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` ````
<script src="https://cdnjs.cloudflare.com/ajax/libs/p5.js/0.3.16/p5.min.js"></script>
```

` ````
html,
body {
margin: 0;
padding: 0;
}
```

` ````
var hexPoints_xlarge = null;
var hexSize = 60;
function setup() {
createCanvas(windowWidth, windowHeight);
frameRate(1);
ellipseMode(CENTER);
// Get the 1st array of hexPoints
hexPoints_xlarge = makeGrid(hexSize);
}
function windowResized() {
resizeCanvas(windowWidth, windowHeight);
hexPoints_xlarge = makeGrid(hexSize);
}
function draw() {
// Paint it black
background(color(0));
fill(color(255));
noStroke();
// Go thru them drawing hexes
var hPoint = null;
for (var i = 0; i < hexPoints_xlarge.length; i++) {
hPoint = hexPoints_xlarge[i];
fill(color(255, 255, 255));
drawHex(hPoint.x, hPoint.y, hexSize+1); // 1px larger to hide edges
}
}
function drawHex(x, y, radius) {
// Work out the outside 6 points.
var NEx = -radius * sin(radians(-30));
var NEy = -radius * cos(radians(-30));
var Ex = -radius * sin(radians(-90));
var Ey = -radius * cos(radians(-90));
var SEx = -radius * sin(radians(-150));
var SEy = -radius * cos(radians(-150));
var SWx = -radius * sin(radians(-210));
var SWy = -radius * cos(radians(-210));
var Wx = -radius * sin(radians(-270));
var Wy = -radius * cos(radians(-270));
var NWx = -radius * sin(radians(-330));
var NWy = -radius * cos(radians(-330));
// Now we need to work out the mid points
// between the NE and E points, and so on
// so we can slit the whole thing into 4
// bits
var NEEx = lerp(NEx, Ex, 0.5);
var NEEy = lerp(NEy, Ey, 0.5);
var SEEx = lerp(SEx, Ex, 0.5);
var SEEy = lerp(SEy, Ey, 0.5);
var NWWx = lerp(NWx, Wx, 0.5);
var NWWy = lerp(NWy, Wy, 0.5);
var SWWx = lerp(SWx, Wx, 0.5);
var SWWy = lerp(SWy, Wy, 0.5);
// This is where we work out the colours. lerpColor really
// doesn't seem to be working for me in p5js otherwise
// I'd be using HSB to find nice colour palettes. Until
// then, adapt the code below to fancy up the colours.
var r1 = int(random(0, 255));
var g1 = int(random(0, 255));
var b1 = int(random(0, 255));
var r2 = int(random(0, 255));
var g2 = int(random(0, 255));
var b2 = int(random(0, 255));
var c1 = color(r1, g1, b1);
var c4 = color(r2, g2, b2);
var c2 = lerpColor(c1, c4, 0.33);
var c3 = lerpColor(c1, c4, 0.66);
/*
var c1 = color(int(random(0,100)), 80, 100);
var c4 = color(int(random(0,100)),20,100);
var c2 = lerpColor(c1, c4, 0.33);
var c3 = lerpColor(c1, c4, 0.66);
*/
fill(c1);
push();
translate((windowWidth / 2) + x, (windowHeight / 2) + y);
var newAngle = int(random(0, 6)) * 60;
rotate(radians(newAngle));
// Now draw the 4 different slices of the hex
stroke(c1);
fill(c1);
beginShape();
vertex(NEx, NEy);
vertex(NEEx, NEEy);
vertex(NWWx, NWWy);
vertex(NWx, NWy);
vertex(NEx, NEy);
endShape();
stroke(c2);
fill(c2);
beginShape();
vertex(NEEx, NEEy);
vertex(Ex, Ey);
vertex(Wx, Wy);
vertex(NWWx, NWWy);
vertex(NEEx, NEEy);
endShape();
stroke(c3);
fill(c3);
beginShape();
vertex(Ex, Ey);
vertex(SEEx, SEEy);
vertex(SWWx, SWWy);
vertex(Wx, Wy);
vertex(Ex, Ey);
endShape();
stroke(c4);
fill(c4);
beginShape();
vertex(SEEx, SEEy);
vertex(SEx, SEy);
vertex(SWx, SWy);
vertex(SWWx, SWWy);
vertex(SEEx, SEEy);
endShape();
pop();
}
function makeGrid(radius) {
// This is going to hold the array of hexPoints that we return
var hexPoints = [];
// first we can work out the total width of a hexagon
// this will be twice the radius
var hex_width = radius * 2;
// Now we need to work out the height, to do that we
// need to move the second point straight up and then
// rotate it
var NEx = -radius * sin(radians(-30));
var NEy = -radius * cos(radians(-30));
var hex_height = abs(NEy * 2);
var leftover_width = (windowWidth / 2) - (hex_width / 2);
var number_of_hexes = ceil(leftover_width / hex_width);
var start_x_offset = -(number_of_hexes * hex_width) - (hex_width / 2);
var leftover_height = (windowHeight / 2) - (hex_height / 2);
number_of_hexes = ceil(leftover_height / (hex_height));
var start_y_offset = -(number_of_hexes * hex_height) - (hex_height / 2);
var counter = 0;
for (var y = start_y_offset; y <= abs(start_y_offset) + (hex_height); y += (hex_height / 2)) {
var shift_hex = false;
if (counter % 2 == 0) {
shift_hex = true;
}
for (var x = start_x_offset; x <= abs(start_x_offset); x += hex_width * 1.5) {
var newX = x;
if (shift_hex) {
newX += hex_width * 0.75;
}
hexPoints.push(new HexPoint(newX, y));
}
counter++;
}
return hexPoints;
}
// This is just a point that's the center of a hex
function HexPoint(x, y) {
this.x = x;
this.y = y;
}
```

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