return MAX(30*60, ROUND_UP(seconds, 60*10));
}
-static int round_feet_up(int feet)
+static int round_depth_up(depth_t depth)
{
- return MAX(90, ROUND_UP(feet+5, 15));
+ unsigned mm = depth.mm;
+ /* Minimum 30m */
+ return MAX(30000, ROUND_UP(mm+3000, 10000));
}
-static void plot_text(cairo_t *cr, int xpos, int ypos, double x, double y, const char *fmt, ...)
+typedef struct {
+ double r,g,b;
+ enum {CENTER,LEFT} allign;
+} text_render_options_t;
+
+static void plot_text(cairo_t *cr, text_render_options_t *tro,
+ double x, double y, const char *fmt, ...)
{
cairo_text_extents_t extents;
char buffer[80];
cairo_text_extents(cr, buffer, &extents);
- switch (xpos) {
- case -1: /* Left-justify */
- break;
- case 0: /* Center */
+ if (tro->allign == CENTER)
x -= extents.width/2 + extents.x_bearing;
- break;
- case 1: /* Right-justify */
- x -= extents.width + extents.x_bearing;
- break;
- }
- switch (ypos) {
- case -1: /* Top-justify */
- break;
- case 0: /* Center */
- y -= extents.height/2 + extents.y_bearing;
- break;
- case 1: /* Bottom-justify */
- y += extents.height * 1.2;
- break;
- }
+ y += extents.height * 1.2;
cairo_move_to(cr, x, y);
cairo_text_path(cr, buffer);
cairo_stroke(cr);
cairo_move_to(cr, x, y);
- cairo_set_source_rgb(cr, 1, 0, 0);
+ cairo_set_source_rgb(cr, tro->r, tro->g, tro->b);
cairo_show_text(cr, buffer);
}
}
/* Scale to 0,0 -> maxx,maxy */
-#define SCALE(x,y) (x)*maxx/scalex+topx,(y)*maxy/scaley+topy
+#define SCALE(x,y) (x)*maxx/scalex,(y)*maxy/scaley
static void plot_depth_text(struct dive *dive, cairo_t *cr,
- double topx, double topy, double maxx, double maxy)
+ double maxx, double maxy)
{
double scalex, scaley;
int maxtime, maxdepth;
/* Get plot scaling limits */
maxtime = round_seconds_up(dive->duration.seconds);
- maxdepth = round_feet_up(to_feet(dive->maxdepth));
+ maxdepth = round_depth_up(dive->maxdepth);
scalex = maxtime;
scaley = maxdepth;
cairo_set_source_rgb(cr, 1, 0.2, 0.2);
i = 0;
while ((i = next_minmax(dive, i, 1)) != 0) {
+ text_render_options_t tro = {1.0, 0.2, 0.2, CENTER};
struct sample *sample = dive->sample+i;
int sec = sample->time.seconds;
- int depth = to_feet(sample->depth);
+ depth_t depth = sample->depth;
+ const char *fmt;
+ 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(cr, 0, 1, SCALE(sec, depth), "%d ft", depth);
+ plot_text(cr, &tro, SCALE(sec, depth.mm), fmt, d);
i = next_minmax(dive, i, 0);
if (!i)
break;
}
static void plot_depth_profile(struct dive *dive, cairo_t *cr,
- double topx, double topy, double maxx, double maxy)
+ double maxx, double maxy)
{
double scalex, scaley;
int begins, sec, depth;
int i, samples;
struct sample *sample;
- int maxtime, maxdepth;
+ int maxtime, maxdepth, marker;
samples = dive->samples;
if (!samples)
/* Get plot scaling limits */
maxtime = round_seconds_up(dive->duration.seconds);
- maxdepth = round_feet_up(to_feet(dive->maxdepth));
+ maxdepth = round_depth_up(dive->maxdepth);
/* Time markers: every 5 min */
scalex = maxtime;
cairo_line_to(cr, SCALE(i, 1));
}
- /* Depth markers: every 15 ft */
+ /* Depth markers: every 30 ft or 10 m*/
scalex = 1.0;
scaley = 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);
- for (i = 15; i < maxdepth; i += 15) {
+ for (i = marker; i < maxdepth; i += marker) {
cairo_move_to(cr, SCALE(0, i));
cairo_line_to(cr, SCALE(1, i));
}
/* Show mean depth */
cairo_set_source_rgba(cr, 1, 0.2, 0.2, 0.40);
- cairo_move_to(cr, SCALE(0, to_feet(dive->meandepth)));
- cairo_line_to(cr, SCALE(1, to_feet(dive->meandepth)));
+ cairo_move_to(cr, SCALE(0, dive->meandepth.mm));
+ cairo_line_to(cr, SCALE(1, dive->meandepth.mm));
cairo_stroke(cr);
scalex = maxtime;
sample = dive->sample;
cairo_set_source_rgba(cr, 1, 0.2, 0.2, 0.80);
begins = sample->time.seconds;
- cairo_move_to(cr, SCALE(sample->time.seconds, to_feet(sample->depth)));
+ cairo_move_to(cr, SCALE(sample->time.seconds, sample->depth.mm));
for (i = 1; i < dive->samples; i++) {
sample++;
sec = sample->time.seconds;
- depth = to_feet(sample->depth);
- cairo_line_to(cr, SCALE(sec, depth));
+ if (sec <= maxtime) {
+ depth = sample->depth.mm;
+ cairo_line_to(cr, SCALE(sec, depth));
+ }
}
scaley = 1.0;
- cairo_line_to(cr, SCALE(sec, 0));
+ cairo_line_to(cr, SCALE(MIN(sec,maxtime), 0));
cairo_line_to(cr, SCALE(begins, 0));
cairo_close_path(cr);
cairo_set_source_rgba(cr, 1, 0.2, 0.2, 0.20);
cairo_stroke(cr);
}
-static int get_cylinder_pressure_range(struct dive *dive, double *scalex, double *scaley)
+/* gets both the actual start and end pressure as well as the scaling factors */
+static int get_cylinder_pressure_range(struct dive *dive, double *scalex, double *scaley,
+ pressure_t *startp, pressure_t *endp)
{
int i;
- double min, max;
+ int min, max;
*scalex = round_seconds_up(dive->duration.seconds);
max = 0;
- min = 5000;
+ min = 5000000;
+ if (startp)
+ startp->mbar = endp->mbar = 0;
+
for (i = 0; i < dive->samples; i++) {
+ int mbar;
struct sample *sample = dive->sample + i;
- double bar;
/* FIXME! We only track cylinder 0 right now */
if (sample->cylinderindex)
continue;
- if (!sample->cylinderpressure.mbar)
+ mbar = sample->cylinderpressure.mbar;
+ if (!mbar)
continue;
- bar = sample->cylinderpressure.mbar;
- if (bar < min)
- min = bar;
- if (bar > max)
- max = bar;
+ if (mbar < min)
+ min = mbar;
+ if (mbar > max)
+ max = mbar;
}
+ if (startp)
+ startp->mbar = max;
+ if (endp)
+ endp->mbar = min;
if (!max)
return 0;
*scaley = max * 1.5;
}
static void plot_cylinder_pressure(struct dive *dive, cairo_t *cr,
- double topx, double topy, double maxx, double maxy)
+ double maxx, double maxy)
{
int i, sec = -1;
double scalex, scaley;
- if (!get_cylinder_pressure_range(dive, &scalex, &scaley))
+ if (!get_cylinder_pressure_range(dive, &scalex, &scaley, NULL, NULL))
return;
cairo_set_source_rgba(cr, 0.2, 1.0, 0.2, 0.80);
if (!mbar)
continue;
sec = sample->time.seconds;
- cairo_line_to(cr, SCALE(sec, mbar));
+ if (sec <= dive->duration.seconds)
+ cairo_line_to(cr, SCALE(sec, mbar));
}
/*
* We may have "surface time" events, in which case we don't go
}
static void plot_info(struct dive *dive, cairo_t *cr,
- double topx, double topy, double maxx, double maxy)
+ double maxx, double maxy)
{
+ text_render_options_t tro = {0.2, 1.0, 0.2, LEFT};
const double liters_per_cuft = 28.317;
+ const char *unit;
double airuse;
airuse = calculate_airuse(dive);
return;
/* I really need to start addign some unit setting thing */
- airuse /= liters_per_cuft;
- plot_text(cr, 1, 0, maxx*0.95, maxy*0.9, "cuft: %4.2f", airuse);
+ switch (output_units.volume) {
+ case LITER:
+ unit = "l";
+ break;
+ case CUFT:
+ unit = "cuft";
+ airuse /= liters_per_cuft;
+ break;
+ }
+ plot_text(cr, &tro, maxx*0.8, maxy*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(cr, 1, 0, maxx*0.95, maxy*0.95, "SAC: %4.2f", sac);
+ plot_text(cr, &tro, maxx*0.8, maxy*0.85, "SAC: %4.2f %s/min", sac, unit);
+ }
+}
+
+static void plot_cylinder_pressure_text(struct dive *dive, cairo_t *cr,
+ double maxx, double maxy)
+{
+ double scalex, scaley;
+ pressure_t startp, endp;
+
+ cairo_set_font_size(cr, 10);
+
+ if (get_cylinder_pressure_range(dive, &scalex, &scaley,
+ &startp, &endp)) {
+ int start, end;
+ const char *unit = "bar";
+
+ 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";
+ break;
+ }
+
+ text_render_options_t tro = {0.2, 1.0, 0.2, LEFT};
+ plot_text(cr, &tro, SCALE(0, startp.mbar), "%d %s", start, unit);
+ plot_text(cr, &tro, SCALE(dive->duration.seconds, endp.mbar),
+ "%d %s", end, unit);
}
}
topy = h / 20.0;
maxx = (w - 2*topx);
maxy = (h - 2*topy);
+ cairo_translate(cr, topx, topy);
/* Cylinder pressure plot */
- plot_cylinder_pressure(dive, cr, topx, topy, maxx, maxy);
+ plot_cylinder_pressure(dive, cr, maxx, maxy);
/* Depth profile */
- plot_depth_profile(dive, cr, topx, topy, maxx, maxy);
+ plot_depth_profile(dive, cr, maxx, maxy);
/* Text on top of all graphs.. */
- plot_depth_text(dive, cr, topx, topy, maxx, maxy);
+ plot_depth_text(dive, cr, maxx, maxy);
+ plot_cylinder_pressure_text(dive, cr, maxx, maxy);
/* And info box in the lower right corner.. */
- plot_info(dive, cr, topx, topy, maxx, maxy);
+ plot_info(dive, cr, maxx, maxy);
/* Bounding box last */
scalex = scaley = 1.0;
projects / ext / subsurface.git / blobdiff