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/************************************************************************
*
* Copyright (C) 2018-2024 IRCAD France
* Copyright (C) 2018-2019 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 <core/com/signal.hpp>
#include <core/com/slots.hpp>
#include <data/image.hpp>
#include <service/filter.hpp>
namespace sight::module::filter::image
{
/**
* @brief Service flipping an input image along x or y or z axis.
*
* @section Slots Slots
* - flip_axis_x(): flip along X axis
* - flip_axis_y(): flip along Y axis
* - flip_axis_z(): flip along Z axis
* @section XML XML Configuration
*
* @code{.xml}
<service type="sight::module::filter::image::flip">
<in key="source" uid="..." auto_connect="true" />
<out key="target" uid="..." />
</service>
@endcode
* @subsection Input Input
* - \b source [sight::data::image]: image to flip.
* @subsection Output Output:
* - \b target [sight::data::image]: New flipped image.
*/
class flip : public service::filter
{
public:
SIGHT_DECLARE_SERVICE(flip, sight::service::filter);
static const core::com::slots::key_t FLIP_AXIS_X_SLOT;
static const core::com::slots::key_t FLIP_AXIS_Y_SLOT;
static const core::com::slots::key_t FLIP_AXIS_Z_SLOT;
/// Constructor, does nothing.
flip();
/// Destructor, does nothing.
~flip() override = default;
protected:
/// Configures the service.
void configuring() override;
/// Does nothing.
void starting() override;
/// Does nothing.
void stopping() override;
/// Apply the flip operator.
void updating() override;
/**
* @brief Signal-slot auto-connection proposals
*
* Connect image::MODIFIED_SIG to this::service::slots::UPDATE
* Connect image::BUFFER_MODIFIED_SIG to this::service::slots::UPDATE
*/
connections_t auto_connections() const override;
private:
/// Slot: flip the first axis
void flip_axis_x();
/// Slot: flip the second axis
void flip_axis_y();
/// Slot: flip the third axis
void flip_axis_z();
// Store whether to flip or not one of the 3 axis
std::array<bool, 3> m_flip_axes {{false, false, false}};
static constexpr std::string_view IMAGE_IN = "source";
static constexpr std::string_view IMAGE_OUT = "target";
sight::data::ptr<sight::data::image, sight::data::access::in> m_source {this, IMAGE_IN};
sight::data::ptr<sight::data::image, sight::data::access::out> m_target {this, IMAGE_OUT};
};
} // namespace sight::module::filter::image
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