// Daniel Shiffman

// http://natureofcode.com

​

// Interactive Selection

// http://www.genarts.com/karl/papers/siggraph91.html

​

let population;

​

function setup() {

  createCanvas(640, 240);

  colorMode(RGB, 1);

  // This is a very small population!

  let populationSize = 8;

  // A pretty high mutation rate here, our population is rather small we need to enforce variety

  let mutationRate = 0.05;

  // Create the population

  population = new Population(mutationRate, populationSize);

  // A p5.js button

  button = createButton("evolve new generation");

  button.mousePressed(nextGeneration);

  button.position(10, 10);

}

​

function draw() {

  background(1);

  // Draw the flowers

  population.show();

  // Check for increasing fitness

  population.rollover(mouseX, mouseY);

  textAlign(LEFT);

  text("Generation " + population.generations, 12, height - 10);

}

​

// If the button is pressed, evolve next generation

function nextGeneration() {

  population.selection();

  population.reproduction();

}

​