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/************************************************************************
*
* Copyright (C) 2014-2025 IRCAD France
* Copyright (C) 2014-2020 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 "viz/scene3d/interactor/mesh_picker_interactor.hpp"
#include <core/com/signal.hxx>
#include <viz/scene3d/interactor/base.hpp>
#include <viz/scene3d/layer.hpp>
#include <viz/scene3d/registry/macros.hpp>
namespace sight::viz::scene3d::interactor
{
mesh_picker_interactor::mesh_picker_interactor(layer::sptr _layer, bool _layer_order_dependant) noexcept :
base(_layer, _layer_order_dependant)
{
}
//------------------------------------------------------------------------------
mesh_picker_interactor::~mesh_picker_interactor() noexcept =
default;
//------------------------------------------------------------------------------
void mesh_picker_interactor::set_point_clicked_sig(const point_clicked_sig_t::sptr& _sig)
{
m_point_clicked_sig = _sig;
}
//------------------------------------------------------------------------------
void mesh_picker_interactor::set_query_mask(std::uint32_t _query_mask)
{
m_query_mask = _query_mask;
}
//------------------------------------------------------------------------------
void mesh_picker_interactor::pick(mouse_button _button, modifier _mod, int _x, int _y, bool _pressed)
{
if(auto layer = m_layer.lock())
{
if(!is_in_layer(_x, _y, layer, m_layer_order_dependant))
{
return;
}
if(auto result = viz::scene3d::utils::pick_object(_x, _y, m_query_mask, *layer->get_scene_manager());
result != std::nullopt)
{
Ogre::Vector3 click = result->second;
data::tools::picking_info info;
const Ogre::Camera* const cam = layer->get_default_camera();
const auto* const vp = cam->getViewport();
info.m_pixel_pos[0] = static_cast<double>(_x);
info.m_pixel_pos[1] = static_cast<double>(_y);
info.m_world_pos[0] = static_cast<double>(click.x);
info.m_world_pos[1] = static_cast<double>(click.y);
info.m_world_pos[2] = static_cast<double>(click.z);
info.m_viewport_size[0] = static_cast<double>(vp->getActualWidth());
info.m_viewport_size[1] = static_cast<double>(vp->getActualHeight());
using picking_event_t = data::tools::picking_info::event;
switch(_button)
{
case mouse_button::left:
info.m_event_id = _pressed ? picking_event_t::mouse_left_down : picking_event_t::mouse_left_up;
break;
case mouse_button::right:
info.m_event_id = _pressed ? picking_event_t::mouse_right_down : picking_event_t::mouse_right_up;
break;
case mouse_button::middle:
info.m_event_id = _pressed ? picking_event_t::mouse_middle_down : picking_event_t::mouse_middle_up;
break;
default:
SIGHT_ERROR("Unknow button");
break;
}
if(static_cast<bool>(_mod & modifier::control))
{
info.m_modifier_mask |= data::tools::picking_info::ctrl;
}
if(static_cast<bool>(_mod & modifier::shift))
{
info.m_modifier_mask |= data::tools::picking_info::shift;
}
if(m_point_clicked_sig)
{
m_point_clicked_sig->async_emit(info);
}
else
{
SIGHT_ERROR(
"You must first set the signal sent using 'mesh_picker_interactor::setPointClickedSig'"
" for this interactor to work."
);
}
}
}
}
//------------------------------------------------------------------------------
void mesh_picker_interactor::button_press_event(mouse_button _button, modifier _mod, int _x, int _y)
{
m_pressed[_button] = true;
this->pick(_button, _mod, _x, _y, true);
}
//------------------------------------------------------------------------------
void mesh_picker_interactor::button_release_event(mouse_button _button, modifier _mod, int _x, int _y)
{
m_pressed[_button] = false;
this->pick(_button, _mod, _x, _y, false);
}
//------------------------------------------------------------------------------
void mesh_picker_interactor::mouse_move_event(
mouse_button _button,
modifier _mod,
int _x,
int _y,
int /*_dx*/,
int /*_dy*/
)
{
if(m_pressed[_button])
{
this->pick(_button, _mod, _x, _y, true);
}
}
//------------------------------------------------------------------------------
} //namespace sight::viz::scene3d::interactor.
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