#!/usr/bin/env python
##############################################################################
#
# diffpy.pdfmorph by DANSE Diffraction group
# Simon J. L. Billinge
# (c) 2010 Trustees of the Columbia University
# in the City of New York. All rights reserved.
#
# File coded by: Chris Farrow
#
# See AUTHORS.txt for a list of people who contributed.
# See LICENSE.txt for license information.
#
##############################################################################
"""class MorphISphere -- apply inverse spherical shape function
class MorphISpheroid -- apply inverse spheroidal shape function
"""
import numpy
from diffpy.pdfmorph.morphs.morph import LABEL_GR, LABEL_RA, Morph
from diffpy.pdfmorph.morphs.morphshape import _sphericalCF, _spheroidalCF
[docs]
class MorphISphere(Morph):
"""Apply inverse spherical characteristic function to the morph
Configuration Variables
-----------------------
iradius
The radius of the sphere.
"""
# Define input output types
summary = "Apply inverse spherical characteristic function to morph"
xinlabel = LABEL_RA
yinlabel = LABEL_GR
xoutlabel = LABEL_RA
youtlabel = LABEL_GR
parnames = ["iradius"]
[docs]
def morph(self, x_morph, y_morph, x_target, y_target):
"""Apply a scale factor."""
Morph.morph(self, x_morph, y_morph, x_target, y_target)
f = _sphericalCF(x_morph, 2 * self.iradius)
with numpy.errstate(divide="ignore", invalid="ignore"):
self.y_morph_out /= f
self.y_morph_out[f == 0] = 0
return self.xyallout
# End of class MorphISphere
[docs]
class MorphISpheroid(Morph):
"""Apply inverse spherical characteristic function to the morph
Configuration Variables
-----------------------
iradius
The equatorial radius of the spheroid.
ipradius
The polar radius of the spheroid.
"""
# Define input output types
summary = "Apply inverse spheroidal characteristic function to morph"
xinlabel = LABEL_RA
yinlabel = LABEL_GR
xoutlabel = LABEL_RA
youtlabel = LABEL_GR
parnames = ["iradius", "ipradius"]
[docs]
def morph(self, x_morph, y_morph, x_target, y_target):
"""Apply a scale factor."""
Morph.morph(self, x_morph, y_morph, x_target, y_target)
f = _spheroidalCF(x_morph, self.iradius, self.ipradius)
with numpy.errstate(divide="ignore", invalid="ignore"):
self.y_morph_out /= f
self.y_morph_out[f == 0] = 0
return self.xyallout
# End of class MorphSpheroid