20250412

/***********************************

 * dailycoding - 20250412 / graphic

 * by E.C.H (Eiichi Ishii)

 ***********************************/

​

let num = 200;

let w;

​

function setup() {

  w = min(windowWidth, windowHeight);

  createCanvas(w, w);

  angleMode(DEGREES);

  strokeCap(PROJECT);

  noLoop();

}

​

function draw() {

  background(255);

​

  for (let i = 0; i < num; i++) {

    push();

    translate(random(-w / 4, w + w / 4), random(-w / 4, w + w / 4));

    rotate(random(360));

​

    let r = random(w / 3, w / 1.5);

    let sg = r / 40;

​

    noFill();

​

    for (let sh = 0; sh <= r / 4; sh += sg) {

      let lr = map(sh, 0, r / 4, 0, sg / 1.5);

      stroke(random([0, 255]));

      strokeWeight(lr);

      beginShape();

      for (let cx = -r / 2; cx <= r / 2; cx++) {

        let a = map(cx, -r / 2, r / 2, 0, 360 * 4);

        let cy = (r / 6) * sin(a);

        vertex(cx + sh, cy);

      }

      endShape();

    }

​

    for (let j = 0; j < 4; j++) {

      stroke(random([0, 255]));

      strokeWeight(random(sg / 4, sg));

      bezier(

        random(-w / 2, w / 2),

        random(-w / 2, w / 2),

        random(-w / 2, w / 2),

        random(-w / 2, w / 2),

        random(-w / 2, w / 2),

        random(-w / 2, w / 2),

        random(-w / 2, w / 2),

        random(-w / 2, w / 2)

      );

    }

    pop();

  }

​

  let rw = w/10;

  rakkan(rw/2.5, w-rw/1.25, rw, 0);

}

​

function rakkan(posx, posy, r, csw) {

  push();

  randomSeed(5146);

  translate(posx, posy);

  rectMode(CENTER);

  let nr = r / 2.5;

  let lr = r / 20;

​

  if (csw == 0) {

    fill("#e2041b");

    noStroke();

  } else if (csw == 1) {

    noFill();

    stroke("#e2041b");

    strokeWeight(lr / 4);

  }

​

  rect(0, 0, r / 1.4, r * 1.5, r / 5);

​

  if (csw == 0) {

    stroke(255);

  } else if (csw == 1) {

    fill(255);

    stroke("#e2041b");

  }

  strokeWeight(lr / 1.5);

  noFill();

​

  for (let i = 0; i < 10; i++) {

    let z = random(lr / 20, lr / 2);

    push();

    push();

    translate(0, -nr);

    beginShape();

    vertex(nr / 2 + random(-z, z), -nr / 2 + random(-z, z));

    vertex(random(-z, z), -nr / 2 + random(-z, z));

    vertex(-nr / 2 + random(-z, z), random(-z, z));

    vertex(random(-z, z), nr / 2 + random(-z, z));

    vertex(nr / 2 + random(-z, z), nr / 2 + random(-z, z));

    endShape();

​

    beginShape();

    vertex(-nr / 2 + random(-z, z), random(-z, z));

    vertex(nr / 2 + random(-z, z), random(-z, z));

    endShape();

    pop();

​

    push();

    translate(0, 0);

    beginShape();

    vertex(nr / 2 + random(-z, z), -nr / 2 + random(-z, z));

    vertex(random(-z, z), -nr / 2 + random(-z, z));

    vertex(-nr / 2 + random(-z, z), random(-z, z));

    vertex(random(-z, z), nr / 2 + random(-z, z));

    vertex(nr / 2 + random(-z, z), nr / 2 + random(-z, z));

    endShape();

​

    strokeWeight(lr / 3);

    beginShape();

    vertex(nr / 2 + random(-z, z), -nr / 2 + random(-z, z));

    vertex(-nr / 2 + random(-z, z), nr / 2 + random(-z, z));

    endShape();

    pop();

​

    push();

    translate(0, nr);

    beginShape();

    vertex(-nr / 2 + random(-z, z), -nr / 2 + random(-z, z));

    vertex(-nr / 2 + random(-z, z), nr / 2 + random(-z, z));

    endShape();

​

    beginShape();

    vertex(nr / 2 + random(-z, z), -nr / 2 + random(-z, z));

    vertex(nr / 2 + random(-z, z), nr / 2 + random(-z, z));

    endShape();

​

    beginShape();

    vertex(-nr / 2 + random(-z, z), random(-z, z));

    vertex(nr / 2 + random(-z, z), random(-z, z));

    endShape();

​

    strokeWeight(lr / 3);

​

    beginShape();

    vertex(nr / 2 + random(-z, z), -nr / 2 + random(-z, z));

    vertex(-nr / 2 + random(-z, z), nr / 2 + random(-z, z));

    endShape();

    pop();

    pop();

  }

  pop();

}

​

function keyPressed() {

  redraw();

}