​

let rText;

​

function setup() {

  createCanvas(windowWidth, windowHeight)

  angleMode(DEGREES)

  // frameRate(1000000)

  radiusIncrement = random(0.01, 0.09)

  angleIncrement = random(45, 90)

  red = random(0, 255)

  green = random(0, 255)

  blue = random(0, 255)

  redInc = random(0, 30)

  blueInc = random(0, 30)

  greenInc = random(0, 30)

​

//   rText = createP()

//   rText.position(-164, 16)

//   rText.style('font-size', '24px')

//   rText.style('color', 'white')

  // katex.render('\\nabla^{2}\\Phi=\\sigma(x)', rText.elt)

​

​

}

let radius = 0

let angle = 0

let radiusIncrement;

let angleIncrement;

​

let red

let green

let blue

​

let redInc

let blueInc

let greenInc

​

​

​

function draw() {

  for (let i = 0; i < 40; i++) {

    // stroke(0,0,0)

//     push()

//     fill("black")

//     rect(0, 0, 200, 100)

//     fill("white")

//     textSize(18)

​

//     pop()

​

    push()

    translate(width / 2, height / 2)

    rotate(angle)

    angle += angleIncrement

    radius += radiusIncrement

    strokeWeight(6)

    stroke(red, green, blue)

​

    point(radius, 0)

​

    red += redInc

    green += greenInc

    blue += blueInc

​

    if (red > 255) {

      red = 0

    }

​

    if (green > 255) {

      green = 0

    }

​

    if (blue > 255) {

      blue = 0

    }

    pop()

​

​

  }

  if (radius >= width) {

    radius = 0

    background("black")

    radiusIncrement = random(0.01, 0.5)

    angleIncrement = random(45, 90)

    red = random(0, 255)

    green = random(0, 255)

    blue = random(0, 255)

    redInc = random(0, 30)

    blueInc = random(0, 30)

    greenInc = random(0, 30)

  }

​

}