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HTML

              
                - var vb_u = 2000, k = .05;
- var vb_h = 1.5*vb_u, vb_w = 2.5*vb_u;
- var pr = Math.round(.1*k*vb_w), na = Math.round(2*pr);
- var vb_x = -.5*(vb_w - vb_u);
- var vb_y = -.5*(vb_h + vb_u);
- var ax_xp = k*vb_w, ax_yp = k*vb_h;
- var ax_x0 = vb_x + ax_xp, ax_x1 = .5*(vb_w + vb_u) - ax_xp;
- var ax_y0 = .5*(vb_h - vb_u) - ax_yp, ax_y1 = vb_y + ax_xp;
- var fs = Math.round(3*na), n = 4, gu = vb_u/n;
- var m = 180, ba = Math.PI/m, bu = vb_u/m;
- var cp1 = .59*.5*vb_u, cp2 = vb_u - cp1;
- var dcp = .17*.5*vb_u, pr1 = Math.round(5*pr/7);
- var cp3 = .5*vb_u - dcp, cp4 = .5*vb_u + dcp;

svg(viewBox=[vb_x, vb_y, vb_w, vb_h].join(' ')
		 xmlns='http://www.w3.org/2000/svg')
	style
		| [d], [r] {
		|   fill: none;
		| 	stroke: #ccc;
		|   vector-effect: non-scaling-stroke
		| }
		| [x] {
		|   font: #{fs}px consolas, monaco, monospace;
		|   letter-spacing: #{-fs/5}
		| }
		| #e [d] { fill: #333; stroke: none }
		| [x] + [d], [r] {
		| 	stroke-width: 2;
		|   stroke: #333;
		|   marker-end: url(#e)
		| }
		| [d] + [x], tspan { font-style: italic }
		| [r] ~ [d] {
		| 	stroke: #a57;
		|		stroke-width: 4
		| }
		| [r] ~ [d] + [d] {
		| 	opacity: .7;
		|		stroke: #e83;
		| 	stroke-dasharray: 8
		| }
		| [r] { fill: #e83 }
		| @supports not (vector-effect: non-scaling-stroke) {
		| 	[d][d] { stroke-width: 14; marker: none }
		| }
	marker#e(markerWidth=na markerHeight=na 
						viewBox='0 -4 8 8' 
						orient='auto' refX='7')
		path(d='M8 0 0-4V4')
	text(x=.5*fs y=(.7*fs + ax_y1)) (sin((<tspan>k</tspan>-½)·π)+1)·½
	path(d=`M0 ${ax_y0}V${ax_y1}`)
	text(x=(ax_x1 - .5*fs) y=-.5*fs) k
	path(d=`M${ax_x0} 0H${ax_x1}`)
	
	- var gd = [];
	- for(var i = 1; i <= n; i++) {
		- var cg = i*gu;
		- gd.push(`M${cg} ${-vb_u}V0`);
		- gd.push(`M${vb_u} ${-cg}H0`);
	- }
	path(d=gd.join(''))
	
	circle(r=pr1 cx=.5*vb_u)
	circle(r=pr1 cy=-.5*vb_u)
	circle(r=pr1 cx=vb_u)
	circle(r=pr1 cy=-vb_u)
	
	- var gd = [];
	- for(var i = 0; i <= m; i++) {
		- var x = Math.round(i*bu);
		- var y = -Math.round(.5*(1 - Math.cos(i*ba))*vb_u);
		- gd.push([x, y]);
	- }
	path(d=`M${gd.join(' ')}`)
	
	path(d=`M0 0C${.42*vb_u} 0 ${.58*vb_u}${-vb_u} ${vb_u}${-vb_u}`)
	
	circle(r=pr)
	circle(r=pr cx=vb_u cy=-vb_u)
	
	text(x=-.7*fs y=.9*fs) 0
	text(x=.5*(vb_u - fs) y=.9*fs) .5
	text(x=(vb_u - .3*fs) y=.9*fs) 1
	text(x=-1.3*fs y=.3*fs - .5*vb_u) .5
	text(x=-.7*fs y=.3*fs - vb_u) 1

// minimal SVG
<svg viewBox='-1500 -2500 5000 3000' xmlns='http://www.w3.org/2000/svg'><style>[d],[r]{fill:none;stroke:#ccc;vector-effect:non-scaling-stroke}[x]{font:150px consolas,monaco,monospace;letter-spacing:-30}#e [d]{fill:#333;stroke:none}[x]+[d],[r]{stroke-width:2;stroke:#333;marker-end:url(#e)}[d]+[x],tspan{font-style:italic}[r]~[d]{stroke:#a57;stroke-width:4}[r]~[d]+[d]{opacity:.7;stroke:#e83;stroke-dasharray:8}[r]{fill:#e83}@supports not (vector-effect:non-scaling-stroke){[d][d]{stroke-width:14;marker:none}}</style><marker id='e' markerWidth='50' markerHeight='50' viewBox='0 -4 8 8' orient='auto' refX='7'><path d='M8 0 0-4V4'/></marker><text x='75' y='-2145'>(sin((<tspan>k</tspan>-½)·π)+1)·½</text><path d='M0 350V-2250'/><text x='3175' y='-75'>k</text><path d='M-1250 0H3250'/><path d='M500-2000V0M2000-500H0M1000-2000V0M2000-1000H0M1500-2000V0M2000-1500H0M2000-2000V0M2000-2000H0'/><circle r='18' cx='1000'/><circle r='18' cy='-1000'/><circle r='18' cx='2000'/><circle r='18' cy='-2000'/><path d='M0,0 11,0 22-1 33-1 44-2 56-4 67-5 78-7 89-10 100-12 111-15 122-18 133-22 144-26 156-30 167-34 178-39 189-44 200-49 211-54 222-60 233-66 244-73 256-79 267-86 278-94 289-101 300-109 311-117 322-125 333-134 344-143 356-152 367-161 378-171 389-181 400-191 411-201 422-212 433-223 444-234 456-245 467-257 478-269 489-281 500-293 511-305 522-318 533-331 544-344 556-357 567-371 578-384 589-398 600-412 611-426 622-441 633-455 644-470 656-485 667-500 678-515 689-531 700-546 711-562 722-577 733-593 744-609 756-625 767-642 778-658 789-674 800-691 811-708 822-724 833-741 844-758 856-775 867-792 878-809 889-826 900-844 911-861 922-878 933-895 944-913 956-930 967-948 978-965 989-983 1000-1000 1011-1017 1022-1035 1033-1052 1044-1070 1056-1087 1067-1105 1078-1122 1089-1139 1100-1156 1111-1174 1122-1191 1133-1208 1144-1225 1156-1242 1167-1259 1178-1276 1189-1292 1200-1309 1211-1326 1222-1342 1233-1358 1244-1375 1256-1391 1267-1407 1278-1423 1289-1438 1300-1454 1311-1469 1322-1485 1333-1500 1344-1515 1356-1530 1367-1545 1378-1559 1389-1574 1400-1588 1411-1602 1422-1616 1433-1629 1444-1643 1456-1656 1467-1669 1478-1682 1489-1695 1500-1707 1511-1719 1522-1731 1533-1743 1544-1755 1556-1766 1567-1777 1578-1788 1589-1799 1600-1809 1611-1819 1622-1829 1633-1839 1644-1848 1656-1857 1667-1866 1678-1875 1689-1883 1700-1891 1711-1899 1722-1906 1733-1914 1744-1921 1756-1927 1767-1934 1778-1940 1789-1946 1800-1951 1811-1956 1822-1961 1833-1966 1844-1970 1856-1974 1867-1978 1878-1982 1889-1985 1900-1988 1911-1990 1922-1993 1933-1995 1944-1996 1956-1998 1967-1999 1978-1999 1989-2000 2000-2000'/><path d='M0 0C840 0 1160-2000 2000-2000'/><circle r='25'/><circle r='25' cx='2000' cy='-2000'/><text x='-105' y='135'>0</text><text x='925' y='135'>.5</text><text x='1955' y='135'>1</text><text x='-195' y='-955'>.5</text><text x='-105' y='-1955'>1</text></svg>
              
            
!

CSS

              
                body {
	display: flex;
	flex-direction: column;
	margin: 0;
	height: 100vh;
}
              
            
!

JS

              
                // minimal SVG https://codepen.io/thebabydino/pen/gxxQOX
              
            
!
999px

Console