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filter: localize a few variables

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No functional changes

Signed-off-by: Peter Hutterer <peter.hutterer@who-t.net>
This commit is contained in:
Peter Hutterer 2022-09-05 08:48:12 +10:00
parent 528f09a969
commit e59dc2ec58
1 changed files with 6 additions and 10 deletions
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16
src/filter.c
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@ -204,19 +204,15 @@ double
trackers_velocity(struct pointer_trackers *trackers, uint64_t time) trackers_velocity(struct pointer_trackers *trackers, uint64_t time)
{ {
const double MAX_VELOCITY_DIFF = v_ms2us(1); /* units/us */ const double MAX_VELOCITY_DIFF = v_ms2us(1); /* units/us */
struct pointer_tracker *tracker;
double velocity;
double result = 0.0; double result = 0.0;
double initial_velocity = 0.0; double initial_velocity = 0.0;
double velocity_diff;
unsigned int offset;
unsigned int dir = trackers_by_offset(trackers, 0)->dir; unsigned int dir = trackers_by_offset(trackers, 0)->dir;
/* Find least recent vector within a timelimit, maximum velocity diff /* Find least recent vector within a timelimit, maximum velocity diff
* and direction threshold. */ * and direction threshold. */
for (offset = 1; offset < trackers->ntrackers; offset++) { for (unsigned int offset = 1; offset < trackers->ntrackers; offset++) {
tracker = trackers_by_offset(trackers, offset); const struct pointer_tracker *tracker = trackers_by_offset(trackers, offset);
/* Bug: time running backwards */ /* Bug: time running backwards */
if (tracker->time > time) if (tracker->time > time)
@ -231,9 +227,9 @@ trackers_velocity(struct pointer_trackers *trackers, uint64_t time)
break; break;
} }
velocity = calculate_trackers_velocity(tracker, double velocity = calculate_trackers_velocity(tracker,
time, time,
trackers->smoothener); trackers->smoothener);
/* Stop if direction changed */ /* Stop if direction changed */
dir &= tracker->dir; dir &= tracker->dir;
@ -252,7 +248,7 @@ trackers_velocity(struct pointer_trackers *trackers, uint64_t time)
result = initial_velocity = velocity; result = initial_velocity = velocity;
} else { } else {
/* Stop if velocity differs too much from initial */ /* Stop if velocity differs too much from initial */
velocity_diff = fabs(initial_velocity - velocity); double velocity_diff = fabs(initial_velocity - velocity);
if (velocity_diff > MAX_VELOCITY_DIFF) if (velocity_diff > MAX_VELOCITY_DIFF)
break; break;