altoslib: Store saved state in version-independent format

[fw/altos] / altoslib / AltosQuaternion.java

diff --git a/altoslib/AltosQuaternion.java b/altoslib/AltosQuaternion.java
index 351685f8c578708243f0f038962f1bb5177a5b3a..af9eb47558c701ad273753934826a4f6a5638854 100644 (file)
--- a/altoslib/AltosQuaternion.java
+++ b/altoslib/AltosQuaternion.java
@@ -17,7 +17,7 @@
 
 package org.altusmetrum.altoslib_11;
 
-public class AltosQuaternion {
+public class AltosQuaternion implements AltosHashable {
        double  r;              /* real bit */
        double  x, y, z;        /* imaginary bits */
 
@@ -147,4 +147,24 @@ public class AltosQuaternion {
                                           c_x * s_y * c_z + s_x * c_y * s_z,
                                           c_x * c_y * s_z - s_x * s_y * c_z);
        }
+
+       public AltosHashSet hashSet() {
+               AltosHashSet h = new AltosHashSet();
+
+               h.putDouble("r", r);
+               h.putDouble("x", x);
+               h.putDouble("y", y);
+               h.putDouble("z", z);
+               return h;
+       }
+
+       public AltosQuaternion(AltosHashSet h) {
+               if (h == null)
+                       return;
+
+               r = h.getDouble("r", 1);
+               x = h.getDouble("x", 0);
+               y = h.getDouble("y", 0);
+               z = h.getDouble("z", 0);
+       }
 }