Method onAverageButtonClicked

Gui/TrackerPanel.cpp:986–1120

}

void
TrackerPanel::onAverageButtonClicked()
{
    TrackerContextPtr context = getContext();

    assert(context);
    std::list<TrackMarkerPtr> markers;
    context->getSelectedMarkers(&markers);
    if ( markers.empty() ) {
        Dialogs::warningDialog( tr("Average").toStdString(), tr("No tracks selected").toStdString() );

        return;
    }

    TrackMarkerPtr marker = makeTrackInternal();
    KnobDoublePtr centerKnob = marker->getCenterKnob();

#ifdef AVERAGE_ALSO_PATTERN_QUAD
    KnobDoublePtr topLeftKnob = marker->getPatternTopLeftKnob();
    KnobDoublePtr topRightKnob = marker->getPatternTopRightKnob();
    KnobDoublePtr btmRightKnob = marker->getPatternBtmRightKnob();
    KnobDoublePtr btmLeftKnob = marker->getPatternBtmLeftKnob();
#endif

    RangeD keyframesRange;
    keyframesRange.min = std::numeric_limits<int>::max();
    keyframesRange.max = std::numeric_limits<int>::min();
    for (std::list<TrackMarkerPtr>::iterator it = markers.begin(); it != markers.end(); ++it) {
        KnobDoublePtr markCenter = (*it)->getCenterKnob();
        double mini, maxi;
        bool hasKey = markCenter->getFirstKeyFrameTime(ViewSpec(0), 0, &mini);
        if (!hasKey) {
            continue;
        }
        if (mini < keyframesRange.min) {
            keyframesRange.min = mini;
        }
        hasKey = markCenter->getLastKeyFrameTime(ViewSpec(0), 0, &maxi);

        ///both dimensions must have keyframes
        assert(hasKey);
        if (maxi > keyframesRange.max) {
            keyframesRange.max = maxi;
        }
    }

    bool hasKeyFrame = keyframesRange.min != std::numeric_limits<int>::min() && keyframesRange.max != std::numeric_limits<int>::max();
    for (double t = keyframesRange.min; t <= keyframesRange.max; t += 1) {
        Point avgCenter;
        avgCenter.x = avgCenter.y = 0.;

#ifdef AVERAGE_ALSO_PATTERN_QUAD
        Point avgTopLeft, avgTopRight, avgBtmRight, avgBtmLeft;
        avgTopLeft.x = avgTopLeft.y = avgTopRight.x = avgTopRight.y = avgBtmRight.x = avgBtmRight.y = avgBtmLeft.x = avgBtmLeft.y = 0;
#endif


        for (std::list<TrackMarkerPtr>::iterator it = markers.begin(); it != markers.end(); ++it) {