def setup
  background(220)
  strokeWeight(3)
  beginShape(POINTS)
  vertex(30, 20)
  vertex(85, 20)
  vertex(85, 75)
  vertex(30, 75)
  endShape
end

def setup
  createCanvas(100, 100, WEBGL)
  background(240, 240, 240)
  fill(237, 34, 93)
  noStroke
  beginShape
  vertex(0, 35)
  vertex(35, 0)
  vertex(0, -35)
  vertex(-35, 0)
  endShape()
end

def setup
  createCanvas(100, 100, WEBGL)
  background(240, 240, 240)
  fill(237, 34, 93)
  noStroke
  beginShape
  vertex(-10, 10)
  vertex(0, 35)
  vertex(10, 10)
  vertex(35, 0)
  vertex(10, -8)
  vertex(0, -35)
  vertex(-10, -8)
  vertex(-35, 0)
  endShape
end

def setup
  strokeWeight(3)
  stroke(237, 34, 93)
  beginShape(LINES)
  vertex(10, 35)
  vertex(90, 35)
  vertex(10, 65)
  vertex(90, 65)
  vertex(35, 10)
  vertex(35, 90)
  vertex(65, 10)
  vertex(65, 90)
  endShape
end

def setup 
  createCanvas(100, 100, WEBGL)
  @sides = 3
  fill(237, 34, 93)
  strokeWeight(3)
end

def draw 
  background(200)
  rotateX(frameCount * 0.01)
  rotateZ(frameCount * 0.01)
  ngon(@sides, 0, 0, 80)
end

def mouseClicked 
  if (@sides > 6) 
    @sides = 3
  else 
    @sides += 1
  end
end

def ngon(n, x, y, d) 
  beginShape(TESS)
  (0..n).each do |i|
    angle = TWO_PI / n * i
    px = x + sin(angle) * d / 2
    py = y - cos(angle) * d / 2
    vertex(px, py, 0)
  end
  (0..n).each do |i|
    angle = TWO_PI / n * i
    px = x + sin(angle) * d / 4
    py = y - cos(angle) * d / 4
    vertex(px, py, 0)
  end
  endShape
end