altoslib: Clean up quaternion and rotation interfaces

Export euler to quaternion (instead of half_euler).
Provide angles to rotate rather than rates and time.
Add comments to quaternion and rotation code.

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

1 files changed, 4 insertions, 4 deletions

diff --git a/altoslib/AltosFlightSeries.java b/altoslib/AltosFlightSeries.java
index 45d3b456..57f1a491 100644
--- a/altoslib/AltosFlightSeries.java
+++ b/altoslib/AltosFlightSeries.java
@@ -363,11 +363,11 @@ public class AltosFlightSeries extends AltosDataListener {
 			double	dt = time - prev_time;
 
 			if (dt > 0) {
-				double	roll = AltosConvert.degrees_to_radians(roll_v.value);
-				double	pitch = AltosConvert.degrees_to_radians(gyro_pitch.value(time));
-				double	yaw = AltosConvert.degrees_to_radians(gyro_yaw.value(time));
+				double	roll = AltosConvert.degrees_to_radians(roll_v.value) * dt;
+				double	pitch = AltosConvert.degrees_to_radians(gyro_pitch.value(time)) * dt;
+				double	yaw = AltosConvert.degrees_to_radians(gyro_yaw.value(time)) * dt;
 
-				rotation.rotate(dt, pitch, yaw, roll);
+				rotation.rotate(pitch, yaw, roll);
 				orient_series.add(time, rotation.tilt());
 			}
 			prev_time = time;