This class describes the proportional characteristics of the font  in terms of the dimensions of the glyph within the cell. These characteristics define the font design unit.

For more information, see class HT_Font_Engine and HT_Font.

class HT_Glyph_Metrics {
    public:
        float           m_width;       Width of the glyph.
        float           m_height;      Height of the glyph.
        HT_Point        m_origin;      Glyph Origin - Upper left corner of the cell.
        float           m_inc_x;       Distance between origin of current to next character origin.
        float           m_inc_y;
};