altosui: When computing flight stats, auto-detect boost time

Detect when boost actually starts by looking for the last low
acceleration value before the recorded boost time. This improves the
computation of the boost state data.

Signed-off-by: Keith Packard <keithp@keithp.com>

1 files changed, 25 insertions, 5 deletions

diff --git a/altosui/AltosFlightStats.java b/altosui/AltosFlightStats.java
index dce5cb3e..ed5a336e 100644
--- a/altosui/AltosFlightStats.java
+++ b/altosui/AltosFlightStats.java
@@ -77,10 +77,30 @@ public class AltosFlightStats {
 		return landed_time;
 	}
 
+	double boost_time(AltosRecordIterable iterable) {
+		double boost_time = -1000;
+
+		AltosState state = null;
+
+		for (AltosRecord record : iterable) {
+			state = new AltosState(record, state);
+			
+			if (state.acceleration < 1)
+				boost_time = state.time;
+			if (state.state >= Altos.ao_flight_boost)
+				break;
+		}
+		if (boost_time == -1000)
+			boost_time = state.time;
+		System.out.printf ("boost time %f instead of %f\n", boost_time, state.time);
+		return boost_time;
+	}
+
+
 	public AltosFlightStats(AltosRecordIterable iterable) throws InterruptedException, IOException {
 		AltosState	state = null;
 		AltosState	new_state = null;
-		double		boost_time = -1;
+		double		boost_time = boost_time(iterable);
 		double		end_time = 0;
 		double		landed_time = landed_time(iterable);
 
@@ -95,10 +115,12 @@ public class AltosFlightStats {
 			new_state = new AltosState(record, state);
 			end_time = new_state.time;
 			state = new_state;
+			if (state.time >= boost_time && state.state < Altos.ao_flight_boost)
+				state.state = Altos.ao_flight_boost;
+			if (state.time >= landed_time && state.state < Altos.ao_flight_landed)
+				state.state = Altos.ao_flight_landed;
 			if (0 <= state.state && state.state < Altos.ao_flight_invalid) {
 				if (state.state >= Altos.ao_flight_boost) {
-					if (boost_time == -1)
-						boost_time = state.time;
 					if (state.gps != null && state.gps.locked &&
 					    year < 0) {
 						year = state.gps.year;
@@ -109,8 +131,6 @@ public class AltosFlightStats {
 						second = state.gps.second;
 					}
 				}
-				if (state.time >= landed_time)
-					state.state = Altos.ao_flight_landed;
 				state_accel[state.state] += state.acceleration;
 				state_speed[state.state] += state.speed;
 				state_baro_speed[state.state] += state.baro_speed;