The GtkRadiant sources as originally released under the GPL license.

contrib/camera/renderer.h

@@ -0,0 +1,46 @@
+/*
+Copyright (C) 1999-2006 Id Software, Inc. and contributors.
+For a list of contributors, see the accompanying CONTRIBUTORS file.
+
+This file is part of GtkRadiant.
+
+GtkRadiant is free software; you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation; either version 2 of the License, or
+(at your option) any later version.
+
+GtkRadiant is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with GtkRadiant; if not, write to the Free Software
+Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA  02110-1301  USA
+*/
+
+/*
+Camera plugin for GtkRadiant
+Copyright (C) 2002 Splash Damage Ltd.
+*/
+
+class CRenderer : public IGL2DWindow, public IGL3DWindow {
+public:
+	CRenderer();
+  virtual ~CRenderer();
+
+protected:
+  int refCount;
+
+public:
+	void Register();
+	void UnRegister();
+	void Initialize();
+  void Draw2D( VIEWTYPE vt );
+	void Draw3D();
+
+	void IncRef() { refCount++; }
+	void DecRef() { refCount--; if (refCount <= 0) delete this; }
+
+  bool m_bHooked;
+};