int selected_dive = 0;
#define ROUND_UP(x,y) ((((x)+(y)-1)/(y))*(y))
-#define MAX(x,y) ((x) > (y) ? (x) : (y))
+/*
+ * 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.
+ */
static int round_seconds_up(int seconds)
{
- return MAX(30, ROUND_UP(seconds, 60*10));
+ return MAX(30*60, ROUND_UP(seconds, 60*10));
}
static int round_feet_up(int feet)
{
- return MAX(45, ROUND_UP(feet+5, 15));
+ return MAX(90, ROUND_UP(feet+5, 15));
}
/* 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 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);
maxtime = round_seconds_up(dive->duration.seconds);
maxdepth = round_feet_up(to_feet(dive->maxdepth));
+ /* Time markers: every 5 min */
+ scalex = maxtime;
+ scaley = 1.0;
+ for (i = 5*60; i < maxtime; i += 5*60) {
+ cairo_move_to(cr, SCALE(i, 0));
+ cairo_line_to(cr, SCALE(i, 1));
+ }
+
/* Depth markers: every 15 ft */
scalex = 1.0;
scaley = maxdepth;
cairo_move_to(cr, SCALE(0, i));
cairo_line_to(cr, SCALE(1, i));
}
+ cairo_stroke(cr);
- /* Time markers: every 5 min */
- scalex = maxtime;
- scaley = 1.0;
- for (i = 5*60; i < maxtime; i += 5*60) {
- cairo_move_to(cr, SCALE(i, 0));
- cairo_line_to(cr, SCALE(i, 1));
- }
+ /* 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_stroke(cr);
- scaley = maxdepth;
+ scalex = maxtime;
- /* 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)));
for (i = 1; i < dive->samples; i++) {
sample++;
- cairo_line_to(cr, SCALE(sample->time.seconds, to_feet(sample->depth)));
+ sec = sample->time.seconds;
+ depth = to_feet(sample->depth);
+ cairo_line_to(cr, SCALE(sec, depth));
}
+ scaley = 1.0;
+ cairo_line_to(cr, SCALE(sec, 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_fill_preserve(cr);
+ cairo_set_source_rgba(cr, 1, 0.2, 0.2, 0.80);
cairo_stroke(cr);
+}
+
+static int get_cylinder_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->cylinderpressure.mbar)
+ continue;
+ bar = sample->cylinderpressure.mbar;
+ if (bar < min)
+ min = bar;
+ if (bar > max)
+ max = bar;
+ }
+ if (!max)
+ return 0;
+ *scaley = max * 1.5;
+ return 1;
+}
+
+static void plot_cylinder_pressure(struct dive *dive, cairo_t *cr,
+ double topx, double topy, double maxx, double maxy)
+{
+ int i;
+ double scalex, scaley;
+
+ if (!get_cylinder_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->cylinderpressure.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);
+
+ /* Cylinder pressure plot? */
+ plot_cylinder_pressure(dive, cr, topx, topy, maxx, maxy);
/* Bounding box last */
scalex = scaley = 1.0;
static gboolean expose_event(GtkWidget *widget, GdkEventExpose *event, gpointer data)
{
- struct dive *dive = dive_table.dives[selected_dive];
+ struct dive *dive = current_dive;
cairo_t *cr;
int w,h;
cairo_set_source_rgb(cr, 0, 0, 0);
cairo_paint(cr);
- if (dive->samples)
- plot(cr, w, h, dive, dive->samples, dive->sample);
+ if (dive)
+ plot(cr, w, h, dive);
cairo_destroy(cr);
GtkWidget *frame;
GtkWidget *da;
- frame = gtk_frame_new("Dive profile");
+ frame = gtk_frame_new("Dive Profile");
gtk_widget_show(frame);
da = gtk_drawing_area_new();
gtk_widget_set_size_request(da, 450, 350);
projects / ext / subsurface.git / blobdiff