exploring/mesh/Program.cs

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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using cadex;
using cadex.Collections;
using cadex.Geom;
using cadex.ModelData;
using System;
 
namespace mesh
{
    class Program
    {
        static int Main(string[] args)
        {
            string aKey = MTKLicenseKey.Value();
 
            // Activate the license (aKey must be defined in mtk_license.cs)
            if (!LicenseManager.Activate(aKey))
            {
                Console.WriteLine("Failed to activate Manufacturing Toolkit license.");
                return 1;
            }
 
            if (args.Length != 1)
            {
                Console.WriteLine("Usage: " +
                    $"{System.Reflection.Assembly.GetExecutingAssembly().Location} <input_file>, where:");
                Console.WriteLine($"    <input_file> is a name of the file to be read");
                Console.WriteLine($"");
                return 1;
            }
 
            string aSource = args[0];
 
            var aModel = new Model();
            var aReader = new ModelReader();
 
            if (!aReader.Read(new UTF16String(aSource), aModel))
            {
                Console.WriteLine("Failed to read the file " + aSource);
                return 1;
            }
 
            PartMeshVisitor aVisitor = new PartMeshVisitor();
            aModel.Accept(aVisitor);
 
            return 0;
        }
 
        class PartMeshVisitor : ModelElementVoidVisitor
        {
            public override void Apply(Part thePart)
            {
                Console.WriteLine($"Part = \"{thePart.Name()}\"");
                var aBodies = thePart.Bodies();
                if (!aBodies.IsEmpty)
                {
                    ExploreMeshBodies(aBodies);
                }
            }
 
            private void ExploreMeshBodies(BodyList theBodies)
            {
                for (int i = 0; i < theBodies.Count; ++i)
                {
                    var aBody = theBodies[i];
                    if (MeshBody.CompareType(aBody))
                    {
                        var aMeshBody = MeshBody.Cast(aBody);
                        Console.WriteLine($"MeshBody {i}");
                        var aMeshShapes = aMeshBody.Shapes();
                        for (int j = 0; j < aMeshShapes.Count; ++j)
                        {
                            var aMeshShape = aMeshShapes[j];
                            Console.Write($"MeshShape {j}");
                            PrintMeshShapeInfo(aMeshShape);
                        }
                    }
                }
            }
 
            private void PrintMeshShapeInfo(MeshShape theMeshShape)
            {
                if (IndexedTriangleSet.CompareType(theMeshShape))
                {
                    var aITS = IndexedTriangleSet.Cast(theMeshShape);
                    Console.WriteLine(" IndexedTriangleSet type.");
                    DumpTriangleSet(aITS);
                }
                else if (PolylineSet.CompareType(theMeshShape))
                {
                    var aPLS = PolylineSet.Cast(theMeshShape);
                    Console.WriteLine(" PolyLineSet type");
                    DumpPolylineSet(aPLS);
                }
                else if (Polyline2dSet.CompareType(theMeshShape))
                {
                    var aPL2dS = Polyline2dSet.Cast(theMeshShape);
                    Console.WriteLine(" PolyLine2dSet type");
                    DumpPolyline2dSet(aPL2dS);
                }
                else if (PointSet.CompareType(theMeshShape))
                {
                    var aPPS = PointSet.Cast(theMeshShape);
                    Console.WriteLine(" PolyPointSet type");
                    DumpPointSet(aPPS);
                }
                else
                {
                    Console.WriteLine(" Undefined type");
                }
            }
 
            private void DumpPointSet(PointSet thePS)
            {
                uint aNumberOfPoints = thePS.NumberOfPoints();
                Console.WriteLine($"PointSet: {aNumberOfPoints} points");
                for (uint i = 0; i < aNumberOfPoints; ++i)
                {
                    var aP = thePS.Point(i);
                    Console.WriteLine($"Point {i}: ({aP.X()}, {aP.Y()}, {aP.Z()})");
                }
            }
 
            private void DumpPolylineSet(PolylineSet thePLS)
            {
                uint aNumberOfPolylines = thePLS.NumberOfPolylines();
                Console.WriteLine($"PolylineSet: {aNumberOfPolylines} polylines");
                for (uint i = 0; i < aNumberOfPolylines; ++i)
                {
                    Console.WriteLine($"Polyline {i}:");
                    Console.WriteLine(" Node coordinates:");
                    var aPoly = thePLS.Polyline(i);
                    for (uint j = 0; j < aPoly.NumberOfPoints(); ++j)
                    {
                        var aP = aPoly.Point(j);
                        Console.WriteLine($"({aP.X()}, {aP.Y()}, {aP.Z()})");
                    }
                }
            }
 
            private void DumpPolyline2dSet(Polyline2dSet thePLS)
            {
                uint aNumberOfPolylines2d = thePLS.NumberOfPolylines();
                Console.WriteLine($"Polyline2dSet: {aNumberOfPolylines2d} polylines");
                for (uint i = 0; i < aNumberOfPolylines2d; ++i)
                {
                    Console.WriteLine($"Polyline2d {i}:");
                    Console.WriteLine(" Node coordinates:");
                    var aPoly = thePLS.Polyline(i);
                    for (uint j = 0; j < aPoly.NumberOfPoints(); ++j)
                    {
                        var aP = aPoly.Point(j);
                        Console.WriteLine($"({aP.X()}, {aP.Y()})");
                    }
                }
            }
 
            private void DumpTriangleSet(IndexedTriangleSet theITS)
            {
                int aNumberOfTriangles = (int)theITS.NumberOfTriangles();
                Console.WriteLine($"IndexedTriangleSet: {aNumberOfTriangles} triangles:");
                for (uint i = 0; i < aNumberOfTriangles; ++i)
                {
                    Console.WriteLine($"Triangle {i}:");
                    for (uint j = 0; j < 3; ++j)
                    {
                        int aVI = theITS.TriangleVertexIndex(i, j);
                        var aV = theITS.TriangleVertex(i, j);
                        Console.WriteLine($" Node {j}: Vertex {aVI} ({aV.X()}, {aV.Y()}, {aV.Z()})");
                        if (theITS.HasNormals())
                        {
                            var aN = theITS.TriangleVertexNormal(i, j);
                            Console.WriteLine($"  Normal: ({aN.X()}, {aN.Y()}, {aN.Z()})");
                        }
                    }
                }
            }
        }
    }
}