Method onAverageTracksButtonClicked

Gui/MultiInstancePanel.cpp:1912–1995

}

void
TrackerPanelV1::onAverageTracksButtonClicked()
{
    std::list<Node*> selectedInstances;

    getSelectedInstances(&selectedInstances);
    if ( selectedInstances.empty() ) {
        Dialogs::warningDialog( tr("Average").toStdString(), tr("No tracks selected").toStdString() );

        return;
    }

    NodePtr newInstance = addInstanceInternal(true);
    ///give an appropriate name to the new instance
    int avgIndex = 0;
    const std::list<std::pair<NodeWPtr, bool > > & allInstances = getInstances();
    for (std::list<std::pair<NodeWPtr, bool > >::const_iterator it = allInstances.begin();
         it != allInstances.end(); ++it) {
        if ( QString::fromUtf8( it->first.lock()->getScriptName().c_str() ).contains(QString::fromUtf8("average"), Qt::CaseInsensitive) ) {
            ++avgIndex;
        }
    }
    QString newName = QString::fromUtf8("Average%1").arg(avgIndex + 1);
    try {
        newInstance->setScriptName( newName.toStdString() );
    } catch (...) {
    }

    newInstance->updateEffectLabelKnob(newName);

    KnobDoublePtr newInstanceCenter = getCenterKnobForTracker( newInstance.get() );
    std::list<KnobDoublePtr> centers;
    RangeD keyframesRange;
    keyframesRange.min = std::numeric_limits<int>::max();
    keyframesRange.max = std::numeric_limits<int>::min();

    for (std::list<Node*>::iterator it = selectedInstances.begin(); it != selectedInstances.end(); ++it) {
        KnobDoublePtr dblKnob = getCenterKnobForTracker(*it);
        centers.push_back(dblKnob);
        double mini, maxi;
        bool hasKey = dblKnob->getFirstKeyFrameTime(ViewIdx(0), 0, &mini);
        if (!hasKey) {
            continue;
        }
        if (mini < keyframesRange.min) {
            keyframesRange.min = mini;
        }

        hasKey = dblKnob->getLastKeyFrameTime(ViewIdx(0), 0, &maxi);

        ///both dimensions must have keyframes
        assert(hasKey);
        if (maxi > keyframesRange.max) {
            keyframesRange.max = maxi;
        }
    }
    if (keyframesRange.min == std::numeric_limits<int>::min()) {
        keyframesRange.min = 0;