Project Surface Vertices to a Canonical 2D View

Public wrapper for the core surface-view projection used by plot_brain().

Usage

project_surface_view(
  verts,
  view = c("lateral", "medial", "dorsal", "ventral"),
  hemi = c("left", "right")
)

Arguments

verts

Numeric matrix (\(N \times 3\)) of vertex coordinates.

view

Character scalar: one of "lateral", "medial", "dorsal", "ventral".

hemi

Character scalar: "left" or "right".

Value

A list with elements:

xy

Numeric matrix (\(N \times 2\)) of projected coordinates.

view_dir

Numeric length-3 view direction vector used for backface culling.

Examples

project_surface_view(rbind(c(0, 0, 0), c(1, 2, 3)),
  view = "lateral", hemi = "left"
)
#> $xy
#>      [,1] [,2]
#> [1,]    0    0
#> [2,]   -2    3
#> 
#> $view_dir
#> [1] -1  0  0
#>