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Diffstat (limited to 'src/animation/backend/animationcliploader.cpp')
-rw-r--r-- | src/animation/backend/animationcliploader.cpp | 218 |
1 files changed, 218 insertions, 0 deletions
diff --git a/src/animation/backend/animationcliploader.cpp b/src/animation/backend/animationcliploader.cpp new file mode 100644 index 000000000..96323885c --- /dev/null +++ b/src/animation/backend/animationcliploader.cpp @@ -0,0 +1,218 @@ +/**************************************************************************** +** +** 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 |