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// Copyright (c) 2018
// GeometryFactory (France) All rights reserved.
//
// This file is part of CGAL (www.cgal.org)
//
// $URL: https://github.com/CGAL/cgal/blob/v6.1/Stream_support/include/CGAL/IO/VTK/VTK_reader.h $
// $Id: include/CGAL/IO/VTK/VTK_reader.h b26b07a1242 $
// SPDX-License-Identifier: LGPL-3.0-or-later OR LicenseRef-Commercial
//
//
// Author(s) : Stephane Tayeb
#ifndef CGAL_IO_VTK_READER_H
#define CGAL_IO_VTK_READER_H
#ifdef CGAL_USE_VTK
#include <vtkSmartPointer.h>
#include <vtkCommand.h>
#include <string>
namespace CGAL {
namespace IO {
namespace internal {
class ErrorObserverVtk
: public vtkCommand
{
public:
ErrorObserverVtk()
: Error(false), Warning(false), ErrorMessage(""), WarningMessage("")
{ }
static ErrorObserverVtk *New() { return new ErrorObserverVtk; }
bool GetError() const { return this->Error; }
bool GetWarning() const { return this->Warning; }
std::string GetErrorMessage() { return ErrorMessage; }
std::string GetWarningMessage() { return WarningMessage; }
void Clear()
{
this->Error = false;
this->Warning = false;
this->ErrorMessage = "";
this->WarningMessage = "";
}
virtual void Execute(vtkObject *vtkNotUsed(caller),
unsigned long event,
void *calldata)
{
switch (event)
{
case vtkCommand::ErrorEvent:
ErrorMessage = static_cast<char *>(calldata);
this->Error = true;
break;
case vtkCommand::WarningEvent:
WarningMessage = static_cast<char *>(calldata);
this->Warning = true;
break;
}
}
private:
bool Error;
bool Warning;
std::string ErrorMessage;
std::string WarningMessage;
};
template <class vtkReader>
vtkSmartPointer<vtkReader> read_vtk_file(const std::string& fname,
vtkSmartPointer<ErrorObserverVtk> errorObserver)
{
vtkSmartPointer<vtkReader> reader = vtkSmartPointer<vtkReader>::New();
reader->AddObserver(vtkCommand::ErrorEvent, errorObserver);
reader->AddObserver(vtkCommand::WarningEvent, errorObserver);
reader->SetFileName(fname.data());
reader->Update();
return reader;
}
} // namespace internal
} // namespace IO
} // namespace CGAL
#endif // CGAL_USE_VTK
#endif // CGAL_IO_VTK_READER_H
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