wumpus-core: Pure Haskell PostScript and SVG generation.

[ bsd3, graphics, library ] [ Propose Tags ]

Wumpus - (W)riter (M)onad (P)ost (S)cript.

Wumpus is a library for generating 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 quite efficient (no unnecessary stack operations) and plain [1].

Pictures in Wumpus are made from paths and text labels. Paths themselves are made from points. The usual affine transformations (rotations, scaling, translations) can be applied to all geometric objects. Unlike PostScript there is no notion of a current point, Wumpus builds pictures in a coordinate-free style. There is a set of combinators for composing pictures (more-or-less similar to the usual pretty printing combinators).


For actually drawing pictures, diagrams, etc. Wumpus is very low level. I am working on a complementary package wumpus-extra with higher-level stuff (polygons, arrows etc.) but it is far too unstable for Hackage. Preview releases can be found at http://code.google.com/p/copperbox/ though.

Wumpus-core should be fairly stable from now on, except for the fact that more modules are exposed than strictly necessary this is so their Haddock docs are available. Client's should only import the Wumpus.Core module. There may be some name changes etc. that will change interfaces, but Wumpus has been carefully implemented. Some of the design decisions are not sophisticated (e.g. how attributes like colour are handled, and the bounding boxes of text labels are calculated), so Wumpus might be limited compared to other systems but its design permits a simple implementation - which is a priority. Text encoding is the exception, the current implementation appears reasonable for Latin 1 but I'm not sure about other character sets, and I might have to revise it significantly.

There is no documentation - the graphics model used by Wumpus is different to PostScript or SVG, and Wumpus really needs a manual. Unfortunately there isn't one yet, and I will be focusing on wumpus-extra for the foreseeable future so a manual won't be written soon. If you want FFI-free vector graphics and Wumpus seems to otherwise fit the task, please email me and I will try to help.

\[1\] Because the output is simple, straight-line PostScript code it is possible to use GraphicsMagick or similar tools to convert Wumpus's EPS files to many other formats (bitmaps).

Versions [RSS] [faq] 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 (<0.1), base (<5), containers, data-aviary (>0.1.0), dlist, monadLib, old-time, vector-space, wl-pprint, xml [details]
License BSD-3-Clause
Copyright Stephen Tetley <stephen.tetley@gmail.com>
Maintainer Stephen Tetley <stephen.tetley@gmail.com>
Revised Revision 1 made by HerbertValerioRiedel at 2015-11-07T12:18:17Z
Category Graphics
Home page http://code.google.com/p/copperbox/
Uploaded by StephenTetley at 2009-11-24T22:46:42Z
Distributions NixOS:0.52.1
Downloads 23197 total (97 in the last 30 days)
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Status Hackage Matrix CI
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