## Structured Square Series - Inwards

### Kyle McDonald

Based on: Structure Square Series Inwards by Roger Coqart, 1976

Category: direct

Description:

"Structured Square Series -- Inwards", drawing 28 x 28 cm.

// Other works in the series are "Horizontal Rows", "Outwards", as well as the "Permutation" works.

```/*
Part of the ReCode Project (http://recodeproject.com)
Based on "Structured Square Series - Inward" by Roger Coqart
Originally published in "Computer Graphics and Art" vol1 no3, 1976
*/

int side = 24;
int lines = 8;
int n = lines * 2 + 1;
int margin = side / 2;
int offset = side + margin;
int canvas = (n + 1) * offset;
boolean[] enabled = new boolean[lines];

void setup() {
size(canvas, canvas);
noLoop();
}

void draw() {
background(255);
translate(side, side);
for (int y = 0; y < n; y++) {
for (int x = 0; x < n; x++) {
// enable some lines
int total = max(abs(y - lines), abs(x - lines));
for (int i = 0; i < lines; i++) {
enabled[i] = i < total;
}

// shuffle the enabled lines
for (int i = 0; i < lines; i++) {
boolean swap = enabled[i];
int j = (int) random(lines);
enabled[i] = enabled[j];
enabled[j] = swap;
}

// draw all enabled lines
pushMatrix();
translate(x * offset, y * offset);
rect(0, 0, side, side);
if (enabled[0]) line(0, side / 2, side, side / 2);
if (enabled[1]) line(side / 2, 0, side / 2, side);
if (enabled[2]) line(0, 0, side, side);
if (enabled[3]) line(0, side, side, 0);
if (enabled[4]) line(0, side / 2, side / 2, 0);
if (enabled[5]) line(side / 2, 0, side, side / 2);
if (enabled[6]) line(side, side / 2, side / 2, side);
if (enabled[7]) line(side / 2, side, 0, side / 2);
popMatrix();
}
}
}
```