- ntg-context - Mailing Lists

Fwd: Fuzzy lines
by Jairo A. del Rio 13 May '21

13 May '21

---------- Forwarded message --------- De: Jairo A. del Rio <jairoadelrio6(a)gmail.com> Date: mié, 12 de may. de 2021 a la(s) 14:08 Subject: Re: [NTG-context] Fuzzy lines To: mailing list for ConTeXt users <ntg-context(a)ntg.nl> El mié, 12 de may. de 2021 a la(s) 13:03, Henning Hraban Ramm ( texml(a)fiee.net) escribió: > Hi Jairo, > > thank you for the suggestion. > > > Am 11.05.2021 um 14:56 schrieb Jairo A. del Rio <jairoadelrio6(a)gmail.com > >: > > > > For simple pens, you may define your own (section 9.7 of MetaPost > manual). > > Unfortunately, pens don’t work as patterns but only as outlines. > > > For complicated strokes, something along these lines could be useful as > a starting point (I'm not taking cyclic paths in consideration, btw). I did > something similar with duck footprints some weeks ago: > > > > %Sorry for the ugly code... > > \starttext > > \startMPpage > > %Unit size > > numeric u; u := 1mm; > > > > %In a picture you are able to include everything, kinda > > picture Pluma; > > Pluma := image( > > for i = 1 upto 5: > > for j = 1 upto 5: > > draw (i,j) randomized 1; > > endfor > > endfor > > ); > > Unfortunately, that’s the same pattern over and over. > The randomization is only applied once. > Good for footprints, bad for fuzzy patterns. > You only need to move "randomized" at the drawing stage: \starttext \startMPpage numeric u; u := 1mm; picture Pluma; Pluma := image( for i = 1 upto 5: for j = 1 upto 5: draw (i,j); endfor endfor ); path Camino; Camino := origin for i = 1 upto 30: .. (u*i, u*sind (12i mod 360)) endfor; for i = 0 step 1/2 until length Camino: draw Pluma randomized 1 rotated (90 + angle direction i of Camino) shifted point i of Camino; endfor \stopMPpage \stoptext But "randomized" will deform paths. Maybe you want something like this? \starttext \startMPpage[align=] begingroup; save Rnd; let Rnd = uniformdeviate; numeric u; u := 3mm; picture Pluma; Pluma := image( for i = 1 upto 5: for j = 1 upto 5: fill fullcircle shifted (i,j); %try fulltriangle or another shape endfor endfor ); path Camino; Camino := origin for i = 1 upto 30: .. u*i*left endfor; for i = 0 step 1/2 until length Camino: draw image( for x within Pluma: fill pathpart x %Assuming our image only contains cyclic paths scaled (1+Rnd 1) shifted (1/2dir Rnd 360) withcolor hsvtorgb(6round(Rnd 60),9/10,1); %Colors just because they look cute endfor ) rotated (90 + angle direction i of Camino) shifted point i of Camino; endfor endgroup; \stopMPpage \stoptext > %Simple curve > > path Camino; > > Camino := origin for i = 1 upto 30: .. (u*i, u*sind (12i mod 360)) > endfor; > > > > %Strokes > > for i = 0 step 1/2 until length Camino: > > draw Pluma rotated (90 + angle direction i of Camino) > > shifted point i of Camino; > > endfor > > Since I have more or less straight lines but of different length, the "one > pattern per 1/n path segment" doesn’t work for me. I could try to construct > my paths differently. > You only need to use fractions, i.e., "for 0 step 1/n until 1: ... endfor" if you work with straight lines defined using only two points. In the example above I made one from more than two points just for ease of manipulation. With examples and feedback from the mailing list, you might define your own function using the new Metafun interface for LMTX. > > Hraban > > > ___________________________________________________________________________________ > If your question is of interest to others as well, please add an entry to > the Wiki! > > maillist : ntg-context(a)ntg.nl / > http://www.ntg.nl/mailman/listinfo/ntg-context > webpage : http://www.pragma-ade.nl / http://context.aanhet.net > archive : https://bitbucket.org/phg/context-mirror/commits/ > wiki : http://contextgarden.net > ___________________________________________________________________________________ > > Jairo

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Language goodies -- hard line break the algorithm?
by denis.maier＠ub.unibe.ch 12 May '21

12 May '21

Hi, testing the new language goodies feature for ligature prevention, I found that hard line breaks seem to interfere somehow with the ligature prevention mechanism: ========================== \setuplanguage[de][ goodies={lang-de.llg}] \startlanguageoptions[de] auf|jubeln \stoplanguageoptions \mainlanguage[de] \definefontfeature[default][default][dlig=yes,liga=yes] \definefontfamily[times][rm][Times New Roman] \setupbodyfont[times] \starttext aufjubeln aufjubeln\\ auffliegen auffliegen\\ begrifflich begrifflich\\ \stoptext ====================== Best, Denis

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Ligatures blocking -- why block unspecified ligatures?
by denis.maier＠ub.unibe.ch 12 May '21

12 May '21

Hi, I just ran into an issue with the \blockligatures mechanism. For some reason, the following examples replaces ffi with f|fi and ffl with f|fl although I have not specified them in \blockligatures: ============================================== \definefontfeature[default][default][dlig=yes,liga=yes] \definefontfeature[default:block][default][blockligatures=yes] % block certain ligatures globally, but not f|fl, f|fi \blockligatures [ft,fft,fj,ffj,fk] \definefontfamily[times][rm][Times New Roman] \startbuffer[test] fj\\ ffi\\ ffl\\ ff\\ fi \stopbuffer \starttext \getbuffer[test] \definedfont[Serif*default:block] \getbuffer[test] \switchtobodyfont[times] \getbuffer[test] % With Times New Roman, we can even see the bars in the output \definedfont[Serif*default:block] \getbuffer[test] \stoptext ================================== What am I missing? (I am trying to block certain ligatures globally, ie. ft,fft,fj,ffj,fk, but fi, ffi, fl, fll are being dealt with in the language goodies file.) Thanks for your help, Denis

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Include PDF pages
by MANUEL GONZALEZ SUAREZ 12 May '21

12 May '21

Hello everybody: My query is as follows: in LaTeX there is the package "pdfpages" (https://www.ctan.org/pkg/pdfpages) that allows pages from a PDF file to be included in a TeX document. Is there a similar procedure that works in ConTeXt? Thanks. M. González.

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KeenWrite 2.0
by Thangalin 11 May '21

11 May '21

Happy to announce that invoking ConTeXt from KeenWrite is now possible. Here's a screenshot showing three different PDFs compiled from the same plain text document: https://github.com/DaveJarvis/keenwrite/blob/master/docs/screenshots.md#pdf… Here are the installation instructions for ConTeXt (basically, make sure that the "context" executable can be found in the system PATH): https://github.com/DaveJarvis/keenwrite/blob/master/docs/typesetting.md KeenWrite downloads: https://github.com/DaveJarvis/keenwrite#download Stay safe everyone!

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Adjusting parameters for a single page
by denis.maier＠ub.unibe.ch 11 May '21

11 May '21

Hi everyone, I know it is possible to make local changes by enclosing text in \start \stop pairs to make local changes. Then, there are also commands that only affect the next/current paragraph, such as \looseness. But is there a similar mechanism for page-layout changes? For example your penalty settings allow widows and orphans, but on one particular page you want to change the penalties. Or, you use \setupalign[height], but on one page you want to use \setupalign[bottom] instead. Is there a way to do this ? Best, Denis

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simpleslides gives 'input stack overflow'
by Adam Reviczky 11 May '21

11 May '21

Hi, With the latest luatex change from https://github.com/TeX-Live/luatex/commit/1566b63b338abbe38ed839fac9f2022eb… (and MKIV 2021-05-09 17:14:00) I get an input stack overflow: simpleslides > loading style Boxed system > command '\NormalHeight' is already defined system > command '\NormalWidth' is already defined system > command '\PictureFrameHeight' is already defined system > command '\PictureFrameWidth' is already defined close source > level 4, order 8, name '/usr/share/texmf/tex/context/third/simpleslides/s-simpleslides-Boxed.tex' close source > level 3, order 8, name '/usr/share/texmf/tex/context/third/simpleslides/t-simpleslides.mkiv' fonts > bodyfont '24.0414pt' is defined (can better be done global) metapost > initializing instance 'metafun:1' using format 'metafun' and method 'default' metapost > loading 'metafun' as '/usr/share/texmf/metapost/context/base/mpiv/metafun.mpiv' using method 'default' metapost > initializing number mode 'scaled' input stack overflow mtx-context | fatal error: return code: 256 MWE from the documentation: \usemodule[simpleslides][style=Boxed] \setupTitle[title={Title of the presentation},author={Name of authors},date={Date of presentation}] \starttext \placeTitle \SlideTitle{The first slide} Write whatever you want. \SlideTitle{The second slide} Continue writing. \stoptext Does that mean the simpleslides module has some recursion problems? I have tried a couple of themes but getting the same error. Adam

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Tracking overfull/underfull vboxes, widows/orphans
by denis.maier＠ub.unibe.ch 10 May '21

10 May '21

Hi, some time ago Hans has added these trackers for overfull/underfull hboxes: I'm wondering if there is something similar for vertical boxes? I've found these trackers: builders.vspacing builders.vpacking builders.page_vspacing builders.collect_vspacing But I don't really understand what they do. (Yes, I've tried them.) Maybe someone can shed some light on this ? (RTFM is a perfectly fine answer, just need to know which manual...) Then, would it be possible to add a tracker for widows/orphans? (Or even for prevented widows/orphans ?) Denis

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underscore hyphenation not working
by Pablo Rodriguez 10 May '21

10 May '21

Hans, some time ago, you provided me with the following code to hyphenate sha with underscore: \startluacode function document.addfunnyhyphen(tfmdata) local underscore = utf.byte("_") local char = tfmdata.characters[underscore] if not char then return end tfmdata.characters[0xFE000] = { width = 0, height = 0, depth = 0, commands = { { "right", -char.width }, { "down", char.depth }, { "slot", 1, underscore }, } } end utilities.sequencers.appendaction("aftercopyingcharacters", "after","document.addfunnyhyphen") local shared = { start = 1, length = 1, before = utf.char(0xFE000), after = nil, left = false, right = false, } local all = table.setmetatableindex({ }, function(t,k) return shared end) languages.hyphenators.traditional.installmethod("sha", function(dictionary,word,n) return all end) \stopluacode \definehyphenationfeatures [sha] [characters=all, alternative=sha, righthyphenchar="FE000] \sethyphenationfeatures[sha]% \setuphyphenation[method=traditional]% \starttext \hsize\zeropoint \tt abcde \stoptext I’m afraid that it isn’t working as expected with current latest from 2021.05.06 23:35. I wonder whether this might be caused by a bug or the code should be adapted to current latest. Many thanks for your help, Pablo -- http://www.ousia.tk

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\prime is too high
by Jairo A. del Rio 10 May '21

10 May '21

The following: \starttext $s''$ %or $s^{\prime}$ \stoptext gives a too high symbol in ConTeXt LMTX 2021.05.06 23:35. ConTeXt MkIV isn't affected for such an issue. Jairo

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