Taco Hoekwater
MAPS 2012.2 (English/Dutch)
MAPS 45, 2012, 1-168
maps.pdf (36589kb)
NTG's magazine

Conference program (English)
MAPS 45, 2012, 1-2
01.pdf (25kb)

Kees van der Laan
Recreational use of TeX&Co (English)
MAPS 45, 2012, 3-46
02.pdf (17707kb)
Acrobat Pro, Adobe, backtracking, BLUe, Blue Sky, bridge, chess, ConTeX t, crosswords, dancing text, Deubert, Escher, Gabo, Hagen, Henderson, Jackowski, Lancaster, Lauwerier, Lindenmayer, magic square, Malevich, MetaFun, MetaPost, Metafont, MetaType1, Mondriaan, Monte Carlo, musiX.tex, Nolde, Photoshop, pi-decimals, projection, PSlib, PSTricks, PSView, Pythagoras tree, Rycko, Schrofer, Soto, Taupin, TeX works, tic-tac-toe, Vasarely
Recreational use of TeX&Co in my work is enumerated and elucidated. Examples from MetaFun, from Lancaster's Fonts for Free, from Jackowski&Rycko metafont logo, and from Word have been borrowed. PostScript and let TeX insert mark-up, will be the main subjects of discussion. PostScript is not sufficient for graphics. Now and then MetaPost is used to specify a problem in a declarative way, or at the end Photoshop is used to enrich the graphics interactively by colour gradients. Moreover, for drawing emulations of 3D objects, projection techniques are indispensable. Emulations of Escher's impossible cube and of Gabo's objects are included as 3D-examples. All my pictures have a recreational flavour because none has been triggered by external practical need. Interesting is the combined use of Turtle Graphics and recursion. TeX codes and PostScript codes are compared, although they are like apples and pears intrinsically incomparable, but ... have been used for the same purpose. The most astonishing is that so much from BLUe.tex passed by unnoticed. Pic.dat for TeX-alone pictures has received its cousin library, PSlib.eps, for PostScript pictures. The TeX-MF-flow picture has been updated and included, next to a screen-shot of a nowadays IDE TeX works. In this note I'll try to draw your interest, to persuade you, kind reader, to look at the contents, the paradigms, and the kernel and modules set-up of BLUe.tex. My sincere hope is that BLUe.tex will be saved from oblivion, that the paradigms used will be adhered. The serious undertone in TeX is about minimal mark-up or better still the absence of user mark-up, where TeX will insert the mark-up. The serious undertone in PostScript is about printing along paths, especially for the special cases where the paths are implicit. Handy and convenient is the extended PSlib.eps to over 300 pictures. Critics on TeX&Co and pdfTeX have been included, next to my wishes. After the presentation PSTtricks was shown to me, and my comment on it is included.

Kees van der Laan
Julia fractals in PostScript - Fractal Geometry II (English)
MAPS 45, 2012, 47-97
03.pdf (12828kb)
Adobe, attractor, Barnsley, bifurcation, chaos, escape-time algorithm, Feigenbaum constant, fractalD, Fractalus package, IFS, Julia, Lauwerier, Mandelbrot, Monte Carlo, PSlib, PSView, repeller, self-similarity, Stuif's previewer, TeX works, Verhulst growth model, Winfract package, XaoS fractal package
Lauwerier's BASIC codes for visualization of the usual Julia fractals: JULIAMC, JULIABS, JULIAF, JULIAD, JULIAP, of the Mandelbrot fractal MANDELx, MANDIS, MANDET and his codes for the advanced circular symmetric Julia fractals JULIAS, JULIASYMm, JULIASYM, FRACSYMm, as well as the classical 1D bifurcation picture Collet, have been converted into PostScript defs. Examples of use are included. A glimpse into Chaos theory, in order to understand the principles and peculiarities underlying Julia sets, is given. Bifurcation diagrams of the Verhulst model of limited growth and of the Julia quadratic dynamical system --- M-fractal --- have been included. Barnsley's triples: fractal, IFS and equivalent dynamical system are introduced. How to use the beginnings of colours in PostScript is explained. How to obtain Julia fractals via Stuif's Julia fractal viewer, and via the special fractal packages Winfract, XaoS, and Fractalus is dealt with. From BASIC codes to PostScript library defs entails software engineering skills. The paper exhibits experimental fractal geometry, practical use of minimal TeX, as well as ample EPSF programming, and is the result of my next step in acquainting myself with Lauwerier's 10+ years work on fractals.

Mari Voipio
CrafTeX (English)
MAPS 45, 2012, 98-98
04.pdf (28kb)

Taco Hoekwater
MetaPost: PNG Output (English)
MAPS 45, 2012, 99-100
05.pdf (49kb)
The latest version of Metapost (1.80x) has a third output backend: it is now possible to generate PNG bitmaps directly from within Metapost.

Leo Arnold
Multiple documents from one source (English)
MAPS 45, 2012, 101-106
06.pdf (514kb)
mathematics, problem sheet, shell escape
In general LaTeX will produce only one output document. This paradigm shifts when harnessing the power of the so-called shell escape. We will show how to produce multiple output documents with differing content from one single source document. The principle is developed step by step illustrating a typical application in academic teaching. Focusing on mathematical problems we then explore two ways of automating calculations by integrating free software into the LaTeX run.

Patrick Gundlach
Database publishing with LuaTeX and the speedata Publisher (English)
MAPS 45, 2012, 107-107
07.pdf (28kb)

Taco Hoekwater
MetaPost path resolution isolated (English)
MAPS 45, 2012, 108-111
08.pdf (74kb)
A new interface in MPLib version 1.800 allows one to resolve path choices programmatically, without the need to go through the MetaPost input language.

Taco Hoekwater
Parsing PDF content streams with LuaTeX (English)
MAPS 45, 2012, 112-115
09.pdf (63kb)
The new pdfparser library in LuaTeX allows parsing of external PDF content streams directly from within a LuaTeX document. This paper explains its origin and usage.

Luigi Scarso
MFLua: Instrumentation of MF with Lua (English)
MAPS 45, 2012, 116-123
10.pdf (585kb)
We present MetafontLUA, a Metafont version which is capable of code instrumentation and has an embedded Lua interpreter that allows glyphs curves extraction and post-processing. We also show and discuss an example of a Metafont source processed by MetafontLUA to output an OpenType font.

Willi Egger
Conference portfolio (English)
MAPS 45, 2012, 124-127
11.pdf (58kb)
In accordance to the conference's theme, a workshop for making a portfolio binder has been held. The portfolio was made so it could carry the papers for the conference, such as preprints of the proceedings, additional papers and the carpenter's pencil given to each participant. The construction is made from a single sheet of cardboard with folded flaps along three sides, so that it completely envelopes the content. The portfolio is held closed by a black elastic band.

Hans Hagen, Idris Samawi Hamid
Oriental TeX: optimizing paragraphs (English)
MAPS 45, 2012, 128-154
12.pdf (3321kb)

Jean-Michel Hufflen
mlBibTeX and Its New Extensions (English)
MAPS 45, 2012, 155-162
13.pdf (129kb)
BibTeX, mlBibTeX, mlbibtex2xml, mlbiblatex, mlbibcontext, LaTeX, ConTeXt MkII, ConTeXt MkIV, LuaTeX, biblatex package, bib module
These last years, mlBibTeX's kernel functions have been reused and extended in order to put new programs about bibliographies into action. Examples are the hal program, allowing an open archive site to be populated, the mlbiblatex program, building bibliographies suitable for the biblatex package, the mlbibcontext program, doing the same task for ConTeXt documents. We show how all these programs are organised, and explain how some operations can be refined or extended. For a point of view related to efficiency, the programs mlbiblatex and mlbibcontext are written using pgScheme only, so they are more efficient than analogous programs that would interpret a .bst bibliography style of BibTeX.

Jean-Michel Hufflen
Demonstration of the `mlbibcontext' Program (English)
MAPS 45, 2012, 163-164
14.pdf (66kb)
This short statement aims to sketch the broad outlines of the presentation performed at the 6th ConTeXt meeting.

Abstracts without papers (English)
MAPS 45, 2012, 165-166
15.pdf (42kb)

participant list (English)
MAPS 45, 2012, 167-168
16.pdf (36kb)