add_glassbrain: Add glass brain to ggseg3d plot

In ggseg3d: Interactive 3D Brain Atlas Visualization

Add glass brain to ggseg3d plot

Description

Adds a translucent brain surface to a ggseg3d plot for anatomical reference. Particularly useful for subcortical and tract visualizations where spatial context helps interpretation. Works with both htmlwidget ('ggseg3d') and rgl ('ggsegray') objects.

Usage

add_glassbrain(
  p,
  hemisphere = c("left", "right"),
  surface = "pial",
  colour = "#CCCCCC",
  opacity = 0.3,
  brain_meshes = NULL
)

Arguments

p	A 'ggseg3d' widget or 'ggsegray' rgl object.
hemisphere	Character vector. Hemispheres to add: "left", "right", or both.
surface	Character. Surface type: "inflated", "white", or "pial".
colour	Character. Colour for the glass brain surface (hex or named).
opacity	Numeric. Transparency of the glass brain (0-1).
brain_meshes	Optional user-supplied brain meshes. See [ggseg.formats::get_brain_mesh()] for format details.

Value

The input object (modified), for piping.

Examples

## Not run: 
ggseg3d(atlas = aseg()) |>
  add_glassbrain("left", opacity = 0.2)

ggsegray(atlas = aseg()) |>
  add_glassbrain(opacity = 0.15) |>
  pan_camera("right lateral")

## End(Not run)

ggseg3d documentation built on Feb. 21, 2026, 1:06 a.m.