# ==========================================================================
#
#   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

itk.auto_progress(2)

InputPixelType = itk.F
OutputPixelType = itk.F

InputImageType = itk.Image[InputPixelType, 2]
OutputImageType = itk.Image[OutputPixelType, 2]

reader = itk.ImageFileReader[InputImageType].New(FileName=argv[1])

filter = itk.GradientAnisotropicDiffusionImageFilter[
    InputImageType, OutputImageType
].New(
    reader,
    NumberOfIterations=int(argv[3]),
    TimeStep=float(argv[4]),
    ConductanceParameter=float(argv[5]),
)
filter.Update()

WritePixelType = itk.UC
WriteImageType = itk.Image[WritePixelType, 2]

rescaler = itk.RescaleIntensityImageFilter[OutputImageType, WriteImageType].New(
    filter, OutputMinimum=0, OutputMaximum=255
)
writer = itk.ImageFileWriter[WriteImageType].New(rescaler, FileName=argv[2])
writer.Update()
