MeVis/ThirdParty/Sources/Inventor/inventor/lib/database/include/Inventor/bundles/SoNormalBundle.h

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/*
 *
 *  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/
 *
 */


/*
 * Copyright (C) 1990,91   Silicon Graphics, Inc.
 *
 _______________________________________________________________________
 ______________  S I L I C O N   G R A P H I C S   I N C .  ____________
 |
 |   $Revision: 1.1.1.1 $
 |
 |   Description:
 |      This file defines the SoNormalBundle class.
 |
 |   Author(s)          : Paul S. Strauss
 |
 ______________  S I L I C O N   G R A P H I C S   I N C .  ____________
 _______________________________________________________________________
 */

#ifndef  _SO_NORMAL_BUNDLE
#define  _SO_NORMAL_BUNDLE

#include <Inventor/bundles/SoBundle.h>
#include <Inventor/elements/SoGLNormalElement.h>
#include <Inventor/misc/SoNormalGenerator.h>


SoEXTENDER class INVENTOR_API SoNormalBundle : public SoBundle {

  public:
    SoNormalBundle(SoAction *action, SbBool forRendering);

    ~SoNormalBundle();

    SbBool              shouldGenerate(int numNeeded);

    void                initGenerator(int initialNum = 100);


    void                beginPolygon()
        { generator->beginPolygon(); }
    void                polygonVertex(const SbVec3f &point)
        { generator->polygonVertex(point); }
    void                endPolygon()
        { generator->endPolygon(); }

    void                triangle(const SbVec3f &p1,
                                 const SbVec3f &p2,
                                 const SbVec3f &p3)
        { generator->triangle(p1, p2, p3); }

    void                generate(int startIndex = 0,
                                 SbBool addToState=TRUE);

    const SbVec3f *     getGeneratedNormals() const
        { return generator->getNormals(); }
    int                 getNumGeneratedNormals() const
        { return generator->getNumNormals(); }


    void                set(int32_t numNormals, const SbVec3f *normals);

    const SbVec3f &     get(int index) const    { return normElt->get(index); }

    void                send(int index) const   { GLNormElt->send(index); }

  SoINTERNAL public:
    SoNormalGenerator   *generator;     

  private:
    const SoNormalElement       *normElt;
    const SoGLNormalElement     *GLNormElt;

    SbBool              isRendering;    
    SbBool              pushedState;    
    SoNode              *currentNode;   
};

#endif /* _SO_NORMAL_BUNDLE */