This is the solution to the Robot Face problem from Section Assignment 2 of the Stanford CS106A Introduction to Programming Methodology Class

RobotFaceSolution

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

public class DrawFace extends GraphicsProgram {
	
	private static final int head_width = 100;
	
	private static final int head_height = 200;
	
	private static final int eye_radius = 20; 
	
	private static final int mouth_width = 50;
	
	private static final int mouth_height = 20;
	
	public void run() {
		buildHead();
		buildLeftEye();
		buildRightEye();
		buildMouth();
	}
	private void buildHead() {
		double startingWidth = ((getWidth()/2) - (head_width/2));
		double startingHeight = ((getHeight()/2) - (head_height/2));
		GRect face = new GRect (startingWidth, startingHeight, head_width, head_height);
		add(face);
		face.setFilled(true);
		face.setFillColor(Color.GRAY);
	}
	private void buildLeftEye() {
		double startingWidth = getWidth()/2 - head_width/4 - eye_radius/2;
		double startingHeight = getHeight()/2 - head_height/4 - eye_radius/2;
		GOval leftEye = new GOval (startingWidth, startingHeight, eye_radius, eye_radius);
		add(leftEye);
		leftEye.setColor(Color.YELLOW);
		leftEye.setFilled(true);
		leftEye.setFillColor(Color.YELLOW);
	}
	private void buildRightEye() {
		double startingWidth = getWidth()/2 + head_width/4 - eye_radius/2;
		double startingHeight = getHeight()/2 - head_height/4 - eye_radius/2;
		GOval rightEye = new GOval (startingWidth, startingHeight, eye_radius, eye_radius);
		add(rightEye);
		rightEye.setColor(Color.YELLOW);
		rightEye.setFilled(true);
		rightEye.setFillColor(Color.YELLOW);
	}
	private void buildMouth() {
		double startingWidth = getWidth()/2 - mouth_width/2;
		double startingHeight = getHeight()/2 + head_height/4 - mouth_height/2;
		GRect mouth = new GRect (startingWidth, startingHeight, mouth_width, mouth_height);
		add(mouth);
		mouth.setColor(Color.WHITE);
		mouth.setFilled(true);
		mouth.setFillColor(Color.WHITE);
	}
}

Hi, very neat code, just one question, why are you dividing eye radius by 2

one more comment, the solution provided by stanford used cx and cy any idea what these are?

I think I did this problem wrong. At the time, I thought the radius was actually the diameter, so I was dividing it by 2 to get the radius. So my solution is not correct.

On Sat, Jul 28, 2012 at 12:32 AM, Raffay < ***@***.*** > wrote: Hi, very neat code, just one question, why are you dividing eye radius by 2 --- Reply to this email directly or view it on GitHub: https://gist.github.com/1335354

## natasha murashev | natashamurashev.com | 415-577-5206 | @natashamurashev

Hi, thank you for your reply. i not sure if you could help me out on this or not but i thought i should ask you. i am following the art and science of java book and in the third chapter there is a problem 10 which requires you to centre the tic tac toe board on the screen and use one named constant board_size. i am not getting this right and have searched the net but could not find a solution. any idea how to solve it, i could centre a house but not this… cheers Raffay

…

On 29-Jul-2012, at 5:05 AM, NatashaTheRobot ***@***.*** wrote: I think I did this problem wrong. At the time, I thought the radius was actually the diameter, so I was dividing it by 2 to get the radius. So my solution is not correct. On Sat, Jul 28, 2012 at 12:32 AM, Raffay < ***@***.*** > wrote: > > Hi, very neat code, just one question, why are you dividing eye radius by 2 > --- > > Reply to this email directly or view it on GitHub: > https://gist.github.com/1335354 ## natasha murashev | natashamurashev.com | 415-577-5206 | @natashamurashev --- Reply to this email directly or view it on GitHub: https://gist.github.com/1335354