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Re: wanted: kcharpath ...

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Sorry for the delay, I've been creating my first ever Type 3 font.
When I look through The Art Deco Poster (Crouse) I notice that every
single poster has its own individual font ! (and they're almost all
all-uppercase, too.)  I going to miss charpath and clip, though ...

On 2016-05-22, Carlos <angus@quovadis.com.ar> wrote:
> [Peter Billam <peter@www.pjb.com.au>, 2016-05-21 02:09]
>> ...
>> I'm still not sure how that works.  How does it turn lower-case
>> into small uppercase?  It must be in the SubsVector, since 61 hex
>> is "A" ascii, and 1a is 26, the length of the alphabet;
>> but I don't see a `32 sub` or `32 add` anywhere.
>> And how does `0.8 scalefont` only get applied to former a-z chars ?
>> And the `/Encoding [ 65 1 90`  (PLRM: "an array of integers, each
>> used as an index to extract a font dictionary from the FDepVector")
>> I think it was at that point that I got brain-overload :-( ...
>
> SubsVector defines character code ranges by their size, the last being
> implicit. The ranges are:
>         size      range
>   16#61 = 97        0 -  96;  \000 - `
>   16#1A = 26       97 - 122;  a    - z
>   implicit        123 - 256;  {    - \377
>
> When show (or cshow) meets an 'a' in a string (code 97), it finds it
> belongs to the second range (index 1). It looks up the number at index
> 1 in the Encoding vector (it's 1 again). Then uses that number to find
> which subfont to use from FDepVector (it's the font at index 1). Then
> it subtracts the start of the range from the char code (97-97=0) and
> uses the glyph at that index in the subfont's Encoding vector.
>
> The font at index 1 in FDepVector is reencoded, it's Encoding vector
> is simply [ /A /B /C /D /E ... /Z ]. I made it looping from 'A' (65)
> to 'Z' (90), creating a string with that letter and then converting it
> to a name... it was a silly thing to do, using getinterval/putinterval
> to copy the range from Times-Roman's encoding, or even writing /A /B
> ... /Z would have been faster and more readable.

That's the:
  dup /Encoding [65 1 90 {1 string dup 0 4 -1 roll put cvn} for] put

So how would you rewrite that, in an ideal world ?
(I'll roll it into my SmallCaps collection.)

> Anyway, to get back... the subtraction you were missing is done
> automatically by the composite font system. And scalefont is only
> applied to the font on top of the stack, which is the font we just
> created by copying Times-Roman, and changing its Encoding vector.

OK, I think I get that :-)
Could still be a while before I'm fluent in this area, though...

Is there a website somewhere with a collection of Type 3 fonts ?
Should be on github, really, if github can realise .ps is text...

Many thanks,
Peter

-- 

Peter Billam    www.pjb.com.au    www.pjb.com.au/comp/contact.html

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Thread

wanted: kcharpath ... Peter Billam <peter@www.pjb.com.au> - 2016-05-15 03:33 +0000
  Re: wanted: kcharpath ... luser- -droog <mijoryx@yahoo.com> - 2016-05-15 14:16 -0700
    Re: wanted: kcharpath ... Peter Billam <peter@www.pjb.com.au> - 2016-05-16 06:51 +0000
      Re: wanted: kcharpath ... Peter Billam <peter@www.pjb.com.au> - 2016-05-18 02:01 +0000
        Re: wanted: kcharpath ... luser- -droog <mijoryx@yahoo.com> - 2016-05-17 20:41 -0700
          Re: wanted: kcharpath ... luser- -droog <mijoryx@yahoo.com> - 2016-05-17 20:44 -0700
            Re: wanted: kcharpath ... Peter Billam <peter@www.pjb.com.au> - 2016-05-18 06:59 +0000
      Re: wanted: kcharpath ... luser- -droog <mijoryx@yahoo.com> - 2016-05-18 22:29 -0700
  Re: wanted: kcharpath ... Carlos <angus@quovadis.com.ar> - 2016-05-18 23:00 +0200
    Re: wanted: kcharpath ... Peter Billam <peter@www.pjb.com.au> - 2016-05-21 02:09 +0000
      Re: wanted: kcharpath ... Peter Billam <peter@www.pjb.com.au> - 2016-05-21 03:13 +0000
      Re: wanted: kcharpath ... Carlos <angus@quovadis.com.ar> - 2016-05-22 14:20 +0200
        Re: wanted: kcharpath ... Peter Billam <peter@www.pjb.com.au> - 2016-05-29 06:24 +0000
          Re: wanted: kcharpath ... luser- -droog <mijoryx@yahoo.com> - 2016-05-28 23:43 -0700
          Re: wanted: kcharpath ... luser- -droog <mijoryx@yahoo.com> - 2016-05-29 01:10 -0700
            from image to imagemask Peter Billam <peter@www.pjb.com.au> - 2016-05-31 08:51 +0000
              Re: from image to imagemask luser- -droog <mijoryx@yahoo.com> - 2016-06-01 00:53 -0700
                Re: from image to imagemask luser- -droog <mijoryx@yahoo.com> - 2016-06-01 01:10 -0700
                Re: from image to imagemask Peter Billam <peter@www.pjb.com.au> - 2016-06-02 01:26 +0000
                Re: from image to imagemask Peter Billam <peter@www.pjb.com.au> - 2016-06-03 07:53 +0000
          Re: wanted: kcharpath ... Carlos <angus@quovadis.com.ar> - 2016-06-03 14:38 +0200
            Re: wanted: kcharpath ... Peter Billam <peter@www.pjb.com.au> - 2016-06-06 02:43 +0000
              Re: wanted: kcharpath ... Carlos <angus@quovadis.com.ar> - 2016-06-06 07:53 +0200

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