pixelated gradient undulate . black dither texture background. dotted fluid curvy form for banner, poster, leaflet

pattern halftone bitmap curve pixel wave dither gradient abstract noise background element texture vector digital shape design geometric art techno object grain grainy modern dot vintage distort dust figure grunge digitalized bend curved undulate gradation duotone semitone bg bw comic cartoon raster squiggly squiggle curvy wiggly manga anime booklet