@hackage wumpus-basic0.17.0

Kernel code for higher-level drawing built on Wumpus-Core. This package provides font loader code (limited to AFM font files) and a various drawing objects intended to be a higher-level basis to make vector drawings than the primitives (paths, text labels) provided by Wumpus-Core.

** WARNING ** - this package is alpha grade and it is strongly coupled to the package Wumpus-Drawing which is sub-alpha grade. The packages are split as it is expected they will have different development speeds - Wumpus-Basic needs polishing and refinement; Wumpus-Drawing simply needs a lot of work to move its components from proof-of-concept ideas to being readily usable.

NOTE - the demos that were previously included are now in the package Wumpus-Drawing.

Changelog:

v0.16.0 to v0.17.0:

• Changed representation of ContextFuns - context funs are no longer an arity family of newtypes. The new representation is simpler, but some of the opportunities for overloading have been lost.

• Substantial round of renaming for the DrawingContext types an query and update functions.

• Re-worked the font metrics and font loader modules. The new names should be more systematic. Removed the need for the GhostScript font modules to match PostScript names to GhostScript font files.

• Superceded the PointSupplyM class by adding snapping grid scaling to the DrawingContext.

• Removed ScalingContext module.

• Made text colour a distinct property in the DrawingContext. Text is now drawn with the text colour rather than the stroke colour.

• Added FontLoadLog to the DrawingContext - this allows access to the errors recorded during font loading.

v0.15.0 to v0.16.0:

• Moved the Geometry modules from Wumpus-Drawing into Wumpus-Basic.

• Re-worked the CtxPicture API, although the current naming scheme is not satisfactory.

• Added extra Anchor classes.

• Added PosImage object - this is a rectangle-framed object that can be drawn from any of its corners or its center.

• Added CF3, an arity three ContextFunction.

• Added Displacement module. This defines the PointDisplace type and provides a library of PointDisplace functions. Note - some of the new functions have taken names previously used for anchor projection functions (northwards, southwards, etc.), anchor projections are now build with the function projectAnchor.

• Added the property descender to the font metrics.

• Split drawing primitives from type in Objects.Graphic, drawing primitives are now in the module Objects.DrawingPrimitives.

v0.14.0 to v0.15.0:

• Split previous Wumpus-Basic package into two packages: Wumpus-Basic and Wumpus-Drawing. This is a pratical move to separate the developed (although not yet polished) Kernel and FontLoader code from the prototypical Drawing code.

• Renamed the Drawing object to CtxPicture. Although CtxPicture is a less pleasant name, it should be less confusing. A CtxPicture is the essentially the Picture type from Wumpus-Core with an implicit context - ContextPicture is simply too long and CtxPicture is almost jibberish but the previous unrelated name Drawing was not helpful.

• Kernel.Base.ScalingContext has been simplified. ScalingContexts are no longer manipulated via a custom Reader monad or transformer as the type signatures were too unwieldy.

• Added TextMargin to the DrawingContext - Wumpus-Drawing can now calculate more appealing bounding boxes for text.