code: def set_ortho(self, l, r, b, t, n, f):
          
          self.matrix = transforms.ortho(l, r, b, t, n, f)
docs: Set ortho transform
  
          Parameters
          ----------
          l : float
              Left.
          r : float
              Right.
          b : float
              Bottom.
          t : float
              Top.
          n : float
              Near.
          f : float
              Far.