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/****************************************************************************
**
** Copyright (C) 2014 Klaralvdalens Datakonsult AB (KDAB).
** Contact: http://www.qt-project.org/legal
**
** 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 Digia. For licensing terms and
** conditions see http://qt.digia.com/licensing. For further information
** use the contact form at http://qt.digia.com/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 2.1 as published by the Free Software
** Foundation and appearing in the file LICENSE.LGPL included in the
** packaging of this file. Please review the following information to
** ensure the GNU Lesser General Public License version 2.1 requirements
** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html.
**
** In addition, as a special exception, Digia gives you certain additional
** rights. These rights are described in the Digia Qt LGPL Exception
** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
**
** GNU General Public License Usage
** Alternatively, this file may be used under the terms of the GNU
** General Public License version 3.0 as published by the Free Software
** Foundation and appearing in the file LICENSE.GPL included in the
** packaging of this file. Please review the following information to
** ensure the GNU General Public License version 3.0 requirements will be
** met: http://www.gnu.org/copyleft/gpl.html.
**
**
** $QT_END_LICENSE$
**
****************************************************************************/
#ifndef QT3D_ENTITY_H
#define QT3D_ENTITY_H
#include "node.h"
#include "qt3dcore_global.h"
#include <QMatrix4x4>
namespace Qt3D {
class AbstractTransform;
class Component;
typedef QList<Component*> ComponentList;
class QT3DCORESHARED_EXPORT Entity : public Node
{
Q_OBJECT
Q_PROPERTY(bool enabled READ isEnabled WRITE setEnabled NOTIFY enabledChanged)
Q_PROPERTY(QQmlListProperty<Qt3D::AbstractTransform> transforms READ transformList)
public:
explicit Entity(Node *parent = 0);
ComponentList components() const;
template <class T>
QList<T*> componentsOfType() const
{
QList<T*> result;
foreach (Component* comp, components()) {
T* i = qobject_cast<T*>(comp);
if (i)
result.append(i);
}
return result;
}
template <class T>
static T* findComponentInTree(Node* root)
{
if (!root)
return NULL;
if (root->asEntity()) {
foreach (Component* comp, root->asEntity()->components()) {
T* i = qobject_cast<T*>(comp);
if (i)
return i;
} // of component iteration
} // of is-entity
foreach (Node* child, root->children()) {
T* i = findComponentInTree<T>(child);
if (i)
return i;
} // of child nodes iteration
return NULL;
}
void addComponent(Component *comp);
void removeComponent(Component *comp);
bool isEnabled() const;
void setEnabled(bool on);
QMatrix4x4 matrix() const;
void setMatrix(const QMatrix4x4 &m);
QMatrix4x4 sceneMatrix() const;
QVector3D rotationCenter() const;
void setRotationCenter(const QVector3D &rc);
QList<AbstractTransform*> transforms() const;
// void insertTransformAt(...)
Q_INVOKABLE void appendTransfrom(AbstractTransform *xform);
Q_INVOKABLE void removeTransform(AbstractTransform *xform);
virtual Entity* asEntity();
Entity* parentEntity();
// TEMPORARY - should be driven by an Update traversal in the core
void update();
signals:
void enabledChanged();
private:
QQmlListProperty<Qt3D::AbstractTransform> transformList();
ComponentList m_components;
QMatrix4x4 applyTransforms() const;
mutable bool m_transformsDirty;
bool m_visible;
QList<AbstractTransform*> m_transforms;
mutable QMatrix4x4 m_matrix;
QMatrix4x4 m_sceneMatrix;
// TODO: Is a bool enough here or do we need additional states for entities?
// Perhaps aboutToBeDeleted would be useful?
bool m_enabled;
static void qmlAppendTransform(QQmlListProperty<Qt3D::AbstractTransform> *list, Qt3D::AbstractTransform *bar);
static AbstractTransform* transformAt(QQmlListProperty<Qt3D::AbstractTransform> *list, int index);
static int transformCount(QQmlListProperty<Qt3D::AbstractTransform> *list);
static void qmlClearTransforms(QQmlListProperty<Qt3D::AbstractTransform> *list);
};
} // namespace Qt3D
#endif // QT3D_ENTITY_H
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