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

Name: Double Pendulum Fractal

Video Tutorial: https://youtu.be/_twl36uR2eQ

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Connect with Patt: @pattvira

https://www.pattvira.com/

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let maxVelocity = 5;

let g = 1; let dt = 0.1;

let pendulums = []; let cols, rows; let size = 4;

​

function setup() {

  createCanvas(400, 400);

  cols = width/size;

  rows = height/size;

  for (let i=0; i<cols; i++) {

    pendulums[i] = [];

    for (let j=0; j<rows; j++) {

      let cx = size/2 + i*size;

      let cy = size/2 + j*size; 

      let angle1 = map(i, 0, cols, -PI, PI);

      let angle2 = map(j, 0, rows, -PI, PI);

      // let angle1 = map(i, 0, cols, 0, TWO_PI);

      // let angle2 = map(j, 0, rows, 0, TWO_PI);

      pendulums[i][j] = new Pendulum(cx, cy, angle1, angle2, size, size);

    }

  }

}

​

function draw() {

  background(220);

  for (let i=0; i<cols; i++) {

    for (let j=0; j<rows; j++) {

      pendulums[i][j].update();

      pendulums[i][j].displayColor();

      // pendulums[i][j].displayArrow();

    }

  }

}