relativelocation.hpp

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/*
  RELATIVELOCATION.hpp  -  Placement implementation attaching MObjects relative to another one

  Copyright (C)         Lumiera.org
    2008,               Hermann Vosseler <Ichthyostega@web.de>

  This program 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.

  This program 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 this program; if not, write to the Free Software
  Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.

*/


#ifndef MOBJECT_SESSION_RELATIVELOCATION_H
#define MOBJECT_SESSION_RELATIVELOCATION_H

#include "steam/mobject/placement-ref.hpp"
#include "steam/mobject/session/locatingpin.hpp"




namespace steam {
namespace mobject {
namespace session {
  
  using lib::time::Offset;
  
  
  class RelativeLocation : public LocatingPin
    {
//        const PMO & anchor_;  ////////////TODO: ooooops, this is a nasty design problem!!!
      
      const PlaRef anchor_;
      
    public:
      
      enum RelType
      { SAMETIME    
      , ATTACH      
      };
      
    protected:
      RelativeLocation (PlaRef const& a, Offset const& ofs) : anchor_(a), offset_(ofs) { }
      friend class LocatingPin;
      
      RelType relType;
      
      Offset offset_;
      //TODO: suitable representation?
      
      
      virtual void intersect (LocatingSolution&)  const;
      
      
    public:
      virtual RelativeLocation* clone ()  const;
      
    };
  
  
  
}}} // namespace steam::mobject::session
#endif