diagrams-lib-0.1.1: Embedded domain-specific language for declarative graphics

Maintainer diagrams-discuss@googlegroups.com

Diagrams.TwoD.Align

Description

Alignment combinators specialized for two dimensions. See Diagrams.Align for more general alignment combinators.

The basic idea is that alignment is achieved by moving diagrams' local origins relative to their bounding regions. For example, to align several diagrams along their tops, we first move their local origins to the upper edge of their bounding regions (using e.g. `map alignTop`), and then put them together with their local origins along a horizontal line (using e.g. `hcat` from Diagrams.TwoD.Combinators).

Synopsis

# Absolute alignment

alignL :: (HasOrigin a, Boundable a, V a ~ R2) => a -> aSource

Align along the left edge, i.e. translate the diagram in a horizontal direction so that the local origin is on the left edge of the bounding region.

alignR :: (HasOrigin a, Boundable a, V a ~ R2) => a -> aSource

Align along the right edge.

alignT :: (HasOrigin a, Boundable a, V a ~ R2) => a -> aSource

Align along the top edge.

alignB :: (HasOrigin a, Boundable a, V a ~ R2) => a -> aSource

Align along the bottom edge.

alignTL :: (HasOrigin a, Boundable a, V a ~ R2) => a -> aSource

alignTR :: (HasOrigin a, Boundable a, V a ~ R2) => a -> aSource

alignBL :: (HasOrigin a, Boundable a, V a ~ R2) => a -> aSource

alignBR :: (HasOrigin a, Boundable a, V a ~ R2) => a -> aSource

# Relative alignment

alignX :: (HasOrigin a, Boundable a, V a ~ R2) => Rational -> a -> aSource

`alignX` moves the local origin horizontally as follows:

• `alignX (-1)` moves the local origin to the left edge of the bounding region;
• `align 1` moves the local origin to the right edge;
• any other argument interpolates linearly between these. For example, `alignX 0` centers, `alignX 2` moves the origin one "radius" to the right of the right edge, and so on.

alignY :: (HasOrigin a, Boundable a, V a ~ R2) => Rational -> a -> aSource

Like `alignX`, but moving the local origin vertically, with an argument of `1` corresponding to the top edge and `(-1)` corresponding to the bottom edge.

# Centering

centerX :: (HasOrigin a, Boundable a, V a ~ R2) => a -> aSource

Center the local origin along the X-axis.

centerY :: (HasOrigin a, Boundable a, V a ~ R2) => a -> aSource

Center the local origin along the Y-axis.

centerXY :: (HasOrigin a, Boundable a, V a ~ R2) => a -> aSource

Center along both the X- and Y-axes.