From 40d920ddc9fec75f5e27250eea05bfdd7e00218b Mon Sep 17 00:00:00 2001
From: ehofman <ehofman>
Date: Fri, 12 Mar 2004 10:09:09 +0000
Subject: [PATCH] Unselect the branch if the object has become fully
 translucent.

---
 simgear/scene/model/animation.cxx | 14 ++++++++++----
 1 file changed, 10 insertions(+), 4 deletions(-)

diff --git a/simgear/scene/model/animation.cxx b/simgear/scene/model/animation.cxx
index 67c69cb0..c5bbba8a 100644
--- a/simgear/scene/model/animation.cxx
+++ b/simgear/scene/model/animation.cxx
@@ -109,10 +109,16 @@ change_alpha( ssgBase *_branch, float _blend )
 
   int num_colors = ((ssgLeaf *)_branch)->getNumColours();
 
-  for (i = 0; i < num_colors; i++)
-  {
-    float *color =  ((ssgLeaf *)_branch)->getColour(i);
-    color[3] = _blend;
+  if ( _blend == 1.0 ) {	// fully translucent.
+    for (i = 0; i < num_colors; i++)
+      ((ssgSelector *)_branch)->select(0x0000); // deselect item.
+  } else {
+    for (i = 0; i < num_colors; i++)
+    {
+      ((ssgSelector *)_branch)->select(0xffff);
+      float *color =  ((ssgLeaf *)_branch)->getColour(i);
+      color[3] = _blend;
+    }
   }
 }