From 189896a7abea7b3498224be5a65c38b5b2688686 Mon Sep 17 00:00:00 2001
From: mfranz <mfranz>
Date: Wed, 12 Apr 2006 11:12:36 +0000
Subject: [PATCH] only call occluder if the shadows were already initialized.
 This lead to a crash when using the model manager from XML files (which
 apparently nobody does, anyway ;-)  Now those models work (again), but have
 no shadows. Those placed at runtime (e.g. via ufo) still have a shadow.

---
 src/Model/modelmgr.cxx | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/src/Model/modelmgr.cxx b/src/Model/modelmgr.cxx
index bc69ad7a0..4359a70b5 100644
--- a/src/Model/modelmgr.cxx
+++ b/src/Model/modelmgr.cxx
@@ -81,7 +81,8 @@ FGModelMgr::add_model (SGPropertyNode * node)
       globals->get_sim_time_sec(), /*cache_object=*/false);
 
   model->init( object );
-  shadows->addOccluder((ssgBranch *)object, SGShadowVolume::occluderTypeTileObject);
+  if (shadows)
+      shadows->addOccluder((ssgBranch *)object, SGShadowVolume::occluderTypeTileObject);
 
 				// Set position and orientation either
 				// indirectly through property refs
@@ -258,7 +259,8 @@ FGModelMgr::Listener::childRemoved(SGPropertyNode * parent, SGPropertyNode * chi
 
     _mgr->_instances.erase(it);
     ssgBranch *branch = (ssgBranch *)instance->model->getSceneGraph();
-    shadows->deleteOccluder(branch);
+    if (shadows)
+        shadows->deleteOccluder(branch);
     globals->get_scenery()->get_scene_graph()->removeKid(branch);
 
     delete instance;