Project 09: Computational Portrait

let img;
var Nucleotide = 1;
var Nucs = ['A', 'C', 'T', 'G', 'U']

function preload() {
	img = loadImage("https://i.imgur.com/wOvSeLp.jpg?1");
}

function setup() {
  createCanvas(480, 480);
  background(255);
  img.resize(width, height);
  img.loadPixels();
  frameRate(75);
  imageMode(CENTER);
}

function draw() {
  	var x = floor(random(img.width)); // random x position for the letter
  	var y = floor(random(img.height)); // random y position for the letter
  	var pixel = img.get(x, y); // select color from the image and store in pixel
  	stroke(pixel);	//make the stroke color the color of the according image pixel
  	strokeWeight(2);
  	fill(pixel);	//make the text color the color of the according image pixel
  	textSize(10)
	if(Nucleotide == 1) { 
  		text('A', x, y);	//A, for adenine
  	}
 	else if(Nucleotide == 2){ 
  		text('C', x, y);	//C, for cytosine
  	}
  	else if(Nucleotide == 3){ 
  		text('T', x, y);	//T, for thymine
  	}
  	else if(Nucleotide == 4){ 
  		text('G', x, y);	//G, for guanine
  	}
  	else { 
  		text('U', x, y);	//U, for uracil
  	}
  	if (mouseIsPressed) {
  		text(random(Nucs), x, y)	//while the mouse is being held down, randomize pixel letters (any nucleotide can be generated)	
  	}
}

function mousePressed() {
	if(Nucleotide == 1) {
		Nucleotide = 2;	//click once and set pixel letter to C
	}
	else if(Nucleotide == 2) {
		Nucleotide = 3;	//click again and set pixel letter to T
	}
	else if(Nucleotide == 3) {
		Nucleotide = 4;	//click again and set pixel letter to G
	}
	else if(Nucleotide == 4) {
		Nucleotide = 5;	//click again and set pixel letter to U
	}
	else {
		Nucleotide = 1;	//click again and reset pixel letter to A
	}
}