touchcal man page on Inferno

touchcal man page on Inferno

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TOUCHCAL(8)							   TOUCHCAL(8)

NAME
       touchcal - touch screen calibration

SYNOPSIS
       touchcal

DESCRIPTION
       Touchcal	 draws	a  cross-hair  in  each	 corner	 of the screen in turn
       (clockwise from the lower left hand corner), and waits  each  time  for
       the  user  to  touch  the centre of the cross-hair with the stylus.  It
       then prompts with a final cross-hair in the centre of the  screen,  and
       waits  once more for the user to touch its centre with the stylus.  The
       process is repeated  until  touchcal  can  calculate  a	transformation
       matrix  that  consistently  maps the touch panel to screen coordinates.
       It then writes corresponding calibration commands for touch(3)  on  its
       standard	 output,  which	 can be saved in a file on the device, perhaps
       provided in NVRAM by tinyfs(3) or a file system in ftl(3).

       Touchcal can be used both inside and  outside  the  wm(1)  environment,
       allowing	 calibration  when  the	 system is initialised, and whilst the
       window system is running.

FILES
       /dev/touchctl
	      reset or read existing settings

SOURCE
       /appl/cmd/touchcal.b

SEE ALSO
       touch(3)

								   TOUCHCAL(8)

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