ObjsInAreaExplorer.h

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/* $Id: ObjsInAreaExplorer.h,v 1.3 2002/11/05 14:41:19 anonymous Exp $ */

#ifndef __OBJECTS_INSIDE_AREA_EXPLORER_H
#define __OBJECTS_INSIDE_AREA_EXPLORER_H

#include <esg/geometry/Geometry.h>
#include <esg/Group.h>
#include <esg/SceneGraphObject.h>
#include <esg/Definitions.h>
#include <esg/explorer/Explorer.h>

/*
 * Finds drawable objects (shapes) interfering given area.
 * Shapes are returned by the result() method, shape by shape
 * until NULL is retured.
 */

namespace esg {

class OGSCENE_EXPORT ObjsInAreaExplorer : public Explorer {
protected:
    struct TrObj {
        SceneGraphObject * pObject;
        Matrix4          * pTrMat;
    };
    
    Geometry*   _pArea;
    Geometry*   _pTrArea;
    List<TrObj> _foundObjects;

protected:
    virtual bool _iterate                   (SceneGraphObject&);
    virtual bool _process_leaf              (SceneGraphObject&);
    virtual void _accept_new_transformation (const Matrix4&);

    ObjsInAreaExplorer () {}
    
public:
    ObjsInAreaExplorer(const Geometry& /* area */);
    virtual ~ObjsInAreaExplorer ();

    SceneGraphObject* result (Matrix4&, bool&);
};

}; // namespace

#endif // __OBJECTS_INSIDE_AREA_EXPLORER_H

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