From 6df9479415141f4170bd60d18c3c07503b1dc018 Mon Sep 17 00:00:00 2001
From: david <david>
Date: Wed, 19 Jun 2002 03:25:40 +0000
Subject: [PATCH] Allow an empty virtual model, to which other submodels can be
 attached (when no path is specified).

---
 src/Model/model.cxx | 13 ++++++++-----
 1 file changed, 8 insertions(+), 5 deletions(-)

diff --git a/src/Model/model.cxx b/src/Model/model.cxx
index 3f1078cff..a61b23199 100644
--- a/src/Model/model.cxx
+++ b/src/Model/model.cxx
@@ -197,16 +197,19 @@ FG3DModel::init (const string &path)
       modelpath = modelpath.dir();
       modelpath.append(props.getStringValue("/path"));
     } else {
-      throw sg_exception("No path for model");
+      if (_model == 0)
+	_model = new ssgBranch;
     }
   }
 
                                 // Assume that textures are in
                                 // the same location as the XML file.
-  ssgTexturePath((char *)xmlpath.dir().c_str());
-  _model = (ssgBranch *)ssgLoad((char *)modelpath.c_str());
-  if (_model == 0)
-    throw sg_exception("Failed to load 3D model");
+  if (_model == 0) {
+    ssgTexturePath((char *)xmlpath.dir().c_str());
+    _model = (ssgBranch *)ssgLoad((char *)modelpath.c_str());
+    if (_model == 0)
+      throw sg_exception("Failed to load 3D model");
+  }
 
                                 // Set up the alignment node
   ssgTransform * align = new ssgTransform;
-- 
2.39.5