Billboard.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 __BILLBOARD_H__
#define __BILLBOARD_H__

#include "MatrixTransform.h"

namespace H3D {

  class H3DAPI_API Billboard : public MatrixTransform {
  public:
    
    class H3DAPI_API SFMatrix4f: 
      public TypedField< H3D::SFMatrix4f,
                         Types< SFVec3f, SFVec3f, SFVec3f > >{
    protected:
 
      virtual void update();
    };


    Billboard( Inst< MFChild             > _addChildren      = 0,
               Inst< MFChild             > _removeChildren   = 0,
               Inst< MFChild             > _children         = 0,
               Inst< SFNode              > _metadata         = 0,
               Inst< SFBound             > _bound            = 0,
               Inst< SFVec3f             > _bboxCenter       = 0,
               Inst< SFVec3f             > _bboxSize         = 0,
               Inst< SFTransformedBound  > _transformedBound = 0,    
               Inst< SFMatrix4f          > _matrix           = 0, 
               Inst< SFVec3f             > _axisOfRotation   = 0 );

#ifdef USE_HAPTICS
    virtual void traverseSG( TraverseInfo &ti );
#endif

    auto_ptr< SFVec3f > axisOfRotation;

    static H3DNodeDatabase database;

  protected:
    // The position of the viewpoint in local coordinates of the Billboard
    // node. This field will be set in traverseSG().
    auto_ptr< SFVec3f > vpPosition;

    // The up vector of the viewpoint in local coordinates of the Billboard
    // node. This field will be set in traverseSG().
    auto_ptr< SFVec3f > vpUp;
  };
}

#endif

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