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#!/usr/bin/env python3
# encoding: utf-8
"""
_ErrorCheck.py
Created by Graham Dennis on 2008-02-02.
Copyright (c) 2008-2012, Graham Dennis
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 2 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
"""
from xpdeint.Features._Feature import _Feature
from xpdeint.Segments.Integrators.FixedStep import FixedStep
from xpdeint.Operators.DeltaAOperator import DeltaAOperator
from xpdeint.Vectors.NoiseVector import NoiseVector
class _ErrorCheck (_Feature):
def post_preflight(self):
super(_ErrorCheck, self).preflight()
for mg in self.getVar('momentGroups'):
mg.processedVector.aliases.add('_%s_halfstep' % mg.outputField.name)
# When we have error checking, every dynamic noise vector used by an integrator in a fixed step integrator
# needs a '2' noise vector alias for generating two half-step noises and adding them.
if 'ErrorCheck' in self.getVar('features'):
noiseVectorsNeedingAlias = set()
# Loop over all fixed-step integrators ...
for fixedStepIntegrator in [o for o in self.getVar('templates') if isinstance(o, FixedStep)]:
# ... adding the dynamic noise vectors of that integrator
noiseVectorsNeedingAlias.update(fixedStepIntegrator.dynamicNoiseVectors)
for noiseVector in noiseVectorsNeedingAlias:
noiseVector.aliases.add('_%s2' % noiseVector.id)
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