black halftone lines in vortex form. geometric art. trendy .circular and radial lines volute, helix

pattern vector illustration white circle black geometric graphic lines doodle ornament mandala shape monochrome optical grayscale helix element circular vortex whirlpool spin spiral rotation greyscale abstractionism volute whorl rotating minimal concentric radial cyclic loop twirl radiating gyration torsion twist whirl bw eddy misc illusory op nonfigural rotary swirl round revolve