Diagrams.TwoD.Arc

Two-dimensional arcs, approximated by cubic bezier curves.

Documentation

arc :: (Angle a, PathLike p, V p ~ R2) => a -> a -> p

Given a start angle s and an end angle e, arc s e is the path of a radius one arc counterclockwise between the two angles. The origin of the arc is its center.

arc' :: (Angle a, PathLike p, V p ~ R2) => Double -> a -> a -> p

Given a radus r, a start angle s and an end angle e, arc' r s e is the path of a radius (abs r) arc between the two angles. If a negative radius is given, the arc will be clockwise, otherwise it will be counterclockwise. The origin of the arc is its center.

arcCW :: (Angle a, PathLike p, V p ~ R2) => a -> a -> p

Like arc but clockwise.

arcT :: Angle a => a -> a -> Trail R2

Given a start angle s and an end angle e, arcT s e is the Trail of a radius one arc counterclockwise between the two angles.

bezierFromSweep :: Rad -> [Segment R2]

bezierFromSweep s constructs a series of Cubic segments that start in the positive y direction and sweep counter clockwise through s radians. If s is negative, it will start in the negative y direction and sweep clockwise. When s is less than 0.0001 the empty list results. If the sweep is greater than tau then it is truncated to tau.

wedge :: (Angle a, PathLike p, V p ~ R2) => Double -> a -> a -> p

Create a circular wedge of the given radius, beginning at the first angle and extending counterclockwise to the second.