let points

let scale

​

function setup() {

  createCanvas(400, 400);

  origin = createVector(width/2, height/2)

  scale = 50

  points = [  

    createVector(-1, 2),

    createVector(1, 2),

    createVector(-1, 1),

    createVector(1, 1),

    createVector(-1, 0),

    createVector(1, 0),

    createVector(-1, -1),

    createVector(1, -1),

]

}

​

function draw() {

  background(255);

  noFill()

  // strokeCap(ROUND)

  // strokeJoin(ROUND)

  strokeWeight(5+mouseX/20)

  beginShape()

​

  points.forEach(p => {

    vertex(p.x*scale+origin.x, p.y*scale+origin.y)

  })

  endShape()

}