poster code

//code credit: Manoylov AC http://manoylov.tumblr.com/ link to original code: https://www.openprocessing.org/sketch/158305

//the dense spiral of pixels isn't supposed to be there, it shows up normally in processing

float px, py, r, degree;

float minWeight = .8;

float maxWeight = 6;

float currWeight;

float spacing = maxWeight+.1;

float goldenRatio = ((sqrt(5) + 1 ) / 2);

int iter = 0, imgNum = (int)random(4);

boolean smallChaos = false;

PImage img;

//additional circles

int numCircs = 500;

float[] circX = new float[numCircs];

float[] circY = new float[numCircs];

float[] circD = new float[numCircs];

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void setup() {

  img = loadImage("jimin1.jpg");

  size(600, 700);

  background(9,19,35);

  px = width/2; 

  py = height/2;

  //additional circles-flashing stars

  for (int i = 0; i<numCircs; i = i+1) {

    circX[i] = random(width);

    circY[i] = random(height);

    circD[i] = random(0, 5);

  }

  spaceCircs ();

  bgCirc();

}

void draw() {

  faceGrid ();

  spacing += 0.01;

  //save("poster2.png");

}

void calcPointPos(float x, float y, float r, float graden) {

  px = x + cos(radians(graden))*(r/2);

  py = y + sin(radians(graden))*(r/2);

  if (smallChaos) {

    px = x + random(maxWeight)+ cos(radians(graden))*(r/2);

    py = y + random(maxWeight)+ sin(radians(graden))*(r/2);

  }

}

void faceGrid () {

  // face 

  for (int i = 34; i > 0; --i) { // for more speed

    degree = (iter * goldenRatio) * 360;

    r = sqrt(iter++) * spacing;

    calcPointPos(width/2, height/2, r, (degree % 360));

    color pix = img.get((int)px, (int)py);

    currWeight = map(brightness(pix), 255, 0, minWeight, maxWeight);

    strokeWeight(currWeight);

    stroke(250); // stroke(pix);

    point(px, py);

    if (px-10 <= 0 || px+10 >= width || py-10 <= 0 || py+10 >= height ) { 

      noLoop();

    }

  }

}

void spaceCircs () {

  //flashing circles space

  noStroke();

  fill(random(255));

  for (int i = 0; i<numCircs; i++) {

    ellipse(circX[i], circY[i], circD[i], circD[i]);

  }

}

void bgCirc () {

  //circle to keep flashing circles from affecting the main picture

  fill(9,19,35);

  noStroke();

  ellipse(width/2, height/2, 500, 500);

}