createCanvas(400, 400);

}  

​

function draw() {

  frameRate (3)

  background(random(20, 235));

  let t = map(mouseX, 5, width, -20, 50);

  curveTightness(t);

  beginShape();

  curveVertex(100, 400);

  curveVertex(30, 300);

  curveVertex(200, 350);

  curveVertex(100, 345);

  curveVertex(100, 350);

  curveVertex(100, 400);

  endShape();

  noFill();

curve(20, 26, 73, 24, 73, 150, 150, 120);

let steps = 6;

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

  let t = i / steps;

  let x = curvePoint(5, 73, 73, 15, t);

  let y = curvePoint(26, 24, 61, 65, t);

  //ellipse(x, y, 5, 5);

  let tx = curveTangent(400, 400, 400, 400, t);

  let ty = curveTangent(26, 24, 61, 65, t);

  let a = atan2(ty, tx);

  a -= PI / 2.0;

  line(x, y, cos(a) * 8 + x, sin(a) * 8 + y);

  noFill();

stroke(255, 102, 0);

curve(5, 26, 0, 5, 26, 15, 73, 24, 15, 73, 61, 0);

stroke(0);

curve(5, 26, 0, 73, 24, 0, 73, 61, 0, 15, 65, 0);

stroke(255, 102, 0);

curve(73, 24, 0, 73, 61, 0, 15, 65, 0, 15, 65, 0);

}

}