From 8c9609b331b0740c0978e3a4bea34ec96ba138bb Mon Sep 17 00:00:00 2001
From: Robert Osfield <robert@openscenegraph.com>
Date: Wed, 20 Mar 2002 11:22:06 +0000
Subject: [PATCH] Added the fallback of intersecting with the a drawables
 bounding box, if the drawable isn't a GeoSet and hence supported by the
 IntersectVisitor's GeoSet primitive intersections code.

---
 src/osgUtil/IntersectVisitor.cpp | 34 ++++++++++++++++++++++++++++++++
 1 file changed, 34 insertions(+)

diff --git a/src/osgUtil/IntersectVisitor.cpp b/src/osgUtil/IntersectVisitor.cpp
index e37ef013b..44b50792c 100644
--- a/src/osgUtil/IntersectVisitor.cpp
+++ b/src/osgUtil/IntersectVisitor.cpp
@@ -478,6 +478,40 @@ void IntersectVisitor::apply(Geode& geode)
     {
         osg::GeoSet* gset = dynamic_cast<osg::GeoSet*>(geode.getDrawable(i));
         if (gset) intersect(*gset);
+        else
+        {
+            IntersectState* cis = _intersectStateStack.back().get();
+
+            // simply default to intersecting with bounding box.
+            for(IntersectState::LineSegmentList::iterator sitr=cis->_segList.begin();
+                sitr!=cis->_segList.end();
+                ++sitr)
+            {
+                if (sitr->second->intersect(geode.getDrawable(i)->getBound()))
+                {
+                    Hit hit;
+                    hit._nodePath = _nodePath;
+                    hit._matrix = cis->_matrix;
+                    hit._inverse = cis->_inverse;
+                    hit._geoset = NULL;
+                    if (_nodePath.empty()) hit._geode = NULL;
+                    else hit._geode = dynamic_cast<Geode*>(_nodePath.back());
+
+                    hit._ratio = 0.0f;
+                    hit._primitiveIndex = -1;
+                    hit._originalLineSegment = sitr->first;
+                    hit._localLineSegment = sitr->second;
+
+                    hit._intersectPoint = geode.getDrawable(i)->getBound().center();
+
+                    hit._intersectNormal.set(0.0,0.0,1.0);
+
+                    _segHitList[sitr->first.get()].push_back(hit);
+                    std::sort(_segHitList[sitr->first.get()].begin(),_segHitList[sitr->first.get()].end());
+
+                }
+            }
+        }
     }
     
     leaveNode();