mifr/subsurface
1
0
Fork 0
mirror of https://github.com/subsurface/subsurface.git synced 2025-02-19 22:16:15 +00:00
Code Issues Projects Releases Packages Wiki Activity

Tweak the "show depth in text" heuristic a bit

Browse source 
Use a 10-minute window *or* when the depth has reversed sufficiently to
make the max we've found interesting.

Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Linus Torvalds 2011-09-06 12:16:39 -07:00
parent 3b67a3ecb4
commit c0a429457a
1 changed files with 21 additions and 7 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

28
profile.c
View file

@ -52,9 +52,15 @@ static void plot_text(cairo_t *cr, double x, double y, const char *fmt, ...)
cairo_show_text(cr, buffer); cairo_show_text(cr, buffer);
} }
/* Find the next maximum point in a 5-minute window */ /*
static int next_minmax(struct dive *dive, int index, int max) * Find the next maximum point in a 10-minute window.
*
* We exit early if we hit "enough" of a depth reversal,
* which is roughly 10 feet.
*/
static int next_minmax(struct dive *dive, int index, int minmax)
{ {
const int enough = 3000;
int timelimit, depthlimit, result; int timelimit, depthlimit, result;
struct sample *sample = dive->sample + index; struct sample *sample = dive->sample + index;
@ -76,17 +82,25 @@ static int next_minmax(struct dive *dive, int index, int max)
depth = sample->depth.mm; depth = sample->depth.mm;
if (time > timelimit) if (time > timelimit)
break; break;
if (max) {
if (depth <= depthlimit) if (minmax) {
if (depth <= depthlimit) {
if (depthlimit - depth > enough)
break;
continue; continue;
}
} else { } else {
if (depth >= depthlimit) if (depth >= depthlimit) {
if (depth - depthlimit > enough)
break;
continue; continue;
}
} }
depthlimit = depth;
timelimit = time + 300;
result = index; result = index;
depthlimit = depth;
/* Look up to ten minutes into the future */
timelimit = time + 600;
} }
return result; return result;
} }