FieldTrip-0.2.4: Functional 3D Source code Contents Index

Graphics.FieldTrip.Geometry2 Stability experimental Maintainer conal@conal.net, andygill@ku.edu

Contents Text Geometry2 filters

Description

2D geometry

Synopsis

data Geometry2 renderer2 :: Renderer -> Geometry2 renderWith2 :: GContext -> Geometry2 -> IO () render2 :: Geometry2 -> IO () ubox2 :: Geometry2 box2 :: (Real s, Floating s, MatrixComponent s) => s -> s -> Geometry2 approx2 :: (ErrorBound -> Geometry2) -> Geometry2 udisk :: Geometry2 polygon :: VertexComponent s => [Vertex2 s] -> Geometry2 regularPolygon :: Int -> Geometry2 diskWedge :: R -> Geometry2 regularPolygonWedge :: forall s. (Ord s, Floating s, VertexComponent s) => s -> Int -> Geometry2 utext :: String -> Geometry2 utextWidth :: String -> Double utextBaseline :: Double type Filter2 = Geometry2 -> Geometry2 move2 :: (MatrixComponent s, Real s, Floating s) => s -> s -> Filter2 move2X :: (MatrixComponent s, Real s, Floating s) => s -> Filter2 move2Y :: (MatrixComponent s, Real s, Floating s) => s -> Filter2 andFlip2 :: Filter2

Documentation

data Geometry2 Source

2D geometry In the Monoid instance, mempty is completely invisible (aka transparent or empty), and a mappend b places a on top of b. Instances Monoid Geometry2 (Floating s, Real s, MatrixComponent s) => Transform (Transform2 s) Geometry2

renderer2 :: Renderer -> Geometry2 Source

Make a geometry from a rendering action. The action must leave graphics state as it found it.

renderWith2 :: GContext -> Geometry2 -> IO () Source

Render the geometry, given a graphics context. Leaves graphics state unchanged.

render2 :: Geometry2 -> IO () Source

Render the geometry with default graphics context. See also renderWith2.

ubox2 :: Geometry2 Source

Box2 of unit width and height. See also 'box2.

box2 :: (Real s, Floating s, MatrixComponent s) => s -> s -> Geometry2 Source

Box2 of given width and height. See also 'ubox2.

approx2 :: (ErrorBound -> Geometry2) -> Geometry2 Source

Approximate one geometry by another, given an error bound

udisk :: Geometry2 Source

The unit disk, approximated as regular n-gons

polygon :: VertexComponent s => [Vertex2 s] -> Geometry2 Source

A polygon

regularPolygon :: Int -> Geometry2 Source

Regular polygon

diskWedge :: R -> Geometry2 Source

Portion of a disk

regularPolygonWedge :: forall s. (Ord s, Floating s, VertexComponent s) => s -> Int -> Geometry2 Source

Regular polygon wedge. Oops! only works for frac <= 1/2, since otherwise the polygon is non-convex.

Text

utext :: String -> Geometry2 Source

The passed string of text centered at the origin with height 1.0

utextWidth :: String -> Double Source

The width of the geometry of utext of that string.

utextBaseline :: Double Source

The height of the baseline of geometry created by utext. This can be used for underlining, for example.

Geometry2 filters

type Filter2 = Geometry2 -> Geometry2 Source

Geometry2 filter

move2 :: (MatrixComponent s, Real s, Floating s) => s -> s -> Filter2 Source

Simplified interface to translate2

move2X :: (MatrixComponent s, Real s, Floating s) => s -> Filter2 Source

move2Y :: (MatrixComponent s, Real s, Floating s) => s -> Filter2 Source

Specializations of move2

andFlip2 :: Filter2 Source

A geometry plus its a rotated-by-pi version.

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