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- Path: sparky!uunet!cis.ohio-state.edu!ucbvax!usl.com!lithgow
- From: lithgow@usl.com (Malcolm Lithgow)
- Newsgroups: comp.sys.acorn
- Subject: Re: RISCOS 3.1, the final conclusions..
- Message-ID: <9209140945.AA25890@ucbvax.Berkeley.EDU>
- Date: 14 Sep 92 09:44:11 GMT
- Sender: daemon@ucbvax.BERKELEY.EDU
- Lines: 47
-
- [In message "Re: RISCOS 3.1, the final conclusions..", Julian Wright writes:]
- >The difference between Oblique and Italics seems to be that the so-called
- >Oblique fonts use the same outlines as their non-oblique siblings (the
- >outlines file in the rom is a text file with the filename of the parent
- >outlines file and little else), whereas the Italics fonts have their own
- >outlines.
-
- This is one of the many areas where Acorn's font system shows some
- knowledge of typography, as opposed to Apple's laughable first (two)
- attempt(s) on the Mac (and Lisa -- in fact their first three -- Lisa,
- Mac, and Apple IIGS). Even Acorn's first system recognized that an
- 'Oblique' font is different from an 'Italic' font, whereas Apple
- treated Italic as if it were Oblique -- blech. Look at a Mac's font
- menu and you'll see that the 'Italic' entry is merely a skewed version
- of the 'Plain' entry. Icky-poo!
-
- For those who don't know the difference: an Oblique font is merely a
- geometrically manipulated version of a Roman font (an upright one),
- whereas an Italic font is a completely different font that bears a
- family resemblance to other members of the family (similar block size,
- x-height, verticals-to-horizontals-width ratio, etc.).
-
- Therefore, Oblique fonts can obviously be implemented by the simple
- expedient of transforming the Roman font. (Italics need their own
- definition.) Since RO 2.00 fonts couldn't be transformed by a 2D
- transformation matrix like RO 3.x0 fonts can be, the RO 2.00 Oblique
- fonts needed their own definition, whereas (using that word a bit much,
- aren't I?) RO 3.x0 Oblique fonts can simply refer to the Roman
- definition and include a transformation matrix to be applied to it.
-
- Pretty damn clever, I must admit. I presume this is what is happening
- (I haven't got RO 3.10 yet, and haven't heard about this before).
-
- Disclaimer: I am merely an enthusiastic amateur, so some of the above
- may be slightly misleading.
-
- As to the post about RO 3.10 being a smaller improvement over RO 2.00
- than RO 2.00 was over Arthur -- too right! If RO 3.10 were as great an
- improvement over RO 2.00 as RO 2.00 was over Arthur, Acorn would be
- selling an OS that was better in every way than all of the research
- OS's combined! I would say that the upgrade is more like Mac System 6.0
- to System 7.0 -- lots of changes, but no changes in the fundamental
- nature of the OS.
-
- Anyway, once again congrat's Acorn.
-
- -Malcolm. lithgow@usl.com These are merely my opinions.
-