poid
The curve traced by the centre of a sphere when it rolls or slides over a surface having a sinusoidal profile.
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'%3e%3c/path%3e%3c/g%3e%3cdefs%3e%3cmarker%20markerWidth='4.5'%20markerHeight='4.5'%20refX='2.25'%20refY='2.25'%20viewBox='0%200%204.5%204.5'%20orient='auto'%20id='SvgjsMarker4023'%3e%3cpolygon%20points='0,4.5%201.5,2.25%200,0%204.5,2.25'%20fill='white'%3e%3c/polygon%3e%3c/marker%3e%3c/defs%3e%3c/svg%3e)