/**
* Updates the positions and state of eyes to the underlying graphic, according to the most recent
* face detection results. The graphic will render the eyes and simulate the motion of the iris
* based upon these changes over time.
*/
@Override
public void onUpdate(FaceDetector.Detections<Face> detectionResults, Face face) {
mOverlay.add(mEyesGraphic);
updatePreviousProportions(face);
PointF leftPosition = getLandmarkPosition(face, Landmark.LEFT_EYE);
PointF rightPosition = getLandmarkPosition(face, Landmark.RIGHT_EYE);
float leftOpenScore = face.getIsLeftEyeOpenProbability();
boolean isLeftOpen;
if (leftOpenScore == Face.UNCOMPUTED_PROBABILITY) {
isLeftOpen = mPreviousIsLeftOpen;
} else {
isLeftOpen = (leftOpenScore > EYE_CLOSED_THRESHOLD);
mPreviousIsLeftOpen = isLeftOpen;
}
float rightOpenScore = face.getIsRightEyeOpenProbability();
boolean isRightOpen;
if (rightOpenScore == Face.UNCOMPUTED_PROBABILITY) {
isRightOpen = mPreviousIsRightOpen;
} else {
isRightOpen = (rightOpenScore > EYE_CLOSED_THRESHOLD);
mPreviousIsRightOpen = isRightOpen;
}
mEyesGraphic.updateEyes(leftPosition, isLeftOpen, rightPosition, isRightOpen);
}
/**
* Called when the face is assumed to be gone for good. Remove the googly eyes graphic from the
* overlay.
*/
@Override
public void onDone() {
mOverlay.remove(mEyesGraphic);
}
/**
* Hide the graphic when the corresponding face was not detected. This can happen for intermediate
* frames temporarily (e.g., if the face was momentarily blocked from view).
*/
@Override
public void onMissing(FaceDetector.Detections<Face> detectionResults) {
mOverlay.remove(mEyesGraphic);
}