BishBosh.Cartesian.Abscissa

AUTHOR

Dr. Alistair Ward

DESCRIPTION

• Describes the x-axis by which the board is indexed.
• AKA the file of a piece.
• N.B. this coordinate-system is for internal use only, and doesn't attempt to replicate any standard chess-notation.

Constants

xLength :: X

The constant length of the x-axis.

xMin :: X

xMax :: X

xBounds :: (X, X)

The constant bounds of abscissae.

xRange :: [X]

The constant list of all abscissae.

bishopsFiles :: [X]

The conventional starting files for the Bishops of either logical colour.

kingsFile :: X

The conventional starting file for the King of either logical colour.

Functions

toIx :: X -> Int

Convert to an array-index.

fromIx :: Int -> X

Convert from an array-index.

reflect :: X -> X

Reflects about the mid-point of the axis.

translate :: (X -> X) -> X -> X

Translate the specified ordinate.

maybeTranslate :: (X -> X) -> X -> Maybe X

Where legal, translate the specified abscissa.

getAdjacents :: X -> [X]

Get the abscissae immediately left & right.

Constructors

listArrayByAbscissa :: IArray a e => [e] -> a X e

Array-constructor.

Predicates

inBounds :: X -> Bool

Predicate.