register_shape: Register a Custom Shape

In cograph: Analysis and Visualization of Complex Networks

Register a Custom Shape

Description

Register a new shape that can be used for node rendering.

Usage

register_shape(name, draw_fn)

Arguments

name	Character. Name of the shape.
draw_fn	Function. A function that draws the shape. Should accept parameters: x, y, size, fill, border_color, border_width, ...

Value

Invisible NULL.

Examples

# Register a custom hexagon shape
register_shape("hexagon", function(x, y, size, fill, border_color, border_width, ...) {
  angles <- seq(0, 2 * pi, length.out = 7)
  grid::polygonGrob(
    x = x + size * cos(angles),
    y = y + size * sin(angles),
    gp = grid::gpar(fill = fill, col = border_color, lwd = border_width)
  )
})

cograph documentation built on April 1, 2026, 1:07 a.m.