[NTG-context] Re: MetaFun path joiners && and &&&& do not like single point paths
Hi On Sun, Dec 31, 2023 at 3:33 AM Gavin via ntg-context wrote: > > Hi MetaFun fans, > > Following a suggestion of Hans, I experimented with && and &&& and for > joining paths in MetaFun. The joiner &&& produces one long path, but && and > seem to produce a disconnected path which includes all the original > paths. However, if one of the paths is a single point, then it connects it. > MWE below. > > I spotted this on my globes module, where we saw an extra line appear for a > very specific orientation of the globe. I guessed that this orientation had > an island right on the horizon, so that only one boundary point was visible, > creating a singe point path for that island. I should probably fix my module > so it doesn’t do that. However, it might be nice to have && and deal > with this situation gracefully. > > Gavin > > > \startMPpage > path p[], q ; > p1 = fullcircle scaled 3cm ; > p2 = fullcircle scaled 2cm shifted (3cm,0) ; > p3 = (3cm,2cm) ; > q = for i = 1 upto 3 : > p[i] && > endfor > cycle ; > draw p1 withpen pencircle scaled 2pt withcolor .7 ; > draw p2 withpen pencircle scaled 2pt withcolor .7 ; > draw p3 withpen pencircle scaled 2pt withcolor .7 ; > draw q withcolor red ; > eofill q withcolor 0.9 ; > draw fullcircle scaled 6cm shifted (1.25cm,0) ; > \stopMPpage Not beautiful, but this seems to do what you want in this particular case: \startMPpage path p[], q ; p1 = fullcircle scaled 3cm ; p2 = fullcircle scaled 2cm shifted (3cm,0) ; p3 = (3cm,2cm) ; p4 = fullcircle ; q = p[1] for i = 2 upto 3: if (length(p[i]) == 0): &&& else: && fi p[i] endfor && cycle ; eofill q withcolor 0.9 ; draw p1 withpen pencircle scaled 2pt withcolor .7 ; draw p2 withpen pencircle scaled 2pt withcolor .7 ; draw p3 withpen pencircle scaled 2pt withcolor .7 ; draw q withcolor red ; draw fullcircle scaled 6cm shifted (1.25cm,0) ; \stopMPpage This gives q = p1 && p2 &&& p3 && cycle ; /Mikael ___ If your question is of interest to others as well, please add an entry to the Wiki! maillist : ntg-context@ntg.nl / https://mailman.ntg.nl/mailman3/lists/ntg-context.ntg.nl webpage : https://www.pragma-ade.nl / https://context.aanhet.net (mirror) archive : https://github.com/contextgarden/context wiki : https://wiki.contextgarden.net ___
[NTG-context] MetaFun path joiners && and &&&& do not like single point paths
Hi MetaFun fans, Following a suggestion of Hans, I experimented with && and &&& and for joining paths in MetaFun. The joiner &&& produces one long path, but && and seem to produce a disconnected path which includes all the original paths. However, if one of the paths is a single point, then it connects it. MWE below. I spotted this on my globes module, where we saw an extra line appear for a very specific orientation of the globe. I guessed that this orientation had an island right on the horizon, so that only one boundary point was visible, creating a singe point path for that island. I should probably fix my module so it doesn’t do that. However, it might be nice to have && and deal with this situation gracefully. Gavin \startMPpage path p[], q ; p1 = fullcircle scaled 3cm ; p2 = fullcircle scaled 2cm shifted (3cm,0) ; p3 = (3cm,2cm) ; q = for i = 1 upto 3 : p[i] && endfor cycle ; draw p1 withpen pencircle scaled 2pt withcolor .7 ; draw p2 withpen pencircle scaled 2pt withcolor .7 ; draw p3 withpen pencircle scaled 2pt withcolor .7 ; draw q withcolor red ; eofill q withcolor 0.9 ; draw fullcircle scaled 6cm shifted (1.25cm,0) ; \stopMPpage ___ If your question is of interest to others as well, please add an entry to the Wiki! maillist : ntg-context@ntg.nl / https://mailman.ntg.nl/mailman3/lists/ntg-context.ntg.nl webpage : https://www.pragma-ade.nl / https://context.aanhet.net (mirror) archive : https://github.com/contextgarden/context wiki : https://wiki.contextgarden.net ___
[NTG-context] Re: Status of Asymptote
On Sun, 31 Dec 2023, Shiv Shankar Dayal wrote: > It would be nice to either support Metapost 3D or Asymptote. Right now I > generate images separately and embed them in PDF using externalfigure command > which works but I have to maintain all the graphics separately. It is possible to obtain simple integration for asymptote using the filter module: https://github.com/adityam/filter Using that you could define an asymptote environment so that: \startbuffer[asymptote-preamble] \stopbuffer \starttext \startasymptote % Asymptote figure \stopasymptote \stoptext saves the content of the asymptote-preamble and the figure in a separate file, runs asymptote to generate a PDF figure and includes the figure. The results are cached so the asymptote is re-run only if the content of the figure environment changes. A drawback of this approach is that the labels are generated by asymptote. That means that the font, colors, and any macros needed for the figures need to be redefined at both context and asymptote end. Aditya ___ If your question is of interest to others as well, please add an entry to the Wiki! maillist : ntg-context@ntg.nl / https://mailman.ntg.nl/mailman3/lists/ntg-context.ntg.nl webpage : https://www.pragma-ade.nl / https://context.aanhet.net (mirror) archive : https://github.com/contextgarden/context wiki : https://wiki.contextgarden.net ___
[NTG-context] Re: Status of Asymptote
On 12/30/2023 8:04 PM, Shiv Shankar Dayal wrote: Hi all, It would be nice to either support Metapost 3D or Asymptote. Right now I generate images separately and embed them in PDF using externalfigure command which works but I have to maintain all the graphics separately. next year we will pick up 3 (2.5, projections) in mp (either native or in macros) ... there will be no support for asymptote beyond what we have now Hans - Hans Hagen | PRAGMA ADE Ridderstraat 27 | 8061 GH Hasselt | The Netherlands tel: 038 477 53 69 | www.pragma-ade.nl | www.pragma-pod.nl - ___ If your question is of interest to others as well, please add an entry to the Wiki! maillist : ntg-context@ntg.nl / https://mailman.ntg.nl/mailman3/lists/ntg-context.ntg.nl webpage : https://www.pragma-ade.nl / https://context.aanhet.net (mirror) archive : https://github.com/contextgarden/context wiki : https://wiki.contextgarden.net ___
[NTG-context] Re: Status of Asymptote
On 30/12/23 30/12/23, 12:04, Shiv Shankar Dayal wrote: It would be nice to either support Metapost 3D Very simple MP pseudo 3D is included in tex/texmf-context/metapost/context/base/mpiv/mp-tres.mpiv Alan ___ If your question is of interest to others as well, please add an entry to the Wiki! maillist : ntg-context@ntg.nl / https://mailman.ntg.nl/mailman3/lists/ntg-context.ntg.nl webpage : https://www.pragma-ade.nl / https://context.aanhet.net (mirror) archive : https://github.com/contextgarden/context wiki : https://wiki.contextgarden.net ___
[NTG-context] Re: Status of Asymptote
Hi Shiv and Fabrice, > On Dec 30, 2023, Shiv Shankar Dayal wrote: > It would be nice to either support Metapost 3D or Asymptote. > On Dec 6, 2021, Fabrice L wrote: > I would be very interested to see an example of a Metafun drawing made with > the help of LuaTeX to speed up some calculations. I made a module that draws 3D globes with MetaPost and Lua. This was my first step toward drawing general projections. If anyone would like to join this project, I’d love some help. The globes module is only about 300 lines of code, and most of the challenge was hiding paths and parts of paths that are on the back side of the globe. Anybody could get up to speed pretty quickly. (I am completely new to both MetaPost and Lua, so I tried to be very clear in my coding.) My goal is a drawing process which starts with Lua tables containing data in arbitrary coordinates. The data could be any number of dimensions, and need not be rectangular. (For the globes the data is latitude and longitude points on the countries' boundaries.) The tables could be from an outside source (like the geographic data) or it could be calculated in Lua (for graphing functions or doing simulations). Lua does all of the calculations to project this data down to two dimensional, rectangular coordinates. Lua then passes these two dimensional points, or paths made from them, to MetaPost. MetaPost uses the points and paths to draw dots, curves and areas, to place labels, etc. The only transformation performed by MetaPost is the final scaling for drawing everything on the page. You can find the globe module on GitHub: https://github.com/GavinPolhemus/luageo I am relatively new to Git as well, so have patience if you start commenting or contributing there. I’ll learn fastest if there are collaborators! Gavin ___ If your question is of interest to others as well, please add an entry to the Wiki! maillist : ntg-context@ntg.nl / https://mailman.ntg.nl/mailman3/lists/ntg-context.ntg.nl webpage : https://www.pragma-ade.nl / https://context.aanhet.net (mirror) archive : https://github.com/contextgarden/context wiki : https://wiki.contextgarden.net ___
[NTG-context] Re: Status of Asymptote
Hi all, It would be nice to either support Metapost 3D or Asymptote. Right now I generate images separately and embed them in PDF using externalfigure command which works but I have to maintain all the graphics separately. Respect, Shiv ___ If your question is of interest to others as well, please add an entry to the Wiki! maillist : ntg-context@ntg.nl / https://mailman.ntg.nl/mailman3/lists/ntg-context.ntg.nl webpage : https://www.pragma-ade.nl / https://context.aanhet.net (mirror) archive : https://github.com/contextgarden/context wiki : https://wiki.contextgarden.net ___
[NTG-context] Re: Equivalent for hdots and hdotsfor
Hi,
On Sat, Dec 30, 2023 at 9:45 AM Shiv Shankar Dayal
wrote:
>
> In LaTeX, I can use \hdots for horizontal dots and \hdotsfor{n} to fill for
> several columns in a determinant. But these do not work in ConTeXt. What is
> the equivalent for these in ConTeXt?
You can try \HF or \HF[n].
\startTEXpage[offset=1DK]
\dm{
\startnamedmatrix[matrix:bars]
\NC 1 \NC x \NC x^2 \NC \ldots \NC x^{n-1} \NR
\NC 1 \NC y \NC y^2 \NC \ldots \NC y^{n-1} \NR
\HF[3] \NR
\NC 1 \NC z \NC z^2 \NC \ldots \NC z^{n-1} \NR
\stopnamedmatrix
}
\stopTEXpage
/Mikael
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[NTG-context] Re: Equivalent for hdots and hdotsfor
Shiv Shankar Dayal schrieb am 30.12.2023 um 09:41:
In LaTeX, I can use \hdots for horizontal dots and \hdotsfor{n} to
fill for several columns in a determinant. But these do not work in
ConTeXt. What is the equivalent for these in ConTeXt?
Can you show the desired output from LaTeX with a PDF file and a minimal
example of your ConTeXt version.
Wolfgang
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[NTG-context] Re: old style factorial symbol and theorems
Shiv Shankar Dayal schrieb am 30.12.2023 um 09:40:
I tried this for old style factorial, but it appears much below the
line in which it is used. How can I bring it up?
Replace the \inmframed command with \mcframed.
\define[1]\oldfact
{\mcframed[frame=off,strut=no,leftframe=on,bottomframe=on]{#1}}
Wolfgang
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[NTG-context] Re: Equivalent for hdots and hdotsfor
Never mind, I found the solution on list that we can use \dotfill and
\multispan{n}{\dotfill} as a substitute for what I have asked for.
On Sat, Dec 30, 2023 at 2:11 PM Shiv Shankar Dayal <
shivshankar.da...@gmail.com> wrote:
> In LaTeX, I can use \hdots for horizontal dots and \hdotsfor{n} to fill
> for several columns in a determinant. But these do not work in ConTeXt.
> What is the equivalent for these in ConTeXt?
>
> --
> Respect,
> Shiv Shankar Dayal
>
--
Respect,
Shiv Shankar Dayal
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[NTG-context] Equivalent for hdots and hdotsfor
In LaTeX, I can use \hdots for horizontal dots and \hdotsfor{n} to fill for
several columns in a determinant. But these do not work in ConTeXt. What is
the equivalent for these in ConTeXt?
--
Respect,
Shiv Shankar Dayal
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[NTG-context] Re: old style factorial symbol and theorems
I tried this for old style factorial, but it appears much below the line in
which it is used. How can I bring it up?
On Wed, Dec 27, 2023 at 6:18 PM Shiv Shankar Dayal <
shivshankar.da...@gmail.com> wrote:
>
>
> A simple alternative to tikz is the usage of \framed.
>>
>> \define[1]\oldfact
>> {\inmframed[frame=off,strut=no,leftframe=on,bottomframe=on]{#1}}
>>
>> \starttext
>>
>> \m{\oldfact{n}}
>>
>> \stoptext
>>
>> Wolfgang
>>
>> Thanks a lot. It should work nicely.
>
> --
> Respect,
> Shiv Shankar Dayal
>
--
Respect,
Shiv Shankar Dayal
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