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Mousekeys inertia zero friction improvements #23677

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Mousekeys inertia zero friction improvements #23677

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af7aa13
Make acceleration consistent for all directions
chaorace May 7, 2024
463a228
Added MOUSEKEY_STOP_SPEED to inertial mousekeys
chaorace May 7, 2024
f3d9898
Brought calc_inertia in line with stlyeguide
chaorace May 7, 2024
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Brought calc_inertia in line with stlyeguide
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@chaorace
chaorace committed May 7, 2024
commit f3d9898e76f202f760c97cd37e2eebfac0433b83
10 changes: 6 additions & 4 deletions quantum/mousekey.c
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Original file line number Diff line number Diff line change
Expand Up @@ -288,16 +288,18 @@ static int8_t calc_inertia(int8_t direction, int8_t velocity) {
// simulate acceleration and deceleration

// deceleration
if (velocity != 0)
if (velocity != 0) {
velocity = velocity * (256 - MOUSEKEY_FRICTION) / 256;
}

// acceleration
if ((direction > 0) && (velocity < mk_time_to_max))
if ((direction > 0) && (velocity < mk_time_to_max)) {
velocity++;
else if ((direction < 0) && (velocity > -mk_time_to_max))
} else if ((direction < 0) && (velocity > -mk_time_to_max)) {
velocity--;
else if (velocity <= MOUSEKEY_STOP_SPEED && velocity >= -MOUSEKEY_STOP_SPEED)
} else if (velocity <= MOUSEKEY_STOP_SPEED && velocity >= -MOUSEKEY_STOP_SPEED) {
velocity = 0;
}

return velocity;
}
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