Highlight requested points (if any), but apply given view rotation before doing so.
handle.rglactions.highlight.points(
rglactions,
angle_rad,
x,
y,
z,
hemi = "both"
)
character string, one of 'lh', 'rh' or 'both'. If lh or rh, plots only points from that hemi (if hemi info is available for the points).