LaTeX-examples/tikz/torus/torus.sketch

def torus {
    def n_segs 40
    sweep [draw=black, fill=lightgray, fill opacity=0.75] {n_segs, rotate(360/n_segs, (0,0,0), [0,1,0])}
        sweep {n_segs, rotate(360/n_segs, (1.5,0,0), [0,0,1])}
        (2,0,0)
}

put { view((10,4,2)) } {{torus}}

global { language tikz }