// Circular Painting 3b
// Changed so that after randomizing
// it will still synchronize.
// October 23, 2017 - John Clavin

var incAmount1;
var incAmount2;
var incAmount3;
var incAmount4;
var incAmount5;
var incAmount6;
var increment1 = 0;
var increment2 = 0;
var increment3 = 0;
var increment4 = 0;
var increment5 = 0;
var increment6 = 0;
var angle1 = 18;
var angle2 = 18;
var angle3 = 18;
var angle4 = 18;
var angle5 = 18;
var angle6 = 18;
var colorArray = [];
var angleArray = [];
var incArray = [];
var lastRand;

function setup() {
  createCanvas(800, 800);
  frameRate(60);
  background(232);
  strokeWeight(1);
  createColors(40);
  createIncAmounts();
  angleArray = [9, 12, 18, 24];
  incAmount1 = -radians(0.10);
  incAmount2 = +radians(0.15);
  incAmount3 = +radians(0.20);
  incAmount4 = +radians(0.40);
  incAmount5 = +radians(0.60);
  incAmount6 = -radians(0.80);
}

function draw() {
  wheel(740, angle1, increment1);
  increment1 += incAmount1;
  wheel(640, angle2, increment2);
  increment2 += incAmount2;
  wheel(540, angle3, increment3);
  increment3 += incAmount3;
  wheel(440, angle4, increment4);
  increment4 += incAmount4;
  wheel(340, angle5, increment5);
  increment5 += incAmount5;
  wheel(240, angle6, increment6);
  increment6 += incAmount6;
  fill(120);
  ellipse(width / 2, height / 2, 90, 90);
  fill(0);
  ellipse(width / 2, height / 2, 30, 30);
}

function mousePressed() {
  if (isMouseOver() === true) {
    randomize();
  }
  return false;
}

function wheel(dia, pAngle, pInc) {
  var lastAngle = pInc;
  for (var i = 0; i < 360 / pAngle; i++) {
    var pColor = colorArray[i];
    fill(pColor);
    arc(width / 2, height / 2, dia, dia, lastAngle, lastAngle + radians(pAngle));
    lastAngle += radians(pAngle);
  }
}

function createColors(number) {
  var cRed = color(210, 0, 0);
  var cBlack = color(10);
  var cGrey = color(120);
  var colorSet = [];
  colorSet[0] = cRed;
  colorSet[1] = cBlack;
  colorSet[2] = cGrey;
  colorSet[3] = cBlack;
  colorSet[4] = cGrey;

  for (var i = 0; i < number; i = i + 5) {
    for (var j = 0; j < 5; j++) {
      colorArray[i + j] = colorSet[j];
    }
  }
}

function createIncAmounts() {
  incArray[0] = -radians(0.10);
  incArray[1] = -radians(0.15);
  incArray[2] = -radians(0.20);
  incArray[3] = -radians(0.40);
  incArray[4] = -radians(0.60);
  incArray[5] = -radians(0.80);
  incArray[6] = radians(0.10);
  incArray[7] = radians(0.15);
  incArray[8] = radians(0.20);
  incArray[9] = radians(0.40);
  incArray[10] = radians(0.60);
  incArray[11] = radians(0.80);
}

function randomize() {
  increment1 = 0;
  increment2 = 0;
  increment3 = 0;
  increment4 = 0;
  increment5 = 0;
  increment6 = 0;
  var allAngle = floor(random(4));
  angle1 = angleArray[allAngle];
  angle2 = angleArray[allAngle];
  angle3 = angleArray[allAngle];
  angle4 = angleArray[allAngle];
  angle5 = angleArray[allAngle];
  angle6 = angleArray[allAngle];
  incAmount1 = incArray[rndNoRepeat(12)];
  incAmount2 = incArray[rndNoRepeat(12)];
  incAmount3 = incArray[rndNoRepeat(12)];
  incAmount4 = incArray[rndNoRepeat(12)];
  incAmount5 = incArray[rndNoRepeat(12)];
  incAmount6 = incArray[rndNoRepeat(12)];
}

function rndNoRepeat(randomField) {
  var test = floor(random(randomField));
  while (test == lastRand) {
    test = floor(random(randomField));
  }
  lastRand = test;
  return test;
}

function isMouseOver() {
  if ((mouseX < 0) || (mouseX > width) || (mouseY < 0) || (mouseY > height)) {
    return false;
  } else {
    return true;
  }
}