| /**************************************************************************** |
| ** |
| ** Copyright (C) 2017 Klaralvdalens Datakonsult AB (KDAB). |
| ** Contact: https://www.qt.io/licensing/ |
| ** |
| ** This file is part of the Qt3D module of the Qt Toolkit. |
| ** |
| ** $QT_BEGIN_LICENSE:LGPL$ |
| ** Commercial License Usage |
| ** Licensees holding valid commercial Qt licenses may use this file in |
| ** accordance with the commercial license agreement provided with the |
| ** Software or, alternatively, in accordance with the terms contained in |
| ** a written agreement between you and The Qt Company. For licensing terms |
| ** and conditions see https://www.qt.io/terms-conditions. For further |
| ** information use the contact form at https://www.qt.io/contact-us. |
| ** |
| ** GNU Lesser General Public License Usage |
| ** Alternatively, this file may be used under the terms of the GNU Lesser |
| ** General Public License version 3 as published by the Free Software |
| ** Foundation and appearing in the file LICENSE.LGPL3 included in the |
| ** packaging of this file. Please review the following information to |
| ** ensure the GNU Lesser General Public License version 3 requirements |
| ** will be met: https://www.gnu.org/licenses/lgpl-3.0.html. |
| ** |
| ** GNU General Public License Usage |
| ** Alternatively, this file may be used under the terms of the GNU |
| ** General Public License version 2.0 or (at your option) the GNU General |
| ** Public license version 3 or any later version approved by the KDE Free |
| ** Qt Foundation. The licenses are as published by the Free Software |
| ** Foundation and appearing in the file LICENSE.GPL2 and LICENSE.GPL3 |
| ** included in the packaging of this file. Please review the following |
| ** information to ensure the GNU General Public License requirements will |
| ** be met: https://www.gnu.org/licenses/gpl-2.0.html and |
| ** https://www.gnu.org/licenses/gpl-3.0.html. |
| ** |
| ** $QT_END_LICENSE$ |
| ** |
| ****************************************************************************/ |
| |
| #include "qlevelofdetailswitch.h" |
| #include "qlevelofdetailswitch_p.h" |
| #include "qlevelofdetail_p.h" |
| #include "qglobal.h" |
| #include <Qt3DCore/QEntity> |
| |
| QT_BEGIN_NAMESPACE |
| |
| namespace Qt3DRender { |
| |
| QLevelOfDetailSwitchPrivate::QLevelOfDetailSwitchPrivate() |
| : QLevelOfDetailPrivate() |
| { |
| |
| } |
| |
| void QLevelOfDetailSwitchPrivate::setCurrentIndex(int currentIndex) |
| { |
| Q_Q(QLevelOfDetailSwitch); |
| |
| bool changed = m_currentIndex != currentIndex; |
| QLevelOfDetailPrivate::setCurrentIndex(currentIndex); |
| |
| if (!changed) |
| return; |
| |
| int entityIndex = 0; |
| const auto entities = q->entities(); |
| for (Qt3DCore::QEntity *entity : entities) { |
| const auto childNodes = entity->childNodes(); |
| for (Qt3DCore::QNode *childNode : childNodes) { |
| Qt3DCore::QEntity *childEntity = qobject_cast<Qt3DCore::QEntity *>(childNode); |
| if (childEntity) { |
| childEntity->setEnabled(entityIndex == currentIndex); |
| entityIndex++; |
| } |
| } |
| |
| break; // only work on the first entity, LOD should not be shared |
| } |
| } |
| |
| /*! |
| \class Qt3DRender::QLevelOfDetailSwitch |
| \inmodule Qt3DRender |
| \inherits Qt3DRender::QLevelOfDetail |
| \since 5.9 |
| \brief Provides a way of enabling child entities based on distance or screen size. |
| |
| This component is assigned to an entity. When the entity changes distance relative |
| to the camera, the QLevelOfDetailSwitch will disable all the child entities except |
| the one matching index Qt3DRender::QLevelOfDetailSwitch::currentIndex. |
| */ |
| |
| /*! |
| \qmltype LevelOfDetailSwitch |
| \instantiates Qt3DRender::QLevelOfDetailSwitch |
| \inherits Component3D |
| \inqmlmodule Qt3D.Render |
| \since 5.9 |
| \brief Provides a way of enabling child entities based on distance or screen size. |
| |
| This component is assigned to an entity. When the entity changes distance relative |
| to the camera, the LevelOfDetailSwitch will disable all the child entities except |
| the one matching index \l currentIndex. |
| |
| \sa LevelOfDetail |
| */ |
| |
| /*! |
| \qmlproperty int LevelOfDetailSwitch::currentIndex |
| |
| The index of the presently selected child entity. |
| */ |
| |
| /*! \fn Qt3DRender::QLevelOfDetailSwitch::QLevelOfDetailSwitch(Qt3DCore::QNode *parent) |
| Constructs a new QLevelOfDetailSwitch with the specified \a parent. |
| */ |
| QLevelOfDetailSwitch::QLevelOfDetailSwitch(QNode *parent) |
| : QLevelOfDetail(*new QLevelOfDetailSwitchPrivate(), parent) |
| { |
| Q_D(QLevelOfDetailSwitch); |
| d->m_currentIndex = -1; |
| } |
| |
| /*! \internal */ |
| QLevelOfDetailSwitch::~QLevelOfDetailSwitch() |
| { |
| } |
| |
| /*! \internal */ |
| QLevelOfDetailSwitch::QLevelOfDetailSwitch(QLevelOfDetailPrivate &dd, QNode *parent) |
| : QLevelOfDetail(dd, parent) |
| { |
| } |
| |
| // TODO Unused remove in Qt6 |
| void QLevelOfDetailSwitch::sceneChangeEvent(const Qt3DCore::QSceneChangePtr &) |
| { |
| } |
| |
| } // namespace Qt3DRender |
| |
| QT_END_NAMESPACE |