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Improve visual appearance of temperature plot

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Prervent tiny temperature changes from being exaggerated in the plot.

Also, shift pressure plot around a bit (if necessary) to prevent it from
ending in the same space as the temperature plato on the profile graph.

Signed-off-by: Dirk Hohndel <dirk@hohndel.org>
This commit is contained in:
Dirk Hohndel 2012-11-12 18:46:14 -08:00
parent 05b55542c8
commit 79798dc15b
1 changed files with 17 additions and 8 deletions
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25
profile.c
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@ -33,8 +33,9 @@ struct plot_info {
int nr;
int maxtime;
int meandepth, maxdepth;
int maxpressure;
int mintemp, maxtemp;
int endpressure, maxpressure;
int mintemp, maxtemp, endtemp;
double endtempcoord;
struct plot_data {
unsigned int same_cylinder:1;
unsigned int cylinderindex;
@ -1050,16 +1051,16 @@ static int setup_temperature_limits(struct graphics_context *gc, struct plot_inf
/* Show temperatures in roughly the lower third, but make sure the scale
is at least somewhat reasonable */
delta = maxtemp - mintemp;
if (delta > 3000) /* more than 3K in fluctuation */
gc->topy = maxtemp + delta*2;
else
gc->topy = maxtemp + 1500 + delta*2;
if (delta < 3000) /* less than 3K in fluctuation */
delta = 3000;
gc->topy = maxtemp + delta*2;
if (GRAPHS_ENABLED)
gc->bottomy = mintemp - delta * 2;
else
gc->bottomy = mintemp - delta / 2;
gc->bottomy = mintemp - delta / 3;
pi->endtempcoord = SCALEY(gc, pi->endtemp);
return maxtemp > mintemp;
}
@ -1151,7 +1152,13 @@ static int get_cylinder_pressure_range(struct graphics_context *gc, struct plot_
else
gc->bottomy = 0;
gc->topy = pi->maxpressure * 1.5;
return pi->maxpressure != 0;
if (!pi->maxpressure)
return FALSE;
while (pi->endtempcoord <= SCALEY(gc, pi->endpressure - (gc->topy) * 0.1))
gc->bottomy -= gc->topy * 0.1;
return TRUE;
}
/* set the color for the pressure plot according to temporary sac rate
@ -1395,6 +1402,7 @@ static struct plot_info *analyze_plot_info(struct plot_info *pi)
if (pressure) {
if (pressure > pi->maxpressure)
pi->maxpressure = pressure;
pi->endpressure = pressure;
}
if (temperature) {
@ -1402,6 +1410,7 @@ static struct plot_info *analyze_plot_info(struct plot_info *pi)
pi->mintemp = temperature;
if (temperature > pi->maxtemp)
pi->maxtemp = temperature;
pi->endtemp = temperature;
}
}