This UI is Unity GUI(UGUI) component!
This effect simulates the effect of liquid flow outline of the photo!
The lines will move from left to right. When they move, they will generate an outline according to the photo.
You can use your own photo to produce this effect
Demo video: https://www.youtube.com/watch?v=E_8ik7hx4u8
This package include all the source code and instructions.