Method nudgeSelectedTracks

Engine/TrackerNodeInteract.cpp:1434–1484

*@brief Moves of the given pixel the selected tracks. * This takes into account the zoom factor. **/

 * This takes into account the zoom factor.
 **/
bool
TrackerNodeInteract::nudgeSelectedTracks(int x,
                                         int y)
{
    if (!isInsideSelectedMarkerTexture(lastMousePos)) {
        return false;
    }
    std::list<TrackMarkerPtr> markers;

    getContext()->getSelectedMarkers(&markers);

    if ( !markers.empty() ) {
        std::pair<double, double> pixelScale;
        _p->publicInterface->getCurrentViewportForOverlays()->getPixelScale(pixelScale.first, pixelScale.second);
        double time = _p->publicInterface->getCurrentTime();
        bool createkey = createKeyOnMoveButton.lock()->getValue();

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

            if (!(*it)->isEnabled(time)) {
                continue;
            }
            KnobDoublePtr centerKnob = (*it)->getCenterKnob();
            KnobDoublePtr patternCorners[4];
            patternCorners[0] = (*it)->getPatternBtmLeftKnob();
            patternCorners[1] = (*it)->getPatternTopLeftKnob();
            patternCorners[2] = (*it)->getPatternTopRightKnob();
            patternCorners[3] = (*it)->getPatternBtmRightKnob();

            centerKnob->setValuesAtTime(time, centerKnob->getValueAtTime(time, 0) + x,
                                        centerKnob->getValueAtTime(time, 1) + y,
                                        ViewSpec::all(),
                                        eValueChangedReasonPluginEdited);
            for (int i = 0; i < 4; ++i) {
                for (int d = 0; d < patternCorners[i]->getDimension(); ++d) {
                    patternCorners[i]->setValueAtTime(time, patternCorners[i]->getValueAtTime(time, d), ViewSpec::all(), d);
                }
            }
            if (createkey) {
                (*it)->setUserKeyframe(time);
            }
            hasMovedMarker = true;
        }
        refreshSelectedMarkerTexture();

        return hasMovedMarker;
    }

    return false;
}

void
TrackerNodeInteract::transformPattern(double time,