altoslib: Add null constructors to AltosQuaternion and AltosRotation

These will be used in the reflection-based JSON code

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

1 files changed, 8 insertions, 4 deletions

diff --git a/altoslib/AltosRotation.java b/altoslib/AltosRotation.java
index 321a0f30..6db0b541 100644
--- a/altoslib/AltosRotation.java
+++ b/altoslib/AltosRotation.java
@@ -48,14 +48,18 @@ public class AltosRotation implements AltosJsonable {
 		rotation = up.vectors_to_rotation(orient);
 	}
 
-	public AltosJson json() {
-		return rotation.json();
-	}
-
 	public AltosRotation(AltosJson j) {
 		rotation = new AltosQuaternion(j);
 	}
 
+	public AltosRotation() {
+		rotation = new AltosQuaternion();
+	}
+
+	public AltosJson json() {
+		return rotation.json();
+	}
+
 	public static AltosRotation fromJson(AltosJson j, AltosRotation def) {
 		if (j == null)
 			return def;