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/************************************************************************
*
* Copyright (C) 2017-2024 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 <service/filter.hpp>
namespace sight::module::filter::image
{
/**
* @brief Service computing the center of a 3D image, it outputs the translation going from origin to the center.
*
* @section Signals Signals
* - \b computed() : Signal sent after computing center.
*
* @section XML XML Configuration
* @code{.xml}
<service type="sight::module::filter::image::image_center">
<in key="image" uid="..." />
<inout key="transform" uid="..." />
</service>
@endcode
*
* @subsection Input Input
* - \b image [sight::data::image]: Input image on which the center will be computed.
*
* @subsection In-Out In-Out
* - \b transform [sight::data::matrix4]: Will be first reset to identity and then will contain
* translation
* from world origin(0,0,0) to the image center (in mm).
*
*/
class image_center : public service::filter
{
public:
SIGHT_DECLARE_SERVICE(image_center, service::filter);
/// Constructor, does nothing.
image_center();
/// Destructor, does nothing.
~image_center() override = default;
protected:
/// Configure registration parameters.
void configuring() override;
/// Does nothing.
void starting() override;
/// Do the registration.
void updating() override;
/// Does nothing.
void stopping() override;
/**
* @brief Auto connections
*
* - Update service when one of the two images is modified.
* - Update service when the transform matrix is modified.
*/
connections_t auto_connections() const override;
private:
static constexpr std::string_view IMAGE_IN = "image";
static constexpr std::string_view TRANSFORM_INOUT = "transform";
sight::data::ptr<sight::data::image, sight::data::access::in> m_image {this, IMAGE_IN};
sight::data::ptr<sight::data::matrix4, sight::data::access::inout> m_transform {this, TRANSFORM_INOUT};
};
} // namespace sight::module::filter::image
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