/* Draws two pawprints
 * author:zhendongYi
 * time:2016/06/29
 * email:myyizhendong@gmail.com
 */
import acm.program.*;
import acm.graphics.*;
import java.awt.*;

public class Pawprints extends GraphicsProgram {
    /* Constants controlling the relative positions of the
     * three toes to the upper-left corner of the pawprint.
     * 
     * (Yes, I know that actual pawprints have four toes.
     * Just pretend it's a cartoon animal. ^_^)
     */
    private static final double FIRST_TOE_OFFSET_X = 0;
    private static final double FIRST_TOE_OFFSET_Y = 20;
    private static final double SECOND_TOE_OFFSET_X = 30;
    private static final double SECOND_TOE_OFFSET_Y = 0;
    private static final double THIRD_TOE_OFFSET_X = 60;
    private static final double THIRD_TOE_OFFSET_Y = 20;
    
    /* The position of the heel relative to the upper-left
     * corner of the pawprint.
     */
    private static final double HEEL_OFFSET_X = 20;
    private static final double HEEL_OFFSET_Y = 40;
    
    /* Each toe is an oval with this width and height. */
    private static final double TOE_WIDTH = 20;
    private static final double TOE_HEIGHT = 30;
    
    /* The heel is an oval with this width and height. */
    private static final double HEEL_WIDTH = 40;
    private static final double HEEL_HEIGHT = 60;
    
    /* The default width and height of the window. These constants will tell Java to
     * create a window whose size is *approximately* given by these dimensions. You should
     * not directly use these constants in your program; instead, use getWidth() and
     * getHeight(), which return the *exact* width and height of the window.
     */
    public static final int APPLICATION_WIDTH = 270;
    public static final int APPLICATION_HEIGHT = 220;
    
    public void run() {
        drawPawprint(20, 20);
        drawPawprint(180, 70);
    }
    
    /**
     * Draws a pawprint. The parameters should specify the upper-left corner of the
     * bounding box containing that pawprint.
     * 
     * @param x The x coordinate of the upper-left corner of the bounding box for the pawprint.
     * @param y The y coordinate of the upper-left corner of the bounding box for the pawprint.
     */
    private void drawPawprint(double x, double y) {
        drawToe(x+FIRST_TOE_OFFSET_X,y+FIRST_TOE_OFFSET_Y,TOE_WIDTH,TOE_HEIGHT);
        drawToe(x+SECOND_TOE_OFFSET_X,y+SECOND_TOE_OFFSET_Y,TOE_WIDTH,TOE_HEIGHT);
        drawToe(x+THIRD_TOE_OFFSET_X,y+THIRD_TOE_OFFSET_Y,TOE_WIDTH,TOE_HEIGHT);
        drawHeel(x+HEEL_OFFSET_X,y+HEEL_OFFSET_Y,HEEL_WIDTH,HEEL_HEIGHT);
    }
    
    /**
     * Draws a Toe.
     * @param x     The x coordinate of the upper-left corner of the bounding box for the toe.
     * @param y     The y coordinate of the upper-left corner of the bounding box for the toe.
     * @param toeWidth      The width of the bounding box for the toe.
     * @param toeHeight     The height of the bounding box for the toe.
     */
    private void drawToe(double x, double y, double toeWidth, double toeHeight) {
        drawOval(x,y,toeWidth,toeHeight);
        
    }
    
    /**
     * Draws a Heel.
     * @param x     The x coordinate of the upper-left corner of the bounding box for the heel.
     * @param y     The y coordinate of the upper-left corner of the bounding box for the heel.
     * @param heelWidth     The width of the bounding box for the heel.
     * @param heelHeight        The height of the bounding box for the heel.
     */
    private void drawHeel(double x, double y, double heelWidth, double heelHeight) {
        drawOval(x,y,heelWidth,heelHeight);
        
    }

    
    /**
     * Draws a Oval.
     * @param x     The x coordinate of the upper-left corner of the bounding box for the oval.
     * @param y     The y coordinate of the upper-left corner of the bounding box for the oval.
     * @param width     The width of the bounding box for the Oval.
     * @param height    The height of the bounding box for the Oval.
     */
    private void drawOval(double x, double y, double width, double height) {
        GOval circle = new GOval(x,y,width,height);
        circle.setFilled(true);
        circle.setFillColor(Color.black);
        add(circle);
        
    }
}