----- Coding Tutorial by Patt Vira ----- 

Name: Sierpinski Triangle

Video Tutorial: https://youtu.be/k0f0PkmY0A4

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Connect with Patt: @pattvira

https://www.pattvira.com/

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let level = 2;

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function setup() {

  createCanvas(400, 400);

}

​

function draw() {

  background(220);

  let p1 = createVector(width/2, 0);

  let p2 = createVector(0, height);

  let p3 = createVector(width, height);

  sierpinski(p1, p2, p3, level);

}

​

function sierpinski(p1, p2, p3, level) {

  if (level == 0) {

    fill(255);

    triangle(p1.x, p1.y, p2.x, p2.y, p3.x, p3.y);

  } else {

    let p12 = p5.Vector.lerp(p1, p2, 0.5);

    let p13 = p5.Vector.lerp(p1, p3, 0.5);

    let p23 = p5.Vector.lerp(p2, p3, 0.5);

    sierpinski(p1, p12, p13, level-1);

    sierpinski(p12, p23, p2, level-1);

    sierpinski(p13, p3, p23, level-1);

  }

}