(function () { var PEN = [['M322,17C322,17 314,13 308,12C301,12 290,14 282,17C275,21 269,25 264,31C259,38 256,45 252,55C245,71 236,109 231,123C229,129 227,132 225,136C223,141 221,144 219,151C215,164 208,197 203,210C200,217 198,218 196,224C191,236 186,262 180,278C176,291 171,305 165,314C160,321 155,326 149,329C143,333 136,335 129,336C123,337 115,338 110,336C106,334 101,331 99,328C96,324 95,319 94,313C94,304 98,292 101,281C105,268 111,249 117,239C122,231 127,226 133,222C139,218 144,216 152,214C163,212 181,212 194,212C205,213 217,213 225,216C233,219 239,224 243,229C248,234 251,240 254,246C256,253 257,261 256,269C256,279 253,290 249,301C245,313 239,326 231,336C224,348 215,358 205,367C195,377 184,385 173,392C161,399 149,404 137,408C124,412 111,414 99,414C89,414 79,413 70,411C61,409 53,405 45,400C38,395 32,389 27,382C22,375 19,367 16,358C14,349 13,340 14,330C14,319 17,308 21,295C26,276 35,248 43,231C50,217 56,208 65,198C73,188 84,178 94,170C105,162 117,155 129,149C141,144 151,141 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1980,347',[[0.0,0.02,23],[0.02,0.023,28],[0.023,0.026,31],[0.026,0.037,32],[0.037,0.043,29],[0.043,0.141,27],[0.141,0.146,30],[0.146,0.15,31],[0.15,0.161,29],[0.161,0.166,29],[0.166,0.172,30],[0.172,0.255,27],[0.255,0.286,24],[0.286,0.359,24],[0.359,0.433,26],[0.433,0.524,28],[0.524,0.551,25],[0.551,0.636,24],[0.636,0.741,25],[0.741,0.76,29],[0.76,0.769,30],[0.769,0.782,28],[0.782,0.857,25],[0.857,0.926,24],[0.926,0.962,25],[0.962,0.966,27],[0.966,1.0,23]]]]; var SPANS = [[0.0,0.19774],[0.21117,0.26516],[0.27165,0.32775],[0.33491,0.42692],[0.42816,0.46193],[0.46849,0.5319],[0.54488,0.56139],[0.56234,0.6066],[0.61255,0.65874],[0.66454,0.76432],[0.77027,0.79272],[0.80111,0.81327],[0.81653,0.87713],[0.88376,0.91967],[0.92742,1.0]]; var HOVER_INTENT = 90, EPS = 3; function parse(d) { var n = d.match(/-?[\d.]+/g).map(Number), segs = [], cur = [n[0], n[1]], i = 2; while (i + 5 < n.length + 1) { var s = [cur, [n[i], n[i+1]], [n[i+2], n[i+3]], [n[i+4], n[i+5]]]; segs.push(s); cur = s[3]; i += 6; } return segs; } function lerp(a, b, t) { return [a[0] + (b[0]-a[0])*t, a[1] + (b[1]-a[1])*t]; } function at(s, t) { var m = 1-t; return [m*m*m*s[0][0] + 3*m*m*t*s[1][0] + 3*m*t*t*s[2][0] + t*t*t*s[3][0], m*m*m*s[0][1] + 3*m*m*t*s[1][1] + 3*m*t*t*s[2][1] + t*t*t*s[3][1]]; } function split(s, t) { var a = lerp(s[0],s[1],t), b = lerp(s[1],s[2],t), c = lerp(s[2],s[3],t), d = lerp(a,b,t), e = lerp(b,c,t), f = lerp(d,e,t); return [[s[0],a,d,f], [f,e,c,s[3]]]; } var K = 24; function measure(segs) { var lut = [], len = [], tot = 0; for (var i = 0; i < segs.length; i++) { var cum = [0], prev = segs[i][0]; for (var k = 1; k <= K; k++) { var p = at(segs[i], k/K); cum.push(cum[k-1] + Math.hypot(p[0]-prev[0], p[1]-prev[1])); prev = p; } lut.push(cum); len.push(cum[K]); tot += cum[K]; } return { lut: lut, len: len, tot: tot }; } function locate(segs, m, f) { var target = Math.min(Math.max(f, 0), 0.999999) * m.tot, k = 0; while (k < segs.length - 1 && target > m.len[k]) { target -= m.len[k]; k++; } var cum = m.lut[k], j = 0; while (j < K && cum[j+1] < target) j++; var span = cum[j+1] - cum[j] || 1; return [k, Math.min(Math.max((j + (target - cum[j]) / span) / K, 0), 1)]; } function slice(segs, m, a, b) { var A = locate(segs, m, a), B = locate(segs, m, b), out; if (A[0] === B[0]) { var t2 = (B[1] - A[1]) / (1 - A[1] || 1); out = [split(split(segs[A[0]], A[1])[1], Math.min(Math.max(t2, 0), 1))[0]]; } else { out = [split(segs[A[0]], A[1])[1]]; for (var i = A[0]+1; i < B[0]; i++) out.push(segs[i]); out.push(split(segs[B[0]], B[1])[0]); } var r = function (v) { return Math.round(v*10)/10; }; var d = 'M' + r(out[0][0][0]) + ',' + r(out[0][0][1]); for (var q = 0; q < out.length; q++) { var s = out[q]; d += 'C' + r(s[1][0]) + ',' + r(s[1][1]) + ' ' + r(s[2][0]) + ',' + r(s[2][1]) + ' ' + r(s[3][0]) + ',' + r(s[3][1]); } return d; } var NS = 'http://www.w3.org/2000/svg', COUNT = 0; function build(svg) { var mask = svg.querySelector('mask'), ink = svg.querySelector('[data-sign-ink]'); if (!mask || !ink) return null; mask.id = 'cym-write-nib-' + (++COUNT); var kids = ink.children; for (var i = 0; i < kids.length; i++) kids[i].setAttribute('mask', 'url(#' + mask.id + ')'); var host = mask.querySelector('[data-sign-nibs]'), out = []; for (var s = 0; s < PEN.length; s++) { var segs = parse(PEN[s][0]), m = measure(segs), runs = PEN[s][1], eps = EPS / m.tot, els = []; for (var r = 0; r < runs.length; r++) { var a = runs[r][0], b = runs[r][1], ga = r === 0 ? a : Math.max(0, a - eps); var el = document.createElementNS(NS, 'path'); el.setAttribute('d', slice(segs, m, ga, Math.min(b, 0.999999))); el.setAttribute('pathLength', 1000); el.setAttribute('stroke-width', runs[r][2]); host.appendChild(el); els.push([ga, a, b, el]); } out.push(els); } return out; } function draw(cfg, p, n) { for (var s = 0; s < cfg.nibs.length; s++) { var sp = SPANS[s], q = (p - sp[0]) / (sp[1] - sp[0]); q = q < 0 ? 0 : q > 1 ? 1 : q; var els = cfg.nibs[s]; for (var r = 0; r < els.length; r++) { var ga = els[r][0], a = els[r][1], b = els[r][2], el = els[r][3]; if (q <= a) { el.style.display = 'none'; continue; } el.style.display = ''; var e = Math.min(b, q), span = b - ga, dash = (e - ga) / span * 1000; el.setAttribute('stroke-dasharray', dash + ' ' + (1000 - dash + .01)); el.setAttribute('stroke-dashoffset', 0); el.setAttribute('stroke-linecap', e < b - 1e-6 ? 'round' : 'butt'); } } if (cfg.ghostLayer) cfg.ghostLayer.setAttribute('opacity', p < 1 ? cfg.ghost : 0); if (cfg.note) { var r = 1 - (1 - Math.min(Math.max(n, 0), 1)) * (1 - Math.min(Math.max(n, 0), 1)); var o = n <= 0 || n >= 1 ? 0 : (n < .22 ? n / .22 : 1 - (n - .22) / .78); cfg.note.setAttribute('opacity', o < 0 ? 0 : o); cfg.note.setAttribute('transform', 'translate(' + (1958 + r * 34) + ',' + (352 - r * 155) + ') rotate(' + (-5 + r * 15) + ',20,-26) scale(' + (.82 + r * .18) + ')'); } } function pace(t) { var A = .07; if (t < A) return t*t / (2*A) / (1 - A); if (t > 1-A) { var u = 1-t; return 1 - u*u / (2*A) / (1 - A); } return (t - A/2) / (1 - A); } function frame(cfg, ms) { draw(cfg, pace(Math.min(ms / cfg.dur, 1)), cfg.noteDur ? (ms - cfg.dur) / cfg.noteDur : 0); } function play(svg, cfg) { if (cfg.running) return; cfg.running = true; var total = cfg.dur + cfg.noteDur; frame(cfg, 0); if (window.gsap) { gsap.to({ p: 0 }, { p: 1, duration: total/1000, ease: 'none', onUpdate: function () { frame(cfg, this.targets()[0].p * total); }, onComplete: function () { draw(cfg, 1, 1); cfg.running = false; } }); return; } var t0 = null; requestAnimationFrame(function tick(now) { if (t0 === null) t0 = now; var ms = now - t0; frame(cfg, Math.min(ms, total)); if (ms < total) requestAnimationFrame(tick); else cfg.running = false; }); } function wire(svg) { var nibs = build(svg); if (!nibs) return; var d = svg.dataset; var cfg = { nibs: nibs, ghostLayer: svg.querySelector('[data-sign-ghost-layer]'), note: svg.querySelector('[data-sign-note]'), ghost: Math.max(0, Math.min(1, parseFloat(d.signGhost) || 0)), dur: parseInt(d.signDuration, 10) || 3332, noteDur: d.signNote === '0' ? 0 : (parseInt(d.signNote, 10) || 833), running: false }; if (!cfg.noteDur && cfg.note) cfg.note.remove(); svg.__cymWrite = cfg; draw(cfg, 1, 0); if (window.matchMedia && window.matchMedia('(prefers-reduced-motion: reduce)').matches) return; var trig = d.signTrigger || 'view'; if (trig === 'none') return; if (trig === 'hover') { if (window.matchMedia && !window.matchMedia('(hover: hover)').matches) return; var target = svg.closest('a') || svg, timer = null; target.addEventListener('pointerenter', function () { timer = setTimeout(function () { play(svg, cfg); }, HOVER_INTENT); }); target.addEventListener('pointerleave', function () { clearTimeout(timer); }); return; } if (!('IntersectionObserver' in window)) return play(svg, cfg); new IntersectionObserver(function (es, ob) { es.forEach(function (e) { if (e.isIntersecting) { play(svg, cfg); ob.disconnect(); } }); }, { threshold: .35 }).observe(svg); } function init() { document.querySelectorAll('svg[data-sign]').forEach(function (svg) { if (svg.dataset.signWired) return; svg.dataset.signWired = '1'; wire(svg); }); } window.cymWrite = function (svg, p, n) { if (svg.__cymWrite) draw(svg.__cymWrite, p, n || 0); }; document.readyState === 'loading' ? document.addEventListener('DOMContentLoaded', init) : init(); })();

Norbert Health