int mintemp, maxtemp;
struct plot_data {
unsigned int same_cylinder:1;
+ unsigned int cylinderindex;
int sec;
- int pressure, temperature;
+ /* pressure[0] is sensor pressure
+ * pressure[1] is interpolated pressure */
+ int pressure[2];
+ int temperature;
/* Depth info */
- int val;
+ int depth;
int smoothed;
velocity_t velocity;
struct plot_data *min[3];
int avg[3];
} entry[];
};
+#define SENSOR_PR 0
+#define INTERPOLATED_PR 1
+#define SENSOR_PRESSURE(_entry) (_entry)->pressure[SENSOR_PR]
+#define INTERPOLATED_PRESSURE(_entry) (_entry)->pressure[INTERPOLATED_PR]
/* convert velocity to colors */
typedef struct { double r, g, b; } rgb_t;
#define ROUND_UP(x,y) ((((x)+(y)-1)/(y))*(y))
+/* debugging tool - not normally used */
+static void dump_pi (struct plot_info *pi)
+{
+ int i;
+
+ printf("pi:{nr:%d maxtime:%d meandepth:%d maxdepth:%d \n"
+ " minpressure:%d maxpressure:%d endpressure:%d mintemp:%d maxtemp:%d\n",
+ pi->nr, pi->maxtime, pi->meandepth, pi->maxdepth,
+ pi->minpressure, pi->maxpressure, pi->endpressure, pi->mintemp, pi->maxtemp);
+ for (i = 0; i < pi->nr; i++)
+ printf(" entry[%d]:{same_cylinder:%d cylinderindex:%d sec:%d pressure:{%d,%d}\n"
+ " temperature:%d depth:%d smoothed:%d}\n",
+ i, pi->entry[i].same_cylinder, pi->entry[i].cylinderindex, pi->entry[i].sec,
+ pi->entry[i].pressure[0], pi->entry[i].pressure[1],
+ pi->entry[i].temperature, pi->entry[i].depth, pi->entry[i].smoothed);
+ printf(" }\n");
+}
+
/*
* When showing dive profiles, we scale things to the
* current dive. However, we don't scale past less than
cairo_show_text(cr, buffer);
}
+struct ev_select {
+ char *ev_name;
+ gboolean plot_ev;
+};
+static struct ev_select *ev_namelist;
+static int evn_allocated;
+static int evn_used;
+
+void evn_foreach(void (*callback)(const char *, int *, void *), void *data)
+{
+ int i;
+
+ for (i = 0; i < evn_used; i++) {
+ callback(ev_namelist[i].ev_name, &ev_namelist[i].plot_ev, data);
+ }
+}
+
+void remember_event(const char *eventname)
+{
+ int i=0, len;
+
+ if (!eventname || (len = strlen(eventname)) == 0)
+ return;
+ while (i < evn_used) {
+ if (!strncmp(eventname,ev_namelist[i].ev_name,len))
+ return;
+ i++;
+ }
+ if (evn_used == evn_allocated) {
+ evn_allocated += 10;
+ ev_namelist = realloc(ev_namelist, evn_allocated * sizeof(struct ev_select));
+ if (! ev_namelist)
+ /* we are screwed, but let's just bail out */
+ return;
+ }
+ ev_namelist[evn_used].ev_name = strdup(eventname);
+ ev_namelist[evn_used].plot_ev = TRUE;
+ evn_used++;
+}
+
static void plot_one_event(struct graphics_context *gc, struct plot_info *pi, struct event *event, const text_render_options_t *tro)
{
int i, depth = 0;
int x,y;
+ /* is plotting this event disabled? */
+ if (event->name) {
+ for (i = 0; i < evn_used; i++) {
+ if (! strcmp(event->name, ev_namelist[i].ev_name)) {
+ if (ev_namelist[i].plot_ev)
+ break;
+ else
+ return;
+ }
+ }
+ }
for (i = 0; i < pi->nr; i++) {
struct plot_data *data = pi->entry + i;
if (event->time.seconds < data->sec)
break;
- depth = data->val;
+ depth = data->depth;
}
/* draw a little tirangular marker and attach tooltip */
x = SCALEX(gc, event->time.seconds);
int sec = entry->sec, decimals;
double d;
- d = get_depth_units(entry->val, &decimals, NULL);
+ d = get_depth_units(entry->depth, &decimals, NULL);
- plot_text(gc, tro, sec, entry->val, "%.*f", decimals, d);
+ plot_text(gc, tro, sec, entry->depth, "%.*f", decimals, d);
}
static void plot_text_samples(struct graphics_context *gc, struct plot_info *pi)
static const text_render_options_t deep = {14, 1.0, 0.2, 0.2, CENTER, TOP};
static const text_render_options_t shallow = {14, 1.0, 0.2, 0.2, CENTER, BOTTOM};
int i;
+ int last = -1;
for (i = 0; i < pi->nr; i++) {
struct plot_data *entry = pi->entry + i;
- if (entry->val < 2000)
+ if (entry->depth < 2000)
continue;
- if (entry == entry->max[2])
+ if ((entry == entry->max[2]) && entry->depth != last) {
render_depth_sample(gc, entry, &deep);
+ last = entry->depth;
+ }
- if (entry == entry->min[2])
+ if ((entry == entry->min[2]) && entry->depth != last) {
render_depth_sample(gc, entry, &shallow);
+ last = entry->depth;
+ }
+
+ if (entry->depth != last)
+ last = -1;
}
}
struct plot_data *entry = pi->entry;
set_source_rgba(gc, 1, 0.2, 1, a);
- move_to(gc, entry->sec, entry->min[index]->val);
+ move_to(gc, entry->sec, entry->min[index]->depth);
for (i = 1; i < pi->nr; i++) {
entry++;
- line_to(gc, entry->sec, entry->min[index]->val);
+ line_to(gc, entry->sec, entry->min[index]->depth);
}
for (i = 1; i < pi->nr; i++) {
- line_to(gc, entry->sec, entry->max[index]->val);
+ line_to(gc, entry->sec, entry->max[index]->depth);
entry--;
}
cairo_close_path(gc->cr);
static void plot_depth_profile(struct graphics_context *gc, struct plot_info *pi)
{
- int i;
+ int i, incr;
cairo_t *cr = gc->cr;
int sec, depth;
struct plot_data *entry;
int maxtime, maxdepth, marker;
+ int increments[4] = { 5*60, 10*60, 15*60, 30*60 };
/* Get plot scaling limits */
maxtime = get_maxtime(pi);
maxdepth = get_maxdepth(pi);
- /* Time markers: every 5 min */
+ /* Time markers: at most every 5 min, but no more than 12 markers
+ * and for convenience we do 5, 10, 15 or 30 min intervals.
+ * This allows for 6h dives - enough (I hope) for even the craziest
+ * divers - but just in case, for those 8h depth-record-breaking dives,
+ * we double the interval if this still doesn't get us to 12 or fewer
+ * time markers */
+ i = 0;
+ while (maxtime / increments[i] > 12 && i < 4)
+ i++;
+ incr = increments[i];
+ while (maxtime / incr > 12)
+ incr *= 2;
+
gc->leftx = 0; gc->rightx = maxtime;
gc->topy = 0; gc->bottomy = 1.0;
- for (i = 5*60; i < maxtime; i += 5*60) {
+ set_source_rgba(gc, 1, 1, 1, 0.5);
+ for (i = incr; i < maxtime; i += incr) {
move_to(gc, i, 0);
line_to(gc, i, 1);
}
+ cairo_stroke(cr);
+
+ /* now the text on every second time marker */
+ text_render_options_t tro = {10, 0.2, 1.0, 0.2, CENTER, TOP};
+ for (i = incr; i < maxtime; i += 2 * incr)
+ plot_text(gc, &tro, i, 1, "%d", i/60);
/* Depth markers: every 30 ft or 10 m*/
gc->leftx = 0; gc->rightx = 1.0;
entry = pi->entry;
move_to(gc, 0, 0);
for (i = 0; i < pi->nr; i++, entry++)
- line_to(gc, entry->sec, entry->val);
+ line_to(gc, entry->sec, entry->depth);
cairo_close_path(gc->cr);
if (gc->printer) {
set_source_rgba(gc, 1, 1, 1, 0.2);
* representing the vertical velocity, so we need to
* chop this into short segments */
rgb_t color = rgb[entry->velocity];
- depth = entry->val;
+ depth = entry->depth;
set_source_rgb(gc, color.r, color.g, color.b);
- move_to(gc, entry[-1].sec, entry[-1].val);
+ move_to(gc, entry[-1].sec, entry[-1].depth);
line_to(gc, sec, depth);
cairo_stroke(cr);
}
static void plot_single_temp_text(struct graphics_context *gc, int sec, int mkelvin)
{
- int deg;
+ double 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);
- unit = UTF8_DEGREE "F";
- } else {
- deg = to_C(temperature);
- unit = UTF8_DEGREE "C";
- }
- plot_text(gc, &tro, sec, temperature.mkelvin, "%d%s", deg, unit);
+ deg = get_temp_units(mkelvin, &unit);
+
+ plot_text(gc, &tro, sec, mkelvin, "%d%s", (int)(deg + 0.5), unit);
}
static void plot_temperature_text(struct graphics_context *gc, struct plot_info *pi)
return pi->maxpressure != 0;
}
-static void plot_cylinder_pressure(struct graphics_context *gc, struct plot_info *pi)
+static void plot_pressure_helper(struct graphics_context *gc, struct plot_info *pi, int type)
{
int i;
- int have_pressure = FALSE;
-
- if (!get_cylinder_pressure_range(gc, pi))
- return;
-
- set_source_rgba(gc, 0.2, 1.0, 0.2, 0.80);
+ int lift_pen = FALSE;
for (i = 0; i < pi->nr; i++) {
int mbar;
struct plot_data *entry = pi->entry + i;
- mbar = entry->pressure;
- if (!mbar)
+ mbar = entry->pressure[type];
+ if (!entry->same_cylinder)
+ lift_pen = TRUE;
+ if (!mbar) {
+ lift_pen = TRUE;
continue;
- have_pressure = TRUE;
- if (entry->same_cylinder)
- line_to(gc, entry->sec, mbar);
+ }
+ if (lift_pen) {
+ if (i > 0 && entry->same_cylinder) {
+ /* if we have a previous event from the same tank,
+ * draw at least a short line .
+ * This uses the implementation detail that the
+ * type is either 0 or 1 */
+ int prev_pr;
+ prev_pr = (entry-1)->pressure[type] ? : (entry-1)->pressure[1 - type];
+ move_to(gc, (entry-1)->sec, prev_pr);
+ line_to(gc, entry->sec, mbar);
+ } else
+ move_to(gc, entry->sec, mbar);
+ lift_pen = FALSE;
+ }
else
- move_to(gc, 0, pi->maxpressure);
+ line_to(gc, entry->sec, mbar);
}
- /* if we have valid samples, we don't want to draw a line to the minpressure
- * but just end wherever the dive ended (think valve shutdowns during dive)
- * but that doesn't work so well if we have only max and min
- */
- if (! have_pressure)
- line_to(gc, pi->maxtime, pi->minpressure);
cairo_stroke(gc->cr);
+
}
-static int mbar_to_PSI(int mbar)
+static void plot_cylinder_pressure(struct graphics_context *gc, struct plot_info *pi)
{
- pressure_t p = {mbar};
- return to_PSI(p);
+ if (!get_cylinder_pressure_range(gc, pi))
+ return;
+
+ /* first plot the pressure readings we have from the dive computer */
+ set_source_rgba(gc, 0.2, 1.0, 0.2, 0.80);
+ plot_pressure_helper(gc, pi, SENSOR_PR);
+
+ /* then, in a different color, the interpolated values */
+ set_source_rgba(gc, 1.0, 1.0, 0.2, 0.80);
+ plot_pressure_helper(gc, pi, INTERPOLATED_PR);
+}
+
+static void plot_pressure_value(struct graphics_context *gc, int mbar, int sec,
+ int xalign, int yalign)
+{
+ int pressure;
+ const char *unit;
+
+ pressure = get_pressure_units(mbar, &unit);
+ text_render_options_t tro = {10, 0.2, 1.0, 0.2, xalign, yalign};
+ plot_text(gc, &tro, sec, mbar, "%d %s", pressure, unit);
}
static void plot_cylinder_pressure_text(struct graphics_context *gc, struct plot_info *pi)
{
- if (get_cylinder_pressure_range(gc, pi)) {
- int start, end;
- const char *unit = "bar";
+ int i;
+ int mbar, cyl;
+ int seen_cyl[MAX_CYLINDERS] = { FALSE, };
+ int last_pressure[MAX_CYLINDERS] = { 0, };
+ int last_time[MAX_CYLINDERS] = { 0, };
+ struct plot_data *entry;
- switch (output_units.pressure) {
- case PASCAL:
- start = pi->maxpressure * 100;
- end = pi->endpressure * 100;
- unit = "pascal";
- break;
- case BAR:
- start = (pi->maxpressure + 500) / 1000;
- end = (pi->endpressure + 500) / 1000;
- unit = "bar";
- break;
- case PSI:
- start = mbar_to_PSI(pi->maxpressure);
- end = mbar_to_PSI(pi->endpressure);
- unit = "psi";
- break;
+ if (!get_cylinder_pressure_range(gc, pi))
+ return;
+
+ /* only loop over the actual events from the dive computer */
+ for (i = 2; i < pi->nr; i++) {
+ entry = pi->entry + i;
+
+ if (!entry->same_cylinder) {
+ cyl = entry->cylinderindex;
+ if (!seen_cyl[cyl]) {
+ mbar = SENSOR_PRESSURE(entry) ? : INTERPOLATED_PRESSURE(entry);
+ plot_pressure_value(gc, mbar, entry->sec, LEFT, BOTTOM);
+ seen_cyl[cyl] = TRUE;
+ }
+ if (i > 2) {
+ /* remember the last pressure and time of
+ * the previous cylinder */
+ cyl = (entry - 1)->cylinderindex;
+ last_pressure[cyl] =
+ SENSOR_PRESSURE(entry - 1) ? : INTERPOLATED_PRESSURE(entry - 1);
+ last_time[cyl] = (entry - 1)->sec;
+ }
}
+ }
+ cyl = entry->cylinderindex;
+ last_pressure[cyl] = SENSOR_PRESSURE(entry) ? : INTERPOLATED_PRESSURE(entry);
+ last_time[cyl] = entry->sec;
- text_render_options_t tro = {10, 0.2, 1.0, 0.2, LEFT, TOP};
- plot_text(gc, &tro, 0, pi->maxpressure, "%d %s", start, unit);
- plot_text(gc, &tro, pi->maxtime, pi->endpressure,
- "%d %s", end, unit);
+ for (cyl = 0; cyl < MAX_CYLINDERS; cyl++) {
+ if (last_time[cyl]) {
+ plot_pressure_value(gc, last_pressure[cyl], last_time[cyl], CENTER, TOP);
+ }
}
}
/* Then go forward until we hit an entry past the time */
min = max = p;
- avg = p->val;
+ avg = p->depth;
nr = 1;
while (++p < last) {
- int val = p->val;
+ int depth = p->depth;
if (p->sec > time + seconds)
break;
- avg += val;
+ avg += depth;
nr ++;
- if (val < min->val)
+ if (depth < min->depth)
min = p;
- if (val > max->val)
+ if (depth > max->depth)
max = p;
}
entry->min[index] = min;
/* 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 pressure = SENSOR_PRESSURE(entry) ? : INTERPOLATED_PRESSURE(entry);
int temperature = entry->temperature;
if (pressure) {
/* Smoothing function: 5-point triangular smooth */
for (i = 2; i < nr; i++) {
struct plot_data *entry = pi->entry+i;
- int val;
+ int depth;
if (i < nr-2) {
- val = entry[-2].val + 2*entry[-1].val + 3*entry[0].val + 2*entry[1].val + entry[2].val;
- entry->smoothed = (val+4) / 9;
+ depth = entry[-2].depth + 2*entry[-1].depth + 3*entry[0].depth + 2*entry[1].depth + entry[2].depth;
+ entry->smoothed = (depth+4) / 9;
}
/* vertical velocity in mm/sec */
/* Linus wants to smooth this - let's at least look at the samples that aren't FAST or CRAZY */
if (entry[0].sec - entry[-1].sec) {
- entry->velocity = velocity((entry[0].val - entry[-1].val) / (entry[0].sec - entry[-1].sec));
+ entry->velocity = velocity((entry[0].depth - entry[-1].depth) / (entry[0].sec - entry[-1].sec));
/* if our samples are short and we aren't too FAST*/
if (entry[0].sec - entry[-1].sec < 15 && entry->velocity < FAST) {
int past = -2;
while (i+past > 0 && entry[0].sec - entry[past].sec < 15)
past--;
- entry->velocity = velocity((entry[0].val - entry[past].val) /
+ entry->velocity = velocity((entry[0].depth - entry[past].depth) /
(entry[0].sec - entry[past].sec));
}
} else
return pi;
}
+/*
+ * simple structure to track the beginning and end tank pressure as
+ * well as the integral of depth over time spent while we have no
+ * pressure reading from the tank */
+typedef struct pr_track_struct pr_track_t;
+struct pr_track_struct {
+ int start;
+ int end;
+ int t_start;
+ int t_end;
+ double pressure_time;
+ pr_track_t *next;
+};
+
+static pr_track_t *pr_track_alloc(int start, int t_start) {
+ pr_track_t *pt = malloc(sizeof(pr_track_t));
+ pt->start = start;
+ pt->t_start = t_start;
+ pt->end = 0;
+ pt->t_end = 0;
+ pt->pressure_time = 0.0;
+ pt->next = NULL;
+ return pt;
+}
+
+/* poor man's linked list */
+static pr_track_t *list_last(pr_track_t *list)
+{
+ pr_track_t *tail = list;
+ if (!tail)
+ return NULL;
+ while (tail->next) {
+ tail = tail->next;
+ }
+ return tail;
+}
+
+static pr_track_t *list_add(pr_track_t *list, pr_track_t *element)
+{
+ pr_track_t *tail = list_last(list);
+ if (!tail)
+ return element;
+ tail->next = element;
+ return list;
+}
+
+static void list_free(pr_track_t *list)
+{
+ if (!list)
+ return;
+ list_free(list->next);
+ free(list);
+}
+
+static void fill_missing_tank_pressures(struct dive *dive, struct plot_info *pi,
+ pr_track_t **track_pr)
+{
+ pr_track_t *list = NULL;
+ pr_track_t *nlist = NULL;
+ double pt, magic;
+ int cyl, i;
+ struct plot_data *entry;
+ int cur_pr[MAX_CYLINDERS];
+
+ for (cyl = 0; cyl < MAX_CYLINDERS; cyl++) {
+ cur_pr[cyl] = track_pr[cyl]->start;
+ }
+
+ /* The first two are "fillers" */
+ for (i = 2; i < pi->nr; i++) {
+ entry = pi->entry + i;
+ if (SENSOR_PRESSURE(entry)) {
+ cur_pr[entry->cylinderindex] = SENSOR_PRESSURE(entry);
+ } else {
+ if(!list || list->t_end < entry->sec) {
+ nlist = track_pr[entry->cylinderindex];
+ list = NULL;
+ while (nlist && nlist->t_start <= entry->sec) {
+ list = nlist;
+ nlist = list->next;
+ }
+ /* there may be multiple segments - so
+ * let's assemble the length */
+ nlist = list;
+ pt = list->pressure_time;
+ while (!nlist->end) {
+ nlist = nlist->next;
+ if (!nlist) {
+ /* oops - we have no end pressure,
+ * so this means this is a tank without
+ * gas consumption information */
+ break;
+ }
+ pt += nlist->pressure_time;
+ }
+ if (!nlist) {
+ /* just continue without calculating
+ * interpolated values */
+ list = NULL;
+ continue;
+ }
+ magic = (nlist->end - cur_pr[entry->cylinderindex]) / pt; }
+ if (pt != 0.0) {
+ double cur_pt = (entry->sec - (entry-1)->sec) *
+ (1 + entry->depth / 10000.0);
+ INTERPOLATED_PRESSURE(entry) =
+ cur_pr[entry->cylinderindex] + cur_pt * magic;
+ cur_pr[entry->cylinderindex] = INTERPOLATED_PRESSURE(entry);
+ }
+ }
+ }
+}
+
+static int get_cylinder_index(struct dive *dive, struct event *ev)
+{
+ int i;
+
+ /*
+ * Try to find a cylinder that matches the O2 percentage
+ * in the gas change event 'value' field.
+ *
+ * Crazy suunto gas change events. We really should do
+ * this in libdivecomputer or something.
+ */
+ for (i = 0; i < MAX_CYLINDERS; i++) {
+ cylinder_t *cyl = dive->cylinder+i;
+ int o2 = (cyl->gasmix.o2.permille + 5) / 10;
+ if (o2 == ev->value)
+ return i;
+ }
+
+ return 0;
+}
+
+static struct event *get_next_gaschange(struct event *event)
+{
+ while (event) {
+ if (!strcmp(event->name, "gaschange"))
+ return event;
+ event = event->next;
+ }
+ return event;
+}
+
+static int set_cylinder_index(struct plot_info *pi, int i, int cylinderindex, unsigned int end)
+{
+ while (i < pi->nr) {
+ struct plot_data *entry = pi->entry+i;
+ if (entry->sec > end)
+ break;
+ if (entry->cylinderindex != cylinderindex) {
+ entry->cylinderindex = cylinderindex;
+ entry->pressure[0] = 0;
+ }
+ i++;
+ }
+ return i;
+}
+
+static void check_gas_change_events(struct dive *dive, struct plot_info *pi)
+{
+ int i = 0, cylinderindex = 0;
+ struct event *ev = get_next_gaschange(dive->events);
+
+ if (!ev)
+ return;
+
+ do {
+ i = set_cylinder_index(pi, i, cylinderindex, ev->time.seconds);
+ cylinderindex = get_cylinder_index(dive, ev);
+ ev = get_next_gaschange(ev->next);
+ } while (ev);
+ set_cylinder_index(pi, i, cylinderindex, ~0u);
+}
+
+/* for computers that track gas changes through events */
+static int count_gas_change_events(struct dive *dive)
+{
+ int count = 0;
+ struct event *ev = get_next_gaschange(dive->events);
+
+ while (ev) {
+ count++;
+ ev = get_next_gaschange(ev->next);
+ }
+ return count;
+}
+
/*
* Create a plot-info with smoothing and ranged min/max
*
* sides, so that you can do end-points without having to worry
* about it.
*/
-static struct plot_info *create_plot_info(struct dive *dive)
+static struct plot_info *create_plot_info(struct dive *dive, int nr_samples, struct sample *dive_sample)
{
int cylinderindex = -1;
int lastdepth, lastindex;
- int i, nr = dive->samples + 4, sec;
- size_t alloc_size = plot_info_size(nr);
+ int i, pi_idx, nr, sec, cyl;
+ size_t alloc_size;
struct plot_info *pi;
-
+ pr_track_t *track_pr[MAX_CYLINDERS] = {NULL, };
+ pr_track_t *pr_track, *current;
+ gboolean missing_pr = FALSE;
+ struct plot_data *entry = NULL;
+ struct event *ev;
+
+ /* we want to potentially add synthetic plot_info elements for the gas changes */
+ nr = nr_samples + 4 + 2 * count_gas_change_events(dive);
+ alloc_size = plot_info_size(nr);
pi = malloc(alloc_size);
if (!pi)
return pi;
memset(pi, 0, alloc_size);
pi->nr = nr;
+ pi_idx = 2; /* the two extra events at the start */
+ /* check for gas changes before the samples start */
+ ev = get_next_gaschange(dive->events);
+ while (ev && ev->time.seconds < dive_sample->time.seconds) {
+ entry = pi->entry + pi_idx;
+ entry->sec = ev->time.seconds;
+ entry->depth = 0; /* is that always correct ? */
+ pi_idx++;
+ ev = get_next_gaschange(ev->next);
+ }
+ if (ev && ev->time.seconds == dive_sample->time.seconds) {
+ /* we already have a sample at the time of the event */
+ ev = get_next_gaschange(ev->next);
+ }
sec = 0;
lastindex = 0;
lastdepth = -1;
- for (i = 0; i < dive->samples; i++) {
+ for (i = 0; i < nr_samples; i++) {
int depth;
- struct sample *sample = dive->sample+i;
- struct plot_data *entry = pi->entry + i + 2;
-
- sec = entry->sec = sample->time.seconds;
- depth = entry->val = sample->depth.mm;
-
- entry->same_cylinder = sample->cylinderindex == cylinderindex;
- cylinderindex = sample->cylinderindex;
- entry->pressure = sample->cylinderpressure.mbar;
+ int delay = 0;
+ struct sample *sample = dive_sample+i;
+
+ entry = pi->entry + i + pi_idx;
+ while (ev && ev->time.seconds < sample->time.seconds) {
+ /* insert two fake plot info structures for the end of
+ * the old tank and the start of the new tank */
+ entry->sec = ev->time.seconds;
+ (entry+1)->sec = ev->time.seconds + 1;
+ /* we need a fake depth - let's interpolate */
+ if (i) {
+ entry->depth = sample->depth.mm -
+ (sample->depth.mm - (sample-1)->depth.mm) / 2;
+ } else
+ entry->depth = sample->depth.mm;
+ (entry+1)->depth = entry->depth;
+ pi_idx += 2;
+ entry = pi->entry + i + pi_idx;
+ ev = get_next_gaschange(ev->next);
+ }
+ if (ev && ev->time.seconds == sample->time.seconds) {
+ /* we already have a sample at the time of the event
+ * just add a new one for the old tank and delay the
+ * real even by one second (to keep time monotonous) */
+ entry->sec = ev->time.seconds;
+ entry->depth = sample->depth.mm;
+ pi_idx++;
+ entry = pi->entry + i + pi_idx;
+ ev = get_next_gaschange(ev->next);
+ delay = 1;
+ }
+ sec = entry->sec = sample->time.seconds + delay;
+ depth = entry->depth = sample->depth.mm;
+ entry->cylinderindex = sample->cylinderindex;
+ SENSOR_PRESSURE(entry) = sample->cylinderpressure.mbar;
entry->temperature = sample->temperature.mkelvin;
if (depth || lastdepth)
- lastindex = i+2;
+ lastindex = i+pi_idx;
lastdepth = depth;
if (depth > pi->maxdepth)
pi->maxdepth = depth;
}
- if (lastdepth)
- lastindex = i + 2;
+ entry = pi->entry + i + pi_idx;
+ /* are there still unprocessed gas changes? that would be very strange */
+ while (ev) {
+ entry->sec = ev->time.seconds;
+ entry->depth = 0; /* why are there gas changes after the dive is over? */
+ pi_idx++;
+ entry = pi->entry + i + pi_idx;
+ ev = get_next_gaschange(ev->next);
+ }
+ nr_samples += pi_idx - 2;
+ check_gas_change_events(dive, pi);
+
+ for (cyl = 0; cyl < MAX_CYLINDERS; cyl++) /* initialize the start pressures */
+ track_pr[cyl] = pr_track_alloc(dive->cylinder[cyl].start.mbar, -1);
+ current = track_pr[pi->entry[2].cylinderindex];
+ for (i = 0; i < nr_samples; i++) {
+ entry = pi->entry + i + 2;
+
+ entry->same_cylinder = entry->cylinderindex == cylinderindex;
+ cylinderindex = entry->cylinderindex;
+
+ /* track the segments per cylinder and their pressure/time integral */
+ if (!entry->same_cylinder) {
+ current->end = SENSOR_PRESSURE(entry-1);
+ current->t_end = (entry-1)->sec;
+ current = pr_track_alloc(SENSOR_PRESSURE(entry), entry->sec);
+ track_pr[cylinderindex] = list_add(track_pr[cylinderindex], current);
+ } else { /* same cylinder */
+ if ((!SENSOR_PRESSURE(entry) && SENSOR_PRESSURE(entry-1)) ||
+ (SENSOR_PRESSURE(entry) && !SENSOR_PRESSURE(entry-1))) {
+ /* transmitter changed its working status */
+ current->end = SENSOR_PRESSURE(entry-1);
+ current->t_end = (entry-1)->sec;
+ current = pr_track_alloc(SENSOR_PRESSURE(entry), entry->sec);
+ track_pr[cylinderindex] =
+ list_add(track_pr[cylinderindex], current);
+ }
+ }
+ /* finally, do the discrete integration to get the SAC rate equivalent */
+ current->pressure_time += (entry->sec - (entry-1)->sec) *
+ (1 + entry->depth / 10000.0);
+ missing_pr |= !SENSOR_PRESSURE(entry);
+ }
+
+ if (entry)
+ current->t_end = entry->sec;
+
+ for (cyl = 0; cyl < MAX_CYLINDERS; cyl++) { /* initialize the end pressures */
+ int pr = dive->cylinder[cyl].end.mbar;
+ if (pr && track_pr[cyl]) {
+ pr_track = list_last(track_pr[cyl]);
+ pr_track->end = pr;
+ }
+ }
/* Fill in the last two entries with empty values but valid times */
- i = dive->samples + 2;
+ i = nr_samples + 2;
pi->entry[i].sec = sec + 20;
pi->entry[i+1].sec = sec + 40;
- if (cylinderindex >= 0) {
- pi->entry[i].pressure = dive->cylinder[cylinderindex].end.mbar;
- pi->entry[i].same_cylinder = 1;
- }
-
+ /* the number of actual entries - we may have allocated more if there
+ * were gas change events, but this is how many were filled */
pi->nr = lastindex+1;
pi->maxtime = pi->entry[lastindex].sec;
pi->meandepth = dive->meandepth.mm;
+ if (missing_pr) {
+ fill_missing_tank_pressures(dive, pi, track_pr);
+ }
+ for (cyl = 0; cyl < MAX_CYLINDERS; cyl++)
+ list_free(track_pr[cyl]);
+ if (0) /* awesome for debugging - not useful otherwise */
+ dump_pi(pi);
return analyze_plot_info(pi);
}
void plot(struct graphics_context *gc, cairo_rectangle_int_t *drawing_area, struct dive *dive)
{
- struct plot_info *pi = create_plot_info(dive);
+ struct plot_info *pi;
+ static struct sample fake[4];
+ struct sample *sample = dive->sample;
+ int nr = dive->samples;
+
+ if (!nr) {
+ int duration = dive->duration.seconds;
+ int maxdepth = dive->maxdepth.mm;
+ sample = fake;
+ fake[1].time.seconds = duration * 0.05;
+ fake[1].depth.mm = maxdepth;
+ fake[2].time.seconds = duration * 0.95;
+ fake[2].depth.mm = maxdepth;
+ fake[3].time.seconds = duration * 1.00;
+ nr = 4;
+ }
+
+ pi = create_plot_info(dive, nr, sample);
cairo_translate(gc->cr, drawing_area->x, drawing_area->y);
cairo_set_line_width(gc->cr, 2);
projects / ext / subsurface.git / blobdiff