Maple - Pack

let palette = ['#cb505f', '#e9a14d', '#ba311b', '#86321d'];

let vmin, vmax;

let cx, cy;

let ctx;

let NUM = 300;

let leafs = [];

​

function setup() {

  createCanvas(1112, 834);

  vmin = min(width, height);

  vmax = max(width, height);

  cx = width / 2;

  cy = height / 2;

  ctx = drawingContext;

  let count = 0;

  while (count < 10000) {

    count++

    let x = random(width);

    let y = random(height);

    let r = vmax * random(0.2, 0.01);

    let a = random(-Math.PI, Math.PI);

    let c = shuffle(palette).slice(0, 2)

    if (leafs.some((l) => (mag(l.x - x, l.y - y) < (l.r + r) * 0.7))) {

      continue

    }

    leafs.push({

      x,

      y,

      a,

      r,

      c

    })

  }

}

​

function leafPiece(pg, x, y, r) {

  pg.beginShape();

  let x0 = x;

  let y0 = y;

  let r1 = r * 0.6;

  let a1 = -PI * 0.65;

  let x1 = x0 + cos(a1) * r1;

  let y1 = y0 + sin(a1) * r1;

  let x3 = x0;

  let y3 = y0 - r;

  let r2 = r * 0.7;

  let a2 = PI * 0.5;

  let x2 = x3 + cos(a2) * r2;

  let y2 = y3 + sin(a2) * r2;

  let a4 = PI - a1;

  let x4 = x0 + cos(a4) * r1;

  let y4 = y0 + sin(a4) * r1;

  pg.vertex(x0, y0);

  pg.bezierVertex(x1, y1, x2, y2, x3, y3);

  pg.bezierVertex(x2, y2, x4, y4, x0, y0);

  pg.endShape();

}

​

function leaf(pg, x, y, r, colors) {

  let ctx = pg.drawingContext

  let gd = ctx.createLinearGradient(0, -r * 0.8, 0, r * 0.35 * 0.8);

  gd.addColorStop(0.0, colors[0]);

  gd.addColorStop(1.0, colors[1]);

  ctx.fillStyle = gd;

  pg.push();

  {

    pg.translate(x, y);

    leafPiece(pg, 0, 0, r);

    for (let i of [-1, 1]) {

      pg.push();

      {

        pg.rotate(i * PI * 0.25);

        leafPiece(pg, 0, 0, r * 0.8);

      }

      pg.pop();

      pg.push();

      {

        pg.rotate(i * PI * 0.48);

        leafPiece(pg, 0, 0, r * 0.8);

      }

      pg.pop();

      pg.push();

      {

        pg.rotate(i * PI * 0.68);

        leafPiece(pg, 0, 0, r * 0.5);

      }

      pg.pop();

    }

    pg.triangle(0, -r * 0.5, -r * 0.015, r * 0.35, r * 0.015, r * 0.35);

  }

  pg.pop();

}

​

function draw() {

  background('#f9e5ce');

  for (let { x, y, a, r, c } of leafs) {

    let f = `drop-shadow(0 0 16px rgba(180, 40, 0, 0.5))`

    ctx.filter = f

    let sz = r * 2;

    let pg = createGraphics(sz, sz);

    pg.noStroke();

    leaf(pg, r, r, r, c);

    imageMode(CENTER);

    push();

    {

      translate(x, y);

      rotate(a);

      image(pg, 0, 0);

    }

    pop();

  }

  noLoop();

}

​

// save jpg

let lapse = 0;    // mouse timer

function mousePressed(){

  if (millis() - lapse > 400){

    save("img_" + month() + '-' + day() + '_' + hour() + '-' + minute() + '-' + second() + ".jpg");

    lapse = millis();

  } 

}