Correct order of rotations to get roll, pitch and yaw corresponding to...

Correct order of rotations to get roll, pitch and yaw corresponding to classical aeronautics convention and coherent with Fly view

src/ui/map3D/Pixhawk3DWidget.cc

@@ -374,9 +374,10 @@ Pixhawk3DWidget::attitudeChanged(UASInterface* uas,
     }
 
     // update system attitude
-    osg::Quat q(-yaw, osg::Vec3d(0.0f, 0.0f, 1.0f),
-                pitch, osg::Vec3d(1.0f, 0.0f, 0.0f),
-                roll, osg::Vec3d(0.0f, 1.0f, 0.0f));
+    osg::Quat q(roll, osg::Vec3d(0.0f, 1.0f, 0.0f),
+               pitch, osg::Vec3d(1.0f, 0.0f, 0.0f),
+                -yaw, osg::Vec3d(0.0f, 0.0f, 1.0f)
+                );
     m3DWidget->systemGroup(systemId)->attitude()->setAttitude(q);
 }