advgeom/brepsimplify/Program.cs

Refer to the BRep Simplification Example.

// ****************************************************************************
// $Id$
//
// Copyright (C) 2008-2014, Roman Lygin. All rights reserved.
// Copyright (C) 2014-2023, CADEX. All rights reserved.
//
// This file is part of the CAD Exchanger software.
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// 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:
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//   this list of conditions and the following disclaimer.
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using cadex;
using System;
using System.Runtime.InteropServices;
 
namespace brepsimplify
{
    class FaceCounter : ModelData_Model.VoidElementVisitor
    {
        public FaceCounter()
        {
            NumberOfFaces = 0;
        }
 
        public override void Apply(ModelData_Part thePart)
        {
            ModelData_BRepRepresentation aBRep = thePart.BRepRepresentation();
            ModelData_BodyList aBodyList = aBRep.Get();
            for (uint i = 0; i < aBodyList.Size(); ++i)
            {
                ModelData_Body aBody = aBodyList.Element(i);
                ModelData_Shape.Iterator aFaceIt = new ModelData_Shape.Iterator(aBody, ModelData_ShapeType.ModelData_ST_Face);
                while (aFaceIt.HasNext())
                {
                    aFaceIt.Next();
                    ++NumberOfFaces;
                }
            }
        }
 
        public int NumberOfFaces { get; private set; }
    }
 
    class Program
    {
        // For more information see https://stackoverflow.com/questions/8836093/how-can-i-specify-a-dllimport-path-at-runtime
        [DllImport("kernel32.dll", CharSet = CharSet.Auto, SetLastError = true)]
        static extern bool SetDllDirectory(string lpPathName);
 
        static int Main(string[] args)
        {
            // Add runtime path to CAD Exchanger libraries (e.g. compiled with Visual Studio 2017)
            SetDllDirectory("../../../../../../win64/vc14.1/bin");
 
            string aKey = LicenseKey.Value();
 
            // Activate the license (aKey must be defined in cadex_license.cs)
            if (!LicenseManager.Activate(aKey))
            {
                Console.WriteLine("Failed to activate CAD Exchanger license.");
                return 1;
            }
 
            if (args.Length != 2)
            {
                Console.WriteLine("Usage: " + System.Reflection.Assembly.GetExecutingAssembly().Location
                + " <input_file> <output_file>, where:");
                Console.WriteLine("    <input_file>  is a name of the ACIS file to be read");
                Console.WriteLine("    <output_file> is a name of the CDX file to Save() the model");
                return 1;
            }
 
            string aSource = args[0];
            string aDest = args[1];
 
            ModelData_ModelReader aReader = new ModelData_ModelReader();
 
            ModelData_Model aModel = new ModelData_Model();
 
            // Opening and converting the file
            if (!aReader.Read(new Base_UTF16String(aSource), aModel))
            {
                Console.WriteLine("Failed to open and convert the file " + aSource);
                return 1;
            }
 
            // Basic info about model
            FaceCounter aBeforeCounter = new FaceCounter();
            aModel.Accept(aBeforeCounter);
            Console.WriteLine("Model name: " + aModel.Name());
            Console.WriteLine("# of faces before: " + aBeforeCounter.NumberOfFaces);
 
            // Running the simplifier
            ModelSimplifier_SimplifierBuilder aBuilder = new ModelSimplifier_SimplifierBuilder();
            aBuilder.SetLevel(ModelSimplifier_SimplifierBuilder.SimplificationLevel.High);
            aBuilder.SetFeatureSize(ModelSimplifier_SimplifierBuilder.SimplifiedFeatureSize.Large);
            ModelSimplifier_Simplifier aSimplifier = aBuilder.CreatePipeline();
 
            ModelData_Model aNewModel = aSimplifier.Perform(aModel);
 
            // How many shapes does simplified model contain?
            FaceCounter anAfterCounter = new FaceCounter();
            aNewModel.Accept(anAfterCounter);
            Console.WriteLine("# of faces after: " + anAfterCounter.NumberOfFaces);
 
            // Saving the simplified model
            if (!new ModelData_ModelWriter().Write(aNewModel, new Base_UTF16String(aDest)))
            {
                Console.WriteLine("Failed to save the .cdx file");
                return 1;
            }
 
            return 0;
        }
    }
}