OSG Reader and Writer for BTG files

[simgear.git] / simgear / scene / model / model.cxx

diff --git a/simgear/scene/model/model.cxx b/simgear/scene/model/model.cxx
index 1d278f7ee63faeb0647185340c8f7c057a6a6bd4..4a2349be603cac35bf1aa7153c83d789577647fa 100644 (file)
--- a/simgear/scene/model/model.cxx
+++ b/simgear/scene/model/model.cxx
@@ -207,6 +207,15 @@ public:
   readNode(const std::string& fileName,
            const osgDB::ReaderWriter::Options* opt)
   {
+    osgDB::Registry* registry = osgDB::Registry::instance();
+    osgDB::ReaderWriter::ReadResult res;
+    // The BTG loader automatically looks for ".btg.gz" if a file with
+    // the .btg extension doesn't exist. Also, we don't want to add
+    // nodes, run the optimizer, etc. on the btg model.So, let it do
+    // its thing.
+    if (osgDB::equalCaseInsensitive(osgDB::getFileExtension(fileName), "btg")) {
+      return registry->readNodeImplementation(fileName, opt);
+    }
     std::string absFileName = osgDB::findDataFile(fileName);
     if (!osgDB::fileExists(absFileName)) {
       SG_LOG(SG_IO, SG_ALERT, "Cannot find model file \""
@@ -214,8 +223,6 @@ public:
       return osgDB::ReaderWriter::ReadResult::FILE_NOT_FOUND;
     }
 
-    osgDB::Registry* registry = osgDB::Registry::instance();
-    osgDB::ReaderWriter::ReadResult res;
     res = registry->readNodeImplementation(absFileName, opt);
     if (!res.validNode())
       return res;