Circle_dt.java

package delaunay_triangulation;
/**
 *  this class represents a simple circle. <br />
 *  it is used by the Delaunay Triangulation class. <br />
 *  <br />
 *  note that this class is immutable.
 *  
 *  @see Delaunay_Triangulation
 */
public class Circle_dt  {

  private Point_dt c;
  private double r;
  
  /**
   * Constructor. <br />
   * Constructs a new Circle_dt.
   * @param c Center of the circle.
   * @param r Radius of the circle.
   */
  public Circle_dt( Point_dt c, double r ) {
    this.c = c;
    this.r = r;
  }
  
  /**
   * Copy Constructor. <br />
   * Creates a new Circle with same properties of <code>circ</code>.
   * @param circ Circle to clone.
   */
  public Circle_dt( Circle_dt circ) {
    this.c = circ.c;
    this.r = circ.r;
  }
  
  public String toString() {
    return(new String(" Circle["+ c.toString() + "|" + r + "|" + (int) Math.round(Math.sqrt(r)) + "]"));
  }
  
  /**
   * Gets the center of the circle.
   * @return the center of the circle.
   */
  public Point_dt Center(){
	  return this.c;
  }
  
  /**
   * Gets the radius of the circle.
   * @return the radius of the circle.
   */
  public double Radius(){
	  return this.r;
  }
}