RulerModel.h

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#pragma once
#include <NDEVR/Model.h>
#if NDEVR_RULER_MODEL
namespace NDEVR
{
    /**--------------------------------------------------------------------------------------------------
    \brief A Model which can be used to show lengths of data between two points.
    **/
    class RulerModel : public Model
    {
    public:
        static const int MARGIN = 4;
        enum RulerOrientation
        {
              e_ruler_horizontal
            , e_ruler_vertical
        };
 
    public:
        RulerModel(RulerOrientation orientation, bool is_left_or_top, const Model& parent);
        ~RulerModel();
    public:
        void updateRuler();
    protected:
        Model minorLinesModel();
        Model majorLinesModel();
        Model labelRootModel();
        void setAxis();
        Bounds<3, fltp08> worldBounds() const;
        Vector<2, fltp08> worldSpan() const;
        Vector<2, fltp08> scale() const;
        Vector<2, fltp08> worldOffset() const;
        Vector<2, fltp08> worldGridSpacing() const;
        fltp08 convertPixelToModel(uint04 dim, uint04 pixel);
        uint04 convertModelToPixel(uint04 dim, fltp08 model);
 
        String getFormattedTickText(fltp08 value, fltp08 spacing, uint01 dim);
    protected:
        RulerOrientation  m_orientation;
        bool m_is_opaque;
        bool m_is_left_or_top;
        bool m_draw_minor;
        Vector<2, uint01> axis;
        Vector<2, fltp08> m_last_paint_scale;
        Vector<2, fltp08> m_last_world_spacing;
        Vector<2, fltp08> m_last_world_offset;
    };
}
#endif