def isEdgeVisible(self, ip, edge):
    """
    Return true iff the point lies to its right when the edge points down
    @param ip point index
    @param edge (2 point indices with orientation)
    @return True if visible    
    """
    area = self.getArea(ip, edge[0], edge[1])
    if area < self.EPS:
      return True
    return False

    Return true iff the point lies to its right when the edge points down
    @param ip point index
    @param edge (2 point indices with orientation)
    @return True if visible    
    
recipes/Python/579021_Delaunay_triangulation/recipe-579021.py