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/****************************************************************************
**
** Copyright (C) 2018 The Qt Company Ltd.
** Contact: https://www.qt.io/licensing/
**
** This file is part of Qt 3D Studio.
**
** $QT_BEGIN_LICENSE:GPL$
** 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 General Public License Usage
** Alternatively, this file may be used under the terms of the GNU
** General Public License version 3 or (at your option) 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.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-3.0.html.
**
** $QT_END_LICENSE$
**
****************************************************************************/
#include "q3dsanimator_p.h"
#include <q3dsuippresentation_p.h>
#include <q3dslogging_p.h>
#include <q3dsslideplayer_p.h>
QT_BEGIN_NAMESPACE
bool evaluateAnimation(const Q3DSAnimator::AnimationDataList::const_iterator &cbegin,
const Q3DSAnimator::AnimationDataList::const_iterator &cend,
float time,
float *value)
{
Q_ASSERT(value);
const float oldValue = *value;
const int size = int(cend - cbegin) + 1;
if (size < 2) {
if (size == 0)
return false;
*value = cbegin->keyFrameData.value;
} else {
if (time >= cend->keyFrameData.time) {
*value = cend->keyFrameData.value;
} else if (time <= cbegin->keyFrameData.time) {
*value = cbegin->keyFrameData.value;
} else {
const auto foundIt = std::find_if(cbegin, cend, [time](const Q3DSAnimationData &data) { return (data.keyFrameData.time >= time); });
const auto previous = (foundIt != cbegin) ? (foundIt - 1) : foundIt;
Q_ASSERT(foundIt->type == Q3DSAnimationData::DataType::KeyFrame && previous->type == Q3DSAnimationData::DataType::KeyFrame);
*value = Q3DSAnimationUtils::evaluateBezierKeyframe(time, (*previous).keyFrameData, (*foundIt).keyFrameData);
}
}
return !qFuzzyCompare(*value, oldValue);
}
void syncDirtyProperties(const Q3DSAnimator::DirtyPropertyList &dirtyProperties)
{
Q3DSGraphObject *target;
qint8 changeFlags;
qint16 pid;
QVariant::Type type;
for (const auto &dirtyProperty : dirtyProperties) {
target = dirtyProperty.target->target;
Q_ASSERT(target);
pid = dirtyProperty.target->pid;
type = dirtyProperty.target->type;
if (Q_UNLIKELY(pid == -1 || type == QVariant::Invalid)) {
qCWarning(lcAnim, "Property update failed for id %d and with type %d", pid, type);
continue;
}
const auto &vec3 = dirtyProperty.value;
changeFlags = dirtyProperty.target->changeFlags;
static const auto toTargetVariant = [](QVariant::Type type, const QVector3D &v) {
switch (int(type)) {
case QVariant::Double:
Q_FALLTHROUGH();
case QMetaType::Float:
return QVariant::fromValue(v.x());
case QVariant::Vector2D:
return QVariant::fromValue(v.toVector2D());
case QVariant::Vector3D:
return QVariant::fromValue(v);
case QVariant::Color:
{
// stabilize values
const float r = qBound(0.0f, v.x(), 1.0f);
const float g = qBound(0.0f, v.y(), 1.0f);
const float b = qBound(0.0f, v.z(), 1.0f);
return QVariant::fromValue(QColor::fromRgbF(qreal(r), qreal(g), qreal(b)));
}
default:
return QVariant();
}
};
const QVariant &variant = toTargetVariant(type, vec3);
if (Q_UNLIKELY(!variant.isValid())) {
qCWarning(lcAnim, "The unsupported type %d attempted used on %s", type, target->id().constData());
continue;
}
if (Q_UNLIKELY(!Q3DSGraphObject::writeProperty(target, pid, variant))) {
qCWarning(lcAnim, "Failed to write property %d on %s", pid, target->id().constData());
continue;
}
target->notifyPropertyChanges(changeFlags, QSet<QString>());
}
}
void evaluateNodesAt(Q3DSAnimator::AnimationDataList::const_iterator cit,
const Q3DSAnimator::AnimationDataList::const_iterator cend,
float time,
Q3DSAnimator::DirtyPropertyList *dirtyList,
bool sync)
{
QVector3D vec3;
// If sync is set to true we mark all as dirty to make sure the target property and the
// animation node values are in sync.
bool changed = sync;
while (cit != cend) {
if (cit->type == Q3DSAnimationData::DataType::Component) {
const auto &componentData = cit->componentData;
const auto &component = componentData.component;
const auto cKfBegin = cit + 1;
const auto cKfEnd = cKfBegin + componentData.size - 1;
Q_ASSERT(cKfBegin->type == Q3DSAnimationData::DataType::KeyFrame
&& cKfEnd->type == Q3DSAnimationData::DataType::KeyFrame);
// Don't evaluate if the component is marked as disabled
if (!(componentData.componentFlags & Q3DSAnimationData::ComponentFlags::Disabled)) {
changed |= evaluateAnimation(cKfBegin, cKfEnd, time, &componentData.value);
vec3[static_cast<int>(component)] = componentData.value;
} else {
changed = false;
}
cit = cKfEnd + 1; // Next should be either a component or a target (last kf + 1)
Q_ASSERT(cit->type == Q3DSAnimationData::DataType::Component
|| cit->type == Q3DSAnimationData::DataType::Target);
}
if (cit->type == Q3DSAnimationData::DataType::Target) {
if (changed)
dirtyList->push_back({&cit->targetData, std::move(vec3)});
changed = sync; // reset the changed value
++cit;
}
Q_ASSERT(cit == cend || cit->type == Q3DSAnimationData::DataType::Component);
}
}
void Q3DSAnimator::goToTime(float time, bool sync)
{
if (time < 0.0f || time > duration)
return;
localTime = time;
dirtyList.clear();
evaluateNodesAt(animationDataList.cbegin(), animationDataList.cend(), localTime, &dirtyList, sync);
syncDirtyProperties(dirtyList);
if (timeChangeCallback)
timeChangeCallback(localTime);
}
void Q3DSAnimator::advance(float dt)
{
if (!active) {
// We still need to make sure that object visibility is handled, so send a time update.
if (timeChangeCallback)
timeChangeCallback(localTime);
return;
}
const float newTime = qBound(0.0f, localTime + (dt * rate), duration);
bool eos = false;
bool resetLocalTime = false;
// 1. +rate && newTime == duration => EOS
// 2. -rate && newTime == 0.0f => EOS
// 3. !rate => no-op
// Note that we only notify aboud EOS when we're not looping/pingponging.
if (((rate > 0.0f) && qFuzzyCompare(newTime, duration)) || ((rate < 0.0f) && qFuzzyCompare(newTime, 0.0f))) {
switch (playMode) {
case PlayMode::PlayThroughTo:
// We don't handle slide changes here, as that's a foreign concept,
// so this needs to be handled by whoever registered for the eos callback.
Q_FALLTHROUGH();
case PlayMode::StopAtEnd:
eos = true;
break;
case PlayMode::Looping:
resetLocalTime = true;
break;
case PlayMode::Ping:
if (loopCount == 0) {
rate = (rate > 0.0f) ? -rate : -rate;
loopCount = 1;
} else {
loopCount = 0;
eos = true;
}
break;
case PlayMode::PingPong:
rate = -rate;
break;
}
}
if (!eos && qFuzzyCompare(newTime, localTime))
return;
goToTime(newTime);
// If we're looping we need to reset the local time now.
if (resetLocalTime)
localTime = (rate > 0.0f) ? 0.0f : duration;
if (eos && eosCallback)
eosCallback();
}
QT_END_NAMESPACE
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