Hi all!
Using the example below I have completed a test using a larger book.
This time I downloaded War and Peace from the Gutenberg Project and
extracted the individual xhtml files for Context.
I played around with the setups for the align:pass:test4 code below, as
Hans suggested, and it was changing the \tolerance value which made the
difference. Increasing the \tolerance value to 1000 eliminated all
overfull hboxes but still left 79 underfull hboxes. I continued to
increase the \tolerance value up to 6600 and was left with two overfull
hboxes. One with a badness of 6641 (warAndPeace1.png) and one with a
badness of 1097 (warAndPeace2.png). Above the \tolerance of 6600 only
warAndPeace2.png was left with a badness of 1097. Both of these
underfull hboxes were at the beginning of a paragraph - "To his Honor"
in the first png and "Well, you see," in the second png. I not sure a
reader would spot the second png badness but the first is noticeable to
my eyes.
I'm very pleased how the book has turned out, all 1668 pages of it as an
approximately 13cm by 20cm book. The pdf is 4MB and each run in ConTeXt
takes about 10 seconds on my M1 mac mini.
I'm interested in seeing how \setupalignpass develops and learning more
of how to use it.
Best Wishes
Keith McKay
On 21/07/2023 17:33, Keith McKay wrote:
Thanks Hans!
I'll have a play and keep an eye on updates
Best Wishes
Keith
On 21/07/2023 17:10, Hans Hagen via ntg-context wrote:
Hi Keith,
Here an example that Mikael made for such a book:
\showframe
% let's very strict
\startsetups [*default]
\directsetup{*reset}
\frozen\widowpenalty 10000
\frozen\clubpenalty 10000
\frozen\displaywidowpenalty 10000
\frozen\brokenpenalty 0 % \defaultbrokenpenalty
\stopsetups
% we enable the use of expansion (this feature might become preset
% because we now delay setting the vectors anyway so less overhead)
\definefontfeature
[default]
[default]
[expansion=quality,
protrusion=quality,
itlc=yes]
% vertical expansion
\setuplayout
[vz=2]
% for which we need:
% \setupalign[hanging,depth,stretch,granular]
\setupalign[depth,stretch,granular]
% here are the passes:
\startsetups align:pass:test4
\pretolerance 100
\tolerance 200
\parpasses 4
classes \indecentparpassclasses
threshold 0.025pt
adjustspacing 3
adjustspacingstep 1
adjustspacingshrink 5
adjustspacingstretch 10
next
classes \indecentparpassclasses
threshold 0.025pt
adjustspacing 3
adjustspacingstep 1
adjustspacingshrink 10
adjustspacingstretch 20
next
classes \indecentparpassclasses
threshold 0.025pt
adjustspacing 3
adjustspacingstep 1
adjustspacingshrink 25
adjustspacingstretch 50
next
classes \indecentparpassclasses
threshold 0.025pt
adjustspacing 3
adjustspacingstep 1
adjustspacingshrink 50
adjustspacingstretch 100
\relax
\stopsetups
\setupalignpass[test4]
\starttext
...
\stoptext
(work in progress so keep an eye on updates)
Hans
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Hans Hagen | PRAGMA ADE
Ridderstraat 27 | 8061 GH Hasselt | The Netherlands
tel: 038 477 53 69 | www.pragma-ade.nl | www.pragma-pod.nl
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