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/************************************************************************
*
* Copyright (C) 2009-2024 IRCAD France
* Copyright (C) 2012-2017 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/>.
*
***********************************************************************/
#pragma once
#include <sight/io/vtk/config.hpp>
#include <data/transfer_function.hpp>
#include <vtkLogLookupTable.h>
#include <vtkSmartPointer.h>
namespace sight::io::vtk::helper
{
/**
* @brief Helper to manage vtk data from data::transfer_function.
*/
class SIGHT_IO_VTK_CLASS_API transfer_function
{
public:
/*!
* @brief Convert a data::transfer_function to a vtkLookupTable.
*
* @param[in] _tf data::transfer_function
* @param[in] _allow_transparency Enable conversion of data::transfer_function alpha channel
* @param[in] _size lookup table size
* @param[out] _lt vtkLookupTable
*/
SIGHT_IO_VTK_API static void to_vtk_lookup_table(
data::transfer_function::csptr _tf,
vtkSmartPointer<vtkLookupTable> _lt,
bool _allow_transparency = false,
unsigned int _size = 256
);
/*!
* @brief Convert the range of an image or a transfer_function to a black and white vtkLookupTable.
*
* @param[in] _range_min
* @param[in] _range_max
* @param[in] _size lookup table size
* @param[out] _lt vtkLookupTable
*
*/
SIGHT_IO_VTK_API static void to_bw_vtk_lookup_table(
double _range_min,
double _range_max,
vtkSmartPointer<vtkLookupTable> _lt,
unsigned int _size = 256
);
};
} // namespace sight::io::vtk::helper
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