DrawDiagrams

Documentation

data Diagram

Diagram is the core data type which describes a diagram. Diagrams may be constructed, transformed, combined, and ultimately rendered as an image.

circle :: Double -> Diagram

rect :: Double -> Double -> Diagram

rect w h is a rectangle of width w and height h.

(>-<) :: Point -> Point -> Diagram

move :: Diagram -> (Double, Double) -> Diagram

rotate :: Diagram -> Double -> Diagram

scale :: Diagram -> Double -> Diagram

(<|>) :: Diagram -> Diagram -> Diagram

union :: [Diagram] -> Diagram

Create a Diagram as a union of subdiagrams which will not be repositioned. If the subdiagrams overlap, they will appear with the first Diagram on the bottom, and the last on top.

polygon :: [Point] -> Diagram

polyline :: [Point] -> Diagram

strokeWidth :: Diagram -> Double -> Diagram

fill :: Color c => Diagram -> c -> Diagram

stroke :: Color c => Diagram -> c -> Diagram

class Color c

The Color type class encompasses color representations which can be used by the Diagrams library; that is, every function in the Diagrams library which expects a color can take any type which is an instance of Color. Instances are provided for both the Colour and AlphaColour types from the Data.Colour library.

Instances

Color SomeColor

(Floating a, Real a) => Color (Colour a)

(Floating a, Real a) => Color (AlphaColour a)

rgb :: Fractional a => a -> a -> a -> Colour a

Constructs a Colour from RGB values using the linear RGB colour with the same gamut as sRGB.

module Data.Colour.Names

type Point = (Double, Double)

Basic 2D points/vectors.

(.+.) :: Point -> Point -> Point

(.-.) :: Point -> Point -> Point

Elementwise addition, subtraction and multiplication for Points.

(.*.) :: Point -> Point -> Point

(*.) :: Double -> Point -> Point

Scalar multiplication.

scaleY :: Double -> Diagram -> Diagram

Scale a diagram along the y-axis only. scaleY s is equivalent to stretch 1 s.

draw :: Diagram -> IO ()

drawOn :: Int -> Int -> Diagram -> IO ()