+/* profile.c */
+/* creates all the necessary data for drawing the dive profile
+ * uses cairo to draw it
+ */
#include <stdio.h>
#include <stdlib.h>
#include <stdarg.h>
+#include <string.h>
#include <time.h>
#include "dive.h"
int selected_dive = 0;
-/*
- * Cairo scaling really is horribly horribly mis-designed.
- *
- * Which is sad, because I really like Cairo otherwise. But
- * the fact that the line width is scaled with the same scale
- * as the coordinate system is a f*&%ing disaster. So we
- * can't use it, and instead have this butt-ugly wrapper thing..
- */
-struct graphics_context {
- cairo_t *cr;
- double maxx, maxy;
- double scalex, scaley;
+typedef enum { STABLE, SLOW, MODERATE, FAST, CRAZY } velocity_t;
+/* Plot info with smoothing, velocity indication
+ * and one-, two- and three-minute minimums and maximums */
+struct plot_info {
+ int nr;
+ int maxtime;
+ int meandepth, maxdepth;
+ int minpressure, maxpressure;
+ int endpressure; /* start pressure better be max pressure */
+ int mintemp, maxtemp;
+ struct plot_data {
+ unsigned int same_cylinder:1;
+ unsigned int cylinderindex;
+ int sec;
+ /* pressure[0] is sensor pressure
+ * pressure[1] is interpolated pressure */
+ int pressure[2];
+ int temperature;
+ /* Depth info */
+ int depth;
+ int smoothed;
+ velocity_t velocity;
+ struct plot_data *min[3];
+ struct plot_data *max[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;
+static const rgb_t rgb[] = {
+ [STABLE] = {0.0, 0.4, 0.0},
+ [SLOW] = {0.4, 0.8, 0.0},
+ [MODERATE] = {0.8, 0.8, 0.0},
+ [FAST] = {0.8, 0.5, 0.0},
+ [CRAZY] = {1.0, 0.0, 0.0},
};
+#define plot_info_size(nr) (sizeof(struct plot_info) + (nr)*sizeof(struct plot_data))
+
/* Scale to 0,0 -> maxx,maxy */
-#define SCALE(gc,x,y) (x)*gc->maxx/gc->scalex,(y)*gc->maxy/gc->scaley
+#define SCALEX(gc,x) (((x)-gc->leftx)/(gc->rightx-gc->leftx)*gc->maxx)
+#define SCALEY(gc,y) (((y)-gc->topy)/(gc->bottomy-gc->topy)*gc->maxy)
+#define SCALE(gc,x,y) SCALEX(gc,x),SCALEY(gc,y)
static void move_to(struct graphics_context *gc, double x, double y)
{
cairo_line_to(gc->cr, SCALE(gc, x, y));
}
+static void set_source_rgba(struct graphics_context *gc, double r, double g, double b, double a)
+{
+ /*
+ * For printers, we still honor 'a', but ignore colors
+ * for now. Black is white and white is black
+ */
+ if (gc->printer) {
+ double sum = r+g+b;
+ if (sum > 0.8)
+ r = g = b = 0;
+ else
+ r = g = b = 1;
+ }
+ cairo_set_source_rgba(gc->cr, r, g, b, a);
+}
+
+void set_source_rgb(struct graphics_context *gc, double r, double g, double b)
+{
+ set_source_rgba(gc, r, g, b, 1);
+}
+
#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
* 30 minutes or 90 ft, just so that small dives show
* up as such.
+ * we also need to add 180 seconds at the end so the min/max
+ * plots correctly
*/
-static int round_seconds_up(int seconds)
+static int get_maxtime(struct plot_info *pi)
{
- return MAX(30*60, ROUND_UP(seconds, 60*10));
+ int seconds = pi->maxtime;
+ /* min 30 minutes, rounded up to 5 minutes, with at least 2.5 minutes to spare */
+ return MAX(30*60, ROUND_UP(seconds+150, 60*5));
}
-static int round_depth_up(depth_t depth)
+static int get_maxdepth(struct plot_info *pi)
{
- unsigned mm = depth.mm;
- /* Minimum 30m */
+ unsigned mm = pi->maxdepth;
+ /* Minimum 30m, rounded up to 10m, with at least 3m to spare */
return MAX(30000, ROUND_UP(mm+3000, 10000));
}
typedef struct {
+ int size;
double r,g,b;
- enum {CENTER,LEFT} halign;
- enum {MIDDLE,TOP,BOTTOM} valign;
+ double hpos, vpos;
} text_render_options_t;
-static void plot_text(struct graphics_context *gc, text_render_options_t *tro,
+#define RIGHT (-1.0)
+#define CENTER (-0.5)
+#define LEFT (0.0)
+
+#define TOP (1)
+#define MIDDLE (0)
+#define BOTTOM (-1)
+
+static void plot_text(struct graphics_context *gc, const text_render_options_t *tro,
double x, double y, const char *fmt, ...)
{
cairo_t *cr = gc->cr;
+ cairo_font_extents_t fe;
cairo_text_extents_t extents;
double dx, dy;
char buffer[80];
vsnprintf(buffer, sizeof(buffer), fmt, args);
va_end(args);
+ cairo_set_font_size(cr, tro->size);
+ cairo_font_extents(cr, &fe);
cairo_text_extents(cr, buffer, &extents);
- dx = 0;
- switch (tro->halign) {
- case CENTER:
- dx = -(extents.width/2 + extents.x_bearing);
- break;
- case LEFT:
- dx = 0;
- break;
- }
- switch (tro->valign) {
- case TOP:
- dy = extents.height * 1.2;
- break;
- case BOTTOM:
- dy = -extents.height * 0.8;
- break;
- case MIDDLE:
- dy = 0;
- break;
- }
+ dx = tro->hpos * extents.width + extents.x_bearing;
+ dy = tro->vpos * extents.height + fe.descent;
move_to(gc, x, y);
cairo_rel_move_to(cr, dx, dy);
cairo_text_path(cr, buffer);
- cairo_set_source_rgb(cr, 0, 0, 0);
+ set_source_rgb(gc, 0, 0, 0);
cairo_stroke(cr);
move_to(gc, x, y);
cairo_rel_move_to(cr, dx, dy);
- cairo_set_source_rgb(cr, tro->r, tro->g, tro->b);
+ set_source_rgb(gc, tro->r, tro->g, tro->b);
cairo_show_text(cr, buffer);
}
-/*
- * Find the next minimum/maximum point.
- *
- * We exit early if we hit "enough" of a depth reversal,
- * which is roughly 10 feet.
- */
-static struct sample *next_minmax(struct sample *sample, struct sample *end, int minmax)
-{
- const int enough = 3000;
- struct sample *result;
- int depthlimit;
+struct ev_select {
+ char *ev_name;
+ gboolean plot_ev;
+};
+static struct ev_select *ev_namelist;
+static int evn_allocated;
+static int evn_used;
- if (sample >= end)
- return 0;
+void evn_foreach(void (*callback)(const char *, int *, void *), void *data)
+{
+ int i;
- depthlimit = sample->depth.mm;
- result = NULL;
+ for (i = 0; i < evn_used; i++) {
+ callback(ev_namelist[i].ev_name, &ev_namelist[i].plot_ev, data);
+ }
+}
- for (;;) {
- int time, depth;
+void remember_event(const char *eventname)
+{
+ int i=0, len;
- sample++;
- if (sample >= end)
- return NULL;
- time = sample->time.seconds;
- depth = sample->depth.mm;
+ 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++;
+}
- if (minmax) {
- if (depth <= depthlimit) {
- if (depthlimit - depth > enough)
+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;
- continue;
- }
- } else {
- if (depth >= depthlimit) {
- if (depth - depthlimit > enough)
- break;
- continue;
+ 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->depth;
+ }
+ /* draw a little tirangular marker and attach tooltip */
+ x = SCALEX(gc, event->time.seconds);
+ y = SCALEY(gc, depth);
+ set_source_rgba(gc, 1.0, 1.0, 0.1, 0.8);
+ cairo_move_to(gc->cr, x-15, y+6);
+ cairo_line_to(gc->cr, x-3 , y+6);
+ cairo_line_to(gc->cr, x-9, y-6);
+ cairo_line_to(gc->cr, x-15, y+6);
+ cairo_stroke_preserve(gc->cr);
+ cairo_fill(gc->cr);
+ set_source_rgba(gc, 0.0, 0.0, 0.0, 0.8);
+ cairo_move_to(gc->cr, x-9, y-3);
+ cairo_line_to(gc->cr, x-9, y+1);
+ cairo_move_to(gc->cr, x-9, y+4);
+ cairo_line_to(gc->cr, x-9, y+4);
+ cairo_stroke(gc->cr);
+ attach_tooltip(x-15, y-6, 12, 12, event->name);
+}
+
+static void plot_events(struct graphics_context *gc, struct plot_info *pi, struct dive *dive)
+{
+ static const text_render_options_t tro = {14, 1.0, 0.2, 0.2, CENTER, TOP};
+ struct event *event = dive->events;
- result = sample;
- depthlimit = depth;
+ if (gc->printer)
+ return;
+
+ while (event) {
+ plot_one_event(gc, pi, event, &tro);
+ event = event->next;
}
- return result;
}
-static void render_depth_sample(struct graphics_context *gc, struct sample *sample)
+static void render_depth_sample(struct graphics_context *gc, struct plot_data *entry, const text_render_options_t *tro)
{
- text_render_options_t tro = {1.0, 0.2, 0.2, CENTER, TOP};
- int sec = sample->time.seconds;
- depth_t depth = sample->depth;
- const char *fmt;
+ int sec = entry->sec, decimals;
double d;
- 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(gc, &tro, sec, depth.mm, fmt, d);
+ d = get_depth_units(entry->depth, &decimals, NULL);
+
+ plot_text(gc, tro, sec, entry->depth, "%.*f", decimals, d);
}
-static void plot_text_samples(struct graphics_context *gc, struct sample *a, struct sample *b)
+static void plot_text_samples(struct graphics_context *gc, struct plot_info *pi)
{
- for (;;) {
- if (b <= a)
- break;
- a = next_minmax(a, b, 1);
- if (!a)
- return;
- render_depth_sample(gc, a);
- a = next_minmax(a, b, 0);
- if (!a)
- break;
+ 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->depth < 2000)
+ continue;
+
+ if ((entry == entry->max[2]) && entry->depth != last) {
+ render_depth_sample(gc, entry, &deep);
+ last = entry->depth;
+ }
+
+ if ((entry == entry->min[2]) && entry->depth != last) {
+ render_depth_sample(gc, entry, &shallow);
+ last = entry->depth;
+ }
+
+ if (entry->depth != last)
+ last = -1;
}
}
-static void plot_depth_text(struct dive *dive, struct graphics_context *gc)
+static void plot_depth_text(struct graphics_context *gc, struct plot_info *pi)
{
- struct sample *sample, *end;
int maxtime, maxdepth;
/* Get plot scaling limits */
- maxtime = round_seconds_up(dive->duration.seconds);
- maxdepth = round_depth_up(dive->maxdepth);
+ maxtime = get_maxtime(pi);
+ maxdepth = get_maxdepth(pi);
- gc->scalex = maxtime;
- gc->scaley = maxdepth;
+ gc->leftx = 0; gc->rightx = maxtime;
+ gc->topy = 0; gc->bottomy = maxdepth;
- cairo_set_font_size(gc->cr, 14);
+ plot_text_samples(gc, pi);
+}
- sample = dive->sample;
- end = dive->sample + dive->samples;
+static void plot_smoothed_profile(struct graphics_context *gc, struct plot_info *pi)
+{
+ int i;
+ struct plot_data *entry = pi->entry;
- plot_text_samples(gc, sample, end);
+ set_source_rgba(gc, 1, 0.2, 0.2, 0.20);
+ move_to(gc, entry->sec, entry->smoothed);
+ for (i = 1; i < pi->nr; i++) {
+ entry++;
+ line_to(gc, entry->sec, entry->smoothed);
+ }
+ cairo_stroke(gc->cr);
}
-static void plot_depth_profile(struct dive *dive, struct graphics_context *gc)
+static void plot_minmax_profile_minute(struct graphics_context *gc, struct plot_info *pi,
+ int index, double a)
{
- cairo_t *cr = gc->cr;
- int begins, sec, depth;
- int i, samples;
- struct sample *sample;
- int maxtime, maxdepth, marker;
+ int i;
+ struct plot_data *entry = pi->entry;
- samples = dive->samples;
- if (!samples)
+ set_source_rgba(gc, 1, 0.2, 1, a);
+ 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]->depth);
+ }
+ for (i = 1; i < pi->nr; i++) {
+ line_to(gc, entry->sec, entry->max[index]->depth);
+ entry--;
+ }
+ cairo_close_path(gc->cr);
+ cairo_fill(gc->cr);
+}
+
+static void plot_minmax_profile(struct graphics_context *gc, struct plot_info *pi)
+{
+ if (gc->printer)
return;
+ plot_minmax_profile_minute(gc, pi, 2, 0.1);
+ plot_minmax_profile_minute(gc, pi, 1, 0.1);
+ plot_minmax_profile_minute(gc, pi, 0, 0.1);
+}
- cairo_set_line_width(gc->cr, 2);
+static void plot_depth_profile(struct graphics_context *gc, struct plot_info *pi)
+{
+ 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 = round_seconds_up(dive->duration.seconds);
- maxdepth = round_depth_up(dive->maxdepth);
-
- /* Time markers: every 5 min */
- gc->scalex = maxtime;
- gc->scaley = 1.0;
- for (i = 5*60; i < maxtime; i += 5*60) {
+ maxtime = get_maxtime(pi);
+ maxdepth = get_maxdepth(pi);
+
+ /* 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;
+ 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->scalex = 1.0;
- gc->scaley = maxdepth;
+ gc->leftx = 0; gc->rightx = 1.0;
+ gc->topy = 0; gc->bottomy = 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);
+ set_source_rgba(gc, 1, 1, 1, 0.5);
for (i = marker; i < maxdepth; i += marker) {
move_to(gc, 0, i);
line_to(gc, 1, i);
cairo_stroke(cr);
/* Show mean depth */
- cairo_set_source_rgba(cr, 1, 0.2, 0.2, 0.40);
- move_to(gc, 0, dive->meandepth.mm);
- line_to(gc, 1, dive->meandepth.mm);
- cairo_stroke(cr);
+ if (! gc->printer) {
+ set_source_rgba(gc, 1, 0.2, 0.2, 0.40);
+ move_to(gc, 0, pi->meandepth);
+ line_to(gc, 1, pi->meandepth);
+ cairo_stroke(cr);
+ }
- gc->scalex = maxtime;
-
- sample = dive->sample;
- cairo_set_source_rgba(cr, 1, 0.2, 0.2, 0.80);
- begins = sample->time.seconds;
- move_to(gc, sample->time.seconds, sample->depth.mm);
- for (i = 1; i < dive->samples; i++) {
- sample++;
- sec = sample->time.seconds;
- if (sec <= maxtime) {
- depth = sample->depth.mm;
- line_to(gc, sec, depth);
- }
+ gc->leftx = 0; gc->rightx = maxtime;
+
+ /*
+ * These are good for debugging text placement etc,
+ * but not for actual display..
+ */
+ if (0) {
+ plot_smoothed_profile(gc, pi);
+ plot_minmax_profile(gc, pi);
+ }
+
+ set_source_rgba(gc, 1, 0.2, 0.2, 0.80);
+
+ /* Do the depth profile for the neat fill */
+ gc->topy = 0; gc->bottomy = maxdepth;
+ set_source_rgba(gc, 1, 0.2, 0.2, 0.20);
+
+ entry = pi->entry;
+ move_to(gc, 0, 0);
+ for (i = 0; i < pi->nr; i++, entry++)
+ line_to(gc, entry->sec, entry->depth);
+ cairo_close_path(gc->cr);
+ if (gc->printer) {
+ set_source_rgba(gc, 1, 1, 1, 0.2);
+ cairo_fill_preserve(cr);
+ set_source_rgb(gc, 1, 1, 1);
+ cairo_stroke(cr);
+ return;
+ }
+ cairo_fill(gc->cr);
+
+ /* Now do it again for the velocity colors */
+ entry = pi->entry;
+ for (i = 1; i < pi->nr; i++) {
+ entry++;
+ sec = entry->sec;
+ /* we want to draw the segments in different colors
+ * representing the vertical velocity, so we need to
+ * chop this into short segments */
+ rgb_t color = rgb[entry->velocity];
+ depth = entry->depth;
+ set_source_rgb(gc, color.r, color.g, color.b);
+ move_to(gc, entry[-1].sec, entry[-1].depth);
+ line_to(gc, sec, depth);
+ cairo_stroke(cr);
}
- gc->scaley = 1.0;
- line_to(gc, MIN(sec,maxtime), 0);
- line_to(gc, begins, 0);
- cairo_close_path(cr);
- cairo_set_source_rgba(cr, 1, 0.2, 0.2, 0.20);
- cairo_fill_preserve(cr);
- cairo_set_source_rgba(cr, 1, 0.2, 0.2, 0.80);
- cairo_stroke(cr);
}
-/* gets both the actual start and end pressure as well as the scaling factors */
-static int get_cylinder_pressure_range(struct dive *dive, struct graphics_context *gc,
- pressure_t *startp, pressure_t *endp)
+static int setup_temperature_limits(struct graphics_context *gc, struct plot_info *pi)
{
- int i;
- int min, max;
+ int maxtime, mintemp, maxtemp, delta;
- gc->scalex = round_seconds_up(dive->duration.seconds);
+ /* Get plot scaling limits */
+ maxtime = get_maxtime(pi);
+ mintemp = pi->mintemp;
+ maxtemp = pi->maxtemp;
+
+ gc->leftx = 0; gc->rightx = maxtime;
+ /* 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;
+ gc->bottomy = mintemp - delta/2;
+ } else {
+ gc->topy = maxtemp + 1500 + delta*2;
+ gc->bottomy = mintemp - delta/2;
+ }
- max = 0;
- min = 5000000;
- if (startp)
- startp->mbar = endp->mbar = 0;
+ return maxtemp > mintemp;
+}
- for (i = 0; i < dive->samples; i++) {
- int mbar;
- struct sample *sample = dive->sample + i;
+static void plot_single_temp_text(struct graphics_context *gc, int sec, int mkelvin)
+{
+ double deg;
+ const char *unit;
+ static const text_render_options_t tro = {12, 0.2, 0.2, 1.0, LEFT, TOP};
+
+ 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)
+{
+ int i;
+ int last = 0, sec = 0;
+ int last_temperature = 0, last_printed_temp = 0;
- /* FIXME! We only track cylinder 0 right now */
- if (sample->cylinderindex)
+ if (!setup_temperature_limits(gc, pi))
+ return;
+
+ for (i = 0; i < pi->nr; i++) {
+ struct plot_data *entry = pi->entry+i;
+ int mkelvin = entry->temperature;
+
+ if (!mkelvin)
continue;
- mbar = sample->cylinderpressure.mbar;
- if (!mbar)
+ last_temperature = mkelvin;
+ sec = entry->sec;
+ if (sec < last + 300)
continue;
- if (mbar < min)
- min = mbar;
- if (mbar > max)
- max = mbar;
+ last = sec;
+ plot_single_temp_text(gc,sec,mkelvin);
+ last_printed_temp = mkelvin;
}
- if (startp)
- startp->mbar = max;
- if (endp)
- endp->mbar = min;
- if (!max)
- return 0;
- gc->scaley = max * 1.5;
- return 1;
+ /* it would be nice to print the end temperature, if it's different */
+ if (abs(last_temperature - last_printed_temp) > 500)
+ plot_single_temp_text(gc, sec, last_temperature);
}
-static void plot_cylinder_pressure(struct dive *dive, struct graphics_context *gc)
+static void plot_temperature_profile(struct graphics_context *gc, struct plot_info *pi)
{
- int i, sec = -1;
+ int i;
+ cairo_t *cr = gc->cr;
+ int last = 0;
- if (!get_cylinder_pressure_range(dive, gc, NULL, NULL))
+ if (!setup_temperature_limits(gc, pi))
return;
- cairo_set_source_rgba(gc->cr, 0.2, 1.0, 0.2, 0.80);
+ set_source_rgba(gc, 0.2, 0.2, 1.0, 0.8);
+ for (i = 0; i < pi->nr; i++) {
+ struct plot_data *entry = pi->entry + i;
+ int mkelvin = entry->temperature;
+ int sec = entry->sec;
+ if (!mkelvin) {
+ if (!last)
+ continue;
+ mkelvin = last;
+ }
+ if (last)
+ line_to(gc, sec, mkelvin);
+ else
+ move_to(gc, sec, mkelvin);
+ last = mkelvin;
+ }
+ cairo_stroke(cr);
+}
+
+/* gets both the actual start and end pressure as well as the scaling factors */
+static int get_cylinder_pressure_range(struct graphics_context *gc, struct plot_info *pi)
+{
+ gc->leftx = 0;
+ gc->rightx = get_maxtime(pi);
- move_to(gc, 0, dive->cylinder[0].start.mbar);
- for (i = 1; i < dive->samples; i++) {
+ gc->bottomy = 0; gc->topy = pi->maxpressure * 1.5;
+ return pi->maxpressure != 0;
+}
+
+static void plot_pressure_helper(struct graphics_context *gc, struct plot_info *pi, int type)
+{
+ int i;
+ int lift_pen = FALSE;
+
+ for (i = 0; i < pi->nr; i++) {
int mbar;
- struct sample *sample = dive->sample + i;
+ struct plot_data *entry = pi->entry + i;
- mbar = sample->cylinderpressure.mbar;
- if (!mbar)
+ mbar = entry->pressure[type];
+ if (!entry->same_cylinder)
+ lift_pen = TRUE;
+ if (!mbar) {
+ lift_pen = TRUE;
continue;
- sec = sample->time.seconds;
- if (sec <= dive->duration.seconds)
- line_to(gc, 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
+ line_to(gc, entry->sec, mbar);
}
- /*
- * We may have "surface time" events, in which case we don't go
- * back to dive duration
- */
- if (sec < dive->duration.seconds)
- line_to(gc, dive->duration.seconds, dive->cylinder[0].end.mbar);
cairo_stroke(gc->cr);
+
}
-/*
- * Return air usage (in liters).
- */
-static double calculate_airuse(struct dive *dive)
+static void plot_cylinder_pressure(struct graphics_context *gc, struct plot_info *pi)
+{
+ 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)
{
- double airuse = 0;
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;
- for (i = 0; i < MAX_CYLINDERS; i++) {
- cylinder_t *cyl = dive->cylinder + i;
- int size = cyl->type.size.mliter;
- double kilo_atm;
+ if (!get_cylinder_pressure_range(gc, pi))
+ return;
- if (!size)
- continue;
+ /* only loop over the actual events from the dive computer */
+ for (i = 2; i < pi->nr; i++) {
+ entry = pi->entry + i;
- kilo_atm = (cyl->start.mbar - cyl->end.mbar) / 1013250.0;
+ 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;
- /* Liters of air at 1 atm == milliliters at 1k atm*/
- airuse += kilo_atm * size;
+ for (cyl = 0; cyl < MAX_CYLINDERS; cyl++) {
+ if (last_time[cyl]) {
+ plot_pressure_value(gc, last_pressure[cyl], last_time[cyl], CENTER, TOP);
+ }
}
- return airuse;
}
-static void plot_info(struct dive *dive, struct graphics_context *gc)
+static void analyze_plot_info_minmax_minute(struct plot_data *entry, struct plot_data *first, struct plot_data *last, int index)
{
- text_render_options_t tro = {0.2, 1.0, 0.2, LEFT, TOP};
- const double liters_per_cuft = 28.317;
- const char *unit;
- double airuse;
+ struct plot_data *p = entry;
+ int time = entry->sec;
+ int seconds = 90*(index+1);
+ struct plot_data *min, *max;
+ int avg, nr;
+
+ /* Go back 'seconds' in time */
+ while (p > first) {
+ if (p[-1].sec < time - seconds)
+ break;
+ p--;
+ }
+
+ /* Then go forward until we hit an entry past the time */
+ min = max = p;
+ avg = p->depth;
+ nr = 1;
+ while (++p < last) {
+ int depth = p->depth;
+ if (p->sec > time + seconds)
+ break;
+ avg += depth;
+ nr ++;
+ if (depth < min->depth)
+ min = p;
+ if (depth > max->depth)
+ max = p;
+ }
+ entry->min[index] = min;
+ entry->max[index] = max;
+ entry->avg[index] = (avg + nr/2) / nr;
+}
- airuse = calculate_airuse(dive);
- if (!airuse)
+static void analyze_plot_info_minmax(struct plot_data *entry, struct plot_data *first, struct plot_data *last)
+{
+ analyze_plot_info_minmax_minute(entry, first, last, 0);
+ analyze_plot_info_minmax_minute(entry, first, last, 1);
+ analyze_plot_info_minmax_minute(entry, first, last, 2);
+}
+
+static velocity_t velocity(int speed)
+{
+ velocity_t v;
+
+ if (speed < -304) /* ascent faster than -60ft/min */
+ v = CRAZY;
+ else if (speed < -152) /* above -30ft/min */
+ v = FAST;
+ else if (speed < -76) /* -15ft/min */
+ v = MODERATE;
+ else if (speed < -25) /* -5ft/min */
+ v = SLOW;
+ else if (speed < 25) /* very hard to find data, but it appears that the recommendations
+ for descent are usually about 2x ascent rate; still, we want
+ stable to mean stable */
+ v = STABLE;
+ else if (speed < 152) /* between 5 and 30ft/min is considered slow */
+ v = SLOW;
+ else if (speed < 304) /* up to 60ft/min is moderate */
+ v = MODERATE;
+ else if (speed < 507) /* up to 100ft/min is fast */
+ v = FAST;
+ else /* more than that is just crazy - you'll blow your ears out */
+ v = CRAZY;
+
+ return v;
+}
+static struct plot_info *analyze_plot_info(struct plot_info *pi)
+{
+ 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 = SENSOR_PRESSURE(entry) ? : INTERPOLATED_PRESSURE(entry);
+ 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; i++) {
+ struct plot_data *entry = pi->entry+i;
+ int depth;
+
+ if (i < nr-2) {
+ 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].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].depth - entry[past].depth) /
+ (entry[0].sec - entry[past].sec));
+ }
+ } else
+ entry->velocity = STABLE;
+ }
+
+ /* One-, two- and three-minute minmax data */
+ for (i = 0; i < nr; i++) {
+ struct plot_data *entry = pi->entry +i;
+ analyze_plot_info_minmax(entry, pi->entry, pi->entry+nr);
+ }
+
+ 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);
+}
- /* I really need to start addign some unit setting thing */
- switch (output_units.volume) {
- case LITER:
- unit = "l";
- break;
- case CUFT:
- unit = "cuft";
- airuse /= liters_per_cuft;
- break;
+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;
}
- plot_text(gc, &tro, 0.8, 0.8, "vol: %4.2f %s", airuse, unit);
- if (dive->duration.seconds) {
- double pressure = 1 + (dive->meandepth.mm / 10000.0);
- double sac = airuse / pressure * 60 / dive->duration.seconds;
- plot_text(gc, &tro, 0.8, 0.85, "SAC: %4.2f %s/min", sac, unit);
+
+ /* 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 void plot_cylinder_pressure_text(struct dive *dive, struct graphics_context *gc)
+static int get_cylinder_index(struct dive *dive, struct event *ev)
{
- pressure_t startp, endp;
+ int i;
- cairo_set_font_size(gc->cr, 10);
+ /*
+ * 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;
+ }
- if (get_cylinder_pressure_range(dive, gc, &startp, &endp)) {
- int start, end;
- const char *unit = "bar";
+ return 0;
+}
- switch (output_units.pressure) {
- case PASCAL:
- start = startp.mbar * 100;
- end = startp.mbar * 100;
- unit = "pascal";
- break;
- case BAR:
- start = (startp.mbar + 500) / 1000;
- end = (endp.mbar + 500) / 1000;
- unit = "bar";
- break;
- case PSI:
- start = to_PSI(startp);
- end = to_PSI(endp);
- unit = "psi";
+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
+ *
+ * This also makes sure that we have extra empty events on both
+ * sides, so that you can do end-points without having to worry
+ * about it.
+ */
+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, 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 < nr_samples; i++) {
+ int depth;
+ 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+pi_idx;
+
+ lastdepth = depth;
+ if (depth > pi->maxdepth)
+ pi->maxdepth = depth;
+ }
+ 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;
- text_render_options_t tro = {0.2, 1.0, 0.2, LEFT, TOP};
- plot_text(gc, &tro, 0, startp.mbar, "%d %s", start, unit);
- plot_text(gc, &tro, dive->duration.seconds, endp.mbar,
- "%d %s", end, unit);
+ 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 = nr_samples + 2;
+ pi->entry[i].sec = sec + 20;
+ pi->entry[i+1].sec = sec + 40;
+ /* 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->endpressure = pi->minpressure = dive->cylinder[0].end.mbar;
+ pi->maxpressure = dive->cylinder[0].start.mbar;
+
+ 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);
}
-static void plot(struct graphics_context *gc, int w, int h, struct dive *dive)
+void plot(struct graphics_context *gc, cairo_rectangle_int_t *drawing_area, struct dive *dive)
{
- double topx, topy;
+ 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);
- topx = w / 20.0;
- topy = h / 20.0;
- cairo_translate(gc->cr, topx, topy);
+ cairo_translate(gc->cr, drawing_area->x, drawing_area->y);
+ cairo_set_line_width(gc->cr, 2);
+ cairo_set_line_cap(gc->cr, CAIRO_LINE_CAP_ROUND);
+ cairo_set_line_join(gc->cr, CAIRO_LINE_JOIN_ROUND);
/*
* We can use "cairo_translate()" because that doesn't
*
* Snif. What a pity.
*/
- gc->maxx = (w - 2*topx);
- gc->maxy = (h - 2*topy);
+ gc->maxx = (drawing_area->width - 2*drawing_area->x);
+ gc->maxy = (drawing_area->height - 2*drawing_area->y);
+
+ /* Temperature profile */
+ plot_temperature_profile(gc, pi);
/* Cylinder pressure plot */
- plot_cylinder_pressure(dive, gc);
+ plot_cylinder_pressure(gc, pi);
/* Depth profile */
- plot_depth_profile(dive, gc);
+ plot_depth_profile(gc, pi);
+ plot_events(gc, pi, dive);
/* Text on top of all graphs.. */
- plot_depth_text(dive, gc);
- plot_cylinder_pressure_text(dive, gc);
-
- /* And info box in the lower right corner.. */
- gc->scalex = gc->scaley = 1.0;
- plot_info(dive, gc);
+ plot_temperature_text(gc, pi);
+ plot_depth_text(gc, pi);
+ plot_cylinder_pressure_text(gc, pi);
/* Bounding box last */
- cairo_set_source_rgb(gc->cr, 1, 1, 1);
+ gc->leftx = 0; gc->rightx = 1.0;
+ gc->topy = 0; gc->bottomy = 1.0;
+
+ set_source_rgb(gc, 1, 1, 1);
move_to(gc, 0, 0);
line_to(gc, 0, 1);
line_to(gc, 1, 1);
cairo_close_path(gc->cr);
cairo_stroke(gc->cr);
-}
-
-static gboolean expose_event(GtkWidget *widget, GdkEventExpose *event, gpointer data)
-{
- struct dive *dive = current_dive;
- struct graphics_context gc;
- int w,h;
-
- w = widget->allocation.width;
- h = widget->allocation.height;
-
- gc.cr = gdk_cairo_create(widget->window);
- cairo_set_source_rgb(gc.cr, 0, 0, 0);
- cairo_paint(gc.cr);
-
- if (dive)
- plot(&gc, w, h, dive);
-
- cairo_destroy(gc.cr);
-
- return FALSE;
-}
-
-GtkWidget *dive_profile_widget(void)
-{
- GtkWidget *da;
-
- da = gtk_drawing_area_new();
- gtk_widget_set_size_request(da, 450, 350);
- g_signal_connect(da, "expose_event", G_CALLBACK(expose_event), NULL);
-
- return da;
+ free(pi);
}
projects / ext / subsurface.git / blobdiff