altoslib: Reset transient AltosCalData values before processing data

[fw/altos] / altoslib / AltosRotation.java

diff --git a/altoslib/AltosRotation.java b/altoslib/AltosRotation.java
index 49225f77db80d34cf82199027944faebddc5fff4..1235d86b90e57a1c0da9d3923b2c16db0cd09d0f 100644 (file)
--- a/altoslib/AltosRotation.java
+++ b/altoslib/AltosRotation.java
@@ -3,7 +3,8 @@
  *
  * This program is free software; you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; version 2 of the License.
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
  *
  * This program is distributed in the hope that it will be useful, but
  * WITHOUT ANY WARRANTY; without even the implied warranty of
@@ -15,9 +16,9 @@
  * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
  */
 
-package org.altusmetrum.altoslib_6;
+package org.altusmetrum.altoslib_11;
 
-public class AltosRotation {
+public class AltosRotation extends AltosQuaternion {
        private AltosQuaternion         rotation;
 
        public double tilt() {
@@ -28,7 +29,7 @@ public class AltosRotation {
        }
 
        public void rotate(double dt, double x, double y, double z) {
-               AltosQuaternion rot = AltosQuaternion.half_euler(x * dt, y * dt, z * dt);
+               AltosQuaternion rot = AltosQuaternion.half_euler(x * dt / 2.0, y * dt / 2.0, z * dt / 2.0);
                rotation = rot.multiply(rotation).normalize();
        }
 
@@ -47,4 +48,8 @@ public class AltosRotation {
                AltosQuaternion up = new AltosQuaternion(0, 0, 0, sky);
                rotation = up.vectors_to_rotation(orient);
        }
+
+       public AltosRotation() {
+               rotation = new AltosQuaternion();
+       }
 }