Bouncing Circular Random Walker

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Code by Vamoss

Original code link:

https://www.openprocessing.org/sketch/624877

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Author links:

http://vamoss.com.br

http://twitter.com/vamoss

http://github.com/vamoss

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var prevPos = {}

var pos = {}

var dir = 1

var radius = 1

var angle = 0

var pg

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function setup() {

  createCanvas(600, 600);

  background(255);

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

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

  strokeWeight(1)

}

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function draw() {

  angle += 1/radius*dir

  pos.x += cos(angle) * radius

  pos.y += sin(angle) * radius

  if(get(round(pos.x), round(pos.y))[0] < 255 || pos.x < 0 || pos.x > width || pos.y < 0 || pos.y > height){

    dir *= -1

    radius = random(1, 20)

    angle += PI * dir

  }

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

  prevPos.x = pos.x

  prevPos.y = pos.y

}

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