Inspiré par Computer Graphics and Art vol3 n°4, 4^e de couverture, « Hex Variations » de William Kolomyjec

// This sketch is part of the ReCode Project - http://recodeproject.com
// From Computer Graphics and Art vol3 no4 Back Cover
// by William Kolomyjec
// "Hex Variations"
// 
// Steve Berrick
// 2012
// Creative Commons license CC BY-SA 3.0

var _width = 600;
var _height = 900;
var _size = 20; // hexagon radius

function setup() {
 
 createCanvas(_width, _height);
 noLoop();
 
 background(255);
 noFill();
 stroke(0);
 strokeWeight(2);

}

function draw() {

 // clear background
 background(255);
 
 // line length (hypotenuse)
 var h = sin(PI/3) * _size;
 
 for (var i = 0; i <= _width / (_size * 3); i++) {
 for (var j = 0; j <= (_height / h) + 1; j++) {

 // reference points (centre of each hexagon)
 var x = i * _size * 3 + (_size / 2);
 var y = j * h;
 // offset each odd row
 if (j % 2 > 0) {
 x += _size * 1.5;
 }

 push();
 
 translate(x, y);
 
 // random hexagon 'rotation' (0, 120, 240 degrees)
 rotate(int(random(0, 3)) * PI/3);
 
 // draw line
 line(0, -h, 0, h);
 
 // draw arcs
 arc(-_size, 0, _size, _size, -PI/3, PI/3);
 arc( _size, 0, _size, _size, PI/3 * 2, PI/3 * 4); 
 
 pop();

 } 
 }

}

function mousePressed() {
 
 redraw();

}