Complex pattern

pattern.pde

// renaud.jean-francois(arobas)uqam(point)ca
// Syntaxe Processing version 4.3
// lundi, 18 septembre 2023

color w, k, y;

void setup() {
  size(840, 840);
  background(0);
  noStroke();
  w = color(#E1DCD2); // off white
  k = color(#41413C); // dark gray
  y = color(#C8963C); // dull yellow
  noLoop();
}

void draw() {
  background(w);
  translate(20, 20); // margin of 20 pixels, so inside pattern will be 800x800 px

  // first quadrant (upper left corner), which is a 4 x 4 tiles
  pushMatrix();
  translate(200, 200);
  rotate(PI);
  tile(); // one tile is 8 x 8 modules
  popMatrix();

  pushMatrix();
  translate(200, 200);
  rotate(-HALF_PI);
  tile();
  popMatrix();

  pushMatrix();
  translate(200, 200);
  rotate(HALF_PI);
  tile();
  popMatrix();

  k = y; // we change black to yellow
  pushMatrix();
  translate(200, 200);
  tile();
  popMatrix();
  // reset black variable to black color
  k = color(#41413C);


  // second quadrant (upper right corner)
  pushMatrix();
  translate(400, 0);

  pushMatrix();
  translate(200, 200);
  rotate(PI);
  tile();
  popMatrix();

  pushMatrix();
  translate(200, 200);
  rotate(-HALF_PI);
  tile();
  popMatrix();

  k = y;
  pushMatrix();
  translate(200, 200);
  rotate(HALF_PI);
  tile();
  popMatrix();
  k = color(#41413C);

  pushMatrix();
  translate(200, 200);
  tile();
  popMatrix();

  popMatrix();
  

  // third quadrant (down left corner)
  pushMatrix();
  translate(0, 400);

  pushMatrix();
  translate(200, 200);
  rotate(PI);
  tile();
  popMatrix();

  k = y;
  pushMatrix();
  translate(200, 200);
  rotate(-HALF_PI);
  tile();
  popMatrix();
  k = color(#41413C);

  pushMatrix();
  translate(200, 200);
  rotate(HALF_PI);
  tile();
  popMatrix();

  pushMatrix();
  translate(200, 200);
  tile();
  popMatrix();

  popMatrix();
  

  // fourth quadrant (down right corner)
  pushMatrix();
  translate(400, 400);

  k = y;
  pushMatrix();
  translate(200, 200);
  rotate(PI);
  tile();
  popMatrix();
  k = color(#41413C);

  pushMatrix();
  translate(200, 200);
  rotate(-HALF_PI);
  tile();
  popMatrix();

  pushMatrix();
  translate(200, 200);
  rotate(HALF_PI);
  tile();
  popMatrix();

  pushMatrix();
  translate(200, 200);
  tile();
  popMatrix();

  popMatrix();
  
  //save render
  save("pattern.jpg");
}


// tile function
void tile() {
  pushMatrix();
  scale(25);
  for (int j = 0; j < 8; j++) {
    for (int i = 0; i < 8; i++) {
      pushMatrix();
      translate(i, j);
      if (j%4 == 0) {
        if (i%4 == 0) {
          module(w, k); // white triangle above black
        } else if ((i%4 > 0) && (i%4 < 3)) {
          module(k, w); // black triangle above white
        } else {
          module(w, k);
        }
      } else if (j%4 == 1) {
        if (i%4 < 2) {
          module(k, w);
        } else {
          module(w, k);
        }
      } else if (j%4 == 2) {
        if (i%4 == 0) {
          module(k, w);
        } else if ((i%4 > 0) && (i%4 < 3)) {
          module(w, k);
        } else {
          module(k, w);
        }
      } else {
        if (i%4 < 2) {
          module(w, k);
        } else {
          module(k, w);
        }
      }
      popMatrix();
    }
  }
  popMatrix();
}


// module function, which is the smallest unit
// square made of two triangles
void module(color c1, color c2) {
  fill(c1);
  triangle(0, 0, 1, 0, 1, 1);
  fill(c2);
  triangle(0, 0, 1, 1, 0, 1);
}

Result look like this :