diagrams-lib-1.3: Embedded domain-specific language for declarative graphics

Diagrams.TwoD.Combinators

Description

Diagram combinators specialized to two dimensions. For more general combinators, see Diagrams.Combinators.

Synopsis

# Binary combinators

(===) :: (InSpace V2 n a, Num n, Juxtaposable a, Semigroup a) => a -> a -> a infixl 6 Source

Place two diagrams (or other objects) vertically adjacent to one another, with the first diagram above the second. Since Haskell ignores whitespace in expressions, one can thus write

```      c
===
d
```

to place `c` above `d`. The local origin of the resulting combined diagram is the same as the local origin of the first. `(===)` is associative and has `mempty` as an identity. See the documentation of `beside` for more information.

(|||) :: (InSpace V2 n a, Num n, Juxtaposable a, Semigroup a) => a -> a -> a infixl 6 Source

Place two diagrams (or other juxtaposable objects) horizontally adjacent to one another, with the first diagram to the left of the second. The local origin of the resulting combined diagram is the same as the local origin of the first. `(|||)` is associative and has `mempty` as an identity. See the documentation of `beside` for more information.

# n-ary combinators

hcat :: (InSpace V2 n a, Floating n, Juxtaposable a, HasOrigin a, Monoid' a) => [a] -> a Source

Lay out a list of juxtaposable objects in a row from left to right, so that their local origins lie along a single horizontal line, with successive envelopes tangent to one another.

• For more control over the spacing, see `hcat'`.
• To align the diagrams vertically (or otherwise), use alignment combinators (such as `alignT` or `alignB`) from Diagrams.TwoD.Align before applying `hcat`.
• For non-axis-aligned layout, see `cat`.

hcat' :: (InSpace V2 n a, Floating n, Juxtaposable a, HasOrigin a, Monoid' a) => CatOpts n -> [a] -> a Source

A variant of `hcat` taking an extra `CatOpts` record to control the spacing. See the `cat'` documentation for a description of the possibilities. For the common case of setting just a separation amount, see `hsep`.

hsep :: (InSpace V2 n a, Floating n, Juxtaposable a, HasOrigin a, Monoid' a) => n -> [a] -> a Source

A convenient synonym for horizontal concatenation with separation: `hsep s === hcat' (with & sep .~ s)`.

vcat :: (InSpace V2 n a, Floating n, Juxtaposable a, HasOrigin a, Monoid' a) => [a] -> a Source

Lay out a list of juxtaposable objects in a column from top to bottom, so that their local origins lie along a single vertical line, with successive envelopes tangent to one another.

• For more control over the spacing, see `vcat'`.
• To align the diagrams horizontally (or otherwise), use alignment combinators (such as `alignL` or `alignR`) from Diagrams.TwoD.Align before applying `vcat`.
• For non-axis-aligned layout, see `cat`.

vcat' :: (InSpace V2 n a, Floating n, Juxtaposable a, HasOrigin a, Monoid' a) => CatOpts n -> [a] -> a Source

A variant of `vcat` taking an extra `CatOpts` record to control the spacing. See the `cat'` documentation for a description of the possibilities. For the common case of setting just a separation amount, see `vsep`.

vsep :: (InSpace V2 n a, Floating n, Juxtaposable a, HasOrigin a, Monoid' a) => n -> [a] -> a Source

A convenient synonym for vertical concatenation with separation: `vsep s === vcat' (with & sep .~ s)`.

# Spacing/envelopes

strutR2 :: (RealFloat n, Monoid' m) => V2 n -> QDiagram b V2 n m Source

`strutR2 v` is a two-dimensional diagram which produces no output, but with respect to alignment, envelope, and trace acts like a 1-dimensional segment oriented along the vector `v`, with local origin at its center. If you don't care about the trace then there's no difference between `strutR2` and the more general `strut`.

strutX :: (Metric v, R1 v, OrderedField n, Monoid' m) => n -> QDiagram b v n m Source

`strutX w` is an empty diagram with width `w`, height 0, and a centered local origin. Note that `strutX (-w)` behaves the same as `strutX w`.

strutY :: (Metric v, R2 v, OrderedField n, Monoid' m) => n -> QDiagram b v n m Source

`strutY h` is an empty diagram with height `h`, width 0, and a centered local origin. Note that `strutY (-h)` behaves the same as `strutY h`.

padX :: (Metric v, R2 v, OrderedField n, Monoid' m) => n -> QDiagram b v n m -> QDiagram b v n m Source

`padX s` "pads" a diagram in the x-direction, expanding its envelope horizontally by a factor of `s` (factors between 0 and 1 can be used to shrink the envelope). Note that the envelope will expand with respect to the local origin, so if the origin is not centered horizontally the padding may appear "uneven". If this is not desired, the origin can be centered (using `centerX`) before applying `padX`.

padY :: (Metric v, R2 v, Monoid' m, OrderedField n) => n -> QDiagram b v n m -> QDiagram b v n m Source

`padY s` "pads" a diagram in the y-direction, expanding its envelope vertically by a factor of `s` (factors between 0 and 1 can be used to shrink the envelope). Note that the envelope will expand with respect to the local origin, so if the origin is not centered vertically the padding may appear "uneven". If this is not desired, the origin can be centered (using `centerY`) before applying `padY`.

extrudeLeft :: (OrderedField n, Monoid' m) => n -> QDiagram b V2 n m -> QDiagram b V2 n m Source

`extrudeLeft s` "extrudes" a diagram in the negative x-direction, offsetting its envelope by the provided distance. When ` s < 0 `, the envelope is inset instead.

See the documentation for `extrudeEnvelope` for more information.

extrudeRight :: (OrderedField n, Monoid' m) => n -> QDiagram b V2 n m -> QDiagram b V2 n m Source

`extrudeRight s` "extrudes" a diagram in the positive x-direction, offsetting its envelope by the provided distance. When ` s < 0 `, the envelope is inset instead.

See the documentation for `extrudeEnvelope` for more information.

extrudeBottom :: (OrderedField n, Monoid' m) => n -> QDiagram b V2 n m -> QDiagram b V2 n m Source

`extrudeBottom s` "extrudes" a diagram in the negative y-direction, offsetting its envelope by the provided distance. When ` s < 0 `, the envelope is inset instead.

See the documentation for `extrudeEnvelope` for more information.

extrudeTop :: (OrderedField n, Monoid' m) => n -> QDiagram b V2 n m -> QDiagram b V2 n m Source

`extrudeTop s` "extrudes" a diagram in the positive y-direction, offsetting its envelope by the provided distance. When ` s < 0 `, the envelope is inset instead.

See the documentation for `extrudeEnvelope` for more information.

rectEnvelope :: forall b n m. (OrderedField n, Monoid' m) => Point V2 n -> V2 n -> QDiagram b V2 n m -> QDiagram b V2 n m Source

`rectEnvelope p v` sets the envelope of a diagram to a rectangle whose lower-left corner is at `p` and whose upper-right corner is at ```p .+^ v```. Useful for selecting the rectangular portion of a diagram which should actually be "viewed" in the final render, if you don't want to see the entire diagram.

boundingRect :: (InSpace V2 n a, SameSpace a t, Enveloped t, Transformable t, TrailLike t, Monoid t, Enveloped a) => a -> t Source

Construct a bounding rectangle for an enveloped object, that is, the smallest axis-aligned rectangle which encloses the object.

bg :: (TypeableFloat n, Renderable (Path V2 n) b) => Colour Double -> QDiagram b V2 n Any -> QDiagram b V2 n Any Source

"Set the background color" of a diagram. That is, place a diagram atop a bounding rectangle of the given color.

bgFrame :: (TypeableFloat n, Renderable (Path V2 n) b) => n -> Colour Double -> QDiagram b V2 n Any -> QDiagram b V2 n Any Source

Similar to `bg` but makes the colored background rectangle larger than the diagram. The first parameter is used to set how far the background extends beyond the diagram.