#!/usr/bin/python
# -*- coding: utf-8 -*-

# ---------------------------------------------------------------------
# Copyright (c) 2012 Michael Hull.
# All rights reserved.
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions
# are met:
#
#  - Redistributions of source code must retain the above copyright
#    notice, this list of conditions and the following disclaimer.
#  - Redistributions in binary form must reproduce the above copyright
#    notice, this list of conditions and the following disclaimer in
#    the documentation and/or other materials provided with the
#    distribution.
#
# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
# HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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# ----------------------------------------------------------------------

import operator
from morphforge.traces.tracetypes import TraceFixedDT
from morphforge.units import NpPqWrappers
from morphforge.traces.traceobjpluginctrl import TraceOperatorCtrl


[docs]class TraceOperator_TraceFixedDT_TraceFixedDT(object):

    @classmethod
[docs]    def get_new_time_axis(cls, lhs, rhs):
        assert type(lhs) == TraceFixedDT
        assert type(rhs) == TraceFixedDT

        min_time = max(lhs.get_min_time(), rhs.get_min_time())
        max_time = min(lhs.get_max_time(), rhs.get_max_time())

        new_dt = min(lhs.get_dt_new(), rhs.get_dt_new())
        assert max_time - min_time > new_dt * 2, 'The new trace will only have a single point'
        return NpPqWrappers.arange(min_time, max_time, new_dt)

    @classmethod
[docs]    def do_add(cls, lhs, rhs):
        time_axis = cls.get_new_time_axis(lhs, rhs)
        return TraceFixedDT(time_axis, 
                            lhs.get_values(time_axis) + rhs.get_values(time_axis))

    @classmethod
[docs]    def do_sub(cls, lhs, rhs):
        time_axis = cls.get_new_time_axis(lhs, rhs)
        return TraceFixedDT(time_axis, 
                            lhs.get_values(time_axis) - rhs.get_values(time_axis))

    @classmethod
[docs]    def do_mul(cls, lhs, rhs):
        time_axis = cls.get_new_time_axis(lhs, rhs)
        return TraceFixedDT(time_axis, 
                            lhs.get_values(time_axis) * rhs.get_values(time_axis))
    @classmethod
[docs]    def do_div(cls, lhs, rhs):
        time_axis = cls.get_new_time_axis(lhs, rhs)
        return TraceFixedDT(time_axis, lhs.get_values(time_axis) / rhs.get_values(time_axis))


# FixedDT (+-*/) FixedDT
TraceOperatorCtrl.add_trace_operator(operator_type=operator.__add__,
        lhs_type=TraceFixedDT, rhs_type=TraceFixedDT,
        operator_func=TraceOperator_TraceFixedDT_TraceFixedDT.do_add,
        flag='default')
TraceOperatorCtrl.add_trace_operator(operator_type=operator.__sub__,
        lhs_type=TraceFixedDT, rhs_type=TraceFixedDT,
        operator_func=TraceOperator_TraceFixedDT_TraceFixedDT.do_sub,
        flag='default')
TraceOperatorCtrl.add_trace_operator(operator_type=operator.__mul__,
        lhs_type=TraceFixedDT, rhs_type=TraceFixedDT,
        operator_func=TraceOperator_TraceFixedDT_TraceFixedDT.do_mul,
        flag='default')
TraceOperatorCtrl.add_trace_operator(operator_type=operator.__div__,
        lhs_type=TraceFixedDT, rhs_type=TraceFixedDT,
        operator_func=TraceOperator_TraceFixedDT_TraceFixedDT.do_div,
        flag='default')