(3. Get the coordinates of multiple contact points - please download all the contents of this video tutorial in the special topic for the course "Operation and Use of Multiple Contact Points". You can update a lot of other tutorials such as massive software development, performance optimization, network development, etc. You can click my user name to check various resources published by me
3. Obtain coordinates of multiple contact points - Operation and Use of Multi point Contact - produced by Geek Academy - Geek Academy. mp4
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