Features not detected

[edap]

It looks like:

auto leftEye = tracker.getImageFeature(ofxFaceTracker::LEFT_EYE_TOP).getCentroid2D();
auto rightEye = tracker.getImageFeature(ofxFaceTracker::RIGHT_EYE_TOP).getCentroid2D();

they both return the same position.

Also, tracker.draw() should draw all the features detected. At the moment is just drawing the nose base and the mouth.

@bakercp , as I've seen that you updated the example recently, does example-empty draw all the features, or just the nose and the mouth?

[edap]

The problem happens only on linux, this pull requests solve the issue
#152

Basically, the osx and the linux compilers behave differently with the returning value of a function. The linux one, was complaining regarding the function getFeatureIndices, that it is not always returning a vector<int>, or, at least, no value is specified in the case none of the features matches that ones in the switch statement. While trying to fixing this, I have introduced a new error, forgetting to add break at the end of each case.

Please note, without this pull request the addon does not even compile on Linux.