if (FALSE) { # interactive() || isTRUE(as.logical(Sys.getenv("IN_PKGDOWN")))
# Flip a mesh
sphere_mesh(position=c(-1,0,0)) |>
add_shape(flip_orientation_mesh(sphere_mesh(position=c(1,0,0)))) |>
rasterize_scene(debug="normals",fov=30)
}
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