Method setKnobKeyframesFromMarker

Engine/TrackerContextPrivate.cpp:707–767

* @brief Set keyframes on knobs from Marker data **/

 * @brief Set keyframes on knobs from Marker data
 **/
void
TrackerContextPrivate::setKnobKeyframesFromMarker(const mv::Marker& mvMarker,
                                                  int /*formatHeight*/,
                                                  const libmv::TrackRegionResult* result,
                                                  const TrackMarkerPtr& natronMarker)
{
    int time = mvMarker.frame;
    KnobDoublePtr errorKnob = natronMarker->getErrorKnob();

    if (result) {
        double corr = result->correlation;
        if (corr != corr) {
            corr = 1.;
        }
        errorKnob->setValueAtTime(time, 1. - corr, ViewSpec::current(), 0);
    } else {
        errorKnob->setValueAtTime(time, 0., ViewSpec::current(), 0);
    }

    // Blender also adds 0.5 to coordinates
    Point center;
    center.x = (double)mvMarker.center(0);
    center.y = (double)mvMarker.center(1);

    KnobDoublePtr offsetKnob = natronMarker->getOffsetKnob();
    Point offset;
    offset.x = offsetKnob->getValueAtTime(time, 0);
    offset.y = offsetKnob->getValueAtTime(time, 1);

    Point centerPlusOffset;
    centerPlusOffset.x = center.x + offset.x;
    centerPlusOffset.y = center.y + offset.y;

    // Set the center
    KnobDoublePtr centerKnob = natronMarker->getCenterKnob();
    centerKnob->setValuesAtTime(time, center.x + 0.5, center.y + 0.5, ViewSpec::current(), eValueChangedReasonNatronInternalEdited);

    Point topLeftCorner, topRightCorner, btmRightCorner, btmLeftCorner;
    topLeftCorner.x = mvMarker.patch.coordinates(3, 0) - centerPlusOffset.x;
    topLeftCorner.y = mvMarker.patch.coordinates(3, 1) - centerPlusOffset.y;

    topRightCorner.x = mvMarker.patch.coordinates(2, 0) - centerPlusOffset.x;
    topRightCorner.y = mvMarker.patch.coordinates(2, 1) - centerPlusOffset.y;

    btmRightCorner.x = mvMarker.patch.coordinates(1, 0) - centerPlusOffset.x;
    btmRightCorner.y = mvMarker.patch.coordinates(1, 1) - centerPlusOffset.y;

    btmLeftCorner.x = mvMarker.patch.coordinates(0, 0) - centerPlusOffset.x;
    btmLeftCorner.y = mvMarker.patch.coordinates(0, 1) - centerPlusOffset.y;

    KnobDoublePtr pntTopLeftKnob = natronMarker->getPatternTopLeftKnob();
    KnobDoublePtr pntTopRightKnob = natronMarker->getPatternTopRightKnob();
    KnobDoublePtr pntBtmLeftKnob = natronMarker->getPatternBtmLeftKnob();
    KnobDoublePtr pntBtmRightKnob = natronMarker->getPatternBtmRightKnob();

    // Set the pattern Quad
    pntTopLeftKnob->setValuesAtTime(time, topLeftCorner.x, topLeftCorner.y, ViewSpec::current(), eValueChangedReasonNatronInternalEdited);
    pntTopRightKnob->setValuesAtTime(time, topRightCorner.x, topRightCorner.y, ViewSpec::current(), eValueChangedReasonNatronInternalEdited);