exploring/transformations/Program.cs

Refer to the Transformation Example.

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// Copyright (C) 2008-2014, Roman Lygin. All rights reserved.
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using cadex;
using System;
using System.Collections.Generic;
using System.Runtime.InteropServices;
 
namespace transformations
{
    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 2015)
            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 != 1)
            {
                Console.WriteLine("Usage: " + System.Reflection.Assembly.GetExecutingAssembly().Location
                + " <input_file>, where:");
                Console.WriteLine("    <input_file>  is a name of the XML file to be read");
                return 1;
            }
 
            string aSource = args[0];
 
            ModelData_Model aModel = new ModelData_Model();
 
            if (!new ModelData_ModelReader().Read(new Base_UTF16String(aSource), aModel))
            {
                Console.WriteLine("Failed to read the file " + aSource);
                return 1;
            }
 
            // Visitor to check and print transformations of instances
            InstancesTransformationsVisitor aVisitor = new InstancesTransformationsVisitor();
            aModel.Accept(aVisitor);
 
            return 0;
        }
    }
 
    class InstancesTransformationsVisitor : ModelData_Model.VoidElementVisitor
    {
        public InstancesTransformationsVisitor()
        {
            // We are going to multiply each matrix to produce transformations relative to the SceneGraph root
            ModelData_Transformation anIdentity = new ModelData_Transformation();
            myTransformationMatrix.Push(anIdentity);
        }
 
        public override bool VisitEnter(ModelData_Instance theInstance)
        {
            ModelData_Transformation aTrsf = new ModelData_Transformation();
            if (theInstance.HasTransformation())
            {
                aTrsf = theInstance.Transformation();
            }
 
            ModelData_Transformation aCumulativeTrsf = myTransformationMatrix.Peek().Multiplied(aTrsf);
            myTransformationMatrix.Push(aCumulativeTrsf);
            PrintTransformation(theInstance.Name());
            return true;
        }
 
        private void PrintTransformation(Base_UTF16String theName)
        {
            if (theName.IsEmpty())
            {
                theName = new Base_UTF16String("noName");
            }
            Console.WriteLine("Instance " + theName + " has transformations:");
 
            // Current transformations are relative to the SceneGraph root
            double v00 = 0.0, v01 = 0.0, v02 = 0.0, v10 = 0.0, v11 = 0.0, v12 = 0.0, v20 = 0.0, v21 = 0.0, v22 = 0.0;
            myTransformationMatrix.Peek().RotationPart(ref v00, ref v01, ref v02, ref v10, ref v11, ref v12, ref v20, ref v21, ref v22);
            ModelData_Vector aTranslation = myTransformationMatrix.Peek().TranslationPart();
            Console.WriteLine("| " + v00 + " " + v01 + " " + v02 + " " + aTranslation.X() + " |");
            Console.WriteLine("| " + v10 + " " + v11 + " " + v12 + " " + aTranslation.Y() + " |");
            Console.WriteLine("| " + v20 + " " + v21 + " " + v22 + " " + aTranslation.Z() + " |");
        }
 
        public override void VisitLeave(ModelData_Instance theInstance)
        {
            myTransformationMatrix.Pop();
        }
 
        Stack<ModelData_Transformation> myTransformationMatrix = new Stack<ModelData_Transformation>();
    }
}