-- Hoogle documentation, generated by Haddock
-- See Hoogle, http://www.haskell.org/hoogle/


-- | Haskell Postscript
--   
--   Haskell library partially implementing the postscript drawing model.
@package hps
@version 0.2

module Graphics.PS.Matrix

-- | Transformation matrix data type.
data Matrix
Matrix :: R -> R -> R -> R -> R -> R -> Matrix

-- | The identity matrix.
identity :: M

-- | A translation matrix with independent x and y offsets.
translation :: R -> R -> M

-- | A scaling matrix with independent x and y scalars.
scaling :: R -> R -> M

-- | A rotation matrix through the indicated angle (in radians).
rotation :: R -> M
instance Eq MIx
instance Show MIx
instance Enum MIx
instance Eq Matrix
instance Show Matrix
instance Num Matrix

module Graphics.PS.Unit

-- | Convert degrees to radians.
radians :: Floating a => a -> a

-- | Convert millimeters to PS points.
mm_pt :: Floating a => a -> a

module Graphics.PS.Paper

-- | Paper size data type.
data Paper
Paper :: Int -> Int -> Paper
width :: Paper -> Int
height :: Paper -> Int

-- | Swap width and height.
landscape :: Paper -> Paper

-- | A div variant that rounds rather than truncates.
divRound :: Int -> Int -> Int

-- | ISO size downscaling.
iso_down_scale :: Paper -> Paper

-- | ISO A sizes in millimeters.
a1 :: Paper
a2 :: Paper
a3 :: Paper
a4 :: Paper
a5 :: Paper
a6 :: Paper
a7 :: Paper
a8 :: Paper
a9 :: Paper
a10 :: Paper
a0 :: Paper

-- | ISO B sizes in millimeters.
b1 :: Paper
b2 :: Paper
b3 :: Paper
b4 :: Paper
b5 :: Paper
b6 :: Paper
b7 :: Paper
b8 :: Paper
b9 :: Paper
b10 :: Paper
b0 :: Paper

-- | ISO C sizes in millimeters.
c1 :: Paper
c2 :: Paper
c3 :: Paper
c4 :: Paper
c5 :: Paper
c6 :: Paper
c7 :: Paper
c8 :: Paper
c9 :: Paper
c10 :: Paper
c0 :: Paper

-- | US Letter size in millimeters.
usLetter :: Paper
instance Eq Paper
instance Show Paper

module Graphics.PS.GS
data GS
GS :: Color -> LineWidth -> LineCap -> LineJoin -> ([Int], Int) -> Double -> GS
data LineCap
ButtCap :: LineCap
RoundCap :: LineCap
ProjectingSquareCap :: LineCap
data LineJoin
MiterJoin :: LineJoin
RoundJoin :: LineJoin
BevelJoin :: LineJoin
data Color
RGB :: Double -> Double -> Double -> Color

-- | Default GS of indicated color.
defaultGS :: Color -> GS

-- | Default GS of indicated shade of grey.
greyGS :: Double -> GS
instance Eq GS
instance Show GS
instance Eq Color
instance Show Color
instance Eq LineJoin
instance Show LineJoin
instance Enum LineJoin
instance Eq LineCap
instance Show LineCap
instance Enum LineCap

module Graphics.PS.Font

-- | Font data type.
data Font
Font :: String -> Double -> Font
fontName :: Font -> String
fontSize :: Font -> Double
instance Eq Font
instance Show Font

module Graphics.PS.Glyph

-- | Character data type.
type Glyph = Char

module Graphics.PS.Pt

-- | Point data type, component values are real.
data Pt
Pt :: Double -> Double -> Pt

-- | Convert from polar to rectangular co-ordinates.
polarToRectangular :: Pt -> Pt
ptMin :: Pt -> Pt -> Pt
ptMax :: Pt -> Pt -> Pt
ptXYs :: [Pt] -> [Double]

-- | Origin, ie. (Pt 0 0).
origin :: Pt

-- | Apply a transformation matrix to a point.
ptTransform :: Matrix -> Pt -> Pt
instance Eq Pt
instance Show Pt
instance Ord Pt
instance Num Pt

module Graphics.PS.Bezier

-- | Four-point bezier curve interpolation. The index (mu) is in the range
--   zero to one.
bezier4 :: Pt -> Pt -> Pt -> Pt -> Double -> Pt

module Graphics.PS.Path

-- | Path data type, in cartesian space.
data Path
MoveTo :: Pt -> Path
LineTo :: Pt -> Path
CurveTo :: Pt -> Pt -> Pt -> Path
Text :: Font -> [Glyph] -> Path
PTransform :: Matrix -> Path -> Path
Join :: Path -> Path -> Path

-- | Infix notation for path join.
(+++) :: Path -> Path -> Path

-- | Line segments though list of points.
line :: [Pt] -> Path

-- | Line variant connecting last point to first point.
polygon :: [Pt] -> Path

-- | Rectangle of specified dimensions anticlockwise from lower left.
rectangle :: Pt -> Double -> Double -> Path

-- | Arc given by a central point, a radius, and start and end angles.
arc :: Pt -> Double -> Double -> Double -> Path

-- | Negative arc.
arcNegative :: Pt -> Double -> Double -> Double -> Path

-- | Annular segment.
annular :: Pt -> Double -> Double -> Double -> Double -> Path

-- | Apply any transformations at path. The resulting path will not have
--   any transformation nodes.
flatten :: Path -> Path
instance Eq Path
instance Show Path

module Graphics.PS.Image

-- | Image data type.
data Image
Stroke :: GS -> Path -> Image
Fill :: GS -> Path -> Image
ITransform :: Matrix -> Image -> Image
Over :: Image -> Image -> Image
Empty :: Image

-- | Layer one image over another.
over :: Image -> Image -> Image
instance Eq Image
instance Show Image

module Graphics.PS.Statistics

-- | Path statistics data type.
data Statistics
Statistics :: Integer -> Integer -> Integer -> Integer -> Integer -> Statistics
nMoveTo :: Statistics -> Integer
nLineTo :: Statistics -> Integer
nCurveTo :: Statistics -> Integer
nGlyph :: Statistics -> Integer
nTransform :: Statistics -> Integer

-- | Determine number of path components of each type.
pathStatistics :: Path -> Statistics

module Graphics.PS.Transform
translate :: Transformable a => Double -> Double -> a -> a
scale :: Transformable a => Double -> Double -> a -> a
rotate :: Transformable a => Double -> a -> a
instance Transformable Pt
instance Transformable Path
instance Transformable Image

module Graphics.PS.Query

-- | Locate the starting point of the path.
startPt :: Path -> Maybe Pt

-- | Locate the end point of the path.
endPt :: Path -> Maybe Pt

-- | Ensure path begins with a MoveTo.
mkValid :: Path -> Path

-- | Approximate curves as straight lines.
approx :: Double -> Path -> Path

-- | Add a LineTo the start point of path.
close :: Path -> Path

module Graphics.PS.PS

-- | Write a postscript file. The list of images are written one per page.
ps :: String -> Paper -> [Image] -> IO ()

module Graphics.PS