diff options
Diffstat (limited to 'profile.c')
| -rw-r--r-- | profile.c | 92 |
1 files changed, 81 insertions, 11 deletions
@@ -28,18 +28,18 @@ static int round_feet_up(int feet) /* Scale to 0,0 -> maxx,maxy */ #define SCALE(x,y) (x)*maxx/scalex+topx,(y)*maxy/scaley+topy -static void plot(cairo_t *cr, int w, int h, struct dive *dive, int samples, struct sample *sample) +static void plot_profile(struct dive *dive, cairo_t *cr, + double topx, double topy, double maxx, double maxy) { - int i; - double topx, topy, maxx, maxy; double scalex, scaley; - int maxtime, maxdepth; int begins, sec, depth; + int i, samples; + struct sample *sample; + int maxtime, maxdepth; - topx = w / 20.0; - topy = h / 20.0; - maxx = (w - 2*topx); - maxy = (h - 2*topy); + samples = dive->samples; + if (!samples) + return; cairo_set_line_width(cr, 2); @@ -67,7 +67,7 @@ static void plot(cairo_t *cr, int w, int h, struct dive *dive, int samples, stru scaley = maxdepth; - /* Depth profile */ + 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))); @@ -85,6 +85,76 @@ static void plot(cairo_t *cr, int w, int h, struct dive *dive, int samples, stru cairo_fill_preserve(cr); cairo_set_source_rgba(cr, 1, 0.2, 0.2, 0.80); cairo_stroke(cr); +} + +static int get_tank_pressure_range(struct dive *dive, double *scalex, double *scaley) +{ + int i; + double min, max; + + *scalex = round_seconds_up(dive->duration.seconds); + + max = 0; + min = 5000; + for (i = 0; i < dive->samples; i++) { + struct sample *sample = dive->sample + i; + double bar; + + if (!sample->tankpressure.mbar) + continue; + bar = sample->tankpressure.mbar; + if (bar < min) + min = bar; + if (bar > max) + max = bar; + } + if (!max) + return 0; + *scaley = max * 1.5; + return 1; +} + +static void plot_tank_pressure(struct dive *dive, cairo_t *cr, + double topx, double topy, double maxx, double maxy) +{ + int i; + double scalex, scaley; + + if (!get_tank_pressure_range(dive, &scalex, &scaley)) + return; + + cairo_set_source_rgba(cr, 0.2, 1.0, 0.2, 0.80); + + cairo_move_to(cr, SCALE(0, dive->beginning_pressure.mbar)); + for (i = 1; i < dive->samples; i++) { + int sec, mbar; + struct sample *sample = dive->sample + i; + + sec = sample->time.seconds; + mbar = sample->tankpressure.mbar; + if (!mbar) + continue; + cairo_line_to(cr, SCALE(sec, mbar)); + } + cairo_line_to(cr, SCALE(dive->duration.seconds, dive->end_pressure.mbar)); + cairo_stroke(cr); +} + +static void plot(cairo_t *cr, int w, int h, struct dive *dive) +{ + double topx, topy, maxx, maxy; + double scalex, scaley; + + topx = w / 20.0; + topy = h / 20.0; + maxx = (w - 2*topx); + maxy = (h - 2*topy); + + /* Depth profile */ + plot_profile(dive, cr, topx, topy, maxx, maxy); + + /* Tank pressure plot? */ + plot_tank_pressure(dive, cr, topx, topy, maxx, maxy); /* Bounding box last */ scalex = scaley = 1.0; @@ -111,8 +181,8 @@ static gboolean expose_event(GtkWidget *widget, GdkEventExpose *event, gpointer cairo_set_source_rgb(cr, 0, 0, 0); cairo_paint(cr); - if (dive && dive->samples) - plot(cr, w, h, dive, dive->samples, dive->sample); + if (dive) + plot(cr, w, h, dive); cairo_destroy(cr); |