SoGetBoundingBoxAction.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 
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 *  For further information regarding this notice, see: 
 * 
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/*
 * 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:
 |      Defines the SoGetBoundingBoxAction 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_GET_BOUNDING_BOX_ACTION_
#define  _SO_GET_BOUNDING_BOX_ACTION_

#include <Inventor/system/SbSystem.h>
#include <Inventor/SbBox.h>
#include <Inventor/SbViewportRegion.h>
#include <Inventor/actions/SoSubAction.h>




class INVENTOR_API SoGetBoundingBoxAction : public SoAction {

    SO_ACTION_HEADER(SoGetBoundingBoxAction);

  public:

    SoGetBoundingBoxAction(const SbViewportRegion &viewportRegion);

    virtual ~SoGetBoundingBoxAction();

    void                setViewportRegion(const SbViewportRegion &newRegion);

    const SbViewportRegion &getViewportRegion() const   { return vpRegion; }

    SbBox3f             getBoundingBox() const  { return box.project(); }

    SbXfBox3f &         getXfBoundingBox()      { return box; }

    const SbVec3f &     getCenter() const;

    void                setInCameraSpace(bool flag)   { cameraSpace = flag; }

    bool                isInCameraSpace() const         { return cameraSpace; }

    enum ResetType {
        TRANSFORM      = 0x01,      
        BBOX           = 0x02,      
        ALL            = 0x03       
    };
    void                setResetPath(const SoPath *path,
                                     bool resetBefore = TRUE,
                                     ResetType what = ALL);
    const SoPath *      getResetPath() const    { return resetPath; }
    bool                isResetPath() const     { return( resetPath != NULL); }
    bool                isResetBefore() const   { return resetBefore; }
    SoGetBoundingBoxAction::ResetType getWhatReset() const { return resetWhat;}

  SoEXTENDER public:

    void                checkResetBefore();
    void                checkResetAfter();

    void                extendBy(const SbBox3f &box);
    void                extendBy(const SbXfBox3f &box);

    void                setCenter(const SbVec3f &center,
                                  bool transformCenter);
    bool                isCenterSet() const;
    void                resetCenter();

  SoINTERNAL public:
    static void         initClass();

  protected:
    virtual void        beginTraversal(SoNode *node);

  private:
    SbXfBox3f           box;            
    SbVec3f             center;         
    bool                cameraSpace;    
    const SoPath        *resetPath;     
    bool                resetBefore;    
    ResetType           resetWhat;      
    SbViewportRegion    vpRegion;       
    bool                centerSet;      

    void                checkReset(bool resetBefore);
};

#endif /* _SO_GET_BOUNDING_BOX_ACTION_ */