BooleanFilter.h

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//    Copyright 2004, SenseGraphics AB
//
//    This file is part of H3D API.
//
//    H3D API 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.
//
//    H3D API 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 H3D API; if not, write to the Free Software
//    Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
//
//    A commercial license is also available. Please contact us at 
//    www.sensegraphics.com for more information.
//
//
//
#ifndef __BOOLEANFILTER_H__
#define __BOOLEANFILTER_H__

#include "X3DChildNode.h"
#include "SFBool.h"

namespace H3D {

  class H3DAPI_API BooleanFilter : public X3DChildNode {
  public:
    class H3DAPI_API NegateSFBool:  public SFBool {
      virtual void update() {
        BooleanFilter *bf = 
          static_cast< BooleanFilter * >( getOwner() );
        value = 
          !static_cast< SFBool * >( event.ptr )->getValue( bf->id );
      }
    };

    friend class NegateSFBool;

    class H3DAPI_API SetBoolean: public AutoUpdate< SFBool > {
    public:
      virtual void setValue( const bool &b, int id = 0 ) {
        SFBool::setValue( b );
        BooleanFilter *bf = 
          static_cast< BooleanFilter * >( getOwner() );
        if( value )
          bf->inputTrue->setValue( true, bf->id );
        else 
          bf->inputFalse->setValue( false, bf->id );
      }
    protected:
      virtual void update() {
        SFBool::update();
        BooleanFilter *bf = 
          static_cast< BooleanFilter * >( getOwner() );
        if( value )
          bf->inputTrue->setValue( true, bf->id );
        else 
          bf->inputFalse->setValue( false, bf->id );
      }
    };

    friend class SetBoolean;

    BooleanFilter( Inst< SFNode       > _metadata    = 0,
                   Inst< SetBoolean   > _set_boolean = 0,
                   Inst< SFBool       > _inputFalse  = 0,
                   Inst< NegateSFBool > _inputNegate = 0,
                   Inst< SFBool       > _inputTrue   = 0 );

    auto_ptr< SetBoolean > set_boolean;

    auto_ptr< SFBool > inputFalse;

    auto_ptr< NegateSFBool > inputNegate;

    auto_ptr< SFBool > inputTrue;

    static H3DNodeDatabase database;
  };
}

#endif

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