Fog.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 __FOG_H__
#define __FOG_H__

#include "X3DBindableNode.h"
#include "X3DFogObject.h"

namespace H3D {
  class H3DAPI_API Fog : 
    public X3DBindableNode,
    public X3DFogObject {
  public:
    Fog( Inst< SFSetBind > _set_bind         = 0,
         Inst< SFNode    > _metadata         = 0,
         Inst< SFTime    > _bindTime         = 0,
         Inst< SFBool    > _isBound          = 0,
         Inst< SFColor   > _color            = 0,
         Inst< SFString  > _fogType          = 0,
         Inst< SFFloat   > _visibilityRange  = 0 );

    static inline Fog *getActive() {
      return static_cast< Fog * >( X3DBindableNode::getActive( "Fog" ) );
    }

    virtual void renderFog();

#ifdef USE_HAPTICS
    virtual void traverseSG( TraverseInfo &ti ) {
      Matrix3f m = ti.getAccForwardMatrix().getScaleRotationPart();
      Vec3f scaled_v = m * Vec3f( 0, 0, 1 );
      scale_local_to_global = scaled_v.length();
    }
#endif

    static H3DNodeDatabase database;
  protected:
    H3DFloat scale_local_to_global;

  };
}

#endif

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