vistexturerect.h

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#ifndef vistexturerect_h
#define vistexturerect_h

/*+
________________________________________________________________________

 (C) dGB Beheer B.V.; (LICENSE) http://opendtect.org/OpendTect_license.txt
 Author:        Kris Tingdahl
 Date:          Jan 2002
 RCS:           $Id$
________________________________________________________________________


-*/


#include "visbasemod.h"
#include "visobject.h"
#include "vistransform.h"


namespace osgGeo { class TexturePlaneNode; }

namespace visBase
{

class TextureChannels;

mExpClass(visBase) TextureRectangle : public VisualObjectImpl
{
public:
    static TextureRectangle*    create()
                                mCreateDataObj(TextureRectangle);

    void                        setTextureChannels(visBase::TextureChannels*);
    visBase::TextureChannels*   getTextureChannels();

    void                        freezeDisplay(bool yn=true);
    bool                        isDisplayFrozen() const;
    void                        setTextureShift(const Coord&);
    Coord                       getTextureShift() const;

    void                        setTextureGrowth(const Coord&);
    Coord                       getTextureGrowth() const;

    void                        setCenter(const Coord3& center);
    void                        setWidth(const Coord3& width);
    Coord3                      getWidth() const;
    Coord3                      getCenter() const;

    void                        setRotation(const Coord3& spanvec0,
                                            const Coord3& spanvec1);
    void                        setRotationAndWidth(const Coord3& spanvec0,
                                                    const Coord3& spanvec1);
    const Coord3&               getSpanningVector(int idx) const;

    void                        swapTextureAxes(bool yn=true);
    bool                        areTextureAxesSwapped() const;

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

    // deprecated
    void                        getTextureCoordinates(TypeSet<Coord3>&) const;

protected:
                                ~TextureRectangle();

    RefMan<const mVisTrans>     displaytrans_;

    osgGeo::TexturePlaneNode*   textureplane_;
    RefMan<TextureChannels>     channels_;

    Coord3                      spanvec0_;
    Coord3                      spanvec1_;

public:

    int                         getNrTextures() const;
    const unsigned char*        getTextureData() const;

    mStruct(visBase) TextureDataInfo
    {
        TypeSet<Coord3> coords_;
        TypeSet<Coord>  texcoords_;
        TypeSet<int>    ps_;
        void            setEmpty()      { coords_.erase(); texcoords_.erase();
                                          ps_.erase(); }
    };

    bool                        getTextureDataInfo(int tidx,
                                            TextureDataInfo& texinfo) const;
    bool                        getTextureInfo(int& width,int& height,
                                               int& pixsize) const;
};

};

#endif