Wumpus.Basic.Shapes.Coordinate

A Coordinate is operationally like a shape but it can only be drawn as a dot or a cross and it only supports CenterAnchor.

Coordinates support affine transformations, however transfomations only displace a coordinate's origin they do not change how it is drawn (one cannot elongate the drawing of a coordinate with a scale). This is why coordinates are not Shapes, though one major use of coordinates is to illustrate anchor points on Shapes.

Documentation

data CoordinateAnchor u

Coordinate

Instances

Eq u => Eq (CoordinateAnchor u)

Ord u => Ord (CoordinateAnchor u)

Show u => Show (CoordinateAnchor u)

(Real u, Floating u) => CenterAnchor (CoordinateAnchor u)

type DCoordinateAnchor = CoordinateAnchor Double

data Coordinate u

Instances

Eq u => Eq (Coordinate u)

Ord u => Ord (Coordinate u)

Show u => Show (Coordinate u)

(Real u, Floating u) => Rotate (Coordinate u)

(Real u, Floating u) => RotateAbout (Coordinate u)

Num u => Scale (Coordinate u)

Num u => Translate (Coordinate u)

type DCoordinate = Coordinate Double

coordinate :: Num u => LocCoordinate u

coordinateDot :: (Real u, Floating u, FromPtSize u) => Coordinate u -> Image u (CoordinateAnchor u)

coordinateX :: (Real u, Floating u, FromPtSize u) => Coordinate u -> Image u (CoordinateAnchor u)

Note - the x is drawn regardless of any scaling or rotation.