/* Copyright 2001 Michael R. Wick */
package Shapes;

import java.awt.*;

public abstract class Polygon extends Shape {
  protected int nbrOfSides;
  Point[] theVertices;

  public String toString()
  {
    String result = new String();
    for(int i =0; i < nbrOfSides; i++){
      result = result + " " + theVertices[i].toString();
    }
    return (result);
  }

  public Polygon(Point center, int sides, Color aColor) {
    super(center,aColor);
    nbrOfSides = sides;
    theVertices = new Point[nbrOfSides];
  }

  public Polygon( Polygon orig ){
    super(orig);
    nbrOfSides = orig.nbrOfSides;
    theVertices = new Point[orig.nbrOfSides];
    for(int i = 0; i < nbrOfSides; i++){
      theVertices[i] = new Point( orig.theVertices[i] );
    }
  }

  public void drawBorder(Graphics g){
    int[] xPoints = new int[nbrOfSides];
    int[] yPoints = new int[nbrOfSides];
    for(int i = 0; i < nbrOfSides; i++){
      xPoints[i] = theVertices[i].x;
      yPoints[i] = theVertices[i].y;
    }
    g.fillPolygon(xPoints, yPoints, nbrOfSides);
  }

  protected void translateBorder( int dx , int dy ){
    for(int i = 0; i < nbrOfSides; i++){
      theVertices[i] = translate(theVertices[i],dx,dy);
    }
  }

  protected void flipBorderHorizontalAbout(Point p){
    for(int i = 0; i < nbrOfSides; i++){
      Point v = new Point(theVertices[i]);
      v.x = 2 * p.x - v.x;
      theVertices[i] = v;
    }
  }

  protected void flipBorderVerticalAbout(Point p){
    for(int i = 0; i < nbrOfSides; i++){
      Point v = new Point(theVertices[i]);
      v.y = 2 * p.y - v.y;
      theVertices[i] = v;
    }
  }

  protected void rotateBorderAbout( Point p, int degrees ){
    double radians = degreesToRadians(degrees);

    for(int i = 0; i < nbrOfSides; i++){
      Point v = new Point( theVertices[i] );
      v = rotateAbout(p, v, radians);
      theVertices[i] = v;
    }
  }
}