Arno Trautmann <[email protected]> a écrit: > > Hi all, > > again a rather unusual question: I'd like to get the black area of a > glyph. Why? To estimate it's greyness: For a “–” e.g. I want to get > something like “5%” (of the whole box surface), while a “m” would give > some “30%”, and a black box of course would result in 100%. Of course I > would also be happy with any absolute value like “0.1 square inches” or > whatever. So: Is there any chance to read such a value from inside > LuaTex? Or is this information not available?
LuaTeX doesn't even read the curves used to draw a glyph, so no way you can get that information, as far as I can tell; you'll have to read directly from the font file (under the assumption that knowing the shape of the glyph gives you its area, which I don't know, not being a mathematician; perhaps by hit or miss?). Perhaps approximations exist, but I've never heard of them. Best, Paul
