Re: 90 Rotation in one buffer only

answer to ur question is:

transpose + flip

first just do a simple swap

pixel(x,y) <-> pixel(y,x) -> u need only one temp byte -> 270 deg
rotation

then flip along the vertical axis.

pixel(x,y) <->pixel(M-x,y) -> 90 deg rotation

u can use the same temp byte for this process as well.

in one step = pixel(x,y) <-> pixel(M-y,x)

pretty straightforward and simple

.

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