/**
* Adjusts the x coordinate from the preview's coordinate system to the view coordinate system.
*/
public float translateX(float x) {
if (mOverlay.mFacing == CameraSource.CAMERA_FACING_FRONT) {
return mOverlay.getWidth() - scaleX(x);
} else {
return scaleX(x);
}
}
/**
* Called when the item is assumed to be gone for good. Remove the graphic annotation from the
* overlay.
*/
@Override
public void onDone() {
mOverlay.remove(mGraphic);
}
/**
* Hide the graphic when the corresponding face was not detected. This can happen for intermediate
* frames temporarily, for example if the face was momentarily blocked from view.
*/
@Override
public void onMissing(Detector.Detections<T> detectionResults) {
mOverlay.remove(mGraphic);
}
/** Update the position/characteristics of the item within the overlay. */
@Override
public void onUpdate(Detector.Detections<T> detectionResults, T item) {
mOverlay.add(mGraphic);
mGraphic.updateItem(item);
}
public void postInvalidate() {
mOverlay.postInvalidate();
}