#!/usr/bin/env python

from convention import *

import_convention(globals())

import fdtd

class FDTD(object):

    @classmethod

    def next_efield(self, previous_efield, previous_hfield, step = {"time":2, "space":2}):

        current_efield = numpy.zeros_like(previous_hfield)

#         print step["time_step"]

        for location in current_efield:

            current_efield[location] = previous_efield[location] + (previous_hfield[location+1] - previous_hfield[location-1]) * step["space"] / step["time"]

        # main algorithm

        # half-completed

        return current_efield

    @classmethod

    def next_hfield(self, previous_efield, step = {"time":2, "space":2}):

        current_hfield

        return current_hfield

previous_fieid_array = numpy.zeros(100)

two_previous_fieldarray = numpy.zeros(100)

print previous_fieid_array

print FDTD.next_efield(two_previous_fieldarray, two_previous_fieldarray)