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accel_profile_smooth_simple: Make 0.0-1.0 accel range depend on threshold

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Instead of always going from an accel of 0.0 to 1.0 between a velocity of
0.0 and 1.0, make the lead-in length of the curve depend on the threshold
setting, using half of the threshold for the lead-in.

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 16:59:50 +02:00 • committed by Peter Hutterer
parent 6e8f5f28e2
commit 289949d0c4
1 changed files with 2 additions and 2 deletions
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src/filter.c
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@ -343,8 +343,8 @@ pointer_accel_profile_smooth_simple(struct motion_filter *filter,
velocity *= DEFAULT_CONSTANT_ACCELERATION;
if (velocity < 1.0)
return calc_penumbral_gradient(0.5 + velocity * 0.5) * 2.0 - 1.0;
if (velocity < (threshold / 2.0))
return calc_penumbral_gradient(0.5 + velocity / threshold) * 2.0 - 1.0;
if (velocity <= threshold)
return 1.0;