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path: root/fonts/knot/sides.mf
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def sideonetop =
	z0 = (0w,.5h);
	penpos0(croswid, a4);
	z1 = z0;
	penpos1(knotwid, a4);
	z2 = (.25w,.75h);
	penpos2(knotwid, a4);
	z3 = (.75w,.75h);
	penpos3(knotwid, a3);
	z4 = z6r;
	penpos4(knotwid, a3);
	z5 = (w,.5h);
	penpos5(croswid, a2);
	z6 = z5;
	penpos6(knotwid, a2);
	z7 = (.75w,.25h);
	penpos7(knotwid, a2);
	z8 = (.75w,0h);
	penpos8(knotwid, a2);
	z9 = (.25w,0h);
	penpos9(knotwid, a1);
	z10 = (.25w,.25h);
	penpos10(knotwid, a1);
	z11 = z0r;
	penpos11(knotwid, a1);

	llrrexp(11);
	penstroke z1e---z2e---z3e---z4e;
	penstroke z6e---z7e{down}---z8e;
	penstroke z9e---{up}z10e---z11e;
enddef;

def sideonebot =
	z0 = (1w,.5h);
	penpos0(croswid, a2);
	z1 = z0;
	penpos1(knotwid, a2);
	z2 = (.75w,.25h);
	penpos2(knotwid, a2);
	z3 = (.25w,.25h);
	penpos3(knotwid, a1);
	z4 = z6r;
	penpos4(knotwid, a1);
	z5 = (0w,.5h);
	penpos5(croswid, a4);
	z6 = z5;
	penpos6(knotwid, a4);
	z7 = (.25w,.75h);
	penpos7(knotwid, a4);
	z8 = (.25w,1h);
	penpos8(knotwid, a1);
	z9 = (.75w,1h);
	penpos9(knotwid, a2);
	z10 = (.75w,.75h);
	penpos10(knotwid, a3);
	z11 = z0r;
	penpos11(knotwid, a3);

	llrrexp(11);
	penstroke z1e---z2e---z3e---z4e;
	penstroke z6e---z7e{up}---z8e;
	penstroke z9e---{down}z10e---z11e;
enddef;

beginchar ("`", sqwid#, sqht#, 0); "sideone top";
	sideonetop;
endchar;

beginchar ("a", sqwid#, sqht#, 0); "sideone bot";
	sideonebot;
endchar;

beginchar ("b", sqwid#, sqht#, 0); "sideone left";
	sideonetop;
	currentpicture := currentpicture rotated 90 shifted (w, 0);
endchar;

beginchar ("c", sqwid#, sqht#, 0); "sideone right";
	sideonebot;
	currentpicture := currentpicture rotated 90 shifted (w, 0);
endchar;

def sidetwotop =
	z0 = (0w,.5h);
	penpos0(croswid, a4);
	z1 = z0;
	penpos1(knotwid, a4);
	z2 = z3r;
	penpos2(knotwid, a4);
	z3 = (.5w,1h);
	penpos3(croswid, a3);
	z4 = z3;
	penpos4(knotwid, a3);
	z5 = z6r;
	penpos5(knotwid, a3);
	z6 = (1w,.5h);
	penpos6(croswid, a2);
	z7 = z6;
	penpos7(knotwid, a2);
	z8 = (.75w,.25h);
	penpos8(knotwid, a2);
	z9 = (.75w,0h);
	penpos9(knotwid, a2);
	z10 = (.25w,0h);
	penpos10(knotwid, a1);
	z11 = (.25w,.25h);
	penpos11(knotwid, a1);
	z12 = z0r;
	penpos12(knotwid, a1);

	llrrexp(12);
	penstroke z1e---z2e;
	penstroke z4e---z5e;
	penstroke z7e---z8e{down}---z9e;
	penstroke z10e---{up}z11e---z12e;
enddef;

def sidetwobot =
	z0 = (1w,.5h);
	penpos0(croswid, a2);
	z1 = z0;
	penpos1(knotwid, a2);
	z2 = z3r;
	penpos2(knotwid, a2);
	z3 = (.5w,0h);
	penpos3(croswid, a1);
	z4 = z3;
	penpos4(knotwid, a1);
	z5 = z6r;
	penpos5(knotwid, a1);
	z6 = (0w,.5h);
	penpos6(croswid, a4);
	z7 = z6;
	penpos7(knotwid, a4);
	z8 = (.25w,.75h);
	penpos8(knotwid, a4);
	z9 = (.25w,1h);
	penpos9(knotwid, a1);
	z10 = (.75w,1h);
	penpos10(knotwid, a2);
	z11 = (.75w,.75h);
	penpos11(knotwid, a3);
	z12 = z0r;
	penpos12(knotwid, a3);

	llrrexp(12);
	penstroke z1e---z2e;
	penstroke z4e---z5e;
	penstroke z7e---z8e{up}---z9e;
	penstroke z10e---{down}z11e---z12e;
enddef;

beginchar ("d", sqwid#, sqht#, 0); "sidetwo top";
	sidetwotop;
endchar;

beginchar ("e", sqwid#, sqht#, 0); "sidetwo bot";
	sidetwobot;
endchar;

beginchar ("f", sqwid#, sqht#, 0); "sidetwo left";
	sidetwotop;
	currentpicture := currentpicture rotated 90 shifted (w, 0);
endchar;

beginchar ("g", sqwid#, sqht#, 0); "sidetwo right";
	sidetwobot;
	currentpicture := currentpicture rotated 90 shifted (w, 0);
endchar;

def sidehoriz =
  z1 = (.25w, h);
  penpos1(knotwid, 3);
  z2 = (.25w, 0h);
  penpos2(knotwid, 3);
  z3 = (.75w, h);
  penpos3(knotwid, 2);
  z4 = (.75w, 0h);
  penpos4(knotwid, 2);

  llrrexp(4);
  penstroke z1e---z2e;
  penstroke z3e---z4e;
enddef;

beginchar ("h", sqwid#, sqht#, 0); "horizontal side";
	sidehoriz;
	currentpicture := currentpicture rotated 90 shifted (w, 0);
endchar;

beginchar ("i", sqwid#, sqht#, 0); "verticle side";
	sidehoriz;
	currentpicture := currentpicture rotated 90 shifted (w, 0);
endchar;