gen_leaf_parameters: Generate bezier coordinates of a leaf

In urswilke/ggbenjamini: Generate ficus benjamina leaf shapes with bezier curves

Generate bezier coordinates of a leaf

Description

Except the start point coordinates of the leaf origin x0 & y0 (arbitrarily set to 10 and 40) all coordinates are relative to this origin. Most of the parameters are random generated, except for some of them (e.g., to close polygons, or to keep the stalk and the mid vein on the same line).

Usage

gen_leaf_parameters(
  x0 = 10,
  y0 = 40,
  dx10 = sample(8:12, 1),
  dy10 = 0,
  dx21 = sample(12:20, 1),
  dy21 = sample(-4:-10, 1),
  dx32 = sample(10:18, 1),
  dy32 = stats::runif(1, 0.92 * (-dy21 - 1), 0.95 * (-dy21 - 1)),
  dx43 = sample(4:6, 1),
  dy43 = y0 + dy10 + dy21 + dy32,
  sx0 = stats::runif(1, 0, 0.1),
  sx1 = sample(1:3, 1),
  sx2 = sample(4:6, 1),
  sx3 = sample(2:4, 1),
  sx4 = stats::runif(1, 0, 0.2),
  sy0 = stats::runif(1, 0.5, 1),
  sy1 = sample(-4:-6, 1),
  sy2 = stats::runif(1, -0.5, 0.5),
  sy3 = stats::runif(1, 0.5, 1.5),
  sy4 = stats::runif(1, 0.2, 0.7),
  smx1 = sample(-5:-15, 1),
  smx2 = sample(-5:-15, 1),
  smy1 = stats::runif(1, -1, 1),
  smy2 = stats::runif(1, -1, 1)
)

Arguments

x0, y0	coordinates of the leaf origin
dx10, dy10, dx21, dy21, dx32, dy32, dx43, dy43	coordinates of the other bezier start & end points
sx0, sx1, sx2, sx3, sx4	x coordinates of the control points
sy0, sy1, sy2, sy3, sy4	y coordinates of the control points
smx1, smx2, smy1, smy2	x & y coordinates of the mid vein control points

Value

named list of all parameters

Examples

gen_leaf_parameters()

urswilke/ggbenjamini documentation built on Sept. 13, 2023, 10:46 p.m.