import java.awt.*;
import java.applet.Applet;
import java.util.*;

public class MyQuiltWorld extends PictureWorld {


    public void initializePictureChoices() {
	// Define your pictures here and in auxiliary methods.
	// Add your pictures to the menu via "addPictureChoice(String name, Picture pic);"
	
	addPictureChoice("quilt", quilt());
	addPictureChoice("quiltQuadrant", quiltQuadrant());
	addPictureChoice("star(yellow,red,blue)", star(Color.yellow, Color.red, Color.blue));
	addPictureChoice("star(red,green,blue)", star(Color.red,Color.green,Color.blue));
	addPictureChoice("starQuadrant(yellow,red,blue)", starQuadrant(Color.yellow, Color.red, Color.blue));
	addPictureChoice("starQuadrant(red,green,blue)", starQuadrant(Color.red,Color.green,Color.blue));
	addPictureChoice("patch(red)", patch(Color.red));
	addPictureChoice("triangles(green,blue)", triangles(Color.green,Color.blue));
    }
    
    public Picture quilt () {
	return rotations(quiltQuadrant());
    } 	

    public Picture quiltQuadrant () {
	return corner(star(Color.yellow, Color.red, Color.blue),
		      star(Color.red,Color.green,Color.blue));
    }

    public Picture star(Color inner, Color middle, Color outer) {
	return rotations(starQuadrant(inner,middle,outer));
    }

    public Picture starQuadrant(Color squares, Color tri1, Color tri2) {
	return corner(patch(squares),triangles(tri1,tri2));
    }

    // Auxiliary methods 
    public Picture fourPics (Picture p1, Picture p2, Picture p3, Picture p4) {
	return above(beside(p1,p2),beside(p3,p4));
    }
 	
    public Picture fourSame (Picture p) {
	return fourPics(p,p,p,p);
    }
 	
    public Picture rotations (Picture p) {
	return fourPics(clockwise270(p),p,clockwise180(p),clockwise90(p));
    }
 	
    public Picture corner (Picture p1, Picture p2) {
	return fourPics(p2,p2,p1,p2);
    }

    // Methods for generating the primitive pictures for this problem. 
    // You do not have to understand these in order to do the problem set. 
 	
    public Picture patch(Color c) {
	return overlay (new Rect(0.0, 0.0, 1.0, 1.0, Color.black, false),
			new Rect(0.0, 0.0, 1.0, 1.0, c, true));
    }
 	
    public Picture triangles(Color c1, Color c2) {
	return overlay (new Rect(0.0, 0.0, 1.0, 1.0, Color.black, false),
			overlay (new Line(0.0, 1.0, 1.0, 0.0, Color.black),
				 overlay(tri(c1, true),
					 clockwise180(tri(c2, true)))));
    }
 	
    public Picture tri(Color c, boolean isFilled) {
	Poly triPoly = new Poly (c, isFilled);
	triPoly.addPoint(0.0, 0.0);
	triPoly.addPoint(0.0, 1.0);
	triPoly.addPoint(1.0, 0.0);
	return triPoly;
    }
 	
}