function setup() {
  createCanvas(windowWidth,
               windowHeight);
  background(234, 234, 234);
}

function draw()
{
  noStroke();
  fill(350, 270, 230, 80 );

  //adding value to the x coordinate of the first point.
  triangle(3 + frameCount / 2, 75, 30, 290, 270, 200);
}