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Honor depth unit settings when plotting the depth profile

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This shows the depth properly in meter or feet depending on unit
selection.

It also changes the horizontal depth rulers to be at 10m/30ft intervals
rather than the previous 15ft.  With the textual depth markers, the
horizontal lines aren't as important any more.

Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
This commit is contained in:
Linus Torvalds 2011-09-07 09:21:26 -07:00
parent b5d3fa6023
commit fdbd80a3a2
1 changed files with 33 additions and 13 deletions
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46
profile.c
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@ -22,9 +22,11 @@ static int round_seconds_up(int seconds)
return MAX(30*60, ROUND_UP(seconds, 60*10));
}
static int round_feet_up(int feet)
static int round_depth_up(depth_t depth)
{
return MAX(90, ROUND_UP(feet+5, 15));
unsigned mm = depth.mm;
/* Minimum 30m */
return MAX(30000, ROUND_UP(mm+3000, 10000));
}
typedef struct {
@ -124,7 +126,7 @@ static void plot_depth_text(struct dive *dive, cairo_t *cr,
/* Get plot scaling limits */
maxtime = round_seconds_up(dive->duration.seconds);
maxdepth = round_feet_up(to_feet(dive->maxdepth));
maxdepth = round_depth_up(dive->maxdepth);
scalex = maxtime;
scaley = maxdepth;
@ -136,9 +138,22 @@ static void plot_depth_text(struct dive *dive, cairo_t *cr,
text_render_options_t tro = {1.0, 0.2, 0.2, CENTER};
struct sample *sample = dive->sample+i;
int sec = sample->time.seconds;
int depth = to_feet(sample->depth);
depth_t depth = sample->depth;
const char *fmt;
double d;
plot_text(cr, &tro, SCALE(sec, depth), "%d ft", depth);
switch (output_units.length) {
case METERS:
d = depth.mm / 1000.0;
fmt = "%.1f";
break;
case FEET:
d = to_feet(depth);
fmt = "%.0f";
break;
}
plot_text(cr, &tro, SCALE(sec, depth.mm), fmt, d);
i = next_minmax(dive, i, 0);
if (!i)
break;
@ -152,7 +167,7 @@ static void plot_depth_profile(struct dive *dive, cairo_t *cr,
int begins, sec, depth;
int i, samples;
struct sample *sample;
int maxtime, maxdepth;
int maxtime, maxdepth, marker;
samples = dive->samples;
if (!samples)
@ -162,7 +177,7 @@ static void plot_depth_profile(struct dive *dive, cairo_t *cr,
/* Get plot scaling limits */
maxtime = round_seconds_up(dive->duration.seconds);
maxdepth = round_feet_up(to_feet(dive->maxdepth));
maxdepth = round_depth_up(dive->maxdepth);
/* Time markers: every 5 min */
scalex = maxtime;
@ -172,11 +187,16 @@ static void plot_depth_profile(struct dive *dive, cairo_t *cr,
cairo_line_to(cr, SCALE(i, 1));
}
/* Depth markers: every 15 ft */
/* Depth markers: every 30 ft or 10 m*/
scalex = 1.0;
scaley = maxdepth;
switch (output_units.length) {
case METERS: marker = 10000; break;
case FEET: marker = 9144; break; /* 30 ft */
}
cairo_set_source_rgba(cr, 1, 1, 1, 0.5);
for (i = 15; i < maxdepth; i += 15) {
for (i = marker; i < maxdepth; i += marker) {
cairo_move_to(cr, SCALE(0, i));
cairo_line_to(cr, SCALE(1, i));
}
@ -184,8 +204,8 @@ static void plot_depth_profile(struct dive *dive, cairo_t *cr,
/* Show mean depth */
cairo_set_source_rgba(cr, 1, 0.2, 0.2, 0.40);
cairo_move_to(cr, SCALE(0, to_feet(dive->meandepth)));
cairo_line_to(cr, SCALE(1, to_feet(dive->meandepth)));
cairo_move_to(cr, SCALE(0, dive->meandepth.mm));
cairo_line_to(cr, SCALE(1, dive->meandepth.mm));
cairo_stroke(cr);
scalex = maxtime;
@ -193,12 +213,12 @@ static void plot_depth_profile(struct dive *dive, cairo_t *cr,
sample = dive->sample;
cairo_set_source_rgba(cr, 1, 0.2, 0.2, 0.80);
begins = sample->time.seconds;
cairo_move_to(cr, SCALE(sample->time.seconds, to_feet(sample->depth)));
cairo_move_to(cr, SCALE(sample->time.seconds, sample->depth.mm));
for (i = 1; i < dive->samples; i++) {
sample++;
sec = sample->time.seconds;
if (sec <= maxtime) {
depth = to_feet(sample->depth);
depth = sample->depth.mm;
cairo_line_to(cr, SCALE(sec, depth));
}
}