Recognizing gestures – drawing with the finger
The previous section explained how to obtain string representations from gestures. The current section explains how to use those string representations to recognize the gestures. Kivy has some tolerance error in the gesture recognition, so you don't have to worry about repeating exactly the same stroke.
To start, we copied the strings that were generated from the strokes in the previous section into a new file called gestures.py. The strings are assigned to different variables. The following code corresponds to gestures.py:
212. # File Name: gestures.py 213. line45_str = 'eNq1VktuI0cM3fdFrM0I... 214. circle_str = 'eNq1WMtuGzkQvM+P2JcI/Sb5A9rrA... 215. cross_str = 'eNq1V9tuIzcMfZ8fSV5qiH...
Only the first few characters of the strings are shown in the previous code but you can download the complete file from the Packt Publishing website, or use the previous section to generate your own strings.
Next, we will use these strings in the drawingspace...
