[PATCH] xrandr: add more information about the transform option in the manpage

Matthias Hopf mhopf at suse.de
Tue Jan 5 06:00:35 PST 2010

On Jan 04, 10 15:15:00 +0100, Éric Piel wrote:
> Looks fine to me. I wonder why you called the 3rd coordinate 'w' instead
> of the usual 'z', but otherwise it's very clear. Especially, the

This is standard for homogenous coordinates. You know, this concept is
also used in 3D computer graphics, and there you naturally already have
x, y, and z coordinates. So the homogenous component would have to be
named differently :-]

> mathematics formula is readable line by line, but can also be easily
> converted to the vector-based writing :-)

Indeed. As the mathematics in vector form is close to trivial, I wanted
to add the written form in a way that is understandable to people not
fluent in vector mathematics :)

> BTW, it seems that the normal term is "keystone correction" instead of
> "keystone shaping" as I wrote. You might want to fix it.

Ah, overlooked that. Also you wrote 'beamer', which is a false friend.
It's a slang term used for BMW cars, not for projectors ;-)
However, as Germans use this term often, most native speakers have
adapted in the meantime and understand it :-)



Matthias Hopf <mhopf at suse.de>      __        __   __
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