# ==========================================================================
#
#   Copyright NumFOCUS
#
#   Licensed under the Apache License, Version 2.0 (the "License");
#   you may not use this file except in compliance with the License.
#   You may obtain a copy of the License at
#
#          https://www.apache.org/licenses/LICENSE-2.0.txt
#
#   Unless required by applicable law or agreed to in writing, software
#   distributed under the License is distributed on an "AS IS" BASIS,
#   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
#   See the License for the specific language governing permissions and
#   limitations under the License.
#
# ==========================================================================*/

import itk
from sys import argv

# instantiate an auto pipeline
p = itk.auto_pipeline()

# from now, and until we call p.Stop(), all the new objects will be connected
# to the pipeline p, without having to give a name to any filter

itk.ImageFileReader.IUC2.New(FileName=argv[1])
itk.MedianImageFilter.IUC2IUC2.New(Radius=eval(argv[3]))
itk.CastImageFilter.IUC2IUC2.New()

# stop the auto_pipeline and test that the next (incompatible) filter is not
# automatically connected, and restart the auto pipeline
p.Stop()
itk.CastImageFilter.IF2IF2.New()
p.Start()

itk.ImageFileWriter.IUC2.New(FileName=argv[2])
p.Update()
