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Use the correct orientation transformation based on whether the device is naturally landscape or portrait

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Sam Lantinga 2023-06-17 08:04:34 -07:00
parent e6d1ba2a17
commit 9eb5eab0ad
1 changed files with 21 additions and 9 deletions
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30
src/joystick/SDL_gamepad.c
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@ -377,15 +377,27 @@ static void RecenterGamepad(SDL_Gamepad *gamepad)
*/
static void AdjustSensorOrientation(float *src, float *dst)
{
/* When a phone is rotated left and laid flat, the axes change
orientation as follows:
-X to +X becomes +Z to -Z
-Y to +Y becomes +X to -X
-Z to +Z becomes -Y to +Y
*/
dst[0] = -src[1];
dst[1] = src[2];
dst[2] = -src[0];
if (SDL_GetDisplayNaturalOrientation(SDL_GetPrimaryDisplay()) == SDL_ORIENTATION_LANDSCAPE) {
/* When a device in landscape orientation is laid flat, the axes change
orientation as follows:
-X to +X becomes -X to +X
-Y to +Y becomes +Z to -Z
-Z to +Z becomes -Y to +Y
*/
dst[0] = src[0];
dst[1] = src[2];
dst[2] = -src[1];
} else {
/* When a device in portrait orientation is rotated left and laid flat,
the axes change orientation as follows:
-X to +X becomes +Z to -Z
-Y to +Y becomes +X to -X
-Z to +Z becomes -Y to +Y
*/
dst[0] = -src[1];
dst[1] = src[2];
dst[2] = -src[0];
}
}
/*