utilities/progress_bar/progress_bar.py

Refer to the Progress Bar Example.

#!/usr/bin/env python3
 
# $Id$
 
# Copyright (C) 2008-2014, Roman Lygin. All rights reserved.
# Copyright (C) 2014-2025, CADEX. All rights reserved.
 
# This file is part of the Manufacturing Toolkit software.
 
# You may use this file under the terms of the BSD license as follows:
 
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions are met:
# * Redistributions of source code must retain the above copyright notice,
# this list of conditions and the following disclaimer.
# * Redistributions in binary form must reproduce the above copyright notice,
# this list of conditions and the following disclaimer in the documentation
# and/or other materials provided with the distribution.
 
# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
# AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
# IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
# ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
# LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
# CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
# SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
# INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
# CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
# ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
# POSSIBILITY OF SUCH DAMAGE.
 
import sys
import os
 
from pathlib import Path
 
import manufacturingtoolkit.CadExMTK as mtk
 
sys.path.append(os.path.abspath(os.path.dirname(Path(__file__).resolve()) + r"/../../"))
 
import mtk_license as license
 
class ProgressBarObserver(mtk.ProgressStatus_Observer):
    def __init__(self):
        super().__init__()
 
    def ChangedValue(self, theInfo: mtk.ProgressStatus):
        print(theInfo.Value())
 
    def Completed(self, theInfo: mtk.ProgressStatus):
        print(f"{theInfo.Value()}: complete!")
 
def main(theSource: str):
    aKey = license.Value()
 
    if not mtk.LicenseManager.Activate(aKey):
        print("Failed to activate Manufacturing Toolkit license.")
        return 1
 
    aModel = mtk.ModelData_Model()
 
    # An observer must outlive progress status,
    # so it is created outside the using scope
    anObserver = ProgressBarObserver()
 
    with mtk.ProgressStatus() as aStatus:
        # Register an observer to progress status
        aStatus.Register(anObserver)
 
        # The top scope occupies the whole progress status range
        with mtk.ProgressScope(aStatus) as aTopScope:
             # 50% of TopScope for file importing
            with mtk.ProgressScope(aTopScope, 50) as aReaderScope:
                aReader = mtk.ModelData_ModelReader()
                # Connect progress status object
                aReader.SetProgressStatus(aStatus)
                aReader.Read(mtk.UTF16String(theSource), aModel)
                        
            if not aModel.IsEmpty() and not aStatus.WasCanceled():
                # The remaining 50% of TopScope for meshing
                with mtk.ProgressScope(aTopScope, 50):
                    aMesher = mtk.ModelAlgo_MeshGenerator()
                    # Connect progress status object
                    aMesher.SetProgressStatus(aStatus)
                    aMesher.Generate(aModel)
 
    # Observer will be automatically unregistered from progress status on destruction (end of the "with" scope).
 
    return 0
 
if __name__ == "__main__":
    if len(sys.argv) != 2:
        print("Usage: " + os.path.abspath(Path(__file__).resolve()) + " <input_file>, where:")
        print("    <input_file>  is a name of the file to be read")
        sys.exit(1)
 
    aSource = os.path.abspath(sys.argv[1])
 
    sys.exit(main(aSource))