This image was acquired from
flickr. It was marked as Public Domain or CC0 and is free to use. To verify, go to the source and check the information there.
Keywords from Image Description:
mathematica cg parametricplotd texture torus program code algorithm geometric sculpture geometricsculpture shape geometry sculpture mapping design pattern graphic structure symmetry algorithm white background indoor center hole size of torus octatorus . distance from the center of rotation number of torus