Diagrams.TwoD.Arrowheads

Standard arrowheads and tails. Each arrowhead or tail is designed to be drawn filled, with a line width of 0, and is normalized to fit inside a circle of diameter 1.

Arrowheads

Standard arrowheads

tri :: ArrowHT

dart :: ArrowHT

spike :: ArrowHT

thorn :: ArrowHT

missile :: ArrowHT

noHead :: ArrowHT

Configurable arrowheads

Creates arrowheads of the same shape as the standard heads but where the angle parameter is used to specify the angle to the top left point of the arrowhead.

arrowheadTriangle :: Angle -> ArrowHT

Isoceles triangle style. The above example specifies an angle of `2/5 Turn`.

arrowheadDart :: Angle -> ArrowHT

Isoceles triangle with linear concave base. Inkscape type 1 - dart like.

arrowheadSpike :: Angle -> ArrowHT

Isoceles triangle with curved concave base. Inkscape type 2.

arrowheadThorn :: Angle -> Double -> ArrowHT

Curved sides, linear concave base. Illustrator CS5 #3

arrowheadMissile :: Angle -> ArrowHT

Arrow tails

Standard arrow tails

tri' :: ArrowHT

dart' :: ArrowHT

spike' :: ArrowHT

thorn' :: ArrowHT

missile' :: ArrowHT

noTail :: ArrowHT

quill :: ArrowHT

block :: ArrowHT

Configurable arrow tails

arrowtailQuill :: Angle -> ArrowHT

The angle is where the top left corner intersects the circle.

arrowtailBlock :: Angle -> ArrowHT

Internals

type ArrowHT = Double -> Double -> (Path R2, Path R2)