added the support for arbitrary attributes defined by artists that has a prefix called <tag>; i.e. tagHoliday Christmas2008 is tagged on the group node as <Tag> Holiday {Christmas2008}

pandatool/src/maya/maya_funcs.cxx

@@ -375,6 +375,40 @@ get_mat4d_attribute(MObject &node, const string &attribute_name,
   return true;
 }
 
+////////////////////////////////////////////////////////////////////
+//     Function: get_tag_attribute_names
+//  Description: artists should be able to set arbitrary tags.
+//               Query all the attributes on this object and return
+//               the lists of attribute names that has "tag" prefix
+////////////////////////////////////////////////////////////////////
+void
+get_tag_attribute_names(MObject &node, pvector<string> &tag_names) {
+  MStatus status;
+  MFnDependencyNode node_fn(node, &status);
+  if (!status) {
+    maya_cat.warning()
+      << "Object is a " << node.apiTypeStr() << ", not a DependencyNode.\n";
+    return;
+  }
+
+  string name = node_fn.name().asChar();
+  unsigned i;
+
+  for (i = 0; i < node_fn.attributeCount(); i++) {
+    MObject attr = node_fn.attribute(i, &status);
+    if (status) {
+      MFnAttribute attrib(attr, &status);
+      if (status) {
+        string attribute_name = attrib.name().asChar();
+        if (attribute_name.find("tag", 0) != string::npos) {
+          maya_cat.info() << ":" << name << ":" << " is tagged with <" 
+                          << attribute_name << ">" << endl;
+          tag_names.push_back(attribute_name);
+        }
+      }
+    }
+  }
+}
 ////////////////////////////////////////////////////////////////////
 //     Function: get_enum_attribute
 //  Description: Extracts the enum attribute from the MObject as a

pandatool/src/maya/maya_funcs.h

@@ -81,6 +81,9 @@ bool
 get_mat4d_attribute(MObject &node, const string &attribute_name,
                     LMatrix4d &value);
 
+void
+get_tag_attribute_names(MObject &node, pvector<string> &tag_names);
+
 bool
 get_enum_attribute(MObject &node, const string &attribute_name,
                    string &value);

pandatool/src/mayaegg/mayaEggLoader.cxx

@@ -1578,7 +1578,7 @@ bool MayaEggLoader::ConvertEggData(EggData *data, bool merge, bool model, bool a
       mesh->_transNode = parent;
     }
 
-    // [gjeon] add eggFlag attributes it any exists
+    // [gjeon] add eggFlag attributes if any exists
     for (unsigned i = 0; i < mesh->_eggObjectTypes.length(); i++) {
       MString attrName = "eggObjectTypes";
       attrName += (int)(i + 1);
@@ -1675,7 +1675,7 @@ bool MayaEggLoader::ConvertEggData(EggData *data, bool merge, bool model, bool a
       surface->_transNode = parent;
     }
 
-    // [gjeon] add eggFlag attributes it any exists   
+    // [gjeon] add eggFlag attributes if any exists   
     for (unsigned i = 0; i < surface->_eggObjectTypes.length(); i++) {
       MString attrName = "eggObjectTypes";
       attrName += (int)(i + 1);

pandatool/src/mayaegg/mayaNodeTree.cxx

@@ -390,6 +390,13 @@ get_egg_group(MayaNodeDesc *node_desc) {
       if (get_enum_attribute(dag_object, "eggObjectTypes3", object_type)) {
         egg_group->add_object_type(object_type);
       }
+      pvector<string> tag_attribute_names;
+      get_tag_attribute_names(dag_object, tag_attribute_names);
+      for (uint ti=0; ti < tag_attribute_names.size(); ti++) {
+        if (get_enum_attribute(dag_object, tag_attribute_names[ti], object_type)) {
+          egg_group->set_tag(tag_attribute_names[ti].substr(3), object_type);
+        }
+      }
 
       // Is the node flagged to be invisible?  If it is, it is tagged
       // with the "hidden" visibility flag, so it won't get converted