The wumpus-core package
Wumpus is a low-level library for generating static 2D vector pictures, its salient feature is portability due to no FFI dependencies. It can generate PostScript (EPS) files and SVG files. The generated PostScript code is plain  and reasonably efficient as the use of stack operations, i.e gsave and grestore, is minimized.
Wumpus makes pictures from paths and text labels. Paths themselves are made from points. The usual affine transformations (rotations, scaling, translations) can be applied to Pictures. Unlike PostScript there is no notion of a current point, Wumpus builds pictures in a coordinate-free style.
For actually drawing pictures, diagrams, etc. Wumpus is very low-level. There is a supplemantary package wumpus-basic available that helps create certain types of diagram, but it is experimental - functionality is added and dropped between releases, it has no stable API.
Some of the design decisions made for wumpus-core are not sophisticated (e.g. how attributes like colour are handled, and how the bounding boxes of text labels are calculated), so Wumpus might be limited compared to other systems. However, the design permits a fairly simple implementation, which is a priority.
 Because the output is simple, straight-line PostScript code, it is possible to use GraphicsMagick or a similar tool to convert EPS files generated by Wumpus to many other formats (bitmaps).
0.34.0 to 0.35.0:
Bug fix - PostScript output - when more than one stroke property changed the changes were concatenated without a separator. This generated invalid PostScript. Now fixed.
Documentation updates to the guide and the Haddock docs.
|Versions||0.12.0, 0.13.0, 0.13.1, 0.14.0, 0.15.0, 0.16.0, 0.17.0, 0.18.0, 0.19.0, 0.20.0, 0.21.0, 0.22.0, 0.23.0, 0.30.0, 0.31.0, 0.32.0, 0.33.0, 0.34.0, 0.35.0, 0.36.0, 0.37.0, 0.40.0, 0.41.0, 0.42.0, 0.42.1, 0.43.0, 0.50.0, 0.51.0, 0.52.0, 0.52.1|
|Dependencies||algebra (>=0.0.0.1 && <0.1), base (<5), containers (>=0.3 && <=0.4), time (>=1.1.3 && <1.2), vector-space (>=0.6 && <1.0) [details]|
|Copyright||Stephen Tetley <email@example.com>|
|Maintainer||Stephen Tetley <firstname.lastname@example.org>|
|Uploaded||Wed Oct 6 17:06:23 UTC 2010 by StephenTetley|
|Updated||Sat Nov 7 12:28:08 UTC 2015 by HerbertValerioRiedel to revision 1|
|Downloads||5294 total (6 in the last 30 days)|
|Status||Docs uploaded by user
Build status unknown [no reports yet]
For package maintainers and hackage trustees