Grobs with patterns powered by the aRtsy package

grid.pattern_aRtsy() draws patterns powered by the aRtsy package. names_aRtsy() returns character vector of supported types.

grid.pattern_aRtsy(
  x = c(0, 0, 1, 1),
  y = c(1, 0, 0, 1),
  id = 1L,
  ...,
  type = "strokes",
  fill = gp$fill %||% "grey80",
  alpha = gp$alpha %||% NA_real_,
  default.units = "npc",
  name = NULL,
  gp = gpar(),
  draw = TRUE,
  vp = NULL
)

names_aRtsy()

Arguments

x

A numeric vector or unit object specifying x-locations of the pattern boundary.

y

A numeric vector or unit object specifying y-locations of the pattern boundary.

id

A numeric vector used to separate locations in x, y into multiple boundaries. All locations within the same id belong to the same boundary.

...

Currently ignored

type

Name of pattern.

fill

Passed to the underlying aRtsy function's color / colors argument.

alpha

Alpha (between 0 and 1) or NA (default, preserves colors' alpha value).

default.units

A string indicating the default units to use if x or y are only given as numeric vectors.

name

A character identifier.

gp

An object of class "gpar", typically the output from a call to the function gpar. This is basically a list of graphical parameter settings.

draw

A logical value indicating whether graphics output should be produced.

vp

A Grid viewport object (or NULL).

Value

A grid grob object invisibly. If draw is TRUE then also draws to the graphic device as a side effect.

See also

https://koenderks.github.io/aRtsy/ for more information about the aRtsy package.

Examples

if (requireNamespace("aRtsy", quietly = TRUE)) {
  print(names_aRtsy())
}
#>  [1] "segments"    "petri"       "strokes"     "recaman"     "watercolors"
#>  [6] "circlemap"   "forest"      "phyllotaxis" "cobweb"      "mosaic"     
#> [11] "tiles"       "mesh"        "ant"         "squares"     "smoke"      
#> [16] "splits"      "swirls"      "collatz"     "lissajous"   "turmite"    
#> [21] "nebula"      "mandelbrot"  "function"    "chladni"     "flow"       
#> [26] "stripes"     "maze"        "ribbons"     "gemstone"    "planet"     
#> [31] "blacklight"  "flame"       "diamonds"    "polylines"  

# Make take more than 5 seconds on CRAN servers
x_hex <- 0.5 + 0.5 * cos(seq(2 * pi / 4, by = 2 * pi / 6, length.out = 6))
y_hex <- 0.5 + 0.5 * sin(seq(2 * pi / 4, by = 2 * pi / 6, length.out = 6))
if (requireNamespace("aRtsy", quietly = TRUE) &&
    guess_has_R4.1_features("patterns")) {
  grid::grid.newpage()
  grid.pattern_aRtsy(x_hex, y_hex, type = "forest",
                     fill = c("black", "white", "grey"))
}