Scene.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 __SCENE_H__
#define __SCENE_H__

#include "X3DChildNode.h"
#include "H3DWindowNode.h"

namespace H3D {

  class H3DAPI_API Scene : public Node {
  public:

    typedef TypedMFNode< H3DWindowNode > MFWindow;
    typedef TypedSFNode< X3DChildNode > SFChildNode;

    Scene( Inst< SFChildNode > _sceneRoot   = 0,
           Inst< MFWindow    > _window      = 0,
           Inst< SFFloat     > _frameRate   = 0 );

    ~Scene();

    void setActive( bool _active ) {
      active = _active;
    }

    bool isActive() {
      return active;
    }

    virtual void idle();

    static void mainLoop();
    
    auto_ptr< SFChildNode > sceneRoot;

    auto_ptr< MFWindow >  window;

    auto_ptr< SFFloat >  frameRate;

    static SFTime *time;
  
    static set< Scene* > scenes;

    static H3DNodeDatabase database;

  protected:
    class EventSink: public Field {
    public:
      EventSink() {
        setName( "Scene::eventSink" );
      }
    protected:
      virtual void update();
    };
  public:
    static EventSink *eventSink;

  private:
    bool active;
    // the time of the start of the last loop.
    TimeStamp last_time;
#ifdef USE_HAPTICS
    // the TraverseInfo instance from the previous scenegraph loop.
    TraverseInfo *last_traverseinfo;
#endif
  };
}

#endif

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