+/* 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>
int selected_dive = 0;
+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 {
/* Depth info */
int val;
int smoothed;
- enum { STABLE, SLOW, MODERATE, FAST, CRAZY } velocity;
+ velocity_t velocity;
struct plot_data *min[3];
struct plot_data *max[3];
int avg[3];
cairo_set_source_rgba(gc->cr, r, g, b, a);
}
-static void set_source_rgb(struct graphics_context *gc, double r, double g, double b)
+void set_source_rgb(struct graphics_context *gc, double r, double g, double b)
{
set_source_rgba(gc, r, g, b, 1);
}
gc->leftx = 0; gc->rightx = maxtime;
- plot_smoothed_profile(gc, pi);
- plot_minmax_profile(gc, pi);
+ /*
+ * 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);
+ }
entry = pi->entry;
set_source_rgba(gc, 1, 0.2, 0.2, 0.80);
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;
entry->smoothed = (val+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) {
- val = (entry[0].val - entry[-1].val) / (entry[0].sec - entry[-1].sec);
- if (val < -304) /* ascent faster than -60ft/min */
- entry->velocity = CRAZY;
- else if (val < -152) /* above -30ft/min */
- entry->velocity = FAST;
- else if (val < -76) /* -15ft/min */
- entry->velocity = MODERATE;
- else if (val < -25) /* -5ft/min */
- entry->velocity = SLOW;
- else if (val < 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 */
- entry->velocity = STABLE;
- else if (val < 152) /* between 5 and 30ft/min is considered slow */
- entry->velocity = SLOW;
- else if (val < 304) /* up to 60ft/min is moderate */
- entry->velocity = MODERATE;
- else if (val < 507) /* up to 100ft/min is fast */
- entry->velocity = FAST;
- else /* more than that is just crazy - you'll blow your ears out */
- entry->velocity = CRAZY;
+ entry->velocity = velocity((entry[0].val - entry[-1].val) / (entry[0].sec - entry[-1].sec));
+ /* if our samples are short and we aren't too FAST*/
+ if (entry[0].sec - entry[-1].sec < 30 && entry->velocity < FAST) {
+ int past = -2;
+ while (pi->entry <= entry-past && entry[0].sec - entry[past].sec < 30)
+ past--;
+ entry->velocity = velocity((entry[0].val - entry[past].val) /
+ (entry[0].sec - entry[past].sec));
+ }
} else
entry->velocity = STABLE;
}
cairo_stroke(gc->cr);
}
-
-static gboolean expose_event(GtkWidget *widget, GdkEventExpose *event, gpointer data)
-{
- struct dive *dive = current_dive;
- struct graphics_context gc = { .printer = 0 };
- int w,h;
-
- w = widget->allocation.width;
- h = widget->allocation.height;
-
- gc.cr = gdk_cairo_create(widget->window);
- set_source_rgb(&gc, 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, 350, 250);
- g_signal_connect(da, "expose_event", G_CALLBACK(expose_event), NULL);
-
- return da;
-}
projects / ext / subsurface.git / blobdiff