- ntg-context - NTG Mailing Lists

Including SVG manipulating color or rewrite in MP
by juh+ntg-context＠mailbox.org 14 Dec '24

14 Dec '24

Dear all, I have near to zero knowledge about MPgraphics, so I always use SVG files from various sources. I do something like this: \defineoverlay[pic][\externalfigure[form.svg][width=14em]] \defineframed [textcircledA] [ frame=off, strut=yes, rulethickness=0.0pt, background=pic, location=top,] \textcircledA{\externalfigure[icon.svg][width=280px]} The form.svg appears as background of icon.svg. Now I want to change the stroke color in the svg. It is very simple: <?xml version="1.0" encoding="UTF-8"?>  <svg width="20.887mm" height="17.613mm" version="1.1" viewBox="0 0 20.887 17.613" xmlns="http://www.w3.org/2000/svg"> <g transform="translate(152.66 -101.94)"> <path d="m-150.94 114.93c-0.5424-1.3121-0.58209-2.9382 0.18256-5.2163 2.3566-7.0175 11.139-8.7098 15.878-3.0594 7.6978 8.7032-11.506 16.052-16.06 8.2756" fill="none" stroke="#99bcdb" stroke-linecap="round" stroke-width="2"/> </g> </svg> I can simply open it in inkscape set the color an save it under a meaningful filename, but I would like to set the color in the context file. I tried to define the overlay pic with \includesvgbuffer but I can't get it to work. \startbuffer[svg] <svg width="20.887mm" height="17.613mm" version="1.1" viewBox="0 0 20.887 17.613" xmlns="http://www.w3.org/2000/svg"> <g transform="translate(152.66 -101.94)"> <path d="m-150.94 114.93c-0.5424-1.3121-0.58209-2.9382 0.18256-5.2163 2.3566-7.0175 11.139-8.7098 15.878-3.0594 7.6978 8.7032-11.506 16.052-16.06 8.2756" fill="none" stroke="MyColor" stroke-linecap="round" stroke-width="2"/> </g> </svg> \stopbuffer \defineoverlay[pic][\includesvgbuffer[svg][offset=1bp]] Nothing happens, no form appears in the overlay. I saw an example with \startstopuseMPgraphic in the Wiki. \startuseMPgraphic{MPtextcircle} path p; p := fullcircle xscaled OverlayWidth yscaled OverlayWidth; setbounds currentpicture to p ; % p:= p shifted (0,StrutDepth/2.7); draw p withpen pencircle scaled 25pt withcolor OverlayLineColor; \stopuseMPgraphic \defineoverlay[OLtextcircle][\useMPgraphic{MPtextcircle}] This works for me. Is it possible to use a svgbuffer in a overlay definition? Or do I have to convert the SVG code to MP? Is there a converter? TIA juh

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genealogy tree
by Thomas Meyer 11 Dec '24

11 Dec '24

Hi folks, is it possible to build a complex pedigree\genealogy tree with ConTeXt, like in LaTeX with genealogytree? Or what possibilities are there? Greetings Thomas

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\filename and \tex
by Henning Hraban Ramm 11 Dec '24

11 Dec '24

Hi, \filename tends to get too much letterspacing; can I change that? \tex has strange hyphenation, seems to break whereever; can I change that? Hraban

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regular online meet-up
by Henning Hraban Ramm 11 Dec '24

11 Dec '24

You’re invited to this year’s last regular online meet-up, this upcoming Wednesday, December 11, 19:00 CET (UTC+1) at https://lecture.senfcall.de/hen-rbr-rku-oke (same, but shorter: https://u.mtxrun.eu/ctxmtg) ConTeXt users of all levels are welcome! Looking forward to seeing you, Hraban (Same blurb as always:) [Howto] * No special software installation required; most modern browsers should work (WebRTC required). * Open the URL above, accept the privacy statement, * enter your name, * click "join" (or "start" if you’re the first), * click "with microphone", allow your browser to access it, check the audio. * Your microphone is muted if you join. Activate microphone and/or camera with the buttons at the bottom. * Minimize the default presentation with the "screen" button, bottom right. * If you’d like to share your screen or upload a file, you can make yourself the presenter: Click on your user name, change the setting, then you’ll see the "screen sharing" button beside the camera button; also there’s now "manage presentations" behind the "plus" button. Beware there is only one presenter at a time, so don’t kill someone else’s presentation. [Technical hints] * Sound is usually better if you use a headset (less noise for everyone). * Connection problems are mostly due to low bandwidth or high latency on your side, e.g. with mobile connections. * Sometimes leaving and re-entering helps. * If audio/video doesn’t work for you, you can still use the text chat. * Screen sharing needs a lot of bandwidth. * BigBlueButton documentation applies: https://bigbluebutton.org/teachers/tutorials/ [Netiquette] * Please use a name that we recognize from here. Some feel uncomfortable with anonymous lurkers. * Mute your microphone while you’re not talking. * It’s nice to show your face at least when you join. * If there are connection problems, stop camera sharing. * The room is set to “everyone’s a moderator“, I trust you...

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Re: Roman numerals typography
by damien＠thiriet.web4me.fr 11 Dec '24

11 Dec '24

Thanks Hraban, this is exactly what I need! Once more, the stuff I was looking for was already implemented in ConTeXt… > > Am 07.12.24 um 13:57 schrieb Damien Thiriet via ntg-context: >> In French typography, roman numerals are usually typeset being >> connected >> with a top bar and a lower bar > > Did you try the numbering option "or"? > > \convertnumber{or}{12} > > Hraban > Damien

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Donald E. Knuth. — The Grapholinguistic Model of TeX (interview) — “All Questions Answered”
by luigi scarso 10 Dec '24

10 Dec '24

https://www.youtube.com/watch?v=TVSuM84SS3M Talk given at the Grapholinguistics in the 21st Century Conference, on October 24th, 2024. https://grafematik2024.sciencesconf.org/ <https://www.youtube.com/redirect?event=video_description&redir_token=QUFFLU…> -- luigi

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How to make this Metapost diagram adjust to the width of text?
by Joel 09 Dec '24

09 Dec '24

I am using this to create a simple branched diagram, with one item, branches into two, and each of those two further branch into two. I'm running into two problems: (1) The lines cut right through the word "apple" and "banana", I need to place a node at the right of apple and banana that connects to sub-branches. In other words, I'd rather it have a broken line, ending at left of apple and then continuing at right of apple. (2) If you put longer text in the top category, it adjusts. And if you put longer text in the lowest branches, it adjusts, but I can't find a way to get the branches to adjust length to accommodate longer text in the middle, where apple and banana are. I tried using different code to find textwidth, but it isn't working: numeric text_width; text_width = width(textext("#2")); How can I make the diagram adjust if the words in the middle branches are longer? --Joel \starttext % Define the macro outside the Metapost code block \def\macroXa#1#2#3#4#5#6#7 { \startMPcode u := 1.5cm; % Reduced unit size for compact spacing % Main node positions z0 = (0, 0); % Fruit position z1 = (1u, 0); % Horizontal segment from Fruit z2 = (1u, 0.6u); % Apple position z3 = (1u, -0.6u); % Banana position z4 = (3u, 0.9u); % Fuji branch z5 = (3u, 0.3u); % Gala branch z6 = (3u, -0.3u);% Cavendish branch z7 = (3u, -0.9u);% Plantain branch z8 = (4u, 0.9u); % Fuji z9 = (4u, 0.3u); % Gala z10 = (4u, -0.3u); % Cavendish z11 = (4u, -0.9u); % Plantain % Main paths draw z0 -- z1; % Horizontal from Fruit draw z1 -- z2; % Line to Apple (90-degree angle) draw z1 -- z3; % Line to Banana (90-degree angle) % Apple sub-branches draw z2 -- (3u, 0.6u) -- z4; % Right angle to Fuji draw z2 -- (3u, 0.6u) -- z5; % Right angle to Gala % Banana sub-branches draw z3 -- (3u, -0.6u) -- z6; % Right angle to Cavendish draw z3 -- (3u, -0.6u) -- z7; % Right angle to Plantain % Final horizontal branches draw z4 -- z8; % Fuji draw z5 -- z9; % Gala draw z6 -- z10; % Cavendish draw z7 -- z11; % Plantain % Add labels using macro arguments label.lft(btex #1 etex, z0); % Fruit label.rt(btex #2 etex, z2); % Apple label.rt(btex #3 etex, z3); % Banana label.rt(btex #4 etex, z8); % Fuji label.rt(btex #5 etex, z9); % Gala label.rt(btex #6 etex, z10); % Cavendish label.rt(btex #7 etex, z11); % Plantain \stopMPcode } % Call the macro with labels \macroXa{Fruit}{Apple}{Banana}{Fuji}{Gala}{Cavendish}{Plantain} \macroXa{This text is longer}{Apple}{Banana}{Fuji}{Gala}{Cavendish}{Plantain} \macroXa{This text is longer}{Apple}{it needs to accomodate longer text here}{Fuji}{Gala}{Cavendish}{Plantain} \stoptext

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[ \startTEXpage with \strut ]
by vm 08 Dec '24

08 Dec '24

Trying to get a single page of a specific size, I set the width and height of \startTEXpage only to find out that a \strut as a last command before the \stopTEXpage, will expand the height. 8<---- \setuppapersize [A2] \starttext \startTEXpage[offset=0mm, width=220mm, height=110mm] MWE without \type{\strut} -> Landscape (220 × 110 mm) %MWE with \type{\strut} -> Landscape (220 × 111 mm) %\strut \stopTEXpage \stoptext --->8 There if probably a reason to it, so I'd like to know why it works as it does. .F

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Roman numerals typography
by damien＠thiriet.web4me.fr 07 Dec '24

07 Dec '24

Hello, In French typography, roman numerals are usually typeset being connected with a top bar and a lower bar, at least when it comes to century numbers (should be also small caps, something I discovered today). Since I am not sure my vocabulary suits to this reality, you can see a sample looking at photos displayed in this online article https://fr.cultura10.com/r%C3%A8gles-d%27%C3%A9criture-des-nombres-romains/ I have been simulating this with kerning for several years, but I recently switched from Latin Modern Sans to Luciole (both 24pt) for my presentations and I have to redesign this issue. So it is a good opportunity to find some a better alternative than stuff like \def\III{{\rm I\kern -1.3pt I\kern -1.3pt I}}, working at the font level or with a ConTeXt built-in macro. Several questions: 1) Is this already implemented in ConTeXt (I don't have time to reinvent the wheel once more)? The sample I looked at in the \Romannumeral wiki page doesn't implement this, but they may be alternative I am not aware of. 2) If it isn't, I think the best way would be to add a font extension, using hits given by Hans in the 11th meeting proceedings. However, what would be the best idea: playing with kerning, or with ligatures? Thanks for your advices, Damien Thiriet

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Rounded pens with Metapost
by Wolfgang Schuster 07 Dec '24

07 Dec '24

Hi, are there now better ways to create rounded pens without adding many support points? \starttext \startMPpage[offset=1dk] path Halfcircle ; Halfcircle = (1,0){up} for i = 1 upto 180 : .. ((1,0) rotated i) endfor -- cycle ; draw Halfcircle scaled 10 shifted (0,12) ; pen HalfcirclePen ; HalfcirclePen := makepen Halfcircle ; draw ((0,1) -- (1,1)) scaled 10 withpen HalfcirclePen ; draw ((0,0) -- (0,1)) scaled 10 withpen HalfcirclePen rotated 90 ; draw ((1,0) -- (1,1)) scaled 10 withpen HalfcirclePen rotated 270 ; draw ((0,0) -- (1,0)) scaled 10 withpen HalfcirclePen rotated 180 ; \stopMPpage \startMPpage[offset=1dk] path RoundedRectangle ; RoundedRectangle = (-1,0){up} for i = 180 step -1 until 89 : .. ((1,0) rotated i) endfor -- (1,1){down} for i = 360 step -1 until 269 : .. ((1,0) rotated i shifted (0,1)) endfor -- cycle ; draw RoundedRectangle scaled 10 shifted (0,12) ; pen RoundedRectanglePen ; RoundedRectanglePen := makepen RoundedRectangle ; draw ((1,0) -- (1,1)) scaled 10 withpen RoundedRectanglePen reflectedabout (up,down) rotated 270 ; draw ((0,0) -- (1,0)) scaled 10 withpen RoundedRectanglePen rotated 180 ; \stopMPpage \stoptext Wolfgang

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