Circular Random Walker

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Code by Vamoss

Original code link:

https://openprocessing.org/sketch/2313346

​

Author links:

http://vamoss.com.br

http://twitter.com/vamoss

http://github.com/vamoss

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const speed = 2

var prevPos = {}

var pos = {}

var dir = 1

var radius = 1

var angle = 0

​

function setup() {

  createCanvas(600, 600);

  background(255);

  pos = {x: width/2, y: height/2}

  prevPos = {x: pos.x, y: pos.y}

}

​

function draw() {

  if(random() < 0.1) dir *= -1

  if(random() < 0.1) radius = random(1, 5)

  if(floor(frameCount/30)%2==0){

    angle += 1/radius*dir

  }

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

    pos.x += cos(angle) * radius

    pos.y += sin(angle) * radius

  }

  line(prevPos.x, prevPos.y, pos.x, pos.y)

  prevPos.x = pos.x

  prevPos.y = pos.y

  if(pos.x < 0 || pos.x > width || pos.y < 0 || pos.y > height){

    dir *= -1

    angle += PI * dir

    for(let i = 0; i < speed*2; i++){

      pos.x += cos(angle) * radius

      pos.y += sin(angle) * radius

    }

  }

}