Lerp Example

/* LERP example (c) 2015 Giles Cartmel */

int squares = 25; // well, rectangles anyway

void setup() {
  size(900,600); // choose any screen size
  background(0);
  stroke(255);
  noLoop(); // just draw once
}

void draw() {
  // split the x size (width) into the defined equal squares
  for (int x = 0; x <= squares; x++) {
    line(lerp(0,width-1,(float) x/squares)
        ,0
        ,lerp(0,width-1,(float) x/squares)
        ,height-1
        );
  }
  // split the y size (height) into the defined equal squares
  for (int y = 0; y <= squares; y++) {
    line(0
        ,lerp(0,height-1,(float) y/squares)
        ,width-1
        ,lerp(0,height-1,(float) y/squares)
        );
  }
}