altoslib: Compute tilt angle from eeprom data

This copies the computation of tilt angle from the firmware so that
post-flight analysis can also show the data.

This change also renames all of the imu values to make them easier to
understand:

	accel	gyro	axis

	along	roll	length of the board
	across	pitch	across the board
	through	yaw	through the board.

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

1 files changed, 34 insertions, 55 deletions

diff --git a/altosuilib/AltosGraphDataPoint.java b/altosuilib/AltosGraphDataPoint.java
index 56dadb8b..a9f4f431 100644
--- a/altosuilib/AltosGraphDataPoint.java
+++ b/altosuilib/AltosGraphDataPoint.java
@@ -40,15 +40,15 @@ public class AltosGraphDataPoint implements AltosUIDataPoint {
 	public static final int data_range = 14;
 	public static final int data_distance = 15;
 	public static final int data_pressure = 16;
-	public static final int data_accel_x = 17;
-	public static final int data_accel_y = 18;
-	public static final int data_accel_z = 19;
-	public static final int data_gyro_x = 20;
-	public static final int data_gyro_y = 21;
-	public static final int data_gyro_z = 22;
-	public static final int data_mag_x = 23;
-	public static final int data_mag_y = 24;
-	public static final int data_mag_z = 25;
+	public static final int data_accel_along = 17;
+	public static final int data_accel_across = 18;
+	public static final int data_accel_through = 19;
+	public static final int data_gyro_roll = 20;
+	public static final int data_gyro_pitch = 21;
+	public static final int data_gyro_yaw = 22;
+	public static final int data_mag_along = 23;
+	public static final int data_mag_across = 24;
+	public static final int data_mag_through = 25;
 	public static final int data_orient = 26;
 	public static final int data_gps_course = 27;
 	public static final int data_gps_ground_speed = 28;
@@ -128,53 +128,32 @@ public class AltosGraphDataPoint implements AltosUIDataPoint {
 			y = state.pressure();
 			break;
 
-		case data_accel_x:
-		case data_accel_y:
-		case data_accel_z:
-		case data_gyro_x:
-		case data_gyro_y:
-		case data_gyro_z:
-			AltosIMU	imu = state.imu;
-			if (imu == null)
-				break;
-			switch (index) {
-			case data_accel_x:
-				y = imu.accel_x;
-				break;
-			case data_accel_y:
-				y = imu.accel_y;
-				break;
-			case data_accel_z:
-				y = imu.accel_z;
-				break;
-			case data_gyro_x:
-				y = imu.gyro_x;
-				break;
-			case data_gyro_y:
-				y = imu.gyro_y;
-				break;
-			case data_gyro_z:
-				y = imu.gyro_z;
-				break;
-			}
+		case data_accel_along:
+			y = state.accel_along();
 			break;
-		case data_mag_x:
-		case data_mag_y:
-		case data_mag_z:
-			AltosMag	mag = state.mag;
-			if (mag == null)
-				break;
-			switch (index) {
-			case data_mag_x:
-				y = mag.x;
-				break;
-			case data_mag_y:
-				y = mag.y;
-				break;
-			case data_mag_z:
-				y = mag.z;
-				break;
-			}
+		case data_accel_across:
+			y = state.accel_across();
+			break;
+		case data_accel_through:
+			y = state.accel_through();
+			break;
+		case data_gyro_roll:
+			y = state.gyro_roll();
+			break;
+		case data_gyro_pitch:
+			y = state.gyro_pitch();
+			break;
+		case data_gyro_yaw:
+			y = state.gyro_yaw();
+			break;
+		case data_mag_along:
+			y = state.mag_along();
+			break;
+		case data_mag_across:
+			y = state.mag_across();
+			break;
+		case data_mag_through:
+			y = state.mag_through();
 			break;
 		case data_orient:
 			y = state.orient();