From: andy <andy>
Date: Thu, 21 Mar 2002 03:35:52 +0000 (+0000)
Subject: Found by inspection a bug in the generation of orientation matrices
X-Git-Url: https://git.mxchange.org/?a=commitdiff_plain;h=e45cb5d0aa3b02ce351d7a03b49fb5a1e35fcc02;p=flightgear.git

Found by inspection a bug in the generation of orientation matrices
for fuselage Surface objects.  If the fuselage wasn't aligned perpendicular
to the Y axis, the matrix wouldn't be orthonormal.  Since all of, perhaps,
three aircraft have ever been built this way, it's doubtful I would have
found this as a bug report. :)
---

diff --git a/src/FDM/YASim/Airplane.cpp b/src/FDM/YASim/Airplane.cpp
index c70db6671..3e5b689f0 100644
--- a/src/FDM/YASim/Airplane.cpp
+++ b/src/FDM/YASim/Airplane.cpp
@@ -431,6 +431,8 @@ float Airplane::compileFuselage(Fuselage* f)
         Math::unit3(fwd, x);
         y[0] = 0; y[1] = 1; y[2] = 0;
         Math::cross3(x, y, z);
+	Math::unit3(z, z);
+	Math::cross3(z, x, y);
         s->setOrientation(o);
 
         _model.addSurface(s);