From e346396abd8ba42b62dc4bef25232916d229137d Mon Sep 17 00:00:00 2001
From: Robert Osfield <robert@openscenegraph.com>
Date: Tue, 22 May 2007 14:00:51 +0000
Subject: [PATCH] From Roger James, "Here is a small fix for the ac3d plugin
 geode.cpp. The fix is entirely localised to
 ac3d::Geode::OutputTriangleStripDARR.

It resolves an issue when processing a DrawArrayLengths with multiple lengths where the vertex indices were incorrect for all but the first chunk."
---
 src/osgPlugins/ac/Geode.cpp | 23 +++++++++++------------
 1 file changed, 11 insertions(+), 12 deletions(-)

diff --git a/src/osgPlugins/ac/Geode.cpp b/src/osgPlugins/ac/Geode.cpp
index cc97fa3f7..974d05aef 100644
--- a/src/osgPlugins/ac/Geode.cpp
+++ b/src/osgPlugins/ac/Geode.cpp
@@ -252,25 +252,24 @@ void Geode::OutputTriangleStripDARR(const int iCurrentMaterial, const unsigned i
     unsigned int vindex = drawArrayLengths->getFirst();
     for(osg::DrawArrayLengths::const_iterator primItr = drawArrayLengths->begin(); primItr <drawArrayLengths->end(); ++primItr)
     {
-        unsigned int localPrimLength;
+        // RFJ!!!!!!!!!! fixes for indexing
+        int localPrimLength= *primItr;
         bool evenodd=true;
-        localPrimLength = 3;
         
-        for(GLsizei primCount = 0; primCount < *primItr-2; ++primCount)
+        for(GLsizei primCount = 0; primCount < localPrimLength - 2; ++primCount)
         {
-            OutputSurfHead(iCurrentMaterial,surfaceFlags,localPrimLength, fout);
+            OutputSurfHead(iCurrentMaterial, surfaceFlags, 3, fout);
             if (evenodd) {
-                OutputVertex(vindex, pVertexIndices, pTexCoords, pTexIndices, fout);
-                OutputVertex(vindex+1, pVertexIndices, pTexCoords, pTexIndices, fout);
+                OutputVertex(vindex + primCount, pVertexIndices, pTexCoords, pTexIndices, fout);
+                OutputVertex(vindex + primCount + 1, pVertexIndices, pTexCoords, pTexIndices, fout);
             } else {
-                OutputVertex(vindex+1, pVertexIndices, pTexCoords, pTexIndices, fout);
-                OutputVertex(vindex, pVertexIndices, pTexCoords, pTexIndices, fout);
+                OutputVertex(vindex + primCount + 1 , pVertexIndices, pTexCoords, pTexIndices, fout);
+                OutputVertex(vindex + primCount, pVertexIndices, pTexCoords, pTexIndices, fout);
             }
-            OutputVertex(vindex+2, pVertexIndices, pTexCoords, pTexIndices, fout);
-            ++vindex;
+            OutputVertex(vindex + primCount + 2, pVertexIndices, pTexCoords, pTexIndices, fout);
             evenodd=!evenodd;
-        }
-        
+        }       
+        vindex += localPrimLength;
     }
 }
 void Geode::OutputTriangleFanDARR(const int iCurrentMaterial, const unsigned int surfaceFlags,