Mercurial > sdl-ios-xcode
diff src/joystick/linux/SDL_sysjoystick.c @ 872:e7be95d758e8
Date: Fri, 05 Mar 2004 16:08:01 +0000
From: Alan Swanson
Subject: Re: [SDL] Fatal signal when initiaize with USB joystick on 2.6.2 kern
On Fri, 2004-03-05 at 15:09, Sam Lantinga wrote:
> > Fred, how does the attached patch work for you? Do all your axes work?
>
> I think you meant the two lines to be reversed.
> I checked a more robust version of this into CVS. Fred, can you see if
> it works?
You've misread the code. :-/
For coef[0] and coef[1], it is (values[2]+values[1]) / 2 and then add
or subtract values[4] to the answer.
| author | Sam Lantinga <slouken@libsdl.org> |
|---|---|
| date | Sat, 06 Mar 2004 02:58:06 +0000 |
| parents | 9cc9e2462d9a |
| children | dc29e5907694 |
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--- a/src/joystick/linux/SDL_sysjoystick.c Fri Mar 05 15:09:18 2004 +0000 +++ b/src/joystick/linux/SDL_sysjoystick.c Sat Mar 06 02:58:06 2004 +0000 @@ -436,17 +436,15 @@ joystick->hwdata->abs_correct[i].used = 0; } else { joystick->hwdata->abs_correct[i].used = 1; - t = (2 - values[4]); - if ( t != 0 ) { - joystick->hwdata->abs_correct[i].coef[0] = (values[2] + values[1]) / t; - } - t = (2 + values[4]); - if ( t != 0 ) { - joystick->hwdata->abs_correct[i].coef[1] = (values[2] + values[1]) / t; - } + joystick->hwdata->abs_correct[i].coef[0] = + (values[2] + values[1]) / 2 - values[4]; + joystick->hwdata->abs_correct[i].coef[1] = + (values[2] + values[1]) / 2 + values[4]; t = ((values[2] - values[1]) / 2 - 2 * values[4]); if ( t != 0 ) { joystick->hwdata->abs_correct[i].coef[2] = (1 << 29) / t; + } else { + joystick->hwdata->abs_correct[i].coef[2] = 0; } } ++joystick->naxes;