from baker import get_phis

class face(object):
  def __init__(self, name):
    self.name      = name
    self.verts     = []
    self.neighbors = []

  def add_vert(self, v):
    """
       v should be an index into grid.points
    """
    self.verts.append(v)

  def add_neighbor(self, n):
    """
       reference to another face object
    """
    self.neighbors.append(n)

  def contains(self, X, grid):
    R    = [grid.points[i] for i in self.verts]

    phis = get_phis(X, R)

    r = True
    if [i for i in phis if i < 0.0]:
      r = False
    return r

  def __str__(self):
    neighbors = [i.name for i in self.neighbors]
    return '%s: verts: %s neighbors: [%s]' %\
           (
             self.name,
             self.verts,
             ", ".join(neighbors)
           )