P5 rectangle rotation

Rotation rectangle on P5 and finding the corners.

by Fabiano Gorziza

HTML

<script src="//cdnjs.cloudflare.com/ajax/libs/p5.js/0.3.3/p5.min.js"></script>

JavaScript

function setup() {
	createCanvas(400, 400);
}

var count = 0;

function draw() {
  // Fundo
  background(250);
  rectMode(CENTER);
  stroke(0,0,255);
  fill(0,0,255);
  count += 1;

  var box1X = 100;
  var box1Y = 100;
  var box2X = 160;
  var box2Y = 100;
  var box1R = 0+count;
  var box2R = 60;
  var box1W = 50;
  var box1H = 50;
  var box2W = 50;
  var box2H = 50;

	//if (mouseIsPressed){
		
		//new Retangulo(createVector(mouseX, mouseY), createVector(10, 10), rectagles, true, createVector(ceil(random(255)), ceil(random(255)), ceil(random(255))));
		translate(box1X, box1Y);
		rotate(radians(box1R));
		rect(0, 0, box1W, box1H);
		rotate(radians(-box1R));
		translate(-box1X, -box1Y);

		//translate(0, 0);
		translate(box2X, box2Y);
		rotate(radians(-box2R-count));
		rect(0, 0, box2W, box2H);
		rotate(radians(box2R+count));
		translate(-box2X, -box2Y);
		
		var box1Dots = [];
		var box1Dots = [];
		
		//box1Dots.push(createVector(100, 100)
		
  stroke(255,0,0);
  fill(255,0,0);

  var pointRotated = [];
  pointRotated.push(createVector(box1X, box1Y)); // Dot5
  pointRotated.push(GetPointRotated(box1X, box1Y, box1W, box1H, box1R, -box1W/2, box1H/2)); // Dot1
  pointRotated.push(GetPointRotated(box1X, box1Y, box1W, box1H, box1R, box1W/2, box1H/2)); // Dot2
  pointRotated.push(GetPointRotated(box1X, box1Y, box1W, box1H, box1R, -box1W/2, -box1H/2)); // Dot1
  pointRotated.push(GetPointRotated(box1X, box1Y, box1W, box1H, box1R, box1W/2, -box1H/2)); // Dot2

  for (var i=0;i<pointRotated.length;i++){
    ellipse(pointRotated[i].x,pointRotated[i].y,3,3); // dot 1
  }
}


function GetPointRotated(X, Y, W, H, R, Xos, Yos){
	// Cx, Cy // the coordinates of your center point in world coordinates
	// W      // the width of your rectangle
	// H      // the height of your rectangle
	// θ      // the angle you wish to rotate

	//The offset of a corner in local coordinates (i.e. relative to the pivot point)
	//(which corner will depend on the coordinate reference system used in...