/****************************************************************************
**
** Copyright (C) 2015 Klaralvdalens Datakonsult AB (KDAB).
** Contact: http://www.qt-project.org/legal
**
** This file is part of the Qt3D module of the Qt Toolkit.
**
** $QT_BEGIN_LICENSE:LGPL3$
** 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
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** information use the contact form at http://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.LGPLv3 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.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 later 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 2.0 requirements will be
** met: http://www.gnu.org/licenses/gpl-2.0.html.
**
** $QT_END_LICENSE$
**
****************************************************************************/

#include "qgeometry.h"

#include <private/qnode_p.h>
#include <Qt3DCore/qabstractattribute.h>
#include <Qt3DCore/qscenepropertychange.h>

QT_BEGIN_NAMESPACE

namespace Qt3D {

class QGeometryPrivate : public QNodePrivate
{
public:
    Q_DECLARE_PUBLIC(QGeometry)
    QGeometryPrivate()
        : QNodePrivate()
        , m_verticesPerPatch(0)
    {}

    QAttributeList m_attributes;
    int m_verticesPerPatch;
};

QGeometry::QGeometry(QNode *parent)
    : QNode(*new QGeometryPrivate(), parent)
{
}

QGeometry::~QGeometry()
{
    QNode::cleanup();
}

void QGeometry::addAttribute(QAbstractAttribute *attribute)
{
    Q_D(QGeometry);
    if (!d->m_attributes.contains(attribute)) {
        d->m_attributes.append(attribute);

        // We need to add it as a child of the current node if it has been declared inline
        // Or not previously added as a child of the current node so that
        // 1) The backend gets notified about it's creation
        // 2) When the current node is destroyed, it gets destroyed as well
        if (!attribute->parent())
            attribute->setParent(this);

        if (d->m_changeArbiter != Q_NULLPTR) {
            QScenePropertyChangePtr change(new QScenePropertyChange(NodeAdded, QSceneChange::Node, id()));
            change->setPropertyName("attribute");
            change->setValue(QVariant::fromValue(attribute->id()));
            d->notifyObservers(change);
        }
    }
}

void QGeometry::removeAttribute(QAbstractAttribute *attribute)
{
    Q_D(QGeometry);
    if (d->m_changeArbiter != Q_NULLPTR) {
        QScenePropertyChangePtr change(new QScenePropertyChange(NodeRemoved, QSceneChange::Node, id()));
        change->setPropertyName("attribute");
        change->setValue(QVariant::fromValue(attribute->id()));
        d->notifyObservers(change);
    }
    d->m_attributes.removeOne(attribute);
}

void QGeometry::setVerticesPerPatch(int verticesPerPatch)
{
    Q_D(QGeometry);
    if (d->m_verticesPerPatch != verticesPerPatch) {
        d->m_verticesPerPatch = verticesPerPatch;
        emit verticesPerPatchChanged();
    }
}

int QGeometry::verticesPerPatch() const
{
    Q_D(const QGeometry);
    return d->m_verticesPerPatch;
}

QAttributeList QGeometry::attributes() const
{
    Q_D(const QGeometry);
    return d->m_attributes;
}

void QGeometry::copy(const QNode *ref)
{
    QNode::copy(ref);
    const QGeometry *geometry = static_cast<const QGeometry *>(ref);
    d_func()->m_verticesPerPatch = geometry->d_func()->m_verticesPerPatch;
    Q_FOREACH (QAbstractAttribute *attribute, geometry->d_func()->m_attributes)
        d_func()->m_attributes.append(qobject_cast<QAbstractAttribute *>(QNode::clone(attribute)));
}

} // Qt3D

QT_END_NAMESPACE
