wumpus-core-0.13.0: wumpus-core.cabal
name: wumpus-core
version: 0.13.0
license: BSD3
license-file: LICENSE
copyright: Stephen Tetley <stephen.tetley@gmail.com>
maintainer: Stephen Tetley <stephen.tetley@gmail.com>
homepage: http://code.google.com/p/copperbox/
category: Graphics
synopsis: Pure Haskell PostScript and SVG generation.
description:
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 plain [1] and quite efficient
(no unnecessary stack operations).
.
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).
.
THE DRAWBACKS...
.
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 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. 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. However
its design permits a simple implementation - which is a
priority. Text encoding an exception, I\'m not sure how
reasonable the design is. The current implementation appears
okay for Latin 1 but I\'m not sure about other character sets,
and I may 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 a similar tool to
convert Wumpus'\s EPS files to many other formats (bitmaps).
.
Changelog:
.
0.12.0 to 0.13.0:
.
* More Haddock documenting.
.
* @lowerLeftUpperRight@ removed from "Wumpus.Core.BoundingBox".
.
* Added range checking and Ord obligation to the @bbox@
\'smart\' constructor.
.
* Numeric instances for "Wumpus.Core.Colour" improved.
.
* MatrixMult type class simplified
.
* Dash Pattern made a list of on-off pairs rather than just a
list
.
* The modules - Wumpus.Core.PictureInternal, Wumpus.Core.PostScript,
Wumpus.Core.SVG & Wumpus.Core.Utils - are no longer exposed.
.
* Various operators in "Wumpus.Core.PictureLanguage" changed.
.
* Wumpus.Core.TextEncoding split into an internal and a public
module (internal - Wumpus.Core.TextEncodingInternal, public -
Wumpus.Core.TextEncoder).
.
build-type: Simple
stability: highly unstable
cabal-version: >= 1.2
extra-source-files:
CHANGES,
LICENSE,
demo/LabelPic.hs,
demo/Picture.hs
library
hs-source-dirs: src
build-depends: base < 5, containers, old-time,
wl-pprint, vector-space,
monadLib, xml, dlist, algebra,
data-aviary > 0.1.0
exposed-modules:
Wumpus.Core,
Wumpus.Core.AffineTrans,
Wumpus.Core.BoundingBox,
Wumpus.Core.Colour,
Wumpus.Core.FontSize,
Wumpus.Core.Geometry,
Wumpus.Core.GraphicsState,
Wumpus.Core.OutputPostScript,
Wumpus.Core.OutputSVG,
Wumpus.Core.Picture,
Wumpus.Core.PictureLanguage,
Wumpus.Core.TextEncoder,
Wumpus.Core.TextLatin1
other-modules:
Wumpus.Core.PictureInternal,
Wumpus.Core.PostScript,
Wumpus.Core.SVG,
Wumpus.Core.TextEncodingInternal,
Wumpus.Core.Utils
extensions:
ghc-options:
includes: