diff --git a/doc/infix1.svg b/doc/infix1.svg
new file mode 100644
index 00000000..4f0d3fa7
--- /dev/null
+++ b/doc/infix1.svg
@@ -0,0 +1,296 @@
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+
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+a:hover, a:hover *, a:visited:hover, a:visited:hover *, span[onclick]:hover, div[onclick]:hover, [role=&quot;link&quot;]:hover, [role=&quot;link&quot;]:hover *, [role=&quot;button&quot;]:hover *, [role=&quot;menuitem&quot;]:hover, [role=&quot;menuitem&quot;]:hover *, .link:hover, .link:hover * {
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+    text-shadow: 0 0 5px rgba(255,255,200,0.9) !important}
+a:visited, a:visited * {
+    color: #607069 !important}
+a.highlight, a.highlight *, a.active, a.active *, .selected, .selected *, [href=&quot;#&quot;] {
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+    font-weight: bold !important}
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+[class*=&quot;error&quot;], [class*=&quot;alert&quot;], code, span[onclick], div[onclick] {
+    color: #900 !important}
+
+::-moz-selection {background: #377 !important; color: #000 !important}
+::selection {background: #377 !important; color: #000 !important}
+:focus {outline: none !important}
+
+
+/*----- MENU &amp; CO BACKGROUND-COLORS -----*/
+div[style=&quot;display: block;&quot;], div[role=&quot;navigation&quot;] {background: rgba(0,0,0,.5) !important}
+
+table {
+    background: rgba(40,30,30,.6) !important;
+    border-radius: 6px !important}
+table &gt; tbody &gt; tr:nth-child(even), table &gt; tbody &gt; tr &gt; td:nth-child(even) {
+    background-color: rgba(0,0,0,.2) !important}
+
+iframe, embed, nav, label [onclick], nav ul, div[style*=&quot;position:&quot;][style*=&quot;left:&quot;][style*=&quot;visible&quot;], div[style*=&quot;z-index:&quot;][style*=&quot;left:&quot;][style*=&quot;visible&quot;], div[style*=&quot;-moz-user-select&quot;], div[role=&quot;menu&quot;], div[role=&quot;dialog&quot;], span[class*=&quot;script&quot;] div, [id*=&quot;menu&quot;], [id*=&quot;Menu&quot;], [class*=&quot;dropdown&quot;], [class*=&quot;popup&quot;], [class=&quot;title&quot;], ul[style*=&quot;display:&quot;], ul[style*=&quot;visibility:&quot;] ul, [id*=&quot;nav&quot;] ul, [class*=&quot;nav&quot;] ul, ul[class*=&quot;menu&quot;], a[onclick][style*=&quot;display&quot;], a[id*=&quot;ghosteryfirefox&quot;], #ghostery-purple-bubble, #translator-popup, .menu, .tooltip, .hovercard, .vbmenu_popup {
+    background: rgba(5,5,5,.9) !important;
+    border-radius: 5px;
+    box-shadow: 1px 1px 5px #000 !important}
+header, #header, footer, #footer {
+    background: rgba(19,19,19,.9) !important;
+    box-shadow: 0 0 5px #000 !important}
+body &gt; #dialog, body &gt; .xenOverlay {
+    background: rgba(19,19,19,.96) !important;
+    background-clip: padding-box !important;
+    box-shadow: 0 0 15px #000, inset 0 0 0 1px rgba(200,200,200,.5), inset 0 0 5px #111 !important;
+    border: 10px solid rgba(99,99,99,.7) !important;
+    border-radius: 0 !important;}
+[id*=&quot;overlay&quot;], [id*=&quot;lightbox&quot;], blockquote {
+    background-color: rgba(35,35,35,.9) !important;
+    border-radius: 5px}
+pre, dl, .Message code {
+    background-color: rgba(5,5,5,.5) !important}
+
+
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+    -webkit-appearance: none !important;
+    transition: border-color 0.3s !important;
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+    color: #BBB !important;
+    text-shadow: 0 1px #000 !important;
+    border: 2px solid #333 !important;
+    border-radius: 4px !important;
+    box-shadow: 0 0 2px rgba(0,0,0,.9) !important}
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+    transition: border-color 0.3s !important;
+    background: #060606 !important;
+    color: #BBB !important;
+    text-shadow: 0 1px #000 !important;
+    border-color: #333 !important;
+    box-shadow: 0 0 2px rgba(0,0,0,.9) !important}
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+    color: #FFF !important}
+input *, select *, button *, a.button *, a.submit * {
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+    text-shadow: none !important}
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+    border-top-color: #555 !important;
+    border-bottom-color: #555 !important;
+    border-left-color: #555 !important;
+    border-right-color: #555 !important}
+input:focus, select:focus {
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+input *:hover * {
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+    text-shadow: 0 0 2px #FFF !important}
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+
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+    transition: box-shadow 0.2s, opacity 0.2s !important}
+input[type=&quot;checkbox&quot;]:not([disabled]):hover, input[type=&quot;radio&quot;]:not([disabled]):hover {
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+input[type=&quot;checkbox&quot;]:not([disabled]):active, input[type=&quot;radio&quot;]:not([disabled]):active {
+    box-shadow: 0 0 0 2px #999, 0 0 2px 2px #000 !important}
+input[type=&quot;checkbox&quot;]:checked, input[type=&quot;radio&quot;]:checked {
+    box-shadow: 0 0 0 2px #077, 0 0 2px 2px #000 !important}
+input[type=&quot;checkbox&quot;][disabled], input[type=&quot;radio&quot;][disabled] {
+    opacity: 0.35}
+*/
+input[type=&quot;checkbox&quot;] {border-radius: 1px !important}
+input[type=&quot;radio&quot;], input[type=&quot;radio&quot;]:focus {border-radius: 100% !important}
+input[type=&quot;checkbox&quot;], input[type=&quot;radio&quot;] {min-width: 12px; min-height: 12px}
+input[type=&quot;checkbox&quot;]:checked, input[type=&quot;radio&quot;]:checked {
+    border-color: #077 !important;
+    box-shadow: 0 0 5px #077 !important}
+
+select {
+    padding-right: 15px !important;
+    background: url(data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAcAAAAECAYAAABCxiV9AAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsMAAA7DAcdvqGQAAAAeSURBVBhXY5g5c+Z/BiwALo6uAEMDTACXSWgSDAwA4jATh950E30AAAAASUVORK5CYII=) no-repeat right 4px center #060606 !important;
+    transition: border-color 0.3s, background-position 0.3s !important}
+
+
+button:active, input[type=&quot;submit&quot;]:active, input[type=&quot;button&quot;]:active, a.button:active, a[class*=&quot;button&quot;]:not(:empty):active, a.submit:active, a.BigButton:active, a.TabLink:active, .Active .TabLink {
+    background: #292929 !important;
+    color: #FFF !important}
+
+textarea {
+    -moz-appearance: none !important;
+    -webkit-appearance: none !important;
+    background: rgba(0,0,0,.3) !important;
+    border-radius: 3px !important;
+    border: 1px solid #000 !important;
+    box-shadow: inset 0 0 8px #000 !important;
+    transition: border-color, background, 0.3s !important}
+textarea, textarea * {
+    color: #C8C8C8 !important;
+    text-shadow: 0 0 1px gray !important}
+textarea:hover, textarea:focus:hover {
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+textarea:focus {
+    background: rgba(0,0,0,.5) !important;
+    border-color: #222 !important}
+textarea:focus, textarea:focus &gt; * {
+    text-shadow: none !important;
+    box-shadow: none !important}
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+option, optgroup {
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+    -webkit-appearance: none !important;
+    background: none !important;
+    color: #666 !important}
+optgroup {
+    background: #222 !important;
+    color: #DDD !important}
+option:not([disabled]):hover, option:focus, option:checked {
+    background: linear-gradient(#333, #292929) !important;
+    color: #DDD !important}
+
+
+/*----- IMAGE CHANGES -----*/
+body, *:not(:empty):not(html):not(span):not(a):not(b):not(option):not(select):not(img):not([style=&quot;display: block;&quot;]):not([onclick*=&quot;open&quot;]):not([onclick*=&quot;s_objectID&quot;]):not([class*=&quot;stars&quot;]):not([id*=&quot;stars&quot;]):not([id=&quot;rating&quot;]):not([class=&quot;rating&quot;]):not([class*=&quot;SPRITE&quot;]):not([id*=&quot;SPRITE&quot;]):not([class*=&quot;item&quot;]):not([id*=&quot;item&quot;]):not([class*=&quot;thumb&quot;]):not([class*=&quot;icon&quot;]):not([class*=&quot;photo&quot;]):not(.view):not(.text):not([id*=&quot;lbImage&quot;]):not([class*=&quot;cc-in&quot;]):not([class*=&quot;gr-body&quot;]):not([id*=&quot;watch&quot;]):not(#globalsearch),
+.r3_hm, .gmbutton2 b, .gtab-i, .ph, .bstab-iLft, .csb, #pagination div, [style*=&quot;sprite2.png&quot;], #mw-head-base, #mw-page-base {
+    background-image: none !important}
+
+img {opacity: .7 !important; transition: opacity .2s}
+img:hover, a:hover img, #mpiv-popup {opacity: 1 !important}</style>
+</svg>
diff --git a/doc/infix2.svg b/doc/infix2.svg
new file mode 100644
index 00000000..fdc41d62
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+/*----- DEFAULT BUTTONS, SEARCHBOXES &amp; CO -----*/
+input, select, button, [role=&quot;button&quot;], a.button, a.submit, a.BigButton, a.TabLink, .install[onclick] {
+    -moz-appearance: none !important;
+    -webkit-appearance: none !important;
+    transition: border-color 0.3s !important;
+    background: #060606 !important;
+    color: #BBB !important;
+    text-shadow: 0 1px #000 !important;
+    border: 2px solid #333 !important;
+    border-radius: 4px !important;
+    box-shadow: 0 0 2px rgba(0,0,0,.9) !important}
+a[href=&quot;javascript:;&quot;], a[class*=&quot;button&quot;]:not(:empty), a[id*=&quot;button&quot;]:not(:empty), a[id*=&quot;Button&quot;]:not(:empty), div[class*=&quot;button&quot;][onclick] {
+    transition: border-color 0.3s !important;
+    background: #060606 !important;
+    color: #BBB !important;
+    text-shadow: 0 1px #000 !important;
+    border-color: #333 !important;
+    box-shadow: 0 0 2px rgba(0,0,0,.9) !important}
+a[href=&quot;javascript:;&quot;]:hover, a[class*=&quot;button&quot;]:not(:empty):hover, a[id*=&quot;button&quot;]:hover, a[id*=&quot;Button&quot;]:not(:empty):hover, div[class*=&quot;button&quot;][onclick]:hover {
+    background: #151515 !important;
+    color: #FFF !important}
+input *, select *, button *, a.button *, a.submit * {
+    color: #BBB !important;
+    text-shadow: none !important}
+input:hover, input[type=&quot;button&quot;]:hover, select:hover, button:hover, [role=&quot;button&quot;]:hover, a.button:hover, a.submit:hover, a.BigButton:hover, a.TabLink:hover {
+    border: 2px solid #555 !important;
+    border-top-color: #555 !important;
+    border-bottom-color: #555 !important;
+    border-left-color: #555 !important;
+    border-right-color: #555 !important}
+input:focus, select:focus {
+    box-shadow: 0 0 5px #077 !important}
+input *:hover * {
+    color: #F0F0F0 !important;
+    text-shadow: 0 0 2px #FFF !important}
+input[disabled], select[disabled], button[disabled], input[disabled]:hover, select[disabled]:hover, button[disabled]:hover, input[disabled]:focus, select[disabled]:focus, button[disabled]:focus {
+    opacity: 0.5 !important;
+    border-color: #333 !important}
+
+/*
+input[type=&quot;checkbox&quot;], input[type=&quot;radio&quot;] {
+    box-shadow: 0 0 0 2px #444, 0 0 2px 2px #000 !important;
+    opacity: 0.7;
+    transition: box-shadow 0.2s, opacity 0.2s !important}
+input[type=&quot;checkbox&quot;]:not([disabled]):hover, input[type=&quot;radio&quot;]:not([disabled]):hover {
+    opacity: 0.9}
+input[type=&quot;checkbox&quot;]:not([disabled]):active, input[type=&quot;radio&quot;]:not([disabled]):active {
+    box-shadow: 0 0 0 2px #999, 0 0 2px 2px #000 !important}
+input[type=&quot;checkbox&quot;]:checked, input[type=&quot;radio&quot;]:checked {
+    box-shadow: 0 0 0 2px #077, 0 0 2px 2px #000 !important}
+input[type=&quot;checkbox&quot;][disabled], input[type=&quot;radio&quot;][disabled] {
+    opacity: 0.35}
+*/
+input[type=&quot;checkbox&quot;] {border-radius: 1px !important}
+input[type=&quot;radio&quot;], input[type=&quot;radio&quot;]:focus {border-radius: 100% !important}
+input[type=&quot;checkbox&quot;], input[type=&quot;radio&quot;] {min-width: 12px; min-height: 12px}
+input[type=&quot;checkbox&quot;]:checked, input[type=&quot;radio&quot;]:checked {
+    border-color: #077 !important;
+    box-shadow: 0 0 5px #077 !important}
+
+select {
+    padding-right: 15px !important;
+    background: url(data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAcAAAAECAYAAABCxiV9AAAAAXNSR0IArs4c6QAAAARnQU1BAACxjwv8YQUAAAAJcEhZcwAADsMAAA7DAcdvqGQAAAAeSURBVBhXY5g5c+Z/BiwALo6uAEMDTACXSWgSDAwA4jATh950E30AAAAASUVORK5CYII=) no-repeat right 4px center #060606 !important;
+    transition: border-color 0.3s, background-position 0.3s !important}
+
+
+button:active, input[type=&quot;submit&quot;]:active, input[type=&quot;button&quot;]:active, a.button:active, a[class*=&quot;button&quot;]:not(:empty):active, a.submit:active, a.BigButton:active, a.TabLink:active, .Active .TabLink {
+    background: #292929 !important;
+    color: #FFF !important}
+
+textarea {
+    -moz-appearance: none !important;
+    -webkit-appearance: none !important;
+    background: rgba(0,0,0,.3) !important;
+    border-radius: 3px !important;
+    border: 1px solid #000 !important;
+    box-shadow: inset 0 0 8px #000 !important;
+    transition: border-color, background, 0.3s !important}
+textarea, textarea * {
+    color: #C8C8C8 !important;
+    text-shadow: 0 0 1px gray !important}
+textarea:hover, textarea:focus:hover {
+    border-color: #333 !important}
+textarea:focus {
+    background: rgba(0,0,0,.5) !important;
+    border-color: #222 !important}
+textarea:focus, textarea:focus &gt; * {
+    text-shadow: none !important;
+    box-shadow: none !important}
+
+option, optgroup {
+    -moz-appearance: none !important;
+    -webkit-appearance: none !important;
+    background: none !important;
+    color: #666 !important}
+optgroup {
+    background: #222 !important;
+    color: #DDD !important}
+option:not([disabled]):hover, option:focus, option:checked {
+    background: linear-gradient(#333, #292929) !important;
+    color: #DDD !important}
+
+
+/*----- IMAGE CHANGES -----*/
+body, *:not(:empty):not(html):not(span):not(a):not(b):not(option):not(select):not(img):not([style=&quot;display: block;&quot;]):not([onclick*=&quot;open&quot;]):not([onclick*=&quot;s_objectID&quot;]):not([class*=&quot;stars&quot;]):not([id*=&quot;stars&quot;]):not([id=&quot;rating&quot;]):not([class=&quot;rating&quot;]):not([class*=&quot;SPRITE&quot;]):not([id*=&quot;SPRITE&quot;]):not([class*=&quot;item&quot;]):not([id*=&quot;item&quot;]):not([class*=&quot;thumb&quot;]):not([class*=&quot;icon&quot;]):not([class*=&quot;photo&quot;]):not(.view):not(.text):not([id*=&quot;lbImage&quot;]):not([class*=&quot;cc-in&quot;]):not([class*=&quot;gr-body&quot;]):not([id*=&quot;watch&quot;]):not(#globalsearch),
+.r3_hm, .gmbutton2 b, .gtab-i, .ph, .bstab-iLft, .csb, #pagination div, [style*=&quot;sprite2.png&quot;], #mw-head-base, #mw-page-base {
+    background-image: none !important}
+
+img {opacity: .7 !important; transition: opacity .2s}
+img:hover, a:hover img, #mpiv-popup {opacity: 1 !important}</style>
+  <script
+     id="mesh_polyfill"
+     type="text/javascript">
+!function(){const t=&quot;http://www.w3.org/2000/svg&quot;,e=&quot;http://www.w3.org/1999/xlink&quot;,s=&quot;http://www.w3.org/1999/xhtml&quot;,r=2;if(document.createElementNS(t,&quot;meshgradient&quot;).x)return;const n=(t,e,s,r)=&gt;{let n=new x(.5*(e.x+s.x),.5*(e.y+s.y)),o=new x(.5*(t.x+e.x),.5*(t.y+e.y)),i=new x(.5*(s.x+r.x),.5*(s.y+r.y)),a=new x(.5*(n.x+o.x),.5*(n.y+o.y)),h=new x(.5*(n.x+i.x),.5*(n.y+i.y)),l=new x(.5*(a.x+h.x),.5*(a.y+h.y));return[[t,o,a,l],[l,h,i,r]]},o=t=&gt;{let e=t[0].distSquared(t[1]),s=t[2].distSquared(t[3]),r=.25*t[0].distSquared(t[2]),n=.25*t[1].distSquared(t[3]),o=e&gt;s?e:s,i=r&gt;n?r:n;return 18*(o&gt;i?o:i)},i=(t,e)=&gt;Math.sqrt(t.distSquared(e)),a=(t,e)=&gt;t.scale(2/3).add(e.scale(1/3)),h=t=&gt;{let e,s,r,n,o,i,a,h=new g;return t.match(/(\w+\(\s*[^)]+\))+/g).forEach(t=&gt;{let l=t.match(/[\w.-]+/g),d=l.shift();switch(d){case&quot;translate&quot;:2===l.length?e=new g(1,0,0,1,l[0],l[1]):(console.error(&quot;mesh.js: translate does not have 2 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transform!&quot;);break;case&quot;matrix&quot;:6===l.length?h=h.append(new g(...l)):console.error(&quot;math.js: Incorrect number of arguments for matrix!&quot;);break;default:console.error(&quot;mesh.js: Unhandled transform type: &quot;+d)}}),h},l=t=&gt;{let e=[],s=t.split(/[ ,]+/);for(let t=0,r=s.length-1;t&lt;r;t+=2)e.push(new x(parseFloat(s[t]),parseFloat(s[t+1])));return e},d=(t,e)=&gt;{for(let s in e)t.setAttribute(s,e[s])},c=(t,e,s,r,n)=&gt;{let o,i,a=[0,0,0,0];for(let h=0;h&lt;3;++h)e[h]&lt;t[h]&amp;&amp;e[h]&lt;s[h]||t[h]&lt;e[h]&amp;&amp;s[h]&lt;e[h]?a[h]=0:(a[h]=.5*((e[h]-t[h])/r+(s[h]-e[h])/n),o=Math.abs(3*(e[h]-t[h])/r),i=Math.abs(3*(s[h]-e[h])/n),a[h]&gt;o?a[h]=o:a[h]&gt;i&amp;&amp;(a[h]=i));return a},u=[[1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0],[0,0,0,0,1,0,0,0,0,0,0,0,0,0,0,0],[-3,3,0,0,-2,-1,0,0,0,0,0,0,0,0,0,0],[2,-2,0,0,1,1,0,0,0,0,0,0,0,0,0,0],[0,0,0,0,0,0,0,0,1,0,0,0,0,0,0,0],[0,0,0,0,0,0,0,0,0,0,0,0,1,0,0,0],[0,0,0,0,0,0,0,0,-3,3,0,0,-2,-1,0,0],[0,0,0,0,0,0,0,0,2,-2,0,0,1,1,0,0],[-3,0,3,0,0,0,0,0,-2,0,-1,0,0,0,0,0],[0,0,0,0,-3,0,3,0,0,0,0,0,-2,0,-1,0],[9,-9,-9,9,6,3,-6,-3,6,-6,3,-3,4,2,2,1],[-6,6,6,-6,-3,-3,3,3,-4,4,-2,2,-2,-2,-1,-1],[2,0,-2,0,0,0,0,0,1,0,1,0,0,0,0,0],[0,0,0,0,2,0,-2,0,0,0,0,0,1,0,1,0],[-6,6,6,-6,-4,-2,4,2,-3,3,-3,3,-2,-1,-2,-1],[4,-4,-4,4,2,2,-2,-2,2,-2,2,-2,1,1,1,1]],f=t=&gt;{let e=[];for(let s=0;s&lt;16;++s){e[s]=0;for(let r=0;r&lt;16;++r)e[s]+=u[s][r]*t[r]}return e},p=(t,e,s)=&gt;{const r=e*e,n=s*s,o=e*e*e,i=s*s*s;return t[0]+t[1]*e+t[2]*r+t[3]*o+t[4]*s+t[5]*s*e+t[6]*s*r+t[7]*s*o+t[8]*n+t[9]*n*e+t[10]*n*r+t[11]*n*o+t[12]*i+t[13]*i*e+t[14]*i*r+t[15]*i*o},y=t=&gt;{let e=[],s=[],r=[];for(let s=0;s&lt;4;++s)e[s]=[],e[s][0]=n(t[0][s],t[1][s],t[2][s],t[3][s]),e[s][1]=[],e[s][1].push(...n(...e[s][0][0])),e[s][1].push(...n(...e[s][0][1])),e[s][2]=[],e[s][2].push(...n(...e[s][1][0])),e[s][2].push(...n(...e[s][1][1])),e[s][2].push(...n(...e[s][1][2])),e[s][2].push(...n(...e[s][1][3]));for(let t=0;t&lt;8;++t){s[t]=[];for(let r=0;r&lt;4;++r)s[t][r]=[],s[t][r][0]=n(e[0][2][t][r],e[1][2][t][r],e[2][2][t][r],e[3][2][t][r]),s[t][r][1]=[],s[t][r][1].push(...n(...s[t][r][0][0])),s[t][r][1].push(...n(...s[t][r][0][1])),s[t][r][2]=[],s[t][r][2].push(...n(...s[t][r][1][0])),s[t][r][2].push(...n(...s[t][r][1][1])),s[t][r][2].push(...n(...s[t][r][1][2])),s[t][r][2].push(...n(...s[t][r][1][3]))}for(let t=0;t&lt;8;++t){r[t]=[];for(let e=0;e&lt;8;++e)r[t][e]=[],r[t][e][0]=s[t][0][2][e],r[t][e][1]=s[t][1][2][e],r[t][e][2]=s[t][2][2][e],r[t][e][3]=s[t][3][2][e]}return r};class x{constructor(t,e){this.x=t||0,this.y=e||0}toString(){return`(x=${this.x}, y=${this.y})`}clone(){return new x(this.x,this.y)}add(t){return new x(this.x+t.x,this.y+t.y)}scale(t){return void 0===t.x?new x(this.x*t,this.y*t):new x(this.x*t.x,this.y*t.y)}distSquared(t){let e=this.x-t.x,s=this.y-t.y;return e*e+s*s}transform(t){let e=this.x*t.a+this.y*t.c+t.e,s=this.x*t.b+this.y*t.d+t.f;return new x(e,s)}}class g{constructor(t,e,s,r,n,o){void 0===t?(this.a=1,this.b=0,this.c=0,this.d=1,this.e=0,this.f=0):(this.a=t,this.b=e,this.c=s,this.d=r,this.e=n,this.f=o)}toString(){return`affine: ${this.a} ${this.c} ${this.e} \n       ${this.b} ${this.d} ${this.f}`}append(t){t instanceof g||console.error(&quot;mesh.js: argument to Affine.append is not affine!&quot;);let e=this.a*t.a+this.c*t.b,s=this.b*t.a+this.d*t.b,r=this.a*t.c+this.c*t.d,n=this.b*t.c+this.d*t.d,o=this.a*t.e+this.c*t.f+this.e,i=this.b*t.e+this.d*t.f+this.f;return new g(e,s,r,n,o,i)}}class w{constructor(t,e){this.nodes=t,this.colors=e}paintCurve(t,e){if(o(this.nodes)&gt;r){const s=n(...this.nodes);let r=[[],[]],o=[[],[]];for(let t=0;t&lt;4;++t)r[0][t]=this.colors[0][t],r[1][t]=(this.colors[0][t]+this.colors[1][t])/2,o[0][t]=r[1][t],o[1][t]=this.colors[1][t];let i=new w(s[0],r),a=new w(s[1],o);i.paintCurve(t,e),a.paintCurve(t,e)}else{let s=Math.round(this.nodes[0].x);if(s&gt;=0&amp;&amp;s&lt;e){let r=4*(~~this.nodes[0].y*e+s);t[r]=Math.round(this.colors[0][0]),t[r+1]=Math.round(this.colors[0][1]),t[r+2]=Math.round(this.colors[0][2]),t[r+3]=Math.round(this.colors[0][3])}}}}class m{constructor(t,e){this.nodes=t,this.colors=e}split(){let t=[[],[],[],[]],e=[[],[],[],[]],s=[[[],[]],[[],[]]],r=[[[],[]],[[],[]]];for(let s=0;s&lt;4;++s){const r=n(this.nodes[0][s],this.nodes[1][s],this.nodes[2][s],this.nodes[3][s]);t[0][s]=r[0][0],t[1][s]=r[0][1],t[2][s]=r[0][2],t[3][s]=r[0][3],e[0][s]=r[1][0],e[1][s]=r[1][1],e[2][s]=r[1][2],e[3][s]=r[1][3]}for(let t=0;t&lt;4;++t)s[0][0][t]=this.colors[0][0][t],s[0][1][t]=this.colors[0][1][t],s[1][0][t]=(this.colors[0][0][t]+this.colors[1][0][t])/2,s[1][1][t]=(this.colors[0][1][t]+this.colors[1][1][t])/2,r[0][0][t]=s[1][0][t],r[0][1][t]=s[1][1][t],r[1][0][t]=this.colors[1][0][t],r[1][1][t]=this.colors[1][1][t];return[new m(t,s),new m(e,r)]}paint(t,e){let s,n=!1;for(let t=0;t&lt;4;++t)if((s=o([this.nodes[0][t],this.nodes[1][t],this.nodes[2][t],this.nodes[3][t]]))&gt;r){n=!0;break}if(n){let s=this.split();s[0].paint(t,e),s[1].paint(t,e)}else{new w([...this.nodes[0]],[...this.colors[0]]).paintCurve(t,e)}}}class b{constructor(t){this.readMesh(t),this.type=t.getAttribute(&quot;type&quot;)||&quot;bilinear&quot;}readMesh(t){let e=[[]],s=[[]],r=Number(t.getAttribute(&quot;x&quot;)),n=Number(t.getAttribute(&quot;y&quot;));e[0][0]=new x(r,n);let o=t.children;for(let t=0,r=o.length;t&lt;r;++t){e[3*t+1]=[],e[3*t+2]=[],e[3*t+3]=[],s[t+1]=[];let r=o[t].children;for(let n=0,o=r.length;n&lt;o;++n){let o=r[n].children;for(let r=0,i=o.length;r&lt;i;++r){let i=r;0!==t&amp;&amp;++i;let h,d=o[r].getAttribute(&quot;path&quot;),c=&quot;l&quot;;null!=d&amp;&amp;(c=(h=d.match(/\s*([lLcC])\s*(.*)/))[1]);let u=l(h[2]);switch(c){case&quot;l&quot;:0===i?(e[3*t][3*n+3]=u[0].add(e[3*t][3*n]),e[3*t][3*n+1]=a(e[3*t][3*n],e[3*t][3*n+3]),e[3*t][3*n+2]=a(e[3*t][3*n+3],e[3*t][3*n])):1===i?(e[3*t+3][3*n+3]=u[0].add(e[3*t][3*n+3]),e[3*t+1][3*n+3]=a(e[3*t][3*n+3],e[3*t+3][3*n+3]),e[3*t+2][3*n+3]=a(e[3*t+3][3*n+3],e[3*t][3*n+3])):2===i?(0===n&amp;&amp;(e[3*t+3][3*n+0]=u[0].add(e[3*t+3][3*n+3])),e[3*t+3][3*n+1]=a(e[3*t+3][3*n],e[3*t+3][3*n+3]),e[3*t+3][3*n+2]=a(e[3*t+3][3*n+3],e[3*t+3][3*n])):(e[3*t+1][3*n]=a(e[3*t][3*n],e[3*t+3][3*n]),e[3*t+2][3*n]=a(e[3*t+3][3*n],e[3*t][3*n]));break;case&quot;L&quot;:0===i?(e[3*t][3*n+3]=u[0],e[3*t][3*n+1]=a(e[3*t][3*n],e[3*t][3*n+3]),e[3*t][3*n+2]=a(e[3*t][3*n+3],e[3*t][3*n])):1===i?(e[3*t+3][3*n+3]=u[0],e[3*t+1][3*n+3]=a(e[3*t][3*n+3],e[3*t+3][3*n+3]),e[3*t+2][3*n+3]=a(e[3*t+3][3*n+3],e[3*t][3*n+3])):2===i?(0===n&amp;&amp;(e[3*t+3][3*n+0]=u[0]),e[3*t+3][3*n+1]=a(e[3*t+3][3*n],e[3*t+3][3*n+3]),e[3*t+3][3*n+2]=a(e[3*t+3][3*n+3],e[3*t+3][3*n])):(e[3*t+1][3*n]=a(e[3*t][3*n],e[3*t+3][3*n]),e[3*t+2][3*n]=a(e[3*t+3][3*n],e[3*t][3*n]));break;case&quot;c&quot;:0===i?(e[3*t][3*n+1]=u[0].add(e[3*t][3*n]),e[3*t][3*n+2]=u[1].add(e[3*t][3*n]),e[3*t][3*n+3]=u[2].add(e[3*t][3*n])):1===i?(e[3*t+1][3*n+3]=u[0].add(e[3*t][3*n+3]),e[3*t+2][3*n+3]=u[1].add(e[3*t][3*n+3]),e[3*t+3][3*n+3]=u[2].add(e[3*t][3*n+3])):2===i?(e[3*t+3][3*n+2]=u[0].add(e[3*t+3][3*n+3]),e[3*t+3][3*n+1]=u[1].add(e[3*t+3][3*n+3]),0===n&amp;&amp;(e[3*t+3][3*n+0]=u[2].add(e[3*t+3][3*n+3]))):(e[3*t+2][3*n]=u[0].add(e[3*t+3][3*n]),e[3*t+1][3*n]=u[1].add(e[3*t+3][3*n]));break;case&quot;C&quot;:0===i?(e[3*t][3*n+1]=u[0],e[3*t][3*n+2]=u[1],e[3*t][3*n+3]=u[2]):1===i?(e[3*t+1][3*n+3]=u[0],e[3*t+2][3*n+3]=u[1],e[3*t+3][3*n+3]=u[2]):2===i?(e[3*t+3][3*n+2]=u[0],e[3*t+3][3*n+1]=u[1],0===n&amp;&amp;(e[3*t+3][3*n+0]=u[2])):(e[3*t+2][3*n]=u[0],e[3*t+1][3*n]=u[1]);break;default:console.error(&quot;mesh.js: &quot;+c+&quot; invalid path type.&quot;)}if(0===t&amp;&amp;0===n||r&gt;0){let e=window.getComputedStyle(o[r]).stopColor.match(/^rgb\s*\(\s*(\d+)\s*,\s*(\d+)\s*,\s*(\d+)\s*\)$/i),a=window.getComputedStyle(o[r]).stopOpacity,h=255;a&amp;&amp;(h=Math.floor(255*a)),e&amp;&amp;(0===i?(s[t][n]=[],s[t][n][0]=Math.floor(e[1]),s[t][n][1]=Math.floor(e[2]),s[t][n][2]=Math.floor(e[3]),s[t][n][3]=h):1===i?(s[t][n+1]=[],s[t][n+1][0]=Math.floor(e[1]),s[t][n+1][1]=Math.floor(e[2]),s[t][n+1][2]=Math.floor(e[3]),s[t][n+1][3]=h):2===i?(s[t+1][n+1]=[],s[t+1][n+1][0]=Math.floor(e[1]),s[t+1][n+1][1]=Math.floor(e[2]),s[t+1][n+1][2]=Math.floor(e[3]),s[t+1][n+1][3]=h):3===i&amp;&amp;(s[t+1][n]=[],s[t+1][n][0]=Math.floor(e[1]),s[t+1][n][1]=Math.floor(e[2]),s[t+1][n][2]=Math.floor(e[3]),s[t+1][n][3]=h))}}e[3*t+1][3*n+1]=new x,e[3*t+1][3*n+2]=new x,e[3*t+2][3*n+1]=new x,e[3*t+2][3*n+2]=new x,e[3*t+1][3*n+1].x=(-4*e[3*t][3*n].x+6*(e[3*t][3*n+1].x+e[3*t+1][3*n].x)+-2*(e[3*t][3*n+3].x+e[3*t+3][3*n].x)+3*(e[3*t+3][3*n+1].x+e[3*t+1][3*n+3].x)+-1*e[3*t+3][3*n+3].x)/9,e[3*t+1][3*n+2].x=(-4*e[3*t][3*n+3].x+6*(e[3*t][3*n+2].x+e[3*t+1][3*n+3].x)+-2*(e[3*t][3*n].x+e[3*t+3][3*n+3].x)+3*(e[3*t+3][3*n+2].x+e[3*t+1][3*n].x)+-1*e[3*t+3][3*n].x)/9,e[3*t+2][3*n+1].x=(-4*e[3*t+3][3*n].x+6*(e[3*t+3][3*n+1].x+e[3*t+2][3*n].x)+-2*(e[3*t+3][3*n+3].x+e[3*t][3*n].x)+3*(e[3*t][3*n+1].x+e[3*t+2][3*n+3].x)+-1*e[3*t][3*n+3].x)/9,e[3*t+2][3*n+2].x=(-4*e[3*t+3][3*n+3].x+6*(e[3*t+3][3*n+2].x+e[3*t+2][3*n+3].x)+-2*(e[3*t+3][3*n].x+e[3*t][3*n+3].x)+3*(e[3*t][3*n+2].x+e[3*t+2][3*n].x)+-1*e[3*t][3*n].x)/9,e[3*t+1][3*n+1].y=(-4*e[3*t][3*n].y+6*(e[3*t][3*n+1].y+e[3*t+1][3*n].y)+-2*(e[3*t][3*n+3].y+e[3*t+3][3*n].y)+3*(e[3*t+3][3*n+1].y+e[3*t+1][3*n+3].y)+-1*e[3*t+3][3*n+3].y)/9,e[3*t+1][3*n+2].y=(-4*e[3*t][3*n+3].y+6*(e[3*t][3*n+2].y+e[3*t+1][3*n+3].y)+-2*(e[3*t][3*n].y+e[3*t+3][3*n+3].y)+3*(e[3*t+3][3*n+2].y+e[3*t+1][3*n].y)+-1*e[3*t+3][3*n].y)/9,e[3*t+2][3*n+1].y=(-4*e[3*t+3][3*n].y+6*(e[3*t+3][3*n+1].y+e[3*t+2][3*n].y)+-2*(e[3*t+3][3*n+3].y+e[3*t][3*n].y)+3*(e[3*t][3*n+1].y+e[3*t+2][3*n+3].y)+-1*e[3*t][3*n+3].y)/9,e[3*t+2][3*n+2].y=(-4*e[3*t+3][3*n+3].y+6*(e[3*t+3][3*n+2].y+e[3*t+2][3*n+3].y)+-2*(e[3*t+3][3*n].y+e[3*t][3*n+3].y)+3*(e[3*t][3*n+2].y+e[3*t+2][3*n].y)+-1*e[3*t][3*n].y)/9}}this.nodes=e,this.colors=s}paintMesh(t,e){let s=(this.nodes.length-1)/3,r=(this.nodes[0].length-1)/3;if(&quot;bilinear&quot;===this.type||s&lt;2||r&lt;2){let n;for(let o=0;o&lt;s;++o)for(let s=0;s&lt;r;++s){let r=[];for(let t=3*o,e=3*o+4;t&lt;e;++t)r.push(this.nodes[t].slice(3*s,3*s+4));let i=[];i.push(this.colors[o].slice(s,s+2)),i.push(this.colors[o+1].slice(s,s+2)),(n=new m(r,i)).paint(t,e)}}else{let n,o,a,h,l,d,u;const x=s,g=r;s++,r++;let w=new Array(s);for(let t=0;t&lt;s;++t){w[t]=new Array(r);for(let e=0;e&lt;r;++e)w[t][e]=[],w[t][e][0]=this.nodes[3*t][3*e],w[t][e][1]=this.colors[t][e]}for(let t=0;t&lt;s;++t)for(let e=0;e&lt;r;++e)0!==t&amp;&amp;t!==x&amp;&amp;(n=i(w[t-1][e][0],w[t][e][0]),o=i(w[t+1][e][0],w[t][e][0]),w[t][e][2]=c(w[t-1][e][1],w[t][e][1],w[t+1][e][1],n,o)),0!==e&amp;&amp;e!==g&amp;&amp;(n=i(w[t][e-1][0],w[t][e][0]),o=i(w[t][e+1][0],w[t][e][0]),w[t][e][3]=c(w[t][e-1][1],w[t][e][1],w[t][e+1][1],n,o));for(let t=0;t&lt;r;++t){w[0][t][2]=[],w[x][t][2]=[];for(let e=0;e&lt;4;++e)n=i(w[1][t][0],w[0][t][0]),o=i(w[x][t][0],w[x-1][t][0]),w[0][t][2][e]=n&gt;0?2*(w[1][t][1][e]-w[0][t][1][e])/n-w[1][t][2][e]:0,w[x][t][2][e]=o&gt;0?2*(w[x][t][1][e]-w[x-1][t][1][e])/o-w[x-1][t][2][e]:0}for(let t=0;t&lt;s;++t){w[t][0][3]=[],w[t][g][3]=[];for(let e=0;e&lt;4;++e)n=i(w[t][1][0],w[t][0][0]),o=i(w[t][g][0],w[t][g-1][0]),w[t][0][3][e]=n&gt;0?2*(w[t][1][1][e]-w[t][0][1][e])/n-w[t][1][3][e]:0,w[t][g][3][e]=o&gt;0?2*(w[t][g][1][e]-w[t][g-1][1][e])/o-w[t][g-1][3][e]:0}for(let s=0;s&lt;x;++s)for(let r=0;r&lt;g;++r){let n=i(w[s][r][0],w[s+1][r][0]),o=i(w[s][r+1][0],w[s+1][r+1][0]),c=i(w[s][r][0],w[s][r+1][0]),x=i(w[s+1][r][0],w[s+1][r+1][0]),g=[[],[],[],[]];for(let t=0;t&lt;4;++t){(d=[])[0]=w[s][r][1][t],d[1]=w[s+1][r][1][t],d[2]=w[s][r+1][1][t],d[3]=w[s+1][r+1][1][t],d[4]=w[s][r][2][t]*n,d[5]=w[s+1][r][2][t]*n,d[6]=w[s][r+1][2][t]*o,d[7]=w[s+1][r+1][2][t]*o,d[8]=w[s][r][3][t]*c,d[9]=w[s+1][r][3][t]*x,d[10]=w[s][r+1][3][t]*c,d[11]=w[s+1][r+1][3][t]*x,d[12]=0,d[13]=0,d[14]=0,d[15]=0,u=f(d);for(let e=0;e&lt;9;++e){g[t][e]=[];for(let s=0;s&lt;9;++s)g[t][e][s]=p(u,e/8,s/8),g[t][e][s]&gt;255?g[t][e][s]=255:g[t][e][s]&lt;0&amp;&amp;(g[t][e][s]=0)}}h=[];for(let t=3*s,e=3*s+4;t&lt;e;++t)h.push(this.nodes[t].slice(3*r,3*r+4));l=y(h);for(let s=0;s&lt;8;++s)for(let r=0;r&lt;8;++r)(a=new m(l[s][r],[[[g[0][s][r],g[1][s][r],g[2][s][r],g[3][s][r]],[g[0][s][r+1],g[1][s][r+1],g[2][s][r+1],g[3][s][r+1]]],[[g[0][s+1][r],g[1][s+1][r],g[2][s+1][r],g[3][s+1][r]],[g[0][s+1][r+1],g[1][s+1][r+1],g[2][s+1][r+1],g[3][s+1][r+1]]]])).paint(t,e)}}}transform(t){if(t instanceof x)for(let e=0,s=this.nodes.length;e&lt;s;++e)for(let s=0,r=this.nodes[0].length;s&lt;r;++s)this.nodes[e][s]=this.nodes[e][s].add(t);else if(t instanceof g)for(let e=0,s=this.nodes.length;e&lt;s;++e)for(let s=0,r=this.nodes[0].length;s&lt;r;++s)this.nodes[e][s]=this.nodes[e][s].transform(t)}scale(t){for(let e=0,s=this.nodes.length;e&lt;s;++e)for(let s=0,r=this.nodes[0].length;s&lt;r;++s)this.nodes[e][s]=this.nodes[e][s].scale(t)}}document.querySelectorAll(&quot;rect,circle,ellipse,path,text&quot;).forEach((r,n)=&gt;{let o=r.getAttribute(&quot;id&quot;);o||(o=&quot;patchjs_shape&quot;+n,r.setAttribute(&quot;id&quot;,o));const i=r.style.fill.match(/^url\(\s*&quot;?\s*#([^\s&quot;]+)&quot;?\s*\)/),a=r.style.stroke.match(/^url\(\s*&quot;?\s*#([^\s&quot;]+)&quot;?\s*\)/);if(i&amp;&amp;i[1]){const a=document.getElementById(i[1]);if(a&amp;&amp;&quot;meshgradient&quot;===a.nodeName){const i=r.getBBox();let l=document.createElementNS(s,&quot;canvas&quot;);d(l,{width:i.width,height:i.height});const c=l.getContext(&quot;2d&quot;);let u=c.createImageData(i.width,i.height);const f=new b(a);&quot;objectBoundingBox&quot;===a.getAttribute(&quot;gradientUnits&quot;)&amp;&amp;f.scale(new x(i.width,i.height));const p=a.getAttribute(&quot;gradientTransform&quot;);null!=p&amp;&amp;f.transform(h(p)),&quot;userSpaceOnUse&quot;===a.getAttribute(&quot;gradientUnits&quot;)&amp;&amp;f.transform(new x(-i.x,-i.y)),f.paintMesh(u.data,l.width),c.putImageData(u,0,0);const y=document.createElementNS(t,&quot;image&quot;);d(y,{width:i.width,height:i.height,x:i.x,y:i.y});let g=l.toDataURL();y.setAttributeNS(e,&quot;xlink:href&quot;,g),r.parentNode.insertBefore(y,r),r.style.fill=&quot;none&quot;;const w=document.createElementNS(t,&quot;use&quot;);w.setAttributeNS(e,&quot;xlink:href&quot;,&quot;#&quot;+o);const m=&quot;patchjs_clip&quot;+n,M=document.createElementNS(t,&quot;clipPath&quot;);M.setAttribute(&quot;id&quot;,m),M.appendChild(w),r.parentElement.insertBefore(M,r),y.setAttribute(&quot;clip-path&quot;,&quot;url(#&quot;+m+&quot;)&quot;),u=null,l=null,g=null}}if(a&amp;&amp;a[1]){const o=document.getElementById(a[1]);if(o&amp;&amp;&quot;meshgradient&quot;===o.nodeName){const i=parseFloat(r.style.strokeWidth.slice(0,-2))*(parseFloat(r.style.strokeMiterlimit)||parseFloat(r.getAttribute(&quot;stroke-miterlimit&quot;))||1),a=r.getBBox(),l=Math.trunc(a.width+i),c=Math.trunc(a.height+i),u=Math.trunc(a.x-i/2),f=Math.trunc(a.y-i/2);let p=document.createElementNS(s,&quot;canvas&quot;);d(p,{width:l,height:c});const y=p.getContext(&quot;2d&quot;);let g=y.createImageData(l,c);const w=new b(o);&quot;objectBoundingBox&quot;===o.getAttribute(&quot;gradientUnits&quot;)&amp;&amp;w.scale(new x(l,c));const m=o.getAttribute(&quot;gradientTransform&quot;);null!=m&amp;&amp;w.transform(h(m)),&quot;userSpaceOnUse&quot;===o.getAttribute(&quot;gradientUnits&quot;)&amp;&amp;w.transform(new x(-u,-f)),w.paintMesh(g.data,p.width),y.putImageData(g,0,0);const M=document.createElementNS(t,&quot;image&quot;);d(M,{width:l,height:c,x:0,y:0});let S=p.toDataURL();M.setAttributeNS(e,&quot;xlink:href&quot;,S);const k=&quot;pattern_clip&quot;+n,A=document.createElementNS(t,&quot;pattern&quot;);d(A,{id:k,patternUnits:&quot;userSpaceOnUse&quot;,width:l,height:c,x:u,y:f}),A.appendChild(M),o.parentNode.appendChild(A),r.style.stroke=&quot;url(#&quot;+k+&quot;)&quot;,g=null,p=null,S=null}}})}();
+</script>
+</svg>