Hi all,

I'm developing a tool to rotate a static image layer and I'm currently 
facing an issue on mobile.

Static image must rotate around a specific point. I use precompose and 
postcompose hooks in order to alter canvas and make the rotation.
It works great on desktop but i don't understand what is going on on mobile 
(Android Chrome or FF).

jsFiddle : https://jsfiddle.net/wuty2m9v/7/

On desktop, image rotate correctly around the point. Drag the map : point 
and image follow the map.
On mobile, image doesn't rotate correctly around the point. Rotation is 
made on the canvas origin, canvas translations don't look good. Drag the 
map to watch the chaos :)

Thank you guys.

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