Implicit plot in tachyon scene

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Is there a way to get some implicit plot, or some other graphic object in general into a tachyon scene? Something like:

t = Tachyon(xres=400,yres=400, camera_center=(4,30,30), look_at=(0,0,0))
t.ImplicitPlot3d( ... )

Or can I modify the camera_center parameter when using the tachyon viewer in the show() method?