position_hemisphere: Position hemisphere vertices for anatomical display
Description
Offsets hemisphere vertices so left is at negative x and right at positive x,
with medial surfaces adjacent at the midline. Used by [add_glassbrain()]
for anatomical context.
Usage
position_hemisphere(vertices, hemisphere)
Value
data.frame with adjusted x coordinates
Arguments
- vertices
data.frame with x, y, z columns
- hemisphere
"left" or "right"