vistexturechannel2voldata.h

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#pragma once

/*+
________________________________________________________________________

 (C) dGB Beheer B.V.; (LICENSE) http://opendtect.org/OpendTect_license.txt
 Author:        Karthika
 Date:          Nov 2009
________________________________________________________________________


-*/

#include "vistexturechannel2rgba.h"
#include "coltabsequence.h"


namespace visBase
{

mExpClass(visBase) TextureChannel2VolData : public TextureChannel2RGBA
{
public:
    typedef ColTab::Sequence    Sequence;
    static TextureChannel2VolData*      create()
                        mCreateDataObj(TextureChannel2VolData);

    const osg::Image*   createRGBA() const              { return 0; }
    bool                canSetSequence() const  { return true; }
    void                setSequence(int channel,const Sequence&);
    const Sequence&     getSequence(int channel) const;

    void                setEnabled(int ch, bool yn);
    bool                isEnabled(int ch) const;

    bool                canUseShading() const   { return false; }
    bool                usesShading() const     { return false; }
    int                 maxNrChannels() const   { return 1; }
    int                 minNrChannels() const   { return 1; }

    MappedTextureDataSet* createMappedDataSet() const;

protected:
                        ~TextureChannel2VolData();

    void                setChannels(TextureChannels*);
    void                notifyChannelChange();
    void                update();
    void                makeColorTables();
    void                seqModifCB(CallBacker*)         { update(); }

    ConstRefMan<ColTab::Sequence> sequence_;
    bool                enabled_;

/*  OSG-TODO: Port to OSG if class is prolongated
    SoTransferFunction* transferfunc_;
    virtual SoNode*     gtInvntrNode();
*/
};

} //namespace