Drag & Drop Objects to 3D Viewer

template <- threeBrain::merge_brain(
  template_subject = "cvs_avg35_inMNI152",
  template_surface_types = c("pial", "inflated")
)
template$plot(
  side_display = FALSE,
  controllers = list(
    "Left Opacity" = 0.1,
    "Right Opacity" = 0.1
  )
)