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Here you can Sed posuere consectetur est at lobortis. Donec ullamcorper nulla non metus auctor fringilla. Maecenas sed diam eget risus varius blandit sit amet non magna. Donec id elit non mi porta gravida at eget metus. Praesent commodo cursus magna, vel scelerisque nisl consectetur et.

            
              - var vb_u = 1000, k = .05;
- var vb_w = Math.ceil(2*Math.PI)*vb_u;
- var pr = Math.round(.1*k*vb_w), na = Math.round(2*pr);
- var vb_h = (2*Math.cos(0) + 1)*vb_u;
- var vb_x = -.5*vb_w, vb_y = -.5*vb_h;
- var ax_x = (k - 1)*vb_x, ax_y = (k - 1)*vb_y;
- var ka = 6, au = Math.PI/ka;
- var px = Math.round((.5*Math.PI)*vb_u);
- var py = Math.round(vb_u*Math.cos(0));
- var kg = 40, gu = Math.PI/kg;
- var gy = Math.round(Math.cos(0)*vb_u);
- var fs = 3*na, ps = 2*pr, pr1 = Math.round(5*pr/7);
- var cp1 = Math.round(.17*px), cp2 = Math.round(.59*px);

svg(viewBox=[vb_x, vb_y, vb_w, vb_h].join(' ')
		 xmlns='http://www.w3.org/2000/svg'
		 xmlns:xlink='http://www.w3.org/1999/xlink')
	style
		| [d], [r] {
		|   fill: none;
		| 	stroke: #ccc;
		|   vector-effect: non-scaling-stroke
		| }
		| [d] { mix-blend-mode: darken }
		| [x] {
		|   font: #{fs}px consolas, monaco, monospace;
		|   letter-spacing: #{-fs/5}
		| }
		| #e [d] { fill: #333; stroke: none }
		| [d] + [x], tspan { font-style: italic }
		| use + [d], [x] + [d], [r] { stroke-width: 2 }
		| [x] + [d], [r] {
		| 	stroke: #333;
		| 	marker-end: url(#e)
		| }
		| [id=v] [d] { stroke-width: 4 }
		| g * + [d] { stroke: #a57 }
		| [d] + [d] {
		| 	fill: url(#p);
		| 	stroke: #e83;
		| 	stroke-dasharray: 8
		| }
		| #p *, [r] { fill: #e83 }
		| @supports not (vector-effect: non-scaling-stroke) {
		| 	[d][d] { stroke-width: 19; marker: none }
		| }
	marker#e(markerWidth=na markerHeight=na 
						viewBox='0 -4 8 8' 
						orient='auto' refX='7')
		path(d='M8 0 0-4V4')
	pattern#p(width=na height=na patternUnits='userSpaceOnUse' patternTransform='rotate(45)')
		rect(width=ps height=Math.round(.2*na))
	
	- var gd = [];
	- for(var i = 0; i <= ka; i++) {
		- var ca = i*au;
		- var cx = Math.round(ca*vb_u);
		- var cy = Math.round(Math.cos(ca)*vb_u);
		- if(ca > 0) {
			- gd.push(`M${cx} ${gy}V${-gy}`);
		- }
		- if(cy < 0) {
			- gd.push(`M${-ax_x} ${cy}H${ax_x}`)
		-}
	- }
	path#u(d=gd.join(''))
	
	use(xlink:href='#u' transform='rotate(180)')
	
	text(x=.5*fs y=(.7*fs - ax_y)) sin(<tspan>k</tspan>)
	path(d=`M0 ${ax_y}V${-ax_y}`)
	text(x=(ax_x - .5*fs) y=-.5*fs) k
	path(d=`M${-ax_x} 0H${ax_x}`)
	
	path(d=`M${-px}${-py}H${px}V${py}H${-px}z`)
	
	g#v
		path(d=`M${2*px} 0 C${2*px - cp1} ${-cp1} ${2*px - cp2} ${-py} ${px}${-py}`)
		circle(r=pr1 cx=px)
		path(d=`M0 0 C${cp1} ${-cp1} ${cp2} ${-py} ${px}${-py}`)
		circle(r=pr cx=px cy=-py)
		circle(r=pr cx=2*px)
		circle(r=pr1 cy=py)
	
	use(xlink:href='#v' transform='rotate(180)')
	circle(r=pr)
	
	text(x=(px + .2*fs) y=Math.round(.9*fs)) 90°
	text(x=-(2.3*fs + px) y=Math.round(-.2*fs)) -90°
	text(x=-.75*fs y=-Math.round(py + .2*fs)) 1
	text(x=Math.round(.1*fs) y=Math.round(py + .9*fs)) -1
	
// minimal SVG
<svg viewBox='-3500 -1500 7000 3000' xmlns='http://www.w3.org/2000/svg' xmlns:xlink='http://www.w3.org/1999/xlink'><style>[d],[r]{fill:none;stroke:#ccc;vector-effect:non-scaling-stroke}[d]{mix-blend-mode:darken}[x]{font:210px consolas,monaco,monospace;letter-spacing:-42}#e [d]{fill:#333;stroke:none}[d]+[x],tspan{font-style:italic}use+[d],[x]+[d],[r]{stroke-width:2}[x]+[d],[r]{stroke:#333;marker-end:url(#e)}[id=v] [d]{stroke-width:4}g *+[d]{stroke:#a57}[d]+[d]{fill:url(#p);stroke:#e83;stroke-dasharray:8}#p *,[r]{fill:#e83}@supports not (vector-effect:non-scaling-stroke){[d][d]{stroke-width:19;marker:none}}</style><marker id='e' markerWidth='70' markerHeight='70' viewBox='0 -4 8 8' orient='auto' refX='7'><path d='M8 0 0-4V4'/></marker><pattern id='p' width='70' height='70' patternUnits='userSpaceOnUse' patternTransform='rotate(45)'><rect width='70' height='14'/></pattern><path id='u' d='M524 1000V-1000M1047 1000V-1000M1571 1000V-1000M2094 1000V-1000M-3325-500H3325M2618 1000V-1000M-3325-866H3325M3142 1000V-1000M-3325-1000H3325'/><use xlink:href='#u' transform='rotate(180)'/><text x='105' y='-1278'>sin(<tspan>k</tspan>)</text><path d='M0 1425V-1425'/><text x='3220' y='-105'>k</text><path d='M-3325 0H3325'/><path d='M-1571-1000H1571V1000H-1571z'/><g id='v'><path d='M3142 0 C2875-267 2215-1000 1571-1000'/><circle r='25' cx='1571'/><path d='M0 0 C267-267 927-1000 1571-1000'/><circle r='35' cx='1571' cy='-1000'/><circle r='35' cx='3142'/><circle r='25' cy='1000'/></g><use xlink:href='#v' transform='rotate(180)'/><circle r='35'/><text x='1613' y='189'>90°</text><text x='-2054' y='-42'>-90°</text><text x='-157.5' y='-1042'>1</text><text x='21' y='1189'>-1</text></svg>
            
          
!
            
              body {
	display: flex;
	flex-direction: column;
	margin: 0;
	height: 100vh;
}
            
          
!
            
              // minimal SVG https://codepen.io/thebabydino/pen/QMMQda
            
          
!
999px
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