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/************************************************************************
*
* Copyright (C) 2009-2024 IRCAD France
* Copyright (C) 2012-2020 IHU Strasbourg
*
* This file is part of Sight.
*
* Sight is free software: you can redistribute it and/or modify it under
* the terms of the GNU Lesser General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* Sight is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with Sight. If not, see <https://www.gnu.org/licenses/>.
*
***********************************************************************/
#include "io/vtk/vti_image_reader.hpp"
#include "io/vtk/helper/vtk_lambda_command.hpp"
#include "io/vtk/vtk.hpp"
#include <core/base.hpp>
#include <core/jobs/base.hpp>
#include <core/jobs/observer.hpp>
#include <vtkGenericDataObjectReader.h>
#include <vtkImageData.h>
#include <vtkSmartPointer.h>
#include <vtkXMLImageDataReader.h>
namespace sight::io::vtk
{
//------------------------------------------------------------------------------
vti_image_reader::vti_image_reader() :
m_job(std::make_shared<core::jobs::observer>("Vti image reader"))
{
}
//------------------------------------------------------------------------------
vti_image_reader::~vti_image_reader()
= default;
//------------------------------------------------------------------------------
void vti_image_reader::read()
{
assert(!m_object.expired());
assert(m_object.lock());
data::image::sptr p_image = get_concrete_object();
vtkSmartPointer<vtkXMLImageDataReader> reader = vtkSmartPointer<vtkXMLImageDataReader>::New();
reader->SetFileName(this->get_file().string().c_str());
using helper::vtk_lambda_command;
vtkSmartPointer<vtk_lambda_command> progress_callback;
progress_callback = vtkSmartPointer<vtk_lambda_command>::New();
progress_callback->set_callback(
[&](vtkObject* _caller, std::uint64_t, void*)
{
auto* filter = static_cast<vtkGenericDataObjectReader*>(_caller);
m_job->done_work(static_cast<std::uint64_t>(filter->GetProgress() * 100.));
});
reader->AddObserver(vtkCommand::ProgressEvent, progress_callback);
m_job->add_simple_cancel_hook([&]{reader->AbortExecuteOn();});
reader->Update();
reader->UpdateInformation();
reader->PropagateUpdateExtent();
vtkDataObject* obj = reader->GetOutput();
vtkImageData* img = vtkImageData::SafeDownCast(obj);
m_job->finish();
SIGHT_THROW_IF("VtiImageReader cannot read Vti image file :" << this->get_file().string(), !img);
try
{
io::vtk::from_vtk_image(img, p_image);
}
catch(std::exception& e)
{
SIGHT_THROW("VTIImage to data::image failed " << e.what());
}
}
//------------------------------------------------------------------------------
std::string vti_image_reader::extension() const
{
return ".vti";
}
//------------------------------------------------------------------------------
core::jobs::base::sptr vti_image_reader::get_job() const
{
return m_job;
}
//------------------------------------------------------------------------------
} // namespace sight::io::vtk
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