/* File: Circle.java - February 2019 */
package l01;

/**
 * A basic Circle class inspired by Geogebra. Java tends to use American 
 * spelling for method names in libraries etc. hence "center" rather than
 * "centre". Sorry.
 *
 * @author Michael Albert
 *
 */

public class Circle{

  private Point center;
  private Point handle;
  
  public Circle(Point center, Point handle) {
    this.center = center;
    this.handle = handle;
  }
  
  // An alternative construction given just center and radius.
  // Intentionally a bit "tricky" -- try and figure it out
  public Circle(Point center, double radius) {
    this(center, center.clone());
    this.moveHandle(radius, 0.0);
  }
  
  public Point getCenter() {
    return center;
  }
  
  public Point getHandle() {
    return handle;
  }
  
  public double getRadius() {
    return center.distance(handle);
  }
  
  public void moveCenter(double dx, double dy) {
    center.move(dx, dy);
  }
  
  public void moveHandle(double dx, double dy) {
    handle.move(dx, dy);
  }
  
  // Move the whole circle
  public void move(double dx, double dy) {
    center.move(dx, dy);
    handle.move(dx, dy);
  }



  public String toString() {
    return "C[" + this.center + "," + this.getRadius() + "]";
  }

}