Safe Haskell	Safe-Inferred
Language	Haskell98

Sound.Tidal.Time

Synopsis

Documentation

type Time = Rational Source

Time is represented by a rational number. Each natural number represents both the start of the next rhythmic cycle, and the end of the previous one. Rational numbers are used so that subdivisions of each cycle can be accurately represented.

type Arc = (Time, Time) Source

(s,e) :: Arc represents a time interval with a start and end value. { t : s <= t && t < e }

type Event a = (Arc, a) Source

An Event is a value that occurs during the given Arc

sam :: Time -> Time Source

The starting point of the current cycle. A cycle occurs from each natural number to the next, so this is equivalent to floor.

nextSam :: Time -> Time Source

The end point of the current cycle (and starting point of the next cycle)

cyclePos :: Time -> Time Source

The position of a time value relative to the start of its cycle.

isIn :: Arc -> Time -> Bool Source

isIn a t is True iff t is inside the arc represented by a.

arcCycles :: Arc -> [Arc] Source

Splits the given Arc into a list of Arcs, at cycle boundaries.

subArc :: Arc -> Arc -> Maybe Arc Source

subArc i j is the arc that is the intersection of i and j.

mapArc :: (Time -> Time) -> Arc -> Arc Source

Map the given function over both the start and end Time values of the given Arc.

mirrorArc :: Arc -> Arc Source

Returns the `mirror image' of an Arc, used by Sound.Tidal.Pattern.rev.

eventStart :: Event a -> Time Source

The start time of the given Event

midPoint :: Arc -> Time Source

The midpoint of an Arc