visarrowdisplay.h

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#ifndef visarrowdisplay_h
#define visarrowdisplay_h

/*+
________________________________________________________________________

 (C) dGB Beheer B.V.; (LICENSE) http://opendtect.org/OpendTect_license.txt
 Author:        N. Hemstra
 Date:          January 2005
 RCS:           $Id$
________________________________________________________________________


-*/

#include "vislocationdisplay.h"

namespace visBase { class Lines; class DrawStyle; };

namespace visSurvey
{

mExpClass(visSurvey) ArrowDisplay : public visSurvey::LocationDisplay
{
public:
    static ArrowDisplay*        create()
                                mCreateDataObj(ArrowDisplay);
                                ~ArrowDisplay();

    void                        setScene(visSurvey::Scene*);

    enum Type                   { Top, Bottom, Double };
    void                        setType(Type);
    Type                        getType() const;

    void                        setLineWidth( int );
    int                         getLineWidth() const;

    void                        setDisplayTransformation(const mVisTrans*);
    const mVisTrans*            getDisplayTransformation() const;

protected:

    virtual void                setPosition(int,const Pick::Location&,
                                            bool add=false);
    virtual void                removePosition(int);

    virtual int                 clickedMarkerIndex(
                                        const visBase::EventInfo& evi)const;

    void                        zScaleCB(CallBacker*);
    void                        dispChg(CallBacker*);
    
    visBase::VisualObject*      createLocation() const;
    bool                        hasDirection() const { return true; }

    void                        updateLineIndices(visBase::Lines*) const;

    Type                        arrowtype_;
    visBase::DrawStyle*         linestyle_;
    const mVisTrans*            displaytransform_;
    RefMan<visBase::DataObjectGroup>    group_;
};


} // namespace visSurvey

#endif