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/************************************************************************
*
* Copyright (C) 2017-2025 IRCAD France
* Copyright (C) 2017-2019 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 <data/image.hpp>
#include <data/matrix4.hpp>
#include <data/string.hpp>
#include <service/filter.hpp>
namespace sight::module::filter::image
{
/**
* @brief Service applying a transform to an image and outputing the resampled image.
*
* @section Signals Signals
* - \b computed() : Signal sent after resampling.
*
* @section XML XML Configuration
*
* @code{.xml}
<service uid="..." type="sight::module::filter::image::resampler">
<in key="imageIn" uid="..." auto_connect="true" />
<in key="transform" uid="..." />
<in key="target" uid="..." />
<inout key="imageOut" uid="..." />
</service>
@endcode
* @subsection Input Input
* - \b imageIn [sight::data::image]: image to resample.
* - \b transform [sight::data::matrix4]: Transform to apply.
* - \b target [sight::data::image] (optional): target image defining the size, spacing and origin of the output.
* @subsection In-Out In-Out
* - \b imageOut [sight::data::image]: New resampled image.
*/
class resampler final : public service::filter
{
public:
SIGHT_DECLARE_SERVICE(resampler, service::filter);
/// Constructor, does nothing.
resampler();
/// Destructor, does nothing.
~resampler() final = default;
protected:
/// Does nothing.
void configuring() final;
/// Does nothing.
void starting() final;
/// Does nothing.
void stopping() final;
/// Apply the transform and resample.
void updating() final;
/**
* @brief Auto connections
*
* - Update service when the image or its buffer is modified.
* - Update service when the transform matrix is modified.
* - Update service when the target image is modified.
*/
connections_t auto_connections() const final;
private:
static constexpr std::string_view IMAGE_IN = "imageIn";
static constexpr std::string_view IMAGE_INOUT = "imageOut";
static constexpr std::string_view TARGET_IN = "target";
static constexpr std::string_view TRANSFORM_IN = "transform";
sight::data::ptr<sight::data::image, sight::data::access::in> m_image_in {this, IMAGE_IN};
sight::data::ptr<sight::data::image, sight::data::access::inout> m_image_out {this, IMAGE_INOUT};
sight::data::ptr<sight::data::image, sight::data::access::in> m_target_in {this, TARGET_IN, true};
sight::data::ptr<sight::data::matrix4, sight::data::access::in> m_transform_in {this, TRANSFORM_IN};
sight::data::property<sight::data::string> m_interpolation {this, "interpolation", std::string("LINEAR")};
};
} // namespace sight::module::filter::image
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