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Diffstat (limited to 'doc/context/sources/general/manuals/ontarget')
5 files changed, 277 insertions, 0 deletions
diff --git a/doc/context/sources/general/manuals/ontarget/ontarget-contents.tex b/doc/context/sources/general/manuals/ontarget/ontarget-contents.tex new file mode 100644 index 000000000..f0a733b01 --- /dev/null +++ b/doc/context/sources/general/manuals/ontarget/ontarget-contents.tex @@ -0,0 +1,13 @@ +% language=us runpath=texruns:manuals/ontarget + +\startcomponent ontarget-contents + +\environment ontarget-style + +\starttitle[title={Table of contents}] + + \placelist[chapter] + +\stoptitle + +\stopcomponent diff --git a/doc/context/sources/general/manuals/ontarget/ontarget-introduction.tex b/doc/context/sources/general/manuals/ontarget/ontarget-introduction.tex new file mode 100644 index 000000000..f7ac0a19d --- /dev/null +++ b/doc/context/sources/general/manuals/ontarget/ontarget-introduction.tex @@ -0,0 +1,104 @@ +% language=us runpath=texruns:manuals/ontarget + +\startcomponent ontarget-introduction + +\environment ontarget-style + +\startchapter[title={Introduction}] + +This is the seventh wrapup of the \LUATEX\ and \LUAMETATEX\ development cycle. It +is dedicated to all those users who kept up with developments and are always +willing to test the new features. Without them a project like this would not be +possible. + +At the time this introduction is written the \LUAMETATEX\ code base is rather +stable and quite a bit of the \MKIV\ code base has been adapted to new situation. +But, as usual, there are always new possibilities to explore, so I expect that +this document will grow over time as did the others. I'm not going to repeat all +that has been done because that's what the previous episodes are about. + +As the title suggest, we're still on target. When the \LUAMETATEX\ project +started there actually was no deadline formulated so in fact we're always on +target. The core components \TEX, \METAPOST, and \LUA\ are all long term efforts +so we're in no hurry at all. However, this is the year that a fast pace will +become a slow pace with respect to the \LUAMETATEX\ code base. There are still +some things on the agenda but in principle the goals are reached. One problem in +today's code development is that useability and quality seems to relate to the +amount of changes in code. No update can mean old, unusable and uninteresting. +It's probably why some sources get this silly yearly copyright year update. +However, the update cycle of good old \TEX\ has an decade interval by now while +it is still a pretty useable program. It would be nice to end up in such a long +term cycle with \LUAMETATEX: bug fixes only. + +Although \CONTEXT\ has always adapted early to new developments (color, graphics, +\PDF, \METAPOST, \ETEX, \PDFTEX, \LUATEX, \UTF, fonts) the effects on the +\CONTEXT\ code base are mostly hidden for users. There have been some changes +between \MKII\ and \MKIV, simply because there has been a shift from specific +eight bit encodings to \UTF\ and \TYPEONE\ to \OPENTYPE\ fonts. Both had an +impact on important subsystems: input encodings, font definitions and features, +language and script support. On other subsystems the impact was hardly +noticeable, like for instance backend related features (these have always been +kind of abstract). That doesn't mean that these haven't changed deep down, they +definitely have. Some mechanisms became better in \MKIV, simply because less +hackery was needed. My experience is that when users see that it gets better or +easier, they are also willing to adapt the few lines in their document source +that benefit from it. Of course the impact on the \METAPOST\ integration in +\CONTEXT\ had a real large impact, especially in terms of performance. + +The upgrade to \LMTX, the version of \CONTEXT\ for \LUAMETATEX, is even less +visible although already some new mechanisms showed up. This time a couple of +engine specific features have been improved and made more flexible. In fact, the +whole code base of the engine has been overhauled. This happened stepwise because +we had to make sure all things kept working. As a first step code was made +independent of the compilation infrastructure and the dependencies, other than a +very few small ones, have been removed. The result is a rather lean and mean +setup, even when we consider what has been added at the primitive level and +traditional subsystems. A benefit is that in the meantime the \LUAMETATEX\ \LMTX\ +combination outperforms \LUATEX\ with \MKIV, something that was not ensured when +the built|-|in \PDF\ backend was removed and delegated to \LUA. By binding +development closely to \CONTEXT\ we also hope that the code base stays clean of +arbitrary extensions. + +Because in the end, \TEX\ is also a programming language, there have been +extensions that make programming easier. There is already a stable middle layer +of auxiliary macros in \CONTEXT\ that help the user who likes to program but +doesn't like real low level primitives and dirty tricks, but by extending the +primitive repertoire a bit users can now stay closer to the original \TEX\ +concepts. Adding more and more layers of indirectness makes no sense if we can +improve the bottom programming layer. It also makes coding a bit more natural +(the \TEX\ look), apart from offering performance benefits. This is where you can +see differences between the \MKIV\ and \LMTX\ code base which for that reason is +now nearly split completely. The \METAPOST\ subsystem has been extended with +proper scanners so that we can enhance the interfaces in a natural way and as a +result we also have an upgraded code base there. We also moved to \LUA 5.4 and +will keep up as long as compatibility is no issue. Some \LUA\ code is likely to +remain common between \MKIV\ and \LMTX, for instance font handling and helpers +but we'll see where that ends. + +The \LUAMETATEX\ engine provides control over most internals and there are all +kind of new interesting features. Decades of \CONTEXT\ development are behind +that. Also, in the days that there were discussions about extending \TEX, +\CONTEXT\ was not that much of influence and on the road to and from user group +meetings, Taco and I often discussed what we'd like to see added (and some was +actually implemented in \type {eetex} but that only lived on our machines. One +can consider \LUATEX\ to be a follow up on that, and \LUAMETATEX\ in turn follows +up on that project, which we both liked doing a lot. In some way \LUATEX\ lowered +the boundary for implementing some of the more intrusive extensions in +\LUAMETATEX\ and the follow up on \MPLIB. And once you start along that road +small steps become large steps and one can as well be try to be as complete as +possible. We've come a long way but eventually arrived at the destination. +Personally I think we got there by not being in a hurry. + +But even targets that are reached can eventually move, + +\blank[2*big] + +\startlines +Hans Hagen +Hasselt NL +August 2021\high{++} +\stoplines + +\stopchapter + +\stopcomponent diff --git a/doc/context/sources/general/manuals/ontarget/ontarget-style.tex b/doc/context/sources/general/manuals/ontarget/ontarget-style.tex new file mode 100644 index 000000000..eac3ffe31 --- /dev/null +++ b/doc/context/sources/general/manuals/ontarget/ontarget-style.tex @@ -0,0 +1,68 @@ +% language=us runpath=texruns:manuals/ontarget + +\startenvironment ontarget-style + +\usemodule[abbreviations-smallcaps] +\usemodule[scite] + +\enableexperiments[fonts.compact] + +\logo [LUAMETATEX] {LuaMeta\TeXsuffix} + +\setupbodyfont[plex,10pt] % not that ok for titling + +\setuplayout + [width=middle, + height=middle, + header=0pt, + footer=1cm, + footerdistance=5mm, + backspace=2cm, + cutspace=15mm, + topspace=2cm, + bottomspace=1cm, + style=bold, + color=maincolor] + +\setuppagenumbering + [alternative=doublesided] + +\setupwhitespace + [big] + +\setupfootertexts + [][{\getmarking[chapter]\quad\pagenumber}] + [{\pagenumber\quad\getmarking[chapter]}][] + +\definecolor + [maincolor] + [darkred] + +\setuphead + [chapter] + [style=\bfc, + color=maincolor] + +\setuphead + [section] + [style=\bfa, + color=maincolor] + +\setuphead + [subsection] + [style=\bf, + color=maincolor] + +\setupalign + [tolerant,stretch] + +\setuptyping + [color=maincolor] + +\setuptype + [color=maincolor] + +\setupitemize + [color=maincolor] + +\stopenvironment diff --git a/doc/context/sources/general/manuals/ontarget/ontarget-titlepage.tex b/doc/context/sources/general/manuals/ontarget/ontarget-titlepage.tex new file mode 100644 index 000000000..516955f7e --- /dev/null +++ b/doc/context/sources/general/manuals/ontarget/ontarget-titlepage.tex @@ -0,0 +1,73 @@ +% language=us runpath=texruns:manuals/ontarget + +\startcomponent ontarget-titlepage + +\environment ontarget-style + +\startMPpage[pagestate=stop] + +StartPage ; + + picture p ; p := image ( + + numeric d ; d := 6.5 ; + + path c ; c := fullcircle scaled 40 shifted (2,7) ; + + path e ; e := + (0,0) -- (3,0) -- + (3,1) -- (1,1) -- + (1,2) -- (3,2) -- + (3,3) -- (1,3) -- + (1,4) -- (3,4) -- + (3,4) -- (3,4) -- + (3,5) -- (0,5) -- cycle ; + + path r ; r := ((0,0) -- (3,0) -- (3,5) -- (0,5)) -- reverse e -- cycle; + + path q ; q := fullsquare xyscaled (3,60) shifted (3/2,0) ; + + fill c withcolor "lightgray" ; + + fill q withpen pencircle scaled 1/5 withcolor "white" ; + + for i=-25 step 5 until 35 : + fill (if (i mod 10) = 0 : e else : r fi) shifted (0,i - d) withcolor "darkred" ; + endfor ; + + draw q withpen pencircle scaled 1/5 withcolor "darkgray" ; + + for i=-25 step 10 until 30 : + draw textext.lft("\tttf " & decimal ((i/10)+21.5)) ysized 3 + shifted (9,19 + i-6.5 - d) withcolor "darkgray" ; + endfor ; + + draw ((-25, 0) -- (25, 0)) shifted center c withpen pencircle scaled 2/10 withcolor "yellow" ; + draw (( 0,-25) -- ( 0,25)) shifted center c withpen pencircle scaled 2/10 withcolor "yellow" ; + + clip currentpicture to c ; + draw c withpen pencircle scaled 4/10 withcolor "yellow" ; + ) ; + + fill Page withcolor "darkred" ; + + p := p shifted - center p ; + + draw p scaled 6mm + shifted center Page + shifted (0mm,50mm) ; + + draw image (draw textext ("\tt\bf on\thinspace target") xsized (16cm) withcolor "yellow") + shifted center bottomboundary Page + shifted (0mm,45mm) ; + + draw image (draw textext ("\tttf luametatex & context lmtx") xsized (13cm) withcolor "yellow") + shifted center bottomboundary Page + shifted (0mm,20mm) ; + +StopPage ; + +\stopMPpage + +\stopcomponent + diff --git a/doc/context/sources/general/manuals/ontarget/ontarget.tex b/doc/context/sources/general/manuals/ontarget/ontarget.tex new file mode 100644 index 000000000..c66318030 --- /dev/null +++ b/doc/context/sources/general/manuals/ontarget/ontarget.tex @@ -0,0 +1,19 @@ +% language=us runpath=texruns:manuals/ontarget + +\environment ontarget-style + +\dontcomplain + +\startdocument + + \component ontarget-titlepage + + \startfrontmatter + \component ontarget-contents + \stopfrontmatter + + \startbodymatter + \component ontarget-introduction + \stopbodymatter + +\stopdocument |