Re: [NTG-context] Dotted characters

2016-08-20 Thread Wolfgang Schuster 

Lukáš Procházka 
20. August 2016 um 14:03
Hello again,

the dotted font works perfectly.

I'm using Lua to generate sheets from a database which contains 
word-picture-picture2 records (see attached single page sample; I had 
to convert the image to .jpg to reduce file size).


One more question - is there a ConTeXt/Lua function which would assign 
a non-diacritical-character to that with diacritics, like:


Á => A
Š => S
Ý => Y etc.?

I'm asking as the "Trace Font for Kids" doesn't contain characters 
with diacritics...


Simple Lua table would do the job, like


remove_dia_czech =
{ ["é"] = "e",
  ["š"] = "s",
  ...
}


But string pattern in Lua with cp1250/UTF-8 might not be so easy as 
Lua pattern "." matches single char (or - better - one byte - I 
guess), so with UTF-8, chars with diacritics need more bytes; so the code



str = ("Řetězec with diacritics"):gsub(".", remove_dia_czech)


probably won't work.

And Ctx Lua could have a mechanism already...
You can use the “characters.shaped” function which is described in 
cld-mkiv.pdf at page 87 and 119.


\starttext
Řetězec = \cldcontext{characters.shaped("Řetězec")}
\stoptext

Wolfgang
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Re: [NTG-context] Dotted characters

2016-08-20 Thread Lukáš Procházka 

Hello again,

the dotted font works perfectly.

I'm using Lua to generate sheets from a database which contains 
word-picture-picture2 records (see attached single page sample; I had to 
convert the image to .jpg to reduce file size).

One more question - is there a ConTeXt/Lua function which would assign a 
non-diacritical-character to that with diacritics, like:

Á => A
Š => S
Ý => Y etc.?

I'm asking as the "Trace Font for Kids" doesn't contain characters with 
diacritics...

Simple Lua table would do the job, like


remove_dia_czech =
{ ["é"] = "e",
  ["š"] = "s",
  ...
}


But string pattern in Lua with cp1250/UTF-8 might not be so easy as Lua pattern 
"." matches single char (or - better - one byte - I guess), so with UTF-8, 
chars with diacritics need more bytes; so the code


str = ("Řetězec with diacritics"):gsub(".", remove_dia_czech)


probably won't work.

And Ctx Lua could have a mechanism already...

Best regards,

Lukas

On Tue, 16 Aug 2016 09:43:12 +0200, Taco Hoekwater  wrote:


there is no easy way to convert that into a dotted line that matches the ‘black 
parts’ of the glyph shape. Perhaps you could use two regular fonts: one 
sans-serif and one with dotted lines? There are some free fonts with dotted 
lines that can be found on the web, e.g. here: 
http://www.fontspace.com/category/dotted-line

Best wishes,
Taco



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Re: [NTG-context] Dotted characters

2016-08-16 Thread Procházka Lukáš Ing . 

Hello Hans,

On Tue, 16 Aug 2016 09:54:26 +0200, Hans Hagen  wrote:



the best one can expect without too much work is

\startMPpage
 draw outlinetext.f
 ("A")
 () ;
 currentpicture := currentpicture shifted (-bbwidth currentpicture,0) ;
 draw outlinetext.d
 ("A")
 (withpen pencircle scaled 1/10
  dashed withdots scaled 1/20) ;
\stopMPpage

see attached


thanks for the code; I'll try Taco's way first, maybe later the MP code.

Best regards,

Lukas


--
Ing. Lukáš Procházka | mailto:l...@pontex.cz
Pontex s. r. o.  | mailto:pon...@pontex.cz | http://www.pontex.cz | 
IDDS:nrpt3sn
Bezová 1658
147 14 Praha 4

Tel: +420 241 096 751 (+420 720 951 172)
Fax: +420 244 461 038

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Re: [NTG-context] Dotted characters

2016-08-16 Thread Procházka Lukáš Ing . 

Hello Taco,

On Tue, 16 Aug 2016 09:43:12 +0200, Taco Hoekwater  wrote:


Hi Lukáš,


Most anything can be programmed, but in this case the task is very difficult.

Modern fonts always use filled paths instead of stroke lines, so an “A” 
consists of two paths: the outer shape and the middle triange are separate:
_
   / \
  /   \  /\
 /  _  \/__\
/_/   \_\



yes, I was aware of that, that's why I mentioned a "single-drawings-character".


there is no easy way to convert that into a dotted line that matches the ‘black 
parts’ of the glyph shape. Perhaps you could use two regular fonts: one 
sans-serif and one with dotted lines? There are some free fonts with dotted 
lines that can be found on the web, e.g. here: 
http://www.fontspace.com/category/dotted-line


Great, it seems that "Trace Font for Kids"
http://www.fontspace.com/p-j-cassel/trace-font-for-kids
would be exactly what I need.



Another option would be draw the ‘normal’ uppercase letter directly as a 
metapost path.


Yes, I thought so.


In that case it would be rather simple to create a generic dotted path from 
that using ‘setdash’. However, without manual work, it will not look as good as 
pre-drawn font, because for a ‘nice’ dotted path you need to make sure that the 
dots in the crossbar of an ‘A’ line up nicely with the dots in the diagonal 
outer strokes, which is quite hard to do.


OK, thanks for you response - I'll try Trace Font for Kids first.

Best regards,

Lukas



Best wishes,
Taco





Taco Hoekwater
Elvenkind BV








--
Ing. Lukáš Procházka | mailto:l...@pontex.cz
Pontex s. r. o.  | mailto:pon...@pontex.cz | http://www.pontex.cz | 
IDDS:nrpt3sn
Bezová 1658
147 14 Praha 4

Tel: +420 241 096 751 (+420 720 951 172)
Fax: +420 244 461 038

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Re: [NTG-context] Dotted characters

2016-08-16 Thread Hans Hagen 

On 8/16/2016 9:43 AM, Taco Hoekwater wrote:

Hi Lukáš,


On 16 Aug 2016, at 09:17, Procházka Lukáš Ing. mailto:l...@pontex.cz>> wrote:

Hello,

I'm preparing a child copybook.
I'd like to write a uppercased letter "as is" followed by its shape
drawn with dots - something like

  /\   .
 /  \ . .
/\   .
/  \ . .

I guess that some MP "trick(s)" might be used;
also, a "simple" font should be used to be drawn dotted, which uses
"single drawings" to draw each line of the character.


Most anything can be programmed, but in this case the task is very
difficult.

Modern fonts always use filled paths instead of stroke lines, so an “A”
consists of two paths: the outer shape and the middle triange are separate:
_
   / \
  /   \  /\
 /  _  \/__\
/_/   \_\

there is no easy way to convert that into a dotted line that matches the
‘black parts’ of the glyph shape. Perhaps you could use two regular
fonts: one sans-serif and one with dotted lines? There are some free
fonts with dotted lines that can be found on the web, e.g.
here: http://www.fontspace.com/category/dotted-line

Another option would be draw the ‘normal’ uppercase letter directly as a
metapost path. In that case it would be rather simple to create a
generic dotted path from that using ‘setdash’. However, without manual
work, it will not look as good as pre-drawn font, because for a ‘nice’
dotted path you need to make sure that the dots in the crossbar of an
‘A’ line up nicely with the dots in the diagonal outer strokes, which is
quite hard to do.


the best one can expect without too much work is

\startMPpage
draw outlinetext.f
("A")
() ;
currentpicture := currentpicture shifted (-bbwidth currentpicture,0) ;
draw outlinetext.d
("A")
(withpen pencircle scaled 1/10
 dashed withdots scaled 1/20) ;
\stopMPpage

see attached

-
  Hans Hagen | PRAGMA ADE
  Ridderstraat 27 | 8061 GH Hasselt | The Netherlands
   tel: 038 477 53 69 | www.pragma-ade.nl | www.pragma-pod.nl
-


temp.pdf
Description: application/applefile


temp.tex
Description: TeX document
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Re: [NTG-context] Dotted characters

2016-08-16 Thread Taco Hoekwater 
Hi Lukáš,

> On 16 Aug 2016, at 09:17, Procházka Lukáš Ing.  wrote:
> 
> Hello,
> 
> I'm preparing a child copybook.
> I'd like to write a uppercased letter "as is" followed by its shape drawn 
> with dots - something like
> 
>   /\   .
>  /  \ . .
> /\   .
> /  \ . .
> 
> I guess that some MP "trick(s)" might be used;
> also, a "simple" font should be used to be drawn dotted, which uses "single 
> drawings" to draw each line of the character.

Most anything can be programmed, but in this case the task is very difficult. 

Modern fonts always use filled paths instead of stroke lines, so an “A” 
consists of two paths: the outer shape and the middle triange are separate:
_
   / \
  /   \  /\
 /  _  \/__\
/_/   \_\

there is no easy way to convert that into a dotted line that matches the ‘black 
parts’ of the glyph shape. Perhaps you could use two regular fonts: one 
sans-serif and one with dotted lines? There are some free fonts with dotted 
lines that can be found on the web, e.g. here: 
http://www.fontspace.com/category/dotted-line

Another option would be draw the ‘normal’ uppercase letter directly as a 
metapost path. In that case it would be rather simple to create a generic 
dotted path from that using ‘setdash’. However, without manual work, it will 
not look as good as pre-drawn font, because for a ‘nice’ dotted path you need 
to make sure that the dots in the crossbar of an ‘A’ line up nicely with the 
dots in the diagonal outer strokes, which is quite hard to do.

Best wishes,
Taco





Taco Hoekwater
Elvenkind BV




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[NTG-context] Dotted characters

2016-08-16 Thread Procházka Lukáš Ing . 

Hello,

I'm preparing a child copybook.
I'd like to write a uppercased letter "as is" followed by its shape drawn with 
dots - something like

   /\   .
  /  \ . .
 /\   .
/  \ . .

I guess that some MP "trick(s)" might be used;
also, a "simple" font should be used to be drawn dotted, which uses "single 
drawings" to draw each line of the character.

Could anybody help with such (MP) code?

Best regards,

Lukas


--
Ing. Lukáš Procházka | mailto:l...@pontex.cz
Pontex s. r. o.  | mailto:pon...@pontex.cz | http://www.pontex.cz | 
IDDS:nrpt3sn
Bezová 1658
147 14 Praha 4

Tel: +420 241 096 751 (+420 720 951 172)
Fax: +420 244 461 038

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