iridescent wavy lines intersect in the center. the visual illusion of movement.

art background blue center central centripetal circle circular concentric curl curve effect element expanded fabric geometric graphic green hypnotic illusion illustration intersect intersection iridescent irregular jagged joint juncture line lines monochrome movement optical pattern radial ray red rotation spin spiral stripe swirl texture twirl twist vector vertigo visual vortex wave wavy whirl whirlpool yellow zigzag