of the polygon or the length of the polyline (meters).
   **********************************************************************/
  public double perimeter;
  /**
   * The area of the polygon (meters²).
   **********************************************************************/
  public double area;
  /**
   * Constructor
   * 
   * @param num the number of vertices in the polygon.
   * @param perimeter the perimeter of the polygon or the length of the
   *   polyline (meters).
   * @param area the area of the polygon (meters²).
   **********************************************************************/
  public PolygonResult(int num, double perimeter, double area) {
    this.num = num;
    this.perimeter = perimeter;
    this.area = area;
  }
}