Graphics.PS.Path

Path type and functions.

Documentation

data Path

Path data type,in cartesian space.

Constructors

MoveTo (Pt Double)

LineTo (Pt Double)

CurveTo (Pt Double) (Pt Double) (Pt Double)

ClosePath (Pt Double)

Text Font [Glyph]

PTransform (Matrix Double) Path

Join Path Path

Instances

Eq Path

Methods

(==) :: Path -> Path -> Bool

(/=) :: Path -> Path -> Bool

Show Path

Methods

showsPrec :: Int -> Path -> ShowS

show :: Path -> String

showList :: [Path] -> ShowS

Monoid Path

Methods

mempty :: Path

mappend :: Path -> Path -> Path

mconcat :: [Path] -> Path

Transformable Path

Methods

mtransform :: Matrix Double -> Path -> Path

(+++) :: Path -> Path -> Path

Infix notation for Join.

combine :: [Path] -> Path

Left fold of Join.

line :: [Pt Double] -> Path

Line segments though list of Pt.

polygon :: [Pt Double] -> Path

Variant of line connecting the last Pt to the first.

rectangle :: Pt Double -> Double -> Double -> Path

Rectangle with lower left at Pt and of specified width and height. Polygon is ordered anticlockwise from lower left.

type Arc_Seg n = (Pt n, Pt n, Pt n, Pt n)

An arc segment, as starting point and values for the curveto operator.

data Arc n

An arc, given as either one or two segments.

Constructors

Arc1 (Arc_Seg n)

Arc2 (Arc_Seg n) (Arc_Seg n)

arcp :: Pt Double -> Double -> Double -> Double -> Arc_Seg Double

Arc segment, (x,y) = center,r = radius,a = start angle,b = end angle.

arca :: Pt Double -> Double -> Double -> Double -> Arc Double

Arc, c = center,r = radius,a = start angle,b = end angle

If the arc angle is greater than pi the arc must be drawn in two segments.

arc_to_path :: Arc Double -> Path

Path of Arc.

arca_udir :: Pt Double -> Double -> Double -> Double -> Arc Double

Variant of arca allowing b to be less than a.

arcNegative_udir :: Pt Double -> Double -> Double -> Double -> Arc Double

arca_udir with a and b reversed.

arc :: Pt Double -> Double -> Double -> Double -> Path

Arc given by a central point,a radius,and start and end angles.

arcNegative :: Pt Double -> Double -> Double -> Double -> Path

Negative arc.

type Annular n = (Pt n, Pt n, Arc n, Pt n, Arc n)

annular_f :: Pt Double -> Double -> Double -> Double -> Double -> Annular Double

(x,y) = center,ir = inner radius,xr = outer radius,sa = start angle,a = angle,ea = end angle

annular :: Pt Double -> Double -> Double -> Double -> Double -> Path

Annular segment.

flatten_f :: Matrix Double -> Path -> Path

flatten :: Path -> Path

Apply any transformations at path. The resulting path will not have any PTransform nodes.

renderLines :: [Ln Double] -> Path

Render each (p1,p2) as a distinct line.

renderLines_jn :: [Ln Double] -> Path

Collapse line sequences into a single line.