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Fixed bug 3446 - The haptic API does not allow to select the direction axes

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meyraud705

Added Linux implementation, otherwise you get "Unsupported direction type" error.
Added documentation to explain why one would use SDL_HAPTIC_FIRST_AXIS.
This commit is contained in:
Sam Lantinga 2020-03-17 14:18:05 -07:00
parent e6189f4046
commit 4c22a21e06
2 changed files with 15 additions and 2 deletions
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13
include/SDL_haptic.h
View File

@ -338,7 +338,17 @@ typedef struct _SDL_Haptic SDL_Haptic;
/**
* \brief Uses first axis only.
*
* For some device with only one axis (steering wheel,...),
* SDL_HAPTIC_CARTESIAN does not work. SDL_HAPTIC_FIRST_AXIS can be used in
* this case.
* Using SDL_HAPTIC_FIRST_AXIS is equivalent to :
* \code
* SDL_HapticDirection direction;
* direction.type = SDL_HAPTIC_CARTESIAN;
* direction.dir[0] = 1;
* direction.dir[1] = 0;
* direction.dir[2] = 0;
* \endcode
* \sa SDL_HapticDirection
*/
#define SDL_HAPTIC_FIRST_AXIS 3
@ -451,6 +461,7 @@ typedef struct _SDL_Haptic SDL_Haptic;
* \sa SDL_HAPTIC_POLAR
* \sa SDL_HAPTIC_CARTESIAN
* \sa SDL_HAPTIC_SPHERICAL
* \sa SDL_HAPTIC_FIRST_AXIS
* \sa SDL_HapticEffect
* \sa SDL_HapticNumAxes
*/

4
src/haptic/linux/SDL_syshaptic.c
View File

@ -718,7 +718,9 @@ SDL_SYS_ToDirection(Uint16 *dest, SDL_HapticDirection * src)
*dest = (Uint16) tmp;
}
break;
case SDL_HAPTIC_FIRST_AXIS:
*dest = 0x4000;
break;
default:
return SDL_SetError("Haptic: Unsupported direction type.");
}