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/************************************************************************
*
* Copyright (C) 2022-2025 IRCAD France
*
* 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/picking_cross.hpp"
#include <viz/scene3d/helper/manual_object.hpp>
#include <viz/scene3d/ogre.hpp>
#include <viz/scene3d/utils.hpp>
#include <OGRE/OgreMaterialManager.h>
#include <OGRE/OgreSceneManager.h>
#include <OGRE/OgreSceneNode.h>
namespace sight::viz::scene3d
{
//------------------------------------------------------------------------------
picking_cross::picking_cross(const std::string& _name, Ogre::SceneManager& _scene_manager, Ogre::SceneNode& _parent) :
m_scene_manager(_scene_manager)
{
m_cross = _scene_manager.createManualObject(_name + +"_picking_cross");
const auto basic_ambient_mat = Ogre::MaterialManager::getSingleton().getByName(
"BasicAmbient",
sight::viz::scene3d::RESOURCE_GROUP
);
m_cross->setRenderQueueGroup(rq::SURFACE);
auto cross_mat = basic_ambient_mat->clone(_name + "_CrossMaterial");
const Ogre::ColourValue yellow(1.F, .75F, 0.F, 1.F);
cross_mat->setAmbient(yellow);
cross_mat->setDiffuse(yellow);
cross_mat->setDepthCheckEnabled(false);
m_cross->estimateVertexCount(4);
m_cross->begin(cross_mat, Ogre::RenderOperation::OT_LINE_LIST);
for(std::uint8_t i = 0 ; i < 4 ; ++i)
{
m_cross->position(Ogre::Vector3::ZERO);
}
m_cross->end();
m_cross->setVisible(false);
// Always render the widget after the plane it is displayed on.
m_cross->setRenderQueueGroupAndPriority(rq::NEGATO_WIDGET, 1);
_parent.attachObject(m_cross);
}
//------------------------------------------------------------------------------
picking_cross::~picking_cross()
{
auto cross_mtl = m_cross->getSections()[0]->getMaterial();
Ogre::MaterialManager::getSingleton().remove(cross_mtl);
m_scene_manager.destroyManualObject(m_cross);
}
//------------------------------------------------------------------------------
void picking_cross::update(
const Ogre::Vector3& _a,
const Ogre::Vector3& _b,
const Ogre::Vector3& _c,
const Ogre::Vector3& _d
)
{
using sight::viz::scene3d::helper::manual_object;
const auto dash_length = std::max(_a.distance(_b), _c.distance(_d)) / 400.F;
const auto dash_spacing = std::max(_a.distance(_b), _c.distance(_d)) / 200.F;
m_cross->beginUpdate(0);
manual_object::draw_dashed_line(
m_cross,
_a,
_b,
dash_length,
dash_spacing
);
manual_object::draw_dashed_line(
m_cross,
_c,
_d,
dash_length,
dash_spacing
);
m_cross->end();
m_cross->setVisible(true);
}
} // namespace sight::viz::scene3d
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