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# Copyright 2019 David Grote
#
# This file is part of WarpX.
#
# License: BSD-3-Clause-LBNL
# This sets up an interface between Warp and WarpX, allowing access to WarpX data using
# classes from Warp.
# The routine warp_species will return an instance of the Species class from Warp,
# giving nearly all of the capability of that class, including accessing the data
# using down selection and all of the plots.
# The class WarpX_EM3D inherits from Warp's EM3D class. It primarily provides
# access to the field plotting routines.
import warp
from pywarpx import PGroup
from . import fields
# The particle weight is always the first pid
warp.top.wpid = 1
def warp_species(warp_type, picmi_species, level=0):
"""Returns a Warp species that has a reference to the WarpX particles.
"""
pgroups = PGroup.PGroups(ispecie=picmi_species.species_number, level=level)
return warp.Species(type=warp_type, pgroups=pgroups)
class _WarpX_FIELDtype(object):
"""Mirrors part of the EM3D_FIELDtype type from Warp
yf
"""
def __init__(self, yf):
self.yf = yf
class _WarpX_BLOCKtype(object):
"""Mirrors part of the EM3D_BLOCKtype type from Warp
core
xmin, ymin, zmin
xmax, ymax, zmax
dx, dy, dz
xrbnd, yrbnd, zrbnd
"""
def __init__(self, fields, picmi_grid):
self.core = _WarpX_FIELDtype(fields)
self.picmi_grid = picmi_grid
self.xmin = self.picmi_grid.lower_bound[0]
if self.picmi_grid.number_of_dimensions == 3:
self.ymin = self.picmi_grid.lower_bound[1]
else:
self.ymin = 0.
self.zmin = self.picmi_grid.lower_bound[-1]
self.xmax = self.picmi_grid.upper_bound[0]
if self.picmi_grid.number_of_dimensions == 3:
self.ymax = self.picmi_grid.upper_bound[1]
else:
self.ymax = 0.
self.zmax = self.picmi_grid.upper_bound[-1]
self.dx = (self.xmax - self.xmin)/self.picmi_grid.number_of_cells[0]
if self.picmi_grid.number_of_dimensions == 3:
self.dy = (self.ymax - self.ymin)/self.picmi_grid.number_of_cells[1]
else:
self.dy = 1.
self.dz = (self.zmax - self.zmin)/self.picmi_grid.number_of_cells[-1]
self.xrbnd = 0
self.yrbnd = 0
self.zrbnd = 0
class _WarpX_YEEFIELDtype(object):
"""Mirrors part of the EM3D_YEEFIELDtype type from Warp
Exp, Eyp, Ezp
Bxp, Byp, Bzp
Ex, Ey, Ez
Bx, By, Bz
Jx, Jy, Jz
"""
def __init__(self, level=0):
self.level = level
self._Ex_wrap = fields.ExWrapper(level, include_ghosts=True)
self._Ey_wrap = fields.EyWrapper(level, include_ghosts=True)
self._Ez_wrap = fields.EzWrapper(level, include_ghosts=True)
self._Bx_wrap = fields.BxWrapper(level, include_ghosts=True)
self._By_wrap = fields.ByWrapper(level, include_ghosts=True)
self._Bz_wrap = fields.BzWrapper(level, include_ghosts=True)
self._Jx_wrap = fields.JxWrapper(level, include_ghosts=True)
self._Jy_wrap = fields.JyWrapper(level, include_ghosts=True)
self._Jz_wrap = fields.JzWrapper(level, include_ghosts=True)
self._Ex_wrap._getlovects() # --- Calculated nghosts
self.nxguard = self._Ex_wrap.nghosts
self.nyguard = self._Ex_wrap.nghosts
self.nzguard = self._Ex_wrap.nghosts
def _get_wrapped_array(self, wrapper):
result = wrapper[...]
if len(result.shape) == 2:
# --- Add the middle dimension that Warp is expecting
result.shape = [result.shape[0], 1, result.shape[1]]
return result
@property
def Exp(self):
return self._get_wrapped_array(self._Ex_wrap)
@property
def Eyp(self):
return self._get_wrapped_array(self._Ey_wrap)
@property
def Ezp(self):
return self._get_wrapped_array(self._Ez_wrap)
@property
def Bxp(self):
return self._get_wrapped_array(self._Bx_wrap)
@property
def Byp(self):
return self._get_wrapped_array(self._By_wrap)
@property
def Bzp(self):
return self._get_wrapped_array(self._Bz_wrap)
@property
def Ex(self):
return self._get_wrapped_array(self._Ex_wrap)
@property
def Ey(self):
return self._get_wrapped_array(self._Ey_wrap)
@property
def Ez(self):
return self._get_wrapped_array(self._Ez_wrap)
@property
def Bx(self):
return self._get_wrapped_array(self._Bx_wrap)
@property
def By(self):
return self._get_wrapped_array(self._By_wrap)
@property
def Bz(self):
return self._get_wrapped_array(self._Bz_wrap)
@property
def Jx(self):
return self._get_wrapped_array(self._Jx_wrap)
@property
def Jy(self):
return self._get_wrapped_array(self._Jy_wrap)
@property
def Jz(self):
return self._get_wrapped_array(self._Jz_wrap)
class WarpX_EM3D(warp.EM3D):
"""Mirrors part of the Warp EM3D class, mostly diagnostics.
"""
def __init__(self, picmi_grid, level=0):
self.picmi_grid = picmi_grid
self.level = level
# --- Only define what is necessary for the diagnostics
self.fields = _WarpX_YEEFIELDtype(level)
self.block = _WarpX_BLOCKtype(self.fields, picmi_grid)
self.isactive = True
self.l_1dz = (picmi_grid.number_of_dimensions == 1)
self.l_2dxz = (picmi_grid.number_of_dimensions == 2)
try:
picmi_grid.nr
except AttributeError:
self.l_2drz = False
else:
self.l_2drz = True
self.l4symtry = False
self.l2symtry = False
self.nx = picmi_grid.number_of_cells[0]
if not self.l_2dxz:
self.ny = picmi_grid.number_of_cells[1]
else:
self.ny = 0
self.nz = picmi_grid.number_of_cells[-1]
self.zgrid = 0. # --- This should be obtained from WarpX
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