This page provides in-depth information, how TrueType fonts will be converted to Unigraphics fonts. For your reference, download arial.zip (102 KB) - containing a subset from a conversion of Arial.ttf:
Font header information is directly derived from TrueType header information. Contrary to common UG practice, the box-height is not 127 (pre V14) or 16383 (V14 and above). We use the native TrueType value instead, avoiding a lot of scaling work. This works nicely in UG, but some ill conditioned user-apps, directly reading font source files might fail.
Variable character spacing is used, thus translating TrueType character
advance widths to UG character widths. For best matching of character spacing
between TT and UG fonts, you should set Preferences - Lettering - Character
Space = 0.
Overlap shifting/Kerning cannot be applied because of fundamental differences between both font formats.
Two types of files are provided: ISO and Unicode.
For additional information on character codes and fonts in UG, please take a look at Steven Vickers very comprehensive page International Fonts for Unigraphics.
Lines are converted as such, bezier curves are split into atomic bezier
arcs and approximated by line segments (coarse, medium, fine).
Contrary to TT fonts, UG fonts do not allow negative point coordinates. A transformation is performed, ensuring all x and y values are positive at least for ISO characters.
Filling of outlines is done by straight horizontal lines. In your order you have to specify the number of lines per character height, if filling is desired. The number of lines depends mainly on your requirements: A low number will result in a fast font as UG has to draw only a small number of strokes - a large number will provide nicely filled shapes of the characters.
Before you can use the new font in UG, the '.fnt'-files have to be translated
with the 'ugfontc' utility into '.fnx'-files and moved to your UGII_CHARACTER_FONT_DIR.
For detailed information on ugfontc please see the UG documentation.
Note: Maximum filename-length for ugfontc is 30 characters, so you may have to shorten the filename of the shipped '.fnt'-files before.
Last updated: 01-Dec-2000