uiworld2ui.h

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#pragma once

/*+
________________________________________________________________________

 (C) dGB Beheer B.V.; (LICENSE) http://opendtect.org/OpendTect_license.txt
 Author:        A.H. Bril
 Date:          13/8/2000
________________________________________________________________________

-*/
#include "uitoolsmod.h"
#include "uigeom.h"

class SurveyInfo;

mExpClass(uiTools) World2UiData
{
public:

                World2UiData();
                World2UiData( uiSize s, const uiWorldRect& w );
                World2UiData( const uiWorldRect& w, uiSize s );

    bool        operator ==( const World2UiData& w2ud ) const;
    bool        operator !=( const World2UiData& w2ud ) const;

    uiSize      sz;
    uiWorldRect wr;
};


mExpClass(uiTools) uiWorld2Ui
{
public:

                        uiWorld2Ui();
                        uiWorld2Ui( const uiSize& sz, const uiWorldRect& wr );
                        uiWorld2Ui( const uiRect& rc, const uiWorldRect& wr );
                        uiWorld2Ui( const uiWorldRect& wr, const uiSize& sz );
                        uiWorld2Ui( const World2UiData& w );

    bool                operator==(const uiWorld2Ui& ) const;

    void                set( const World2UiData& w );
    void                set( const uiWorldRect& wr, const uiSize& sz );
    void                set( const uiSize& sz, const uiWorldRect& wr );
    void                set( const uiRect& rc, const uiWorldRect& wr );
    void                set( uiRect rc, const SurveyInfo& si );

    void                setRemap( const uiSize& sz, const uiWorldRect& wrdrc );
    void                setRemap( const uiRect& rc, const uiWorldRect& wrdrc );
    void                setCartesianRemap( const uiSize& sz,
                            float minx, float maxx, float miny, float maxy );
    void                setCartesianRemap( const uiRect& rc,
                            float minx, float maxx, float miny, float maxy );
                        
    void                resetUiRect( const uiRect& rc );

    const World2UiData& world2UiData() const;


    uiWorldPoint        transform( uiPoint p ) const;
    uiWorldRect         transform( uiRect area ) const;
    uiPoint             transform( uiWorldPoint p ) const;
    uiRect              transform( uiWorldRect area ) const;
                        // Since the compiler will be confused if two functions
                        // only differ in return type, Geom::Point2D<float> is
                        // set rather than be returned.
    void                transform( const uiPoint& upt,
                                   Geom::Point2D<float>& pt ) const;
    void                transform( const Geom::Point2D<float>& pt,
                                   uiPoint& upt) const;
    
    int                 toUiX( float wrdx ) const;
    int                 toUiY( float wrdy ) const;
    float               toWorldX( int uix ) const;
    float               toWorldY( int uiy ) const;

    uiWorldPoint        origin() const;
    uiWorldPoint        worldPerPixel() const;
                        
    void                getWorldXRange( float& xmin, float& xmax ) const;
    void                getWorldYRange( float& ymin, float& ymax ) const;

protected:

    World2UiData        w2ud;

    uiWorldPoint        p0;
    uiWorldPoint        fac;

    uiWorldRect         wrdrect_; 
    uiSize              uisize_;
    uiPoint             uiorigin;

private:
                        void getAppropriateRange( float min, float max,
                                                 float& newmin, float& newmax );
};