struct plot_info {
int nr;
int maxtime;
+ int maxdepth;
+ int minpressure, maxpressure;
+ int mintemp, maxtemp;
struct plot_data {
int sec;
+ int pressure, temperature;
+ /* Depth info */
int val;
int smoothed;
struct plot_data *min[3];
cairo_stroke(cr);
}
-static int setup_temperature_limits(struct dive *dive, struct graphics_context *gc, struct plot_info *pi)
+static int setup_temperature_limits(struct graphics_context *gc, struct plot_info *pi)
{
- int i;
int maxtime, mintemp, maxtemp;
/* Get plot scaling limits */
maxtime = get_maxtime(pi);
- mintemp = INT_MAX;
- maxtemp = 0;
- for (i = 0; i < dive->samples; i++) {
- struct sample *sample = dive->sample+i;
- int mkelvin = sample->temperature.mkelvin;
- if (!mkelvin)
- continue;
- if (mkelvin > maxtemp)
- maxtemp = mkelvin;
- if (mkelvin < mintemp)
- mintemp = mkelvin;
- }
+ mintemp = pi->mintemp;
+ maxtemp = pi->maxtemp;
gc->leftx = 0; gc->rightx = maxtime;
/* Show temperatures in roughly the lower third */
return maxtemp > mintemp;
}
-static void plot_single_temp_text(struct graphics_context *gc, int sec, temperature_t temperature)
+static void plot_single_temp_text(struct graphics_context *gc, int sec, int mkelvin)
{
int deg;
const char *unit;
static const text_render_options_t tro = {12, 0.2, 0.2, 1.0, LEFT, TOP};
+ temperature_t temperature = { mkelvin };
if (output_units.temperature == FAHRENHEIT) {
deg = to_F(temperature);
plot_text(gc, &tro, sec, temperature.mkelvin, "%d %s", deg, unit);
}
-static void plot_temperature_text(struct dive *dive, struct graphics_context *gc,
- struct plot_info *pi)
+static void plot_temperature_text(struct graphics_context *gc, struct plot_info *pi)
{
int i;
int last = 0;
- temperature_t last_temperature, last_printed_temp;
+ int last_temperature = 0, last_printed_temp = 0;
- if (!setup_temperature_limits(dive, gc, pi))
+ if (!setup_temperature_limits(gc, pi))
return;
- for (i = 0; i < dive->samples; i++) {
- struct sample *sample = dive->sample+i;
- if (sample->time.seconds > dive->duration.seconds)
- break; /* let's not plot surface temp events */
- int mkelvin = sample->temperature.mkelvin;
+ for (i = 0; i < pi->nr; i++) {
int sec;
+ struct plot_data *entry = pi->entry+i;
+ int mkelvin = entry->temperature;
+
if (!mkelvin)
continue;
- last_temperature = sample->temperature;
- sec = sample->time.seconds;
- if (sec < last)
+ last_temperature = mkelvin;
+ sec = entry->sec;
+ if (sec < last + 300)
continue;
- last = sec + 300;
- plot_single_temp_text(gc,sec,sample->temperature);
- last_printed_temp = last_temperature ;
+ last = sec;
+ plot_single_temp_text(gc,sec,mkelvin);
+ last_printed_temp = mkelvin;
}
/* it would be nice to print the end temperature, if it's different */
- if (last_temperature.mkelvin != last_printed_temp.mkelvin) {
- plot_single_temp_text(gc,dive->duration.seconds,last_temperature);
- }
+ if (last_temperature != last_printed_temp)
+ plot_single_temp_text(gc, last, last_temperature);
}
static void plot_temperature_profile(struct dive *dive, struct graphics_context *gc,
cairo_t *cr = gc->cr;
int last = 0;
- if (!setup_temperature_limits(dive, gc, pi))
+ if (!setup_temperature_limits(gc, pi))
return;
set_source_rgba(gc, 0.2, 0.2, 1.0, 0.8);
int i;
int nr = pi->nr;
+ /* Do pressure min/max based on the non-surface data */
+ for (i = 0; i < nr; i++) {
+ struct plot_data *entry = pi->entry+i;
+ int pressure = entry->pressure;
+ int temperature = entry->temperature;
+
+ if (pressure) {
+ if (!pi->minpressure || pressure < pi->minpressure)
+ pi->minpressure = pressure;
+ if (pressure > pi->maxpressure)
+ pi->maxpressure = pressure;
+ }
+
+ if (temperature) {
+ if (!pi->mintemp || temperature < pi->mintemp)
+ pi->mintemp = temperature;
+ if (temperature > pi->maxtemp)
+ pi->maxtemp = temperature;
+ }
+ }
+
/* Smoothing function: 5-point triangular smooth */
for (i = 2; i < nr-2; i++) {
struct plot_data *entry = pi->entry+i;
* sides, so that you can do end-points without having to worry
* about it.
*/
-static struct plot_info *depth_plot_info(struct dive *dive)
+static struct plot_info *create_plot_info(struct dive *dive)
{
- int lastdepth, maxtime;
+ int lastdepth, lastindex;
int i, nr = dive->samples + 4, sec;
size_t alloc_size = plot_info_size(nr);
struct plot_info *pi;
memset(pi, 0, alloc_size);
pi->nr = nr;
sec = 0;
- maxtime = 0;
+ lastindex = 0;
lastdepth = -1;
for (i = 0; i < dive->samples; i++) {
int depth;
sec = entry->sec = sample->time.seconds;
depth = entry->val = sample->depth.mm;
+ entry->pressure = sample->cylinderpressure.mbar;
+ entry->temperature = sample->temperature.mkelvin;
+
if (depth || lastdepth)
- maxtime = sec;
+ lastindex = i+2;
+
lastdepth = depth;
+ if (depth > pi->maxdepth)
+ pi->maxdepth = depth;
}
if (lastdepth)
- maxtime = sec + 20;
+ lastindex = i + 2;
/* Fill in the last two entries with empty values but valid times */
i = dive->samples + 2;
pi->entry[i].sec = sec + 20;
pi->entry[i+1].sec = sec + 40;
- pi->maxtime = maxtime;
+
+ pi->nr = lastindex+1;
+ pi->maxtime = pi->entry[lastindex].sec;
return analyze_plot_info(pi);
}
void plot(struct graphics_context *gc, int w, int h, struct dive *dive)
{
double topx, topy;
- struct plot_info *pi = depth_plot_info(dive);
+ struct plot_info *pi = create_plot_info(dive);
topx = w / 20.0;
topy = h / 20.0;
plot_depth_profile(dive, gc, pi);
/* Text on top of all graphs.. */
- plot_temperature_text(dive, gc, pi);
+ plot_temperature_text(gc, pi);
plot_depth_text(dive, gc, pi);
plot_cylinder_pressure_text(dive, gc, pi);
projects / ext / subsurface.git / blobdiff