From ec97a62f34eb9049a5face8782631853090bd85e Mon Sep 17 00:00:00 2001
From: Linus Torvalds <torvalds@linux-foundation.org>
Date: Fri, 16 Sep 2011 09:23:54 -0700
Subject: [PATCH] Use plot_info for final remaining temperature and pressure
 data plots too

Ok, this is pretty much it now.  Instead of having various random checks
for "is the time of the sample past the end of the dive" hacks, we not
plot all graphs from the cleaned-up plot_info structure instead of the
raw samples.

Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
---
 profile.c | 43 +++++++++++++++++--------------------------
 1 file changed, 17 insertions(+), 26 deletions(-)

diff --git a/profile.c b/profile.c
index 7b2f31fe5..72a1589d9 100644
--- a/profile.c
+++ b/profile.c
@@ -369,8 +369,7 @@ static void plot_temperature_text(struct graphics_context *gc, struct plot_info
 		plot_single_temp_text(gc, last, last_temperature);
 }
 
-static void plot_temperature_profile(struct dive *dive, struct graphics_context *gc,
-	struct plot_info *pi)
+static void plot_temperature_profile(struct graphics_context *gc, struct plot_info *pi)
 {
 	int i;
 	cairo_t *cr = gc->cr;
@@ -380,20 +379,19 @@ static void plot_temperature_profile(struct dive *dive, struct graphics_context
 		return;
 
 	set_source_rgba(gc, 0.2, 0.2, 1.0, 0.8);
-	for (i = 0; i < dive->samples; i++) {
-		struct sample *sample = dive->sample+i;
-		if (sample->time.seconds > dive->duration.seconds)
-			break; /* let's not plot surface temp events */
-		int mkelvin = sample->temperature.mkelvin;
+	for (i = 0; i < pi->nr; i++) {
+		struct plot_data *entry = pi->entry + i;
+		int mkelvin = entry->temperature;
+		int sec = entry->sec;
 		if (!mkelvin) {
 			if (!last)
 				continue;
 			mkelvin = last;
 		}
 		if (last)
-			line_to(gc, sample->time.seconds, mkelvin);
+			line_to(gc, sec, mkelvin);
 		else
-			move_to(gc, sample->time.seconds, mkelvin);
+			move_to(gc, sec, mkelvin);
 		last = mkelvin;
 	}
 	cairo_stroke(cr);
@@ -409,33 +407,26 @@ static int get_cylinder_pressure_range(struct graphics_context *gc, struct plot_
 	return pi->maxpressure != 0;
 }
 
-static void plot_cylinder_pressure(struct dive *dive, struct graphics_context *gc, struct plot_info *pi)
+static void plot_cylinder_pressure(struct graphics_context *gc, struct plot_info *pi)
 {
-	int i, sec = -1;
+	int i;
 
 	if (!get_cylinder_pressure_range(gc, pi))
 		return;
 
 	cairo_set_source_rgba(gc->cr, 0.2, 1.0, 0.2, 0.80);
 
-	move_to(gc, 0, dive->cylinder[0].start.mbar);
-	for (i = 1; i < dive->samples; i++) {
+	move_to(gc, 0, pi->maxpressure);
+	for (i = 1; i < pi->nr; i++) {
 		int mbar;
-		struct sample *sample = dive->sample + i;
+		struct plot_data *entry = pi->entry + i;
 
-		mbar = sample->cylinderpressure.mbar;
+		mbar = entry->pressure;
 		if (!mbar)
 			continue;
-		sec = sample->time.seconds;
-		if (sec <= dive->duration.seconds)
-			line_to(gc, sec, mbar);
+		line_to(gc, entry->sec, mbar);
 	}
-	/*
-	 * We may have "surface time" events, in which case we don't go
-	 * back to dive duration
-	 */
-	if (sec < dive->duration.seconds)
-		line_to(gc, dive->duration.seconds, dive->cylinder[0].end.mbar);
+	line_to(gc, pi->maxtime, pi->minpressure);
 	cairo_stroke(gc->cr);
 }
 
@@ -704,10 +695,10 @@ void plot(struct graphics_context *gc, int w, int h, struct dive *dive)
 	gc->maxy = (h - 2*topy);
 
 	/* Temperature profile */
-	plot_temperature_profile(dive, gc, pi);
+	plot_temperature_profile(gc, pi);
 
 	/* Cylinder pressure plot */
-	plot_cylinder_pressure(dive, gc, pi);
+	plot_cylinder_pressure(gc, pi);
 
 	/* Depth profile */
 	plot_depth_profile(gc, pi);