Copyright	(c) 2013-2015 diagrams-lib team (see LICENSE)
License	BSD-style (see LICENSE)
Maintainer	diagrams-discuss@googlegroups.com
Safe Haskell	None
Language	Haskell2010

Diagrams.Located

Description

"Located" things, i.e. things with a concrete location: intuitively, Located a ~ (a, Point). Wrapping a translationally invariant thing (e.g. a Segment or Trail) in Located pins it down to a particular location and makes it no longer translationally invariant.

Synopsis

data Located a = Loc {
- loc :: Point (V a) (N a)
- unLoc :: a
}
at :: a -> Point (V a) (N a) -> Located a
viewLoc :: Located a -> (Point (V a) (N a), a)
mapLoc :: SameSpace a b => (a -> b) -> Located a -> Located b
located :: SameSpace a b => Lens (Located a) (Located b) a b
_loc :: Lens' (Located a) (Point (V a) (N a))

Documentation

data Located a Source #

"Located" things, i.e. things with a concrete location: intuitively, Located a ~ (Point, a). Wrapping a translationally invariant thing (e.g. a Segment or Trail) in Located pins it down to a particular location and makes it no longer translationally invariant.

Located is intentionally abstract. To construct Located values, use at. To destruct, use viewLoc, unLoc, or loc. To map, use mapLoc.

Much of the utility of having a concrete type for the Located concept lies in the type class instances we can give it. The HasOrigin, Transformable, Enveloped, Traced, and TrailLike instances are particularly useful; see the documented instances below for more information.

Constructors

Loc
Fields loc :: Point (V a) (N a) Project out the location of a `Located` value. unLoc :: a Project the value of type `a` out of a `Located a`, discarding the location.

Instances

(Eq (V a (N a)), Eq a) => Eq (Located a) Source #
Instance details Defined in Diagrams.Located Methods (==) :: Located a -> Located a -> Bool # (/=) :: Located a -> Located a -> Bool #
(Ord (V a (N a)), Ord a) => Ord (Located a) Source #
Instance details Defined in Diagrams.Located Methods compare :: Located a -> Located a -> Ordering # (<) :: Located a -> Located a -> Bool # (<=) :: Located a -> Located a -> Bool # (>) :: Located a -> Located a -> Bool # (>=) :: Located a -> Located a -> Bool # max :: Located a -> Located a -> Located a # min :: Located a -> Located a -> Located a #
(Read (V a (N a)), Read a) => Read (Located a) Source #
Instance details Defined in Diagrams.Located Methods readsPrec :: Int -> ReadS (Located a) # readList :: ReadS [Located a] # readPrec :: ReadPrec (Located a) # readListPrec :: ReadPrec [Located a] #
(Show (V a (N a)), Show a) => Show (Located a) Source #
Instance details Defined in Diagrams.Located Methods showsPrec :: Int -> Located a -> ShowS # show :: Located a -> String # showList :: [Located a] -> ShowS #
Generic (Located a) Source #
Instance details Defined in Diagrams.Located Associated Types type Rep (Located a) :: Type -> Type # Methods from :: Located a -> Rep (Located a) x # to :: Rep (Located a) x -> Located a #
(Serialize a, Serialize (V a (N a))) => Serialize (Located a) Source #
Instance details Defined in Diagrams.Located Methods put :: Putter (Located a) # get :: Get (Located a) #
Enveloped a => Juxtaposable (Located a) Source #
Instance details Defined in Diagrams.Located Methods juxtapose :: Vn (Located a) -> Located a -> Located a -> Located a #
Enveloped a => Enveloped (Located a) Source #	The envelope of a `Located a` is the envelope of the `a`, translated to the location.
Instance details Defined in Diagrams.Located Methods getEnvelope :: Located a -> Envelope (V (Located a)) (N (Located a)) #
(Traced a, Num (N a)) => Traced (Located a) Source #	The trace of a `Located a` is the trace of the `a`, translated to the location.
Instance details Defined in Diagrams.Located Methods getTrace :: Located a -> Trace (V (Located a)) (N (Located a)) #
Qualifiable a => Qualifiable (Located a) Source #
Instance details Defined in Diagrams.Located Methods (.>>) :: IsName a0 => a0 -> Located a -> Located a #
(Additive (V a), Num (N a), Transformable a) => Transformable (Located a) Source #	Applying a transformation `t` to a `Located a` results in the transformation being applied to the location, and the linear portion of `t` being applied to the value of type `a` (i.e. it is not translated).
Instance details Defined in Diagrams.Located Methods transform :: Transformation (V (Located a)) (N (Located a)) -> Located a -> Located a #
(Num (N a), Additive (V a)) => HasOrigin (Located a) Source #	`Located a` is an instance of `HasOrigin` whether `a` is or not. In particular, translating a `Located a` simply translates the associated point (and does not affect the value of type `a`).
Instance details Defined in Diagrams.Located Methods moveOriginTo :: Point (V (Located a)) (N (Located a)) -> Located a -> Located a #
(Metric v, OrderedField n) => Reversing (Located (Trail v n)) Source #	Same as `reverseLocTrail`.
Instance details Defined in Diagrams.Trail Methods reversing :: Located (Trail v n) -> Located (Trail v n) #
(Metric v, OrderedField n) => Reversing (Located (Trail' l v n)) Source #	Same as `reverseLocLine` or `reverseLocLoop`.
Instance details Defined in Diagrams.Trail Methods reversing :: Located (Trail' l v n) -> Located (Trail' l v n) #
(InSpace v n a, Fractional n, HasArcLength a, Codomain a ~ v) => HasArcLength (Located a) Source #
Instance details Defined in Diagrams.Located Methods arcLengthBounded :: N (Located a) -> Located a -> Interval (N (Located a)) Source # arcLength :: N (Located a) -> Located a -> N (Located a) Source # stdArcLength :: Located a -> N (Located a) Source # arcLengthToParam :: N (Located a) -> Located a -> N (Located a) -> N (Located a) Source # stdArcLengthToParam :: Located a -> N (Located a) -> N (Located a) Source #
(InSpace v n a, Fractional n, Parametric a, Sectionable a, Codomain a ~ v) => Sectionable (Located a) Source #
Instance details Defined in Diagrams.Located Methods splitAtParam :: Located a -> N (Located a) -> (Located a, Located a) Source # section :: Located a -> N (Located a) -> N (Located a) -> Located a Source # reverseDomain :: Located a -> Located a Source #
(InSpace v n a, EndValues a, Codomain a ~ v) => EndValues (Located a) Source #
Instance details Defined in Diagrams.Located Methods atStart :: Located a -> Codomain (Located a) (N (Located a)) Source # atEnd :: Located a -> Codomain (Located a) (N (Located a)) Source #
(DomainBounds t, EndValues (Tangent t)) => EndValues (Tangent (Located t)) Source #
Instance details Defined in Diagrams.Tangent Methods atStart :: Tangent (Located t) -> Codomain (Tangent (Located t)) (N (Tangent (Located t))) Source # atEnd :: Tangent (Located t) -> Codomain (Tangent (Located t)) (N (Tangent (Located t))) Source #
DomainBounds a => DomainBounds (Located a) Source #
Instance details Defined in Diagrams.Located Methods domainLower :: Located a -> N (Located a) Source # domainUpper :: Located a -> N (Located a) Source #
(InSpace v n a, Parametric a, Codomain a ~ v) => Parametric (Located a) Source #
Instance details Defined in Diagrams.Located Methods atParam :: Located a -> N (Located a) -> Codomain (Located a) (N (Located a)) Source #
Parametric (Tangent t) => Parametric (Tangent (Located t)) Source #
Instance details Defined in Diagrams.Tangent Methods atParam :: Tangent (Located t) -> N (Tangent (Located t)) -> Codomain (Tangent (Located t)) (N (Tangent (Located t))) Source #
Alignable a => Alignable (Located a) Source #
Instance details Defined in Diagrams.Located Methods alignBy' :: (InSpace v n (Located a), Fractional n, HasOrigin (Located a)) => (v n -> Located a -> Point v n) -> v n -> n -> Located a -> Located a Source # defaultBoundary :: (V (Located a) ~ v, N (Located a) ~ n) => v n -> Located a -> Point v n Source # alignBy :: (InSpace v n (Located a), Fractional n, HasOrigin (Located a)) => v n -> n -> Located a -> Located a Source #
TrailLike t => TrailLike (Located t) Source #	`Located` things are trail-like as long as the underlying type is. The location is taken to be the location of the input located trail.
Instance details Defined in Diagrams.TrailLike Methods trailLike :: Located (Trail (V (Located t)) (N (Located t))) -> Located t Source #
ToPath (Located [Segment Closed v n]) Source #
Instance details Defined in Diagrams.Path Methods toPath :: Located [Segment Closed v n] -> Path (V (Located [Segment Closed v n])) (N (Located [Segment Closed v n])) Source #
ToPath (Located (Segment Closed v n)) Source #
Instance details Defined in Diagrams.Path Methods toPath :: Located (Segment Closed v n) -> Path (V (Located (Segment Closed v n))) (N (Located (Segment Closed v n))) Source #
ToPath (Located (Trail v n)) Source #
Instance details Defined in Diagrams.Path Methods toPath :: Located (Trail v n) -> Path (V (Located (Trail v n))) (N (Located (Trail v n))) Source #
ToPath (Located (Trail' l v n)) Source #
Instance details Defined in Diagrams.Path Methods toPath :: Located (Trail' l v n) -> Path (V (Located (Trail' l v n))) (N (Located (Trail' l v n))) Source #
RealFloat n => HasQuery (Located (Trail V2 n)) Crossings Source #
Instance details Defined in Diagrams.TwoD.Path Methods getQuery :: Located (Trail V2 n) -> Query (V (Located (Trail V2 n))) (N (Located (Trail V2 n))) Crossings Source #
RealFloat n => HasQuery (Located (Trail' l V2 n)) Crossings Source #
Instance details Defined in Diagrams.TwoD.Path Methods getQuery :: Located (Trail' l V2 n) -> Query (V (Located (Trail' l V2 n))) (N (Located (Trail' l V2 n))) Crossings Source #
(LinearMappable a b, N a ~ N b, r ~ Located b) => AffineMappable (Located a) r Source #
Instance details Defined in Diagrams.LinearMap Methods amap :: AffineMap (V (Located a)) (V r) (N r) -> Located a -> r Source #
(LinearMappable a b, r ~ Located b) => LinearMappable (Located a) r Source #
Instance details Defined in Diagrams.LinearMap Methods vmap :: (Vn (Located a) -> Vn r) -> Located a -> r Source #
(Metric v, Metric u, OrderedField n, r ~ Located (Trail u n)) => Deformable (Located (Trail v n)) r Source #
Instance details Defined in Diagrams.Deform Methods deform' :: N (Located (Trail v n)) -> Deformation (V (Located (Trail v n))) (V r) (N (Located (Trail v n))) -> Located (Trail v n) -> r Source # deform :: Deformation (V (Located (Trail v n))) (V r) (N (Located (Trail v n))) -> Located (Trail v n) -> r Source #
Each (Path v n) (Path v' n') (Located (Trail v n)) (Located (Trail v' n')) Source #
Instance details Defined in Diagrams.Path Methods each :: Traversal (Path v n) (Path v' n') (Located (Trail v n)) (Located (Trail v' n')) #
Cons (Path v n) (Path v' n') (Located (Trail v n)) (Located (Trail v' n')) Source #
Instance details Defined in Diagrams.Path Methods _Cons :: Prism (Path v n) (Path v' n') (Located (Trail v n), Path v n) (Located (Trail v' n'), Path v' n') #
Snoc (Path v n) (Path v' n') (Located (Trail v n)) (Located (Trail v' n')) Source #
Instance details Defined in Diagrams.Path Methods _Snoc :: Prism (Path v n) (Path v' n') (Path v n, Located (Trail v n)) (Path v' n', Located (Trail v' n')) #
type Rep (Located a) Source #
Instance details Defined in Diagrams.Located type Rep (Located a) = D1 (MetaData "Located" "Diagrams.Located" "diagrams-lib-1.4.3-8JTlbiKnHul1qsqRgNvXXl" False) (C1 (MetaCons "Loc" PrefixI True) (S1 (MetaSel (Just "loc") NoSourceUnpackedness NoSourceStrictness DecidedLazy) (Rec0 (Point (V a) (N a))) :*: S1 (MetaSel (Just "unLoc") NoSourceUnpackedness NoSourceStrictness DecidedLazy) (Rec0 a)))
type V (Located a) Source #
Instance details Defined in Diagrams.Located type V (Located a) = V a
type N (Located a) Source #
Instance details Defined in Diagrams.Located type N (Located a) = N a
type Codomain (Located a) Source #
Instance details Defined in Diagrams.Located type Codomain (Located a) = Point (Codomain a)

at :: a -> Point (V a) (N a) -> Located a infix 5 Source #

Construct a Located a from a value of type a and a location. at is intended to be used infix, like x `at` origin.

viewLoc :: Located a -> (Point (V a) (N a), a) Source #

Deconstruct a Located a into a location and a value of type a. viewLoc can be especially useful in conjunction with the ViewPatterns extension.

mapLoc :: SameSpace a b => (a -> b) -> Located a -> Located b Source #

Located is not a Functor, since changing the type could change the type of the associated vector space, in which case the associated location would no longer have the right type. mapLoc has an extra constraint specifying that the vector space must stay the same.

(Technically, one can say that for every vector space v, Located is a little-f (endo)functor on the category of types with associated vector space v; but that is not covered by the standard Functor class.)

located :: SameSpace a b => Lens (Located a) (Located b) a b Source #

A lens giving access to the object within a Located wrapper.

_loc :: Lens' (Located a) (Point (V a) (N a)) Source #

Lens onto the location of something Located.