TextObject size


usually a font size is measured in point (0.3527mm) as far as I know.
When I create a text object in Rhino I can determine the size in model units.
Let’s say 10 units.

When I try to measure the created curves, I nowhere find the 10 units.

What is the logic behind that?
Nothing to complain, I just want to understand.


It’s sort of an average, I think. You have letters that are taller than the indicated size (C, G, J, etc. ) and those that are smaller ( A, B, D, E, etc…) This is the same whether the type size is measured in points, mm, inches or whatever - not all capital letters have the same height physically, they are sized slightly differently to look visually the same height.


Hi Mitch,

there are so many different sizes describing fonts… very confusing.

‘C’ or ‘O’ is higher than ‘N’, ‘X’ etc., clear so far.

It must be some averaging, but how exactly?
Seems it is not simple:

I just want to Rhino’s logic behind the calculation.
The goal is to have the results more predictable.
Nothing else.

The one who coded the TextObject will can say hopefully.