exploring/mesh/main.cxx

Refer to the mtk_mesh_representation_example_page.

// ****************************************************************************
// $Id$
//
// 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.
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// ****************************************************************************
 
 
#include <cadex/LicenseManager_Activate.h>
#include <cadex/ModelAlgo/MeshGenerator.hxx>
#include <cadex/ModelData/IndexedTriangleSet.hxx>
#include <cadex/ModelData/MeshBody.hxx>
#include <cadex/ModelData/Model.hxx>
#include <cadex/ModelData/ModelReader.hxx>
#include <cadex/ModelData/ModelReaderParameters.hxx>
#include <cadex/ModelData/Part.hxx>
#include <cadex/ModelData/PointSet.hxx>
#include <cadex/ModelData/Polyline2dSet.hxx>
#include <cadex/ModelData/PolylineSet.hxx>
#include <cadex/ModelData/ShapeIterator.hxx>
#include <cadex/ModelData/ModelElementIterator.hxx>
 
#include <iostream>
 
#include "../../mtk_license.cxx"
 
 
using namespace std;
using namespace cadex;
 
static void DumpPointSet (const ModelData::PointSet& thePS)
{
    const auto& aNumberOfPoints = thePS.NumberOfPoints();
 
    cout << "PointSet: " << aNumberOfPoints << " points" << endl;
    for (size_t i = 0; i < aNumberOfPoints; ++i) {
        cout << "Point " << i << ":";
        const auto& aP = thePS.Point (i);
        cout << "(" << aP.X() << ", " << aP.Y() << ", " << aP.Z() << ")" << endl;
    }
}
 
static void DumpPolylineSet (const ModelData::PolylineSet& thePLS)
{
    const auto& aNumberOfPolylines = thePLS.NumberOfPolylines();
 
    cout << "PolyineSet: " << aNumberOfPolylines << " polylines" << endl;
    for (size_t i = 0; i < aNumberOfPolylines; ++i) {
        cout << "Polyline " << i << ":" << endl;
        cout << "    Node coordinates:" << endl;
        for (size_t j = 0; j < thePLS.Polyline (i).NumberOfPoints(); ++j) {
            const auto& aP = thePLS.Polyline (i).Point (j);
            cout << "(" << aP.X() << ", " << aP.Y() << ", " << aP.Z() << ")" << endl;
        }
    }
}
 
static void DumpPolyline2dSet (const ModelData::Polyline2dSet& thePLS)
{
    const auto& aNumberOfPolylines2d = thePLS.NumberOfPolylines();
 
    cout << "Polyine2dSet: " << aNumberOfPolylines2d << " polylines" << endl;
    for (size_t i = 0; i < aNumberOfPolylines2d; ++i) {
        cout << "Polyline2d " << i << ":" << endl;
        cout << "    Node coordinates:" << endl;
        for (size_t j = 0; j < thePLS.Polyline (i).NumberOfPoints(); ++j) {
            const auto& aP = thePLS.Polyline (i).Point (j);
            cout << "(" << aP.X() << ", " << aP.Y() << ")" << endl;
        }
    }
}
 
static void DumpTriangleSet (const ModelData::IndexedTriangleSet& theITS)
{
    const auto& aNumberOfTriangles = theITS.NumberOfTriangles();
 
    cout << "IndexedTriangleSet: " << aNumberOfTriangles << " triangles:" << endl;
    for (size_t i = 0; i < aNumberOfTriangles; ++i) {
        cout << "Triangle " << i << ":" << endl;
 
        for (size_t j = 0; j < 3; ++j) {
            cout << "    Node " << j << ": ";
            // Coordinates
            const auto& aVI = theITS.TriangleVertexIndex (i, j);
            const auto& aV = theITS.TriangleVertex (i, j);
            cout << "Vertex " << aVI << " (" << aV.X() << ", " << aV.Y() << ", " << aV.Z() << ")" << endl;
 
            // Normals
            if (theITS.HasNormals()) {
                const auto& aN = theITS.TriangleVertexNormal (i, j);
                cout << "Normal: (" << aN.X() << ", " << aN.Y() << ", " << aN.Z() << ")" << endl;
            }
        }
    }
}
 
static void PrintMeshShapeInfo (const ModelData::MeshShape& theMeshShape)
{
    if (ModelData::IndexedTriangleSet::CompareType (theMeshShape)) {
        cout << " IndexedTriangleSet type." << endl;
        const auto& anITS = static_cast<const ModelData::IndexedTriangleSet&> (theMeshShape);
        DumpTriangleSet (anITS);
    } else if (ModelData::PolylineSet::CompareType (theMeshShape)) {
        cout << " PolyLineSet type" << endl;
        const auto& aPLS = static_cast<const ModelData::PolylineSet&> (theMeshShape);
        DumpPolylineSet (aPLS);
    } else if (ModelData::Polyline2dSet::CompareType (theMeshShape)) {
        cout << " PolyLine2dSet type" << endl;
        const auto& aPL2dS = static_cast<const ModelData::Polyline2dSet&> (theMeshShape);
        DumpPolyline2dSet (aPL2dS);
    } else if (ModelData::PointSet::CompareType (theMeshShape)) {
        cout << " PolyPointSet type" << endl;
        const auto& aPPS = static_cast<const ModelData::PointSet&> (theMeshShape);
        DumpPointSet (aPPS);
    } else {
        cout << " Undefined type" << endl;
    }
}
 
static void ExploreMeshBodies (const std::vector<ModelData::Body>& theBodies)
{
    for (size_t i = 0; i < theBodies.size(); ++i) {
        const auto& aBody = theBodies[i];
 
        if (ModelData::MeshBody::CompareType (aBody)) {
            const auto& aMeshBody = static_cast<const ModelData::MeshBody&> (theBodies[i]);
            cout << "MeshBody " << i << endl;
            const auto& aMeshShapes = aMeshBody.Shapes();
 
            // Iterate over MeshShape vector
            for (size_t j = 0; j < aMeshShapes.size(); j++) {
                const auto& aMeshShape = aMeshShapes[j];
                cout << "MeshShape " << j;
                PrintMeshShapeInfo (aMeshShape);
            }
        }
    }
}
 
class PartMeshVisitor : public ModelData::ModelElementVoidVisitor
{
protected:
    void operator() (const ModelData::Part& thePart) override
    {
        cout << "Part = \"" << thePart.Name() << "\"" << endl;
        const auto& aBodies = thePart.Bodies();
        if (!aBodies.empty()) {
            ExploreMeshBodies (aBodies);
        }
    }
};
 
int main (int argc, char* argv[])
{
    auto aKey = MTKLicenseKey::Value();
 
    // Activate the license (aKey must be defined in mtk_license.cxx)
    if (!CADExLicense_Activate (aKey)) {
        cerr << "Failed to activate Manufacturing Toolkit license." << endl;
        return 1;
    }
 
    // Get the input
    if (argc != 2) {
        cerr << "Usage: " << argv[0] << " <input_file>, where:" << endl;
        cerr << "    <input_file> is a name of the file to be read" << endl;
        return 1;
    }
 
    const char* aSource = argv[1];
 
    // Open the model
    ModelData::Model aModel;
    ModelData::ModelReader aReader;
 
    ModelData::ModelReaderParameters aParam;
 
    if (!aReader.Read (aSource, aModel)) {
        cerr << "Failed to read the file " << aSource << endl;
        return 1;
    }
 
    // Explore mesh bodies of model parts
    PartMeshVisitor aVisitor;
    aModel.Accept (aVisitor);
 
    return 0;
}