bool
TrackMarkerPM::trackMarker(bool forward,
int refFrame,
int frame)
{
KnobButtonPtr button;
if (forward) {
button = trackNextButton.lock();
} else {
button = trackPrevButton.lock();
}
KnobIntPtr refFrameK = refFrameKnob.lock();
refFrameK->setValue(refFrame);
// Unslave the center knob since the trackerNode will update it, then update the marker center
KnobDoublePtr center = centerKnob.lock();
center->unlink(DimSpec::all(), ViewSetSpec::all(), true);
trackerNode->getEffectInstance()->onKnobValueChanged_public(button, eValueChangedReasonUserEdited, TimeValue(frame), ViewIdx(0));
KnobDoublePtr markerCenter = getCenterKnob();
// The TrackerPM plug-in has set a keyframe at the refFrame and frame, copy them
bool ret = true;
double centerPoint[2];
for (int i = 0; i < center->getNDimensions(); ++i) {
{
int index = center->getKeyFrameIndex(ViewIdx(0), DimIdx(i), TimeValue(frame));
if (index != -1) {
centerPoint[i] = center->getValueAtTime(TimeValue(frame), DimIdx(i));
markerCenter->setValueAtTime(TimeValue(frame), centerPoint[i], ViewSetSpec::all(), DimIdx(i));
} else {
// No keyframe at this time: tracking failed
ret = false;
break;
}
}
{
int index = center->getKeyFrameIndex(ViewIdx(0), DimIdx(i), TimeValue(refFrame));
if (index != -1) {
double value = center->getValueAtTime(TimeValue(refFrame), DimIdx(i));
markerCenter->setValueAtTime(TimeValue(refFrame), value, ViewSetSpec::all(), DimIdx(i));
}
}
}
// Convert the correlation score of the TrackerPM to the error
if (ret) {
KnobDoublePtr markerError = getErrorKnob();
KnobDoublePtr correlation = correlationScoreKnob.lock();
{
int index = correlation->getKeyFrameIndex(ViewIdx(0), DimIdx(0), TimeValue(frame));
if (index != -1) {
// The error is estimated as a percentage of the correlation across the number of pixels in the pattern window
KnobDoublePtr pBtmLeft = patternBtmLeftKnob.lock();
KnobDoublePtr pTopRight = patternTopRightKnob.lock();
Point btmLeft, topRight;
btmLeft.x = pBtmLeft->getValueAtTime(TimeValue(frame), DimIdx(0));
btmLeft.y = pBtmLeft->getValueAtTime(TimeValue(frame), DimIdx(1));
topRight.x = pTopRight->getValueAtTime(TimeValue(frame), DimIdx(0));
topRight.y = pTopRight->getValueAtTime(TimeValue(frame), DimIdx(1));
double areaPixels = (topRight.x - btmLeft.x) * (topRight.y - btmLeft.y);
NodePtr trackerInput = trackerNode->getInput(0);
if (trackerInput) {
ImagePlaneDesc comps, paireComps;
trackerInput->getEffectInstance()->getMetadataComponents(-1, &comps, &paireComps);
areaPixels *= comps.getNumComponents();
}
double value = correlation->getValueAtTime(TimeValue(frame), DimIdx(0));
// Convert to a percentage
if (areaPixels > 0) {
value /= areaPixels;
}
markerError->setValueAtTime(TimeValue(frame), value, ViewSetSpec::all(), DimIdx(0));
}
}
}
if ( !center->linkTo(markerCenter) ) {
throw std::runtime_error("Could not link center");
}
return ret;
} // TrackMarkerPM::trackMarker
bool
TrackMarkerPM::trackMarker(bool forward,
int refFrame,
int frame)
{
KnobButtonPtr button;
if (forward) {
button = trackNextButton.lock();
} else {
button = trackPrevButton.lock();
}
KnobIntPtr refFrameK = refFrameKnob.lock();
refFrameK->setValue(refFrame);
// Unslave the center knob since the trackerNode will update it, then update the marker center
KnobDoublePtr center = centerKnob.lock();
for (int i = 0; i < center->getDimension(); ++i) {
center->unSlave(i, true);
}
trackerNode->getEffectInstance()->onKnobValueChanged_public(button, eValueChangedReasonNatronInternalEdited, frame, ViewIdx(0),
true);
KnobDoublePtr markerCenter = getCenterKnob();
// The TrackerPM plug-in has set a keyframe at the refFrame and frame, copy them
bool ret = true;
double centerPoint[2];
for (int i = 0; i < center->getDimension(); ++i) {
{
int index = center->getKeyFrameIndex(ViewSpec::current(), i, frame);
if (index != -1) {
centerPoint[i] = center->getValueAtTime(frame, i);
markerCenter->setValueAtTime(frame, centerPoint[i], ViewSpec::current(), i);
} else {
// No keyframe at this time: tracking failed
ret = false;
break;
}
}
{
int index = center->getKeyFrameIndex(ViewSpec::current(), i, refFrame);
if (index != -1) {
double value = center->getValueAtTime(refFrame, i);
markerCenter->setValueAtTime(refFrame, value, ViewSpec::current(), i);
}
}
}
// Convert the correlation score of the TrackerPM to the error
if (ret) {
KnobDoublePtr markerError = getErrorKnob();
KnobDoublePtr correlation = correlationScoreKnob.lock();
{
int index = correlation->getKeyFrameIndex(ViewSpec::current(), 0, frame);
if (index != -1) {
// The error is estimated as a percentage of the correlation across the number of pixels in the pattern window
KnobDoublePtr pBtmLeft = patternBtmLeftKnob.lock();
KnobDoublePtr pTopRight = patternTopRightKnob.lock();
Point btmLeft, topRight;
btmLeft.x = pBtmLeft->getValueAtTime(frame, 0);
btmLeft.y = pBtmLeft->getValueAtTime(frame, 1);
topRight.x = pTopRight->getValueAtTime(frame, 0);
topRight.y = pTopRight->getValueAtTime(frame, 1);
double areaPixels = (topRight.x - btmLeft.x) * (topRight.y - btmLeft.y);
NodePtr trackerInput = trackerNode->getInput(0);
if (trackerInput) {
ImageComponents comps = trackerInput->getEffectInstance()->getComponents(-1);
areaPixels *= comps.getNumComponents();
}
double value = correlation->getValueAtTime(frame, 0);
// Convert to a percentage
value /= areaPixels;
markerError->setValueAtTime(frame, value, ViewSpec::current(), 0);
}
}
}
for (int i = 0; i < center->getDimension(); ++i) {
center->slaveTo(i, markerCenter, i);
}
return ret;
} // TrackMarkerPM::trackMarker