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Initial check-in based on 2.1.5 (SGI IRIX) source tree.

/*
 *
 *  Copyright (C) 2000 Silicon Graphics, Inc.  All Rights Reserved. 
 *
 *  This library is free software; you can redistribute it and/or
 *  modify it under the terms of the GNU Lesser General Public
 *  License as published by the Free Software Foundation; either
 *  version 2.1 of the License, or (at your option) any later version.
 *
 *  This library 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
 *  Lesser General Public License for more details.
 *
 *  Further, this software is distributed without any warranty that it is
 *  free of the rightful claim of any third person regarding infringement
 *  or the like.  Any license provided herein, whether implied or
 *  otherwise, applies only to this software file.  Patent licenses, if
 *  any, provided herein do not apply to combinations of this program with
 *  other software, or any other product whatsoever.
 * 
 *  You should have received a copy of the GNU Lesser General Public
 *  License along with this library; if not, write to the Free Software
 *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 *
 *  Contact information: Silicon Graphics, Inc., 1600 Amphitheatre Pkwy,
 *  Mountain View, CA  94043, or:
 * 
 *  http://www.sgi.com 
 * 
 *  For further information regarding this notice, see: 
 * 
 *  http://oss.sgi.com/projects/GenInfo/NoticeExplan/
 *
 */

/////////////////////////////////////////////////////////////////////////////
//
// IfTypes class: contains static methods regarding node types.
//
/////////////////////////////////////////////////////////////////////////////

#ifndef  _IF_TYPES_
#define  _IF_TYPES_

#include <Inventor/SoType.h>

class SoTypeList;

class IfTypes {

  public:
    // Fills in the given type list with all node types that should be
    // considered "shapes" when collecting nodes.
    static void		getShapeTypes(SoTypeList *types);

    // Returns TRUE if the given node type is a group that should
    // never be processed underneath
    static SbBool	isOpaqueGroupType(const SoType &type);

    // Returns TRUE if the given type is a shape that cannot be
    // flattened
    static SbBool	isUnflattenableShape(const SoType &type);

    // Returns TRUE if the given type should be considered a shape
    static SbBool	isShape(const SoType &type);
};

#endif /* _IF_TYPES_ */