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# -----------------------------------------------------------------------
# Copyright: 2010-2022, imec Vision Lab, University of Antwerp
# 2013-2022, CWI, Amsterdam
#
# Contact: astra@astra-toolbox.com
# Website: http://www.astra-toolbox.com/
#
# This file is part of the ASTRA Toolbox.
#
#
# The ASTRA Toolbox 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 3 of the License, or
# (at your option) any later version.
#
# The ASTRA Toolbox 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 the ASTRA Toolbox. If not, see <http://www.gnu.org/licenses/>.
#
# -----------------------------------------------------------------------
from . import data2d_c as d
from .pythonutils import checkArrayForLink
def clear():
"""Clear all 2D data objects."""
return d.clear()
def delete(ids):
"""Delete a 2D object.
:param ids: ID or list of ID's to delete.
:type ids: :class:`int` or :class:`list`
"""
return d.delete(ids)
def create(datatype, geometry, data=None):
"""Create a 2D object.
:param datatype: Data object type, '-vol' or '-sino'.
:type datatype: :class:`string`
:param geometry: Volume or projection geometry.
:type geometry: :class:`dict`
:param data: Data to fill the constructed object with, either a scalar or array.
:type data: :class:`float` or :class:`numpy.ndarray`
:returns: :class:`int` -- the ID of the constructed object.
"""
return d.create(datatype,geometry,data)
def link(datatype, geometry, data):
"""Link a 2D numpy array with the toolbox.
:param datatype: Data object type, '-vol' or '-sino'.
:type datatype: :class:`string`
:param geometry: Volume or projection geometry.
:type geometry: :class:`dict`
:param data: Numpy array to link
:type data: :class:`numpy.ndarray`
:returns: :class:`int` -- the ID of the constructed object.
"""
checkArrayForLink(data)
return d.create(datatype,geometry,data,True)
def store(i, data):
"""Fill existing 2D object with data.
:param i: ID of object to fill.
:type i: :class:`int`
:param data: Data to fill the object with, either a scalar or array.
:type data: :class:`float` or :class:`numpy.ndarray`
"""
return d.store(i, data)
def get_geometry(i):
"""Get the geometry of a 2D object.
:param i: ID of object.
:type i: :class:`int`
:returns: :class:`dict` -- The geometry of object with ID ``i``.
"""
return d.get_geometry(i)
def change_geometry(i, geom):
"""Change the geometry of a 2D object.
:param i: ID of object.
:type i: :class:`int`
:param geom: new geometry.
:type geom: :class:`dict`
"""
return d.change_geometry(i, geom)
def get(i):
"""Get a 2D object.
:param i: ID of object to get.
:type i: :class:`int`
:returns: :class:`numpy.ndarray` -- The object data.
"""
return d.get(i)
def get_shared(i):
"""Get a 2D object with memory shared between the ASTRA toolbox and numpy array.
:param i: ID of object to get.
:type i: :class:`int`
:returns: :class:`numpy.ndarray` -- The object data.
"""
return d.get_shared(i)
def get_single(i):
"""Get a 2D object in single precision.
:param i: ID of object to get.
:type i: :class:`int`
:returns: :class:`numpy.ndarray` -- The object data.
"""
return d.get_single(i)
def shepp_logan(geometry, modified=True, returnData=True):
"""Create a 2D data object with a Shepp-Logan phantom.
:param geometry: Volume geometry
:param modified: If False, generate the original Shepp-Logan phantom
:param returnData: If False, only return the ID of the new data object
:returns: :class:`int` or (:class:`int`, :class`numpy.ndarray`)
"""
i = create('-vol', geometry)
d.shepp_logan(i, modified)
if returnData:
return i, get(i)
else:
return i
def info():
"""Print info on 2D objects in memory."""
return d.info()
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