Begin a rewrite of the magnetic compass code. So far, only northerly

turning error is supported, and I don't know if this works properly in
the southern hemisphere.

diff --git a/src/Instrumentation/mag_compass.hxx b/src/Instrumentation/mag_compass.hxx
index 5bc176e0248e3239a63802b2fdb93dfbd750ad9d..f5357740f61818653d9634177d2d7c6300c387fa 100644 (file)
--- a/src/Instrumentation/mag_compass.hxx
+++ b/src/Instrumentation/mag_compass.hxx
@@ -55,6 +55,7 @@ private:
 
     SGPropertyNode_ptr _serviceable_node;
     SGPropertyNode_ptr _heading_node;
+    SGPropertyNode_ptr _roll_node;
     SGPropertyNode_ptr _beta_node;
     SGPropertyNode_ptr _variation_node;
     SGPropertyNode_ptr _dip_node;