From c45717fef0c03ea6eac6179f51c47b9376b803b0 Mon Sep 17 00:00:00 2001
From: Robert Osfield <robert@openscenegraph.com>
Date: Wed, 23 Feb 2011 14:09:29 +0000
Subject: [PATCH] Inverted the orientation of the 't' transparency control so
 that it's full on at the bottom of the screen, and full transparent at the
 bottom.

---
 src/osgVolume/Property.cpp | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/osgVolume/Property.cpp b/src/osgVolume/Property.cpp
index 6826b0600..84055926d 100644
--- a/src/osgVolume/Property.cpp
+++ b/src/osgVolume/Property.cpp
@@ -350,7 +350,7 @@ bool PropertyAdjustmentCallback::handle(const osgGA::GUIEventAdapter& ea,osgGA::
             if (_updateTransparency && cpv._transparencyProperty.valid())
             {
                 OSG_INFO<<"Setting transparency to "<<v2<<std::endl;
-                cpv._transparencyProperty->setValue(v2);
+                cpv._transparencyProperty->setValue(1.0f-v2);
             }
 
             if (_updateSampleDensity && cpv._sampleDensityProperty.valid())