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/****************************************************************************
**
** Copyright (C) 2017 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
** and conditions see http://www.qt.io/terms-conditions. For further
** 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 "animationcliploader_p.h"
#include <Qt3DAnimation/qanimationcliploader.h>
#include <Qt3DAnimation/private/qanimationcliploader_p.h>
#include <Qt3DAnimation/private/animationlogging_p.h>
#include <Qt3DRender/private/qurlhelper_p.h>
#include <Qt3DCore/qpropertyupdatedchange.h>
#include <QtCore/qbytearray.h>
#include <QtCore/qfile.h>
#include <QtCore/qjsonarray.h>
#include <QtCore/qjsondocument.h>
#include <QtCore/qjsonobject.h>
QT_BEGIN_NAMESPACE
namespace Qt3DAnimation {
namespace Animation {
AnimationClipLoader::AnimationClipLoader()
: BackendNode(ReadWrite)
, m_source()
, m_name()
, m_objectName()
, m_channelGroups()
, m_duration(0.0f)
{
}
void AnimationClipLoader::initializeFromPeer(const Qt3DCore::QNodeCreatedChangeBasePtr &change)
{
const auto typedChange = qSharedPointerCast<Qt3DCore::QNodeCreatedChange<QAnimationClipLoaderData>>(change);
const auto &data = typedChange->data;
m_source = data.source;
if (!m_source.isEmpty())
setDirty(Handler::AnimationClipDirty);
}
void AnimationClipLoader::cleanup()
{
setEnabled(false);
m_handler = nullptr;
m_source.clear();
m_channelGroups.clear();
m_duration = 0.0f;
clearData();
}
void AnimationClipLoader::sceneChangeEvent(const Qt3DCore::QSceneChangePtr &e)
{
switch (e->type()) {
case Qt3DCore::PropertyUpdated: {
const auto change = qSharedPointerCast<Qt3DCore::QPropertyUpdatedChange>(e);
if (change->propertyName() == QByteArrayLiteral("source")) {
m_source = change->value().toUrl();
setDirty(Handler::AnimationClipDirty);
}
break;
}
default:
break;
}
QBackendNode::sceneChangeEvent(e);
}
/*!
\internal
Called by LoadAnimationClipJob on the threadpool
*/
void AnimationClipLoader::loadAnimation()
{
qCDebug(Jobs) << Q_FUNC_INFO << m_source;
clearData();
// TODO: Handle remote files
QString filePath = Qt3DRender::QUrlHelper::urlToLocalFileOrQrc(m_source);
QFile file(filePath);
if (!file.open(QIODevice::ReadOnly)) {
qWarning() << "Could not find animation clip:" << filePath;
return;
}
QByteArray animationData = file.readAll();
QJsonDocument document = QJsonDocument::fromJson(animationData);
QJsonObject rootObject = document.object();
// TODO: Allow loading of a named animation from a file containing many
QJsonArray animationsArray = rootObject[QLatin1String("animations")].toArray();
qCDebug(Jobs) << "Found" << animationsArray.size() << "animations:";
for (int i = 0; i < animationsArray.size(); ++i) {
QJsonObject animation = animationsArray.at(i).toObject();
qCDebug(Jobs) << "\tName:" << animation[QLatin1String("action")].toString()
<< "Object:" << animation[QLatin1String("object")].toString();
}
// For now just load the first animation
QJsonObject animation = animationsArray.at(0).toObject();
m_name = animation[QLatin1String("action")].toString();
m_objectName = animation[QLatin1String("object")].toString();
QJsonArray groupsArray = animation[QLatin1String("groups")].toArray();
const int groupCount = groupsArray.size();
m_channelGroups.resize(groupCount);
for (int i = 0; i < groupCount; ++i) {
const QJsonObject group = groupsArray.at(i).toObject();
m_channelGroups[i].read(group);
}
const float t = findDuration();
setDuration(t);
m_channelCount = findChannelCount();
qCDebug(Jobs) << "Loaded animation data:" << *this;
}
void AnimationClipLoader::setDuration(float duration)
{
if (qFuzzyCompare(duration, m_duration))
return;
m_duration = duration;
// Send a change to the frontend
auto e = Qt3DCore::QPropertyUpdatedChangePtr::create(peerId());
e->setDeliveryFlags(Qt3DCore::QSceneChange::DeliverToAll);
e->setPropertyName("duration");
e->setValue(m_duration);
notifyObservers(e);
}
/*!
\internal
Given the index of a channel group, \a channelGroupIndex, calculates
the base index of the first channel in this group. For example, if
there are two channel groups each with 3 channels and you request
the channelBaseIndex(1), the return value will be 3. Indices 0-2 are
for the first group, so the first channel of the second group occurs
at index 3.
*/
int AnimationClipLoader::channelBaseIndex(int channelGroupIndex) const
{
int index = 0;
for (int i = 0; i < channelGroupIndex; ++i)
index += m_channelGroups[i].channels.size();
return index;
}
void AnimationClipLoader::clearData()
{
m_name.clear();
m_objectName.clear();
m_channelGroups.clear();
}
float AnimationClipLoader::findDuration()
{
// Iterate over the contained fcurves and find the longest one
double tMax = 0.0;
for (const ChannelGroup &channelGroup : qAsConst(m_channelGroups)) {
for (const Channel &channel : qAsConst(channelGroup.channels)) {
const float t = channel.fcurve.endTime();
if (t > tMax)
tMax = t;
}
}
return tMax;
}
int AnimationClipLoader::findChannelCount()
{
int channelCount = 0;
for (const ChannelGroup &channelGroup : qAsConst(m_channelGroups))
channelCount += channelGroup.channels.size();
return channelCount;
}
} // namespace Animation
} // namespace Qt3DAnimation
QT_END_NAMESPACE
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