X-Git-Url: http://git.tdb.fi/?a=blobdiff_plain;ds=sidebyside;f=profile.c;h=6ddc23a70a808d1cc4055238e197b7060eb20dcc;hb=75cb94f06789380c161317d17ce73a938a3556b5;hp=f0a4c7030f68f77044996520d40ddf9df02cae2b;hpb=dfe5133b579d1ee999080de68041d0009aa4b5d5;p=ext%2Fsubsurface.git

diff --git a/profile.c b/profile.c
index f0a4c70..6ddc23a 100644
--- a/profile.c
+++ b/profile.c
@@ -28,8 +28,8 @@ static int round_feet_up(int feet)
 }
 
 typedef struct {
-    double r,g,b;
-    enum {CENTER,LEFT} allign;
+	double r,g,b;
+	enum {CENTER,LEFT} allign;
 } text_render_options_t;
 
 static void plot_text(cairo_t *cr, text_render_options_t *tro,
@@ -46,7 +46,7 @@ static void plot_text(cairo_t *cr, text_render_options_t *tro,
 	cairo_text_extents(cr, buffer, &extents);
 
 	if (tro->allign == CENTER)
-	    x -= extents.width/2 + extents.x_bearing;
+		x -= extents.width/2 + extents.x_bearing;
 	y += extents.height * 1.2;
 
 	cairo_move_to(cr, x, y);
@@ -113,10 +113,10 @@ static int next_minmax(struct dive *dive, int index, int minmax)
 }
 
 /* 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;
@@ -146,7 +146,7 @@ static void plot_depth_text(struct dive *dive, cairo_t *cr,
 }
 
 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;
@@ -197,11 +197,13 @@ static void plot_depth_profile(struct dive *dive, cairo_t *cr,
 	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 = 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(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);
@@ -212,18 +214,17 @@ static void plot_depth_profile(struct dive *dive, cairo_t *cr,
 
 /* 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,
-				       double *startp, double *endp)
+				       pressure_t *startp, pressure_t *endp)
 {
 	int i;
-	double min, max;
-	double bar;
+	int min, max, mbar;
 
 	*scalex = round_seconds_up(dive->duration.seconds);
 
 	max = 0;
-	min = 5000;
+	min = 5000000;
 	if (startp)
-	    *startp = *endp = 0.0;
+		startp->mbar = endp->mbar = 0;
 
 	for (i = 0; i < dive->samples; i++) {
 		struct sample *sample = dive->sample + i;
@@ -231,18 +232,18 @@ static int get_cylinder_pressure_range(struct dive *dive, double *scalex, double
 		/* 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 != 0.0 && startp && *startp == 0.0)
-		    *startp = bar;
-		if (bar < min)
-			min = bar;
-		if (bar > max)
-			max = bar;
+		if (mbar && startp && !startp->mbar)
+			startp->mbar = mbar;
+		if (mbar < min)
+			min = mbar;
+		if (mbar > max)
+			max = mbar;
 	}
 	if (endp)
-	    *endp = bar;
+		endp->mbar = mbar;
 	if (!max)
 		return 0;
 	*scaley = max * 1.5;
@@ -250,7 +251,7 @@ static int get_cylinder_pressure_range(struct dive *dive, double *scalex, double
 }
 
 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;
@@ -269,7 +270,8 @@ static void plot_cylinder_pressure(struct dive *dive, cairo_t *cr,
 		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
@@ -280,21 +282,65 @@ static void plot_cylinder_pressure(struct dive *dive, cairo_t *cr,
 	cairo_stroke(cr);
 }
 
+/*
+ * Return air usage (in liters).
+ */
+static double calculate_airuse(struct dive *dive)
+{
+	double airuse = 0;
+	int i;
+
+	for (i = 0; i < MAX_CYLINDERS; i++) {
+		cylinder_t *cyl = dive->cylinder + i;
+		int size = cyl->type.size.mliter;
+		double kilo_atm;
+
+		if (!size)
+			continue;
+
+		kilo_atm = (cyl->start.mbar - cyl->end.mbar) / 1013250.0;
+
+		/* Liters of air at 1 atm == milliliters at 1k atm*/
+		airuse += kilo_atm * size;
+	}
+	return airuse;
+}
+
+static void plot_info(struct dive *dive, cairo_t *cr,
+	double maxx, double maxy)
+{
+	text_render_options_t tro = {0.2, 1.0, 0.2, LEFT};
+	const double liters_per_cuft = 28.317;
+	double airuse;
+
+	airuse = calculate_airuse(dive);
+	if (!airuse)
+		return;
+
+	/* I really need to start addign some unit setting thing */
+	airuse /= liters_per_cuft;
+	plot_text(cr, &tro, maxx*0.8, maxy*0.8, "cuft: %4.2f", airuse);
+	if (dive->duration.seconds) {
+		double pressure = 1 + (dive->meandepth.mm / 10000.0);
+		double sac = airuse / pressure * 60 / dive->duration.seconds;
+		plot_text(cr, &tro, maxx*0.8, maxy*0.85, "SAC: %4.2f", sac);
+	}
+}
 
 static void plot_cylinder_pressure_text(struct dive *dive, cairo_t *cr,
-	double topx, double topy, double maxx, double maxy)
+	double maxx, double maxy)
 {
 	double scalex, scaley;
-	double startp,endp;
+	pressure_t startp, endp;
 
 	cairo_set_font_size(cr, 10);
 
 	if (get_cylinder_pressure_range(dive, &scalex, &scaley,
 					&startp, &endp)) {
 		text_render_options_t tro = {0.2, 1.0, 0.2, LEFT};
-		plot_text(cr, &tro, SCALE(0, startp), "%3.0f bar", startp/1000.0);
-		plot_text(cr, &tro, SCALE(dive->duration.seconds, endp),
-			  "%3.0f bar", endp/1000.0);
+		plot_text(cr, &tro, SCALE(0, startp.mbar), "%3.0f bar", startp.mbar/1000.0);
+		plot_text(cr, &tro, SCALE(dive->duration.seconds, endp.mbar),
+			  "%3.0f bar", endp.mbar/1000.0);
 	}
 }
 
@@ -307,16 +353,20 @@ static void plot(cairo_t *cr, int w, int h, struct dive *dive)
 	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_cylinder_pressure_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, maxx, maxy);
 
 	/* Bounding box last */
 	scalex = scaley = 1.0;