FreeCAD

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/***************************************************************************
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 *   Copyright (c) 2011 Werner Mayer <wmayer[at]users.sourceforge.net>     *
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 *                                                                         *
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 *   This file is part of the FreeCAD CAx development system.              *
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 *                                                                         *
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 *   This library is free software; you can redistribute it and/or         *
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 *   modify it under the terms of the GNU Library General Public           *
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 *   License as published by the Free Software Foundation; either          *
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 *   version 2 of the License, or (at your option) any later version.      *
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 *                                                                         *
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 *   This library  is distributed in the hope that it will be useful,      *
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 *   but WITHOUT ANY WARRANTY; without even the implied warranty of        *
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 *   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the         *
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 *   GNU Library General Public License for more details.                  *
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 *                                                                         *
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 *   You should have received a copy of the GNU Library General Public     *
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 *   License along with this library; see the file COPYING.LIB. If not,    *
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 *   write to the Free Software Foundation, Inc., 59 Temple Place,         *
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 *   Suite 330, Boston, MA  02111-1307, USA                                *
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 *                                                                         *
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 ***************************************************************************/
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#include "PreCompiled.h"
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#ifndef _PreComp_
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# include <fcntl.h>
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# include <BRep_Builder.hxx>
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# include <IGESBasic_Group.hxx>
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# include <IGESBasic_SingularSubfigure.hxx>
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# include <IGESControl_Controller.hxx>
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# include <IGESControl_Reader.hxx>
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# include <IGESSolid_ManifoldSolid.hxx>
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# include <Message_MsgFile.hxx>
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# include <Standard_Version.hxx>
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# include <TColStd_HSequenceOfTransient.hxx>
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# include <TopoDS.hxx>
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# include <TopoDS_Compound.hxx>
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# include <TopoDS_Shape.hxx>
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# include <Transfer_TransientProcess.hxx>
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# include <XSControl_TransferReader.hxx>
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# include <XSControl_WorkSession.hxx>
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#endif
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#include <App/Document.h>
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#include <Base/Sequencer.h>
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#include "ImportIges.h"
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#include "PartFeature.h"
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#include "ProgressIndicator.h"
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using namespace Part;
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int Part::ImportIgesParts(App::Document *pcDoc, const char* FileName)
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{
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    try {
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        Base::FileInfo fi(FileName);
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        // read iges file
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        IGESControl_Controller::Init();
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        // load data exchange message files
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        Message_MsgFile::LoadFromEnv("CSF_XSMessage","IGES");
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        // load shape healing message files
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        Message_MsgFile::LoadFromEnv("CSF_SHMessageStd","SHAPEStd");
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        IGESControl_Reader aReader;
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        if (aReader.ReadFile((Standard_CString)FileName) != IFSelect_RetDone)
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            throw Base::FileException("Error in reading IGES");
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        // Ignore construction elements
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        // http://www.opencascade.org/org/forum/thread_20603/?forum=3
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        aReader.SetReadVisible(Standard_True);
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        // check file conformity and output stats
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        aReader.PrintCheckLoad(Standard_True,IFSelect_GeneralInfo);
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        std::string aName = fi.fileNamePure();
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#if OCC_VERSION_HEX < 0x070500
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        Handle(Message_ProgressIndicator) pi = new ProgressIndicator(100);
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        pi->NewScope(100, "Reading IGES file...");
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        pi->Show();
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        aReader.WS()->MapReader()->SetProgress(pi);
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#endif
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        // make model
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        aReader.ClearShapes();
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        //Standard_Integer nbRootsForTransfer = aReader.NbRootsForTransfer();
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        aReader.TransferRoots();
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#if OCC_VERSION_HEX < 0x070500
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        pi->EndScope();
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#endif
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        // put all other free-flying shapes into a single compound
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        Standard_Boolean emptyComp = Standard_True;
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        BRep_Builder builder;
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        TopoDS_Compound comp;
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        builder.MakeCompound(comp);
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        Standard_Integer nbShapes = aReader.NbShapes();
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        for (Standard_Integer i=1; i<=nbShapes; i++) {
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            TopoDS_Shape aShape = aReader.Shape(i);
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            if (!aShape.IsNull()) {
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                if (aShape.ShapeType() == TopAbs_SOLID ||
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                    aShape.ShapeType() == TopAbs_COMPOUND ||
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                    aShape.ShapeType() == TopAbs_SHELL) {
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                        App::DocumentObject* obj = pcDoc->addObject("Part::Feature", aName.c_str());
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                        static_cast<Part::Feature*>(obj)->Shape.setValue(aShape);
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                }
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                else {
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                    builder.Add(comp, aShape);
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                    emptyComp = Standard_False;
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                }
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            }
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        }
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        if (!emptyComp) {
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            std::string name = fi.fileNamePure();
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            Part::Feature *pcFeature = static_cast<Part::Feature*>(pcDoc->addObject
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                ("Part::Feature", name.c_str()));
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            pcFeature->Shape.setValue(comp);
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        }
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    }
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    catch (Standard_Failure& e) {
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        throw Base::CADKernelError(e.GetMessageString());
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    }
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    return 0;
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}
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