3 Replies Latest reply on Feb 22, 2015 10:25 AM by CarlosCanto

    How does Illustrator calculate the Em Box Height?

    raoulduke007

      I'm trying to determine how Illustrator calculates the baseline position from the top of the bounding box for a Point Text object.  It appears to be the same distance as an Area Text object with the First Baseline setting set to Em Box Height.  I just can't figure out what property in a font's metrics this corresponds to.  Illustrator's help defines it as:

       

      "The top of the em box in Asian fonts touches the top of the type object. This option is available regardless of the Show Asian Options preference."

       

      For some fonts, this distance seems to be close the the font's ascender but this doesn't hold true for every font.  Any clues how Illustrator calculates this?

       

      metric-example.png