advgeom/brepsimplify/main.cxx

Refer to the BRep Simplification Example.

// ****************************************************************************
// $Id$
//
// Copyright (C) 2008-2014, Roman Lygin. All rights reserved.
// Copyright (C) 2014-2021, CADEX. All rights reserved.
//
// This file is part of the CAD Exchanger software.
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//
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// modification, are permitted provided that the following conditions are met:
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#include <cadex/LicenseManager_Activate.h>
#include <cadex/ACIS_Reader.hxx>
#include <cadex/ModelData_Body.hxx>
#include <cadex/ModelData_BodyList.hxx>
#include <cadex/ModelData_BRepRepresentation.hxx>
#include <cadex/ModelData_Model.hxx>
#include <cadex/ModelData_Part.hxx>
#include <cadex/ModelSimplifier_Simplifier.hxx>
#include <cadex/ModelSimplifier_SimplifierBuilder.hxx>

#include <iostream>

#include "../../cadex_license.cxx"


using namespace std;
using namespace cadex;

class FaceCounter : public ModelData_Model::VoidElementVisitor
{
public:
    void operator() (const ModelData_Part& thePart) override
    {
        auto aBRep = thePart.BRepRepresentation();
        const ModelData_BodyList& aBodyList = aBRep.Get();
        for (ModelData_BodyList::SizeType i = 0; i < aBodyList.Size(); ++i) {
            const ModelData_Body& aBody = aBodyList[i];
            ModelData_Shape::Iterator aFaceIt (aBody, ModelData_ST_Face);
            while (aFaceIt.HasNext()) {
                aFaceIt.Next();
                ++myNumberOfFaces;
            }
        }
    }

    size_t NumberOfFaces () const
    {
        return myNumberOfFaces;
    }

private:
    size_t myNumberOfFaces = 0;
};

int main (int argc, char *argv[])
{
    auto aKey = LicenseKey::Value();

    // Activate the license (aKey must be defined in cadex_license.cxx)
    if (!CADExLicense_Activate (aKey)) {
        cerr << "Failed to activate CAD Exchanger license." << endl;
        return 1;
    }

    if (argc != 3) {
        cerr << "Usage: " << argv[0] << " <input_file> <output_file>, where:"   << endl;
        cerr << "    <input_file>  is a name of the ASIC file to be read"       << endl;
        cerr << "    <output_file>  is a name of the XML file to be saved"      << endl;
        return 1;
    }

    const char* aSource = argv[1];
    const char* aDest   = argv[2];

    ACIS_Reader aReader;

    ModelData_Model aModel;

    // Reading the file
    if (!aReader.ReadFile (aSource)) {
        cerr << "Failed to read the file " << aSource << endl;
        return 1;
    }

    // Making a model data
    if (!aReader.Transfer (aModel)) {
        cerr << "Failed to transfer model data to specified format" << endl;
        return 1;
    }

    // Basic info about model
    FaceCounter aBeforeCounter;
    aModel.Accept (aBeforeCounter);
    cout << "Model name: "  << aModel.Name() << endl;
    cout << "# of faces before: "  << aBeforeCounter.NumberOfFaces() << endl;

    // Running the simplifier
    ModelSimplifier_SimplifierBuilder aBuilder;
    aBuilder.SetLevel (ModelSimplifier_SimplifierBuilder::High);
    aBuilder.SetFeatureSize (ModelSimplifier_SimplifierBuilder::Large);
    ModelSimplifier_Simplifier aSimplifier = aBuilder.CreatePipeline();

    ModelData_Model aNewModel = aSimplifier.Perform (aModel);

    // How many shapes does simplified model contain?
    FaceCounter anAfterCounter;
    aNewModel.Accept (anAfterCounter);
    cout << "# of faces after: " << anAfterCounter.NumberOfFaces() << endl;

    // Saving the simplified model
    if (!aNewModel.Save (aDest)) {
        cerr << "Failed to write the file " << aDest << endl;
        return 1;
    }

    return 0;
}