Graphics.Diagrams

Diagrams user API

Points

type Point = (Double, Double)

Point type as defined in the diagrams package

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

Scalar multiplication.

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

Elementwise addition, subtraction and multiplication for Points.

Colors

data Color

colors

Instances

Eq Color

Data Color

Ord Color

Show Color

Typeable Color

NFData Color

color :: String -> Color

named color

rgb :: Double -> Double -> Double -> Color

RGB color (components are between 0 and 1)

red, yellow, gray, white, black, blue, green :: Color

Diagrams

data Diagram

Diagram data type

Instances

Data Diagram

Typeable Diagram

Primitives

empty :: Diagram

empty diagram

rect :: Double -> Double -> Diagram

rectangle given with width and height

rectangle :: Point -> Point -> Diagram

rectangle given with two opposite corners

circle :: Double -> Diagram

circle with radius

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

line segment

polygon, polyline :: [Point] -> Diagram

Texts

textFrom :: String -> Point -> Diagram

text; beginning of text is fixed

textTo :: String -> Point -> Diagram

text; end of text is fixed

textAt :: String -> Point -> Diagram

text; middle of text is fixed

Transformations

move :: Diagram -> Point -> Diagram

rotate :: Diagram -> Double -> Diagram

rotate (degree)

scale :: Diagram -> Double -> Diagram

scale differently at x and y axes

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

clip :: Point -> Point -> Diagram -> Diagram

clip a rectangle region (give lower-left and upper-right corners)

Styles

fill :: Diagram -> Color -> Diagram

fill with color

stroke :: Diagram -> Color -> Diagram

set stroke color

strokeWidth :: Diagram -> Double -> Diagram

set stroke width

fontFamily :: Diagram -> String -> Diagram

set font family

link :: Diagram -> String -> Diagram

add an html link

Combining diagrams

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

overlay; the second diagram is over the first one

union :: [Diagram] -> Diagram

overlay generalized to several diagrams

pack :: Diagram -> (Diagram -> Diagram) -> Diagram

pack a diagram; (pack d f) is the more efficient version of (let v=d in f v).