From 397b886289d339dfafa4b183c34b947bef791256 Mon Sep 17 00:00:00 2001
From: David Rose <david@ddrose.com>
Date: Sun, 20 Jul 2003 15:50:00 +0000
Subject: [PATCH] add steal_vrefs

---
 panda/src/egg/eggGroup.cxx | 20 ++++++++++++++++++++
 panda/src/egg/eggGroup.h   |  1 +
 2 files changed, 21 insertions(+)

diff --git a/panda/src/egg/eggGroup.cxx b/panda/src/egg/eggGroup.cxx
index bc504c15cc..3116d85879 100644
--- a/panda/src/egg/eggGroup.cxx
+++ b/panda/src/egg/eggGroup.cxx
@@ -505,6 +505,26 @@ get_vertex_membership(const EggVertex *vert) const {
   }
 }
 
+////////////////////////////////////////////////////////////////////
+//     Function: EggGroup::steal_vrefs
+//       Access: Public
+//  Description: Moves all of the vertex references from the indicated
+//               other group into this one.  If a given vertex was
+//               previously shared by both groups, the relative
+//               memberships will be summed.
+////////////////////////////////////////////////////////////////////
+void EggGroup::
+steal_vrefs(EggGroup *other) {
+  nassertv(other != this);
+  VertexRef::const_iterator vri;
+  for (vri = other->vref_begin(); vri != other->vref_end(); ++vri) {
+    EggVertex *vert = (*vri).first;
+    double membership = (*vri).second;
+    ref_vertex(vert, membership);
+  }
+  other->unref_all_vertices();
+}
+
 
 #ifndef NDEBUG
 
diff --git a/panda/src/egg/eggGroup.h b/panda/src/egg/eggGroup.h
index 27ff40bb60..b0bf95e39a 100644
--- a/panda/src/egg/eggGroup.h
+++ b/panda/src/egg/eggGroup.h
@@ -198,6 +198,7 @@ public:
   void unref_vertex(EggVertex *vert);
   void unref_all_vertices();
   double get_vertex_membership(const EggVertex *vert) const;
+  void steal_vrefs(EggGroup *other);
 
   INLINE VertexRef::const_iterator vref_begin() const;
   INLINE VertexRef::const_iterator vref_end() const;