// file: TestCircle.java
// date: 3/23/2014
// authors: Andrew Mertz and Nancy Van Cleave
//
// This program should be used to test your GCircle class before continuing.
// A GCircle, pocket, is created in the center of the window, then for MAX_MOVES
// steps another GCircle is randomly resized and moved around the window.  If the
// center of this circle lands inside the pocket, it will appear red, else it will
// appear green.

package testing;

import acm.graphics.*;
import acm.program.*;
import acm.util.*;
import java.awt.*;
import graphics.*;

public class TestCircle extends GraphicsProgram
{

  public void init()
  {
    setSize(600, 600);
  }

  public void run()
  {
    // Create the a pocket in the center of the window with radius equal to 25%
    // of the width of the window.
    double r = 0.25 * getWidth();
    GCircle pocket = 
        new GCircle(getWidth()/2.0 - r, getHeight()/2.0 - r, 2*r, Color.BLACK);
    add(pocket);
    
    // Add an "outline" of a circle and its center point to the window. For now 
    // we do not care where they go as we will be moving them in a moment.
    GCircle outline = new GCircle(0,0,0);
    add(outline);
    GCircle point = new GCircle(0,0,POINT_SIZE);
    point.setFilled(true);
    add(point);

    // Take MAX_MOVE steps, resizing and moving the circle.  If its center falls
    // inside the pocket it should be red, otherwise (center is outside the pocket),
    // it should be green
    for (int i = 1; i <= MAX_MOVES; i++)
    {
      // Choose the size (diameter) of the outline randomly
      double size = rgen.nextDouble(SMALL_SIZE, LARGE_SIZE);

      // Choose the center of the circle
      double x = rgen.nextDouble(0, getWidth());
      double y = rgen.nextDouble(0, getHeight());

      // Move and resize the circles
      outline.setBounds(x - size/2.0, y - size/2.0, size);
      point.setLocation(x - POINT_SIZE/2.0, y - POINT_SIZE/2.0);
      
      // If we are inside the pocket, color the circle red. 
      if(pocket.captured(outline))
      {
        outline.setColor(Color.RED);
      }
      else // Otherwise color it green.
      {
        outline.setColor(Color.GREEN);
      }
      
      // Allow time to observe the results, then erase the window 
      pause(SLEEPTIME);
    }
  }

    // CONSTANT AND GLOBAL OBJECTS DECLARATION SECTION
    // Circle attributes
  private static final double POINT_SIZE = 5;
  private static final double SMALL_SIZE = 20;
  private static final double LARGE_SIZE = 350;
    // number of times to move/relocate the circle, and pause time for animation
  private static final int MAX_MOVES = 20;
  private static final double SLEEPTIME = 1000;
    // allows for random location and size of circle
  private RandomGenerator rgen = RandomGenerator.getInstance();

    
  public static void main(String args[])
  {
    (new TestCircle()).start();
  }
}