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accel_profile_smooth_simple: Fix jump in acceleration curve

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There was an error in the value passed to the second calc_penumbral_gradient
call causing a jump in the acceleration curve. This commit fixes this.

Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Reviewed-by: Peter Hutterer <peter.hutterer@who-t.net>
Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>
This commit is contained in:
Hans de Goede 2014-07-04 17:17:14 +02:00 • committed by Peter Hutterer
parent 4da6dd52a4
commit 6e8f5f28e2
1 changed files with 3 additions and 1 deletions
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4
src/filter.c
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@ -353,6 +353,8 @@ pointer_accel_profile_smooth_simple(struct motion_filter *filter,
if (velocity >= accel)
return accel;
smooth_accel_coefficient = calc_penumbral_gradient(velocity / accel);
/* Velocity is between 1.0 and accel, scale this to 0.0 - 1.0 */
velocity = (velocity - 1.0) / (accel - 1.0);
smooth_accel_coefficient = calc_penumbral_gradient(velocity);
return 1.0 + (smooth_accel_coefficient * (accel - 1.0));
}