From 05703a92733d210dab37b5f14c3bca1a36366b18 Mon Sep 17 00:00:00 2001
From: Robert Osfield <robert@openscenegraph.com>
Date: Wed, 26 Oct 2005 20:22:59 +0000
Subject: [PATCH] Added friend declarations of nested classes to prevent
 compile problems under VS6.0

---
 include/osgUtil/TangentSpaceGenerator | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/include/osgUtil/TangentSpaceGenerator b/include/osgUtil/TangentSpaceGenerator
index 05936daea..017dfb28a 100644
--- a/include/osgUtil/TangentSpaceGenerator
+++ b/include/osgUtil/TangentSpaceGenerator
@@ -121,7 +121,11 @@ protected:
         virtual ~VectorsComputerUsingIndices() {}
     };
 
-private:
+    // declare as friends so that may operator on TangentSpaceGenerator protected member variables.
+    friend class BasisVectorsComputer;
+    friend class VectorsComputerNoIndices;
+    friend class VectorsComputerUsingIndices;
+
     osg::ref_ptr<osg::Vec4Array> T_;
     osg::ref_ptr<osg::Vec4Array> B_;
     osg::ref_ptr<osg::Vec4Array> N_;