Symmetric Icons

const gridSize = 600;

const gmax = gridSize*gridSize;

let gridImage, initialized, tries, D;

let refSymmetry = true, symmetry;

​

function setup() {

  createCanvas(windowWidth, windowHeight);

  D = min (width,height);

  gridImage = createImage(gridSize, gridSize);

  gridImage.loadPixels();

  this.focus();

  generate()

}

​

function mousePressed() {

  symmetry = undefined;

  generate();

}

​

function keyTyped() {

  if (key >= '3' && key <= '9') {

    symmetry = int(key);

    generate()

  }

  if (key.toUpperCase() == 'R') {

    refSymmetry = !refSymmetry;

    generate();

  }

  else if (key == "?") {

    print(cpuVersion) 

  }

}

​

function generate() {

  initialized = false;

  tries = 0;

}

​

function draw() {

  background(0);

  if (!initialized) {

    noStroke();

    for (let i = 0; i < 20; i++) {

      fill(0);

      text (`Finding a good one. Try ${tries}.`, 10, 20);

      tries++;

      fill(255)

      text (`Finding a good one. Try ${tries}.`, 10, 20);

      cpuVersion.randomize(symmetry,refSymmetry);

      if (!cpuVersion.isBad()) {

        initialized = true;

        cpuVersion.adjustScale();

        //print (`nonzero:${cpuVersion.nonZero}, gridMax:${cpuVersion.gridMax}, countMax:${cpuVersion.countMax}, qCount:${cpuVersion.qCount}, parms: ${cpuVersion.parameters()}` );

        return;

      }

    }

    return;

  }

  cpuVersion.iterateBatch()

  let grid = cpuVersion.grid;

  let maxCount = 0;

  for (let count of grid) maxCount = max(count, maxCount);

  let logMax = log(maxCount+1)

  let pixels = gridImage.pixels;

  for (let i = 0; i < grid.length; i++) {

    let j = i*4;

    pixels[j] = pixels[j+1] = pixels[j+2] = log(grid[i]+1) / logMax*255

    pixels[j+3] = 255;

  }

  gridImage.updatePixels();

  image(gridImage, (width-D)/2, (height-D)/2, D, D)

}