N amount of boxes within boxes being drawn

Question

Here's what I am trying to replicate:

Currently, my code is as follows:

public void boxes() {
    setLocation(20,20);
    for(int j =0; j < 5; j = j+1) {
    setLocation(20+50*j,20+50*j);
        for (int i= 0; i<4; i= i+1) {
            move(600-(50*j)); 
            turn(90);
    }
  }
}

and the result is:

PLEASE do not write me any code, I'd highly prefer just a general explanation as to how I can make it so that the boxes being drawn do not end at the same point. I've been trying to figure it out for the past two hours with no luck and what I currently have is so far the best I've gotten. Thank you!

This is based on http://www.greenfoot.org/scenarios/3535

the squares in the first image share the same coordinates as the center of square. and you also need to parameterize width and height for the squares, I think. — Juvanis, Sep 08 '15 at 12:02
@FastSnail I'm new to Java and this is just a project off greenfoot that has a turtle which draws straight lines. I'm trying to make it draw boxes within boxes — Hello Goodbye, Sep 08 '15 at 12:05
Can you tag (or at least add to the question) the library which provides the turtle graphics? Because it's not obvious what operations are available. — dhke, Sep 08 '15 at 12:06

score 2 · Answer 1 · answered Sep 08 '15 at 12:13

2

the problem is with the value you pass to the move() function, it should be:

move(600-(50*j*2));

the reason is that the length of each edge of the square should be shorter by twice the offset from the previous square, as it starts offset units deeper and ends offset units sooner (offset=50 in this case).

answered Sep 08 '15 at 12:13

yurib

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Oh wow, thank you so much for explaining! Didn't think it was that simple of a fix.. – Hello Goodbye Sep 08 '15 at 13:08

score 0 · Answer 2 · answered Sep 08 '15 at 12:25

0

The j selects a next square. Ask yourself:

nice to know: end point of drawing is identical with begin point
you start by (50, 50) more inside. How do you come there from the prior end point
the new length to draw is how much smaller

answered Sep 08 '15 at 12:25

Joop Eggen

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N amount of boxes within boxes being drawn

2 Answers2