// The Nature of Code

// The Coding Train / Daniel Shiffman

// https://youtu.be/JLAc9hMtcxk

// https://thecodingtrain.com/learning/nature-of-code/3.6-graphing-sine.html

​

// Sine Wave Graph Exercise: https://editor.p5js.org/codingtrain/sketches/EIbEYLTaZ

// Playing With Period: https://editor.p5js.org/codingtrain/sketches/SbRC-G0lU

// Graphing Wave: https://editor.p5js.org/codingtrain/sketches/c_S9jiXz-

// Circular Wave Exercise: https://editor.p5js.org/codingtrain/sketches/mOm2Is7ba

​

let angle = 0;

let r;

let phase = 0;

​

function setup() {

  createCanvas(windowWidth, windowHeight);

  r = width / 3;

}

​

function draw() {

  background(0);

  translate(width / 2, height / 2);

  stroke(255);

  strokeWeight(8);

  fill(50);

  // circle(0, 0, r * 2);

​

  // let increment = map(mouseX, 0, width, PI, 0.01);

  let increment = TWO_PI / 32;

  beginShape();

  for (let a = 0; a < TWO_PI; a += increment) {

    let r1 = r + sin(a * 10 + phase) * 50;

    let x = r1 * cos(a);

    let y = r1 * sin(a);

    curveVertex(x, y);

  }

  endShape(CLOSE);

  phase += 0.05;

}

​