//Professor : Xin Xin

//Code 1.A.Fa19

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// This project acts as a direct visulizer of how much time you still have in a day.

// Achieved by 'for' loop, and 'noise' function.

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let x = 0;

let y = 0;

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let Mt = 0;

let Mh = 0;

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function setup() {

  createCanvas(600, 600);

}

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function draw() {

  background(0);

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  //Reference of time.

  let dy = day();

  let hr = hour();

  let mn = minute();

  let sc = second();

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  stroke(255);

  strokeWeight(0.5);

  // The formation of the topper outline of the eye. 

  // The intensity of the 'cross-sketching' depends on the day in a Month.

  for (let x = 0; x < width; x = x + dy + 1)

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  {

    let w = random(-10, 0);

    let h = random(600, 610);

    line(x, w, h, x);

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  }

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  for (let y = 0; y < height; y = y + dy + 1) {

    let w = random(-10, 0);

    let h = random(600, 610);

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    line(w, y, y, h);

  }

  //Center everything in the middle.

  translate(width / 2, height / 2)

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  // I use loop function to draw a circle, then I randomiz the radius of the circle. As the value of 'a +=' is 0,2, that means the circle is divided into 2Pi/0.2 segments. If the radius are randomized, there are spikes created.

  stroke(255);

  strokeWeight(1);

  noFill();

  beginShape();

  for (let a = 0; a < (sc + 1) * TWO_PI / 60; a += 0.2) {

    let r = random(270 - sc, 150);

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    //let r= 100;

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    x = r * -sin(a);

    y = r * -cos(a);

    vertex(x, y);

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  }

  endShape();

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// Here I introduced a noise function to replace the 'random' function that I used before. They behave similiarly, but the spikes looks more fluent in the simulation of the minute pointer of a clock.

  stroke(255);

  strokeWeight(2);

  noFill();

  beginShape();

  for (let a = 0; a < (mn - 1) * TWO_PI / 60; a += 0.1) {

    //let r= random(200-mn,100);

    let r = map(noise(a + Mt), 0, 1, 100, 200)

    //let r= 100;

    x = r * -sin(a);

    y = r * -cos(a);

    vertex(x, y);

    // This is the offset of the noise value.

    Mt += 0.1;

  }

  endShape();

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  stroke(255);

  strokeWeight(15);

  noFill();

  beginShape();

  for (let a = 0; a < (hr + 1) * TWO_PI / 24; a += 0.1) {

    let r = map(noise(a + Mh), 0, 1, 0, 220);

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    //let r= 100;

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    x = r * -sin(a);

    y = r * -cos(a);

    vertex(x, y);

    Mh += 0.8;

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  }

  endShape();

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}