struct graphics_context {
cairo_t *cr;
double maxx, maxy;
- double scalex, scaley;
+ double leftx, rightx;
+ double topy, bottomy;
};
/* Plot info with smoothing and one-, two- and three-minute minimums and maximums */
int sec;
int val;
int smoothed;
- int min[3];
- int max[3];
+ struct plot_data *min[3];
+ struct plot_data *max[3];
int avg[3];
} entry[];
};
#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_show_text(cr, buffer);
}
-static void render_depth_sample(struct graphics_context *gc, struct sample *sample, const text_render_options_t *tro)
+static void render_depth_sample(struct graphics_context *gc, struct plot_data *entry, const text_render_options_t *tro)
{
- int sec = sample->time.seconds;
- depth_t depth = sample->depth;
+ int sec = entry->sec;
+ depth_t depth = { entry->val };
const char *fmt;
double d;
plot_text(gc, tro, sec, depth.mm, fmt, d);
}
-/*
- * 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;
-
- if (sample >= end)
- return 0;
-
- depthlimit = sample->depth.mm;
- result = NULL;
-
- for (;;) {
- int depth;
-
- sample++;
- if (sample >= end)
- return NULL;
- depth = sample->depth.mm;
-
- if (minmax) {
- if (depth <= depthlimit) {
- if (depthlimit - depth > enough)
- break;
- continue;
- }
- } else {
- if (depth >= depthlimit) {
- if (depth - depthlimit > enough)
- break;
- continue;
- }
- }
-
- result = sample;
- depthlimit = depth;
- }
- return result;
-}
-
-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)
{
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;
- for (;;) {
- if (b <= a)
- break;
- a = next_minmax(a, b, 1);
- if (!a)
- break;
- render_depth_sample(gc, a, &deep);
- a = next_minmax(a, b, 0);
- if (!a)
- break;
- if (a->depth.mm < 2500)
+ for (i = 0; i < pi->nr; i++) {
+ struct plot_data *entry = pi->entry + i;
+
+ if (entry->val < 2000)
continue;
- render_depth_sample(gc, a, &shallow);
+
+ if (entry == entry->max[2])
+ render_depth_sample(gc, entry, &deep);
+
+ if (entry == entry->min[2])
+ render_depth_sample(gc, entry, &shallow);
}
}
-static void plot_depth_text(struct dive *dive, struct graphics_context *gc)
+static void plot_depth_text(struct dive *dive, 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);
- gc->scalex = maxtime;
- gc->scaley = maxdepth;
-
- sample = dive->sample;
- end = dive->sample + dive->samples;
+ gc->leftx = 0; gc->rightx = maxtime;
+ gc->topy = 0; gc->bottomy = maxdepth;
- plot_text_samples(gc, sample, end);
+ plot_text_samples(gc, pi);
}
static void plot_smoothed_profile(struct graphics_context *gc, struct plot_info *pi)
struct plot_data *entry = pi->entry;
cairo_set_source_rgba(gc->cr, 1, 0.2, 1, a);
- move_to(gc, entry->sec, entry->min[index]);
+ move_to(gc, entry->sec, entry->min[index]->val);
for (i = 1; i < pi->nr; i++) {
entry++;
- line_to(gc, entry->sec, entry->min[index]);
+ line_to(gc, entry->sec, entry->min[index]->val);
}
for (i = 1; i < pi->nr; i++) {
- line_to(gc, entry->sec, entry->max[index]);
+ line_to(gc, entry->sec, entry->max[index]->val);
entry--;
}
cairo_close_path(gc->cr);
struct plot_data *entry;
int maxtime, maxdepth, marker;
- cairo_set_line_width(gc->cr, 2);
-
/* 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;
+ gc->leftx = 0; gc->rightx = maxtime;
+ gc->topy = 0; gc->bottomy = 1.0;
for (i = 5*60; i < maxtime; i += 5*60) {
move_to(gc, i, 0);
line_to(gc, i, 1);
}
/* 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 */
line_to(gc, 1, dive->meandepth.mm);
cairo_stroke(cr);
- gc->scalex = maxtime;
+ gc->leftx = 0; gc->rightx = maxtime;
plot_smoothed_profile(gc, pi);
plot_minmax_profile(gc, pi);
line_to(gc, sec, depth);
}
}
- gc->scaley = 1.0;
+ gc->topy = 0; gc->bottomy = 1.0;
line_to(gc, MIN(sec,maxtime), 0);
line_to(gc, begins, 0);
cairo_close_path(cr);
cairo_stroke(cr);
}
+static int setup_temperature_limits(struct dive *dive, struct graphics_context *gc)
+{
+ int i;
+ int maxtime, mintemp, maxtemp;
+
+ /* Get plot scaling limits */
+ maxtime = round_seconds_up(dive->duration.seconds);
+ 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;
+ }
+
+ gc->leftx = 0; gc->rightx = maxtime;
+ /* Show temperatures in roughly the lower third */
+ gc->topy = maxtemp + (maxtemp - mintemp)*2;
+ gc->bottomy = mintemp - (maxtemp - mintemp)/2;
+
+ return maxtemp > mintemp;
+}
+
+static void plot_temperature_text(struct dive *dive, struct graphics_context *gc)
+{
+ int i;
+ static const text_render_options_t tro = {12, 0.2, 0.2, 1.0, LEFT, TOP};
+
+ int last = 0;
+
+ if (!setup_temperature_limits(dive, gc))
+ return;
+
+ for (i = 0; i < dive->samples; i++) {
+ const char *unit;
+ struct sample *sample = dive->sample+i;
+ int mkelvin = sample->temperature.mkelvin;
+ int sec, deg;
+ if (!mkelvin)
+ continue;
+ sec = sample->time.seconds;
+ if (sec < last)
+ continue;
+ last = sec + 300;
+ if (output_units.temperature == FAHRENHEIT) {
+ deg = to_F(sample->temperature);
+ unit = "F";
+ } else {
+ deg = to_C(sample->temperature);
+ unit = "C";
+ }
+ plot_text(gc, &tro, sec, mkelvin, "%d %s", deg, unit);
+ }
+}
+
+static void plot_temperature_profile(struct dive *dive, struct graphics_context *gc)
+{
+ int i;
+ cairo_t *cr = gc->cr;
+ int last = 0;
+
+ if (!setup_temperature_limits(dive, gc))
+ return;
+
+ cairo_set_source_rgba(cr, 0.2, 0.2, 1.0, 0.8);
+ for (i = 0; i < dive->samples; i++) {
+ struct sample *sample = dive->sample+i;
+ int mkelvin = sample->temperature.mkelvin;
+ if (!mkelvin) {
+ if (!last)
+ continue;
+ mkelvin = last;
+ }
+ if (last)
+ line_to(gc, sample->time.seconds, mkelvin);
+ else
+ move_to(gc, sample->time.seconds, 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 dive *dive, struct graphics_context *gc,
pressure_t *startp, pressure_t *endp)
int i;
int min, max;
- gc->scalex = round_seconds_up(dive->duration.seconds);
+ gc->leftx = 0; gc->rightx = round_seconds_up(dive->duration.seconds);
max = 0;
min = 5000000;
endp->mbar = min;
if (!max)
return 0;
- gc->scaley = max * 1.5;
+ gc->topy = 0; gc->bottomy = max * 1.5;
return 1;
}
{
text_render_options_t tro = {10, 0.2, 1.0, 0.2, LEFT, TOP};
const double liters_per_cuft = 28.317;
- const char *unit;
+ const char *unit, *desc;
double airuse;
airuse = calculate_airuse(dive);
double sac = airuse / pressure * 60 / dive->duration.seconds;
plot_text(gc, &tro, 0.8, 0.85, "SAC: %4.2f %s/min", sac, unit);
}
+ desc = dive->cylinder[0].type.description;
+ if (desc || dive->cylinder[0].gasmix.o2.permille) {
+ int o2 = dive->cylinder[0].gasmix.o2.permille / 10;
+ if (!desc)
+ desc = "";
+ if (!o2)
+ o2 = 21;
+ plot_text(gc, &tro, 0.8, 0.9, "%s (%d%%)", desc, o2);
+ }
}
static void plot_cylinder_pressure_text(struct dive *dive, struct graphics_context *gc)
{
struct plot_data *p = entry;
int time = entry->sec;
- int seconds = 60*(index+1);
- int min, max, avg, nr;
+ int seconds = 90*(index+1);
+ struct plot_data *min, *max;
+ int avg, nr;
/* Go back 'seconds' in time */
while (p > first) {
}
/* Then go forward until we hit an entry past the time */
- min = max = avg = p->val;
+ min = max = p;
+ avg = p->val;
nr = 1;
while (++p < last) {
int val = p->val;
break;
avg += val;
nr ++;
- if (val < min)
- min = val;
- if (val > max)
- max = val;
+ if (val < min->val)
+ min = p;
+ if (val > max->val)
+ max = p;
}
entry->min[index] = min;
entry->max[index] = max;
topx = w / 20.0;
topy = h / 20.0;
cairo_translate(gc->cr, topx, topy);
+ 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
gc->maxx = (w - 2*topx);
gc->maxy = (h - 2*topy);
+ /* Temperature profile */
+ plot_temperature_profile(dive, gc);
+
/* Cylinder pressure plot */
plot_cylinder_pressure(dive, gc);
plot_depth_profile(dive, gc, pi);
/* Text on top of all graphs.. */
- plot_depth_text(dive, gc);
+ plot_temperature_text(dive, gc);
+ plot_depth_text(dive, gc, pi);
plot_cylinder_pressure_text(dive, gc);
/* And info box in the lower right corner.. */
- gc->scalex = gc->scaley = 1.0;
+ gc->leftx = 0; gc->rightx = 1.0;
+ gc->topy = 0; gc->bottomy = 1.0;
plot_info(dive, gc);
/* Bounding box last */
GtkWidget *da;
da = gtk_drawing_area_new();
- gtk_widget_set_size_request(da, 450, 350);
+ gtk_widget_set_size_request(da, 350, 250);
g_signal_connect(da, "expose_event", G_CALLBACK(expose_event), NULL);
return da;
projects / ext / subsurface.git / blobdiff