Projection matrix and texture size should be coherent

[flightgear.git] / src / Instrumentation / heading_indicator_dg.cxx

diff --git a/src/Instrumentation/heading_indicator_dg.cxx b/src/Instrumentation/heading_indicator_dg.cxx
index 036caf47cb37472882bb3b4d978fc85934e64e14..d9923c2e556816642d228e7cfec095169fef08b0 100644 (file)
--- a/src/Instrumentation/heading_indicator_dg.cxx
+++ b/src/Instrumentation/heading_indicator_dg.cxx
@@ -108,7 +108,7 @@ HeadingIndicatorDG::update (double dt)
 
                                 // Next, calculate the indicated heading,
                                 // introducing errors.
-    double factor = 0.01 / (spin * spin * spin * spin * spin * spin);
+    double factor = 100 * (spin * spin * spin * spin * spin * spin);
     double heading = _heading_in_node->getDoubleValue();
 
                                 // Now, we have to get the current
@@ -119,7 +119,7 @@ HeadingIndicatorDG::update (double dt)
     while ((heading - _last_heading_deg) < -180)
         _last_heading_deg -= 360;
 
-    heading = fgGetLowPass(_last_heading_deg, heading, dt/factor);
+    heading = fgGetLowPass(_last_heading_deg, heading, dt * factor);
     _last_heading_deg = heading;
 
     heading += offset;