It doesn't support straight lines (1D lines), like a single stroke right. According to the PDF you need to implement your own bounding box analysis for this. I

It doesn't support straight lines (1D lines), like a single stroke right. According to the PDF you need to implement your own bounding box analysis for this. I was reading about it this week because I needed a gesture recognition library but haven't found anything else. BetterTouchTool uses this library.