"Robert McGregor" <rob### [at] mcgregorfineartcom> wrote:
> (B) is that same image with quadrants offset diagonally (this is
> important for tiling).

And this is the part where I always get lost with the tiling thing.

I recall seeing a good tutorial on how to "do this with any image" back in like
1995, but when I searched recently, all I got was very unhelpful, overly
complicated methods.

Does quadrants "offset" diagonally mean _swapped_ diagonally?
Like scale <-1, -1, 1> ?

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