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Excuse my very poor English.
I am a very beginner.
I would like to be guided please.
My project :
1. I have a picture for example 1200/1200 pixels.
2. At any point in the picture, I click with the mouse to have a point "c".
3. This point "c" becomes the center of 5 concentric rings.
4. I would like to turn the rings a few degrees clockwise or counter-clockwise.
I have no idea that the pixels of the original photo become the pixels of my rings.
It would be nice of me to orient myself.
What i want to do is this but in movement....