jscal(1) [centos man page]

jscal(1)						      General Commands Manual							  jscal(1)

NAME

       jscal - joystick calibration and remapping program

SYNOPSIS

       jscal [options] <device-name>

DESCRIPTION

       jscal  calibrates  joysticks and maps joystick axes and buttons.  Calibrating a joystick ensures the positions on the various axes are cor-
       rectly interpreted.  Mapping axes and buttons allows the meanings of the joystick's axes and buttons to be redefined.

       On Debian systems the calibration settings can be stored and later applied automatically using the jscal-store command.

OPTIONS

       -c, --calibrate
	      Calibrate the joystick.

       -h, --help
	      Print out a summary of available options.

       -s, --set-correction <nb_axes,type,precision,coefficients,...>
	      Sets correction to specified values.  For each axis, specify the correction type (0 for none, 1 for "broken line"),  the	precision,
	      and if necessary the correction coefficients ("broken line" corrections take four coefficients).

       -u, --set-mappings <nb_axes,axmap1,axmap2,...,nb_buttons,btnmap1,btnmap2,...>
	      Sets axis and button mappings.  n_of_buttons can be set to 0 to remap axes only.

       -t, --test-center
	      Tests  if the joystick is correctly calibrated.  Returns 2 if the axes are not calibrated, 3 if buttons were pressed, 1 if there was
	      any other error, and 0 on success.

       -V, --version
	      Prints the version numbers of the running joystick driver and that which jscal was compiled for.

       -p, --print-correction
	      Prints the current correction settings.  The format of the output is a jscal command line.

       -q, --print-mappings
	      Prints the current axis and button mappings.  The format of the output is a jscal command line.

CALIBRATION

       Using the Linux input system, joysticks are expected to produce values between -32767 and 32767 for axes, with 0 meaning  the  joystick	is
       centred.   Thus,  full-left  should produce -32767 on the X axis, full-right 32767 on the X axis, full-forward -32767 on the Y axis, and so
       on.

       Many joysticks and gamepads (especially older ones) are slightly mis-aligned; as a result they may not use the full range  of  values  (for
       the  extremes  of the axes), or more annoyingly they may not give 0 when centred.  Calibrating a joystick provides the kernel with informa-
       tion on a joystick's real behaviour, which allows the kernel to correct various joysticks' deficiencies and produce  consistent	output	as
       far as joystick-using software is concerned.

       jstest(1)  is  useful  to  determine whether a joystick is calibrated: when run, it should produce all 0s when the joystick is at rest, and
       each axis should be able to produce the values -32767 and 32767.  Analog joysticks should produce values in between 0 and the extremes, but
       this is not necessary; digital directional pads work fine with only the three values.

SEE ALSO

       ffset(1), jstest(1), jscal-store(1).

AUTHORS

       jscal was written by Vojtech Pavlik and improved by many others; see the linuxconsole tools documentation for details.

       This manual page was written by Stephen Kitt <steve@sk2.org>, for the Debian GNU/Linux system (but may be used by others).

jscal								   Jul 11, 2010 							  jscal(1)

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glutJoystickFunc(3GLUT) 					       GLUT						   glutJoystickFunc(3GLUT)

NAME

       glutJoystickFunc - sets the joystick callback for the current window.

SYNTAX

       #include <GLUT/glut.h>

       void glutJoystickFunc(void (*func)(unsigned int buttonMask,
			    int x, int y, int z), int pollInterval);

ARGUMENTS

       func	 The new joystick callback function.

       pollInterval
		 Joystick polling interval in milliseconds.

DESCRIPTION

       glutJoystickFunc sets the joystick callback for the current window.

       The joystick callback is called either due to polling of the joystick at the uniform timer interval specified by pollInterval (in millisec-
       onds) or in response to calling glutForceJoystickFunc.  If the pollInterval is non-positive, no joystick polling is performed and the  GLUT
       application must frequently (usually from an idle callback) call glutForceJoystickFunc.

       The  joystick  buttons are reported by the callback's buttonMask parameter.  The constants GLUT_JOYSTICK_BUTTON_A(0x1), GLUT_JOYSTICK_BUT-
       TON_B(0x2), GLUT_JOYSTICK_BUTTON_C(0x4), and GLUT_JOYSTICK_BUTTON_D(0x8) are provided for programming convience.

       The x, y, and z callback parameters report the X, Y, and Z axes of the joystick.  The joystick is centered at (0,0,0).  X,  Y,  and  Z  are
       scaled  to range between -1000 and 1000.  Moving the joystick left reports negative X; right reports positive X.  Pulling the stick towards
       you reports negative Y; push the stick away from you reports positive Y.  If the joystick has  a  third	axis  (rudder  or  up/down),  down
       reports negative Z; up reports positive Z.

       Passing	a NULL func to glutJoystickFunc disables the generation of joystick callbacks.	Without a joystick callback registered, glutForce-
       JoystickFunc does nothing.

       When a new window is created, no joystick callback is initially registered.

LIMITATIONS

       The GLUT joystick callback only reports the first 3 axes and 32 buttons.  GLUT supports only a single joystick.

GLUT IMPLEMENTATION NOTES FOR X11
       The GLUT 3.7 implementation of GLUT for X11 supports the joystick API, but not joystick input.  A future implementation of GLUT for X11 may
       add joystick support.

GLUT IMPLEMENTATION NOTES FOR WIN32
       The GLUT 3.7 implementation of GLUT for Win32 supports the joystick API and joystick input, but does so through the dated joySetCapture and
       joyGetPosEx Win32 Multimedia API.  The GLUT 3.7 joystick support for Win32 has all the limitations of the  Win32  Multimedia  API  joystick
       support.  A future implementation of GLUT for Win32 may use DirectInput.

SEE ALSO

       glutForceJoystickFunc,  glutMotionFunc,	glutMouseFunc, glutSpaceballButtonFunc, glutSpaceballMotionFunc, glutButtonBoxFunc, glutTabletBut-
       tonFunc, glutDeviceGet

AUTHOR

       Mark J. Kilgard (mjk@nvidia.com)

GLUT
									3.7						   glutJoystickFunc(3GLUT)

Linux and UNIX Man Pages

jscal(1) [centos man page]

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