83 lines
2.4 KiB
JavaScript
83 lines
2.4 KiB
JavaScript
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$('.button').each(function(e) {
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let duration = 3000,
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btn = $(this),
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svg = btn.find('svg'),
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svgPath = new Proxy({
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y: null,
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smoothing: null
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}, {
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set(target, key, value) {
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target[key] = value;
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if(target.y !== null && target.smoothing !== null) {
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svg.html(getPath(target.y, target.smoothing, null))
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}
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return true;
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},
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get(target, key) {
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return target[key];
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}
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});
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btn.css('--duration', duration);
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svgPath.y = 20;
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svgPath.smoothing = 0;
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btn.on('click', e => {
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if(!btn.hasClass('loading')) {
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btn.addClass('loading');
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TweenMax.to(svgPath, duration * .065 / 1000, {
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smoothing: .3
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});
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TweenMax.to(svgPath, duration * .265 / 1000, {
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y: 12,
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ease: Elastic.easeOut.config(1.12, .4)
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}).delay(duration * .065 / 1000);
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setTimeout(() => {
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svg.html(getPath(0, 0, [
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[3, 14],
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[8, 19],
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[21, 6]
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]));
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}, (duration / 2));
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}
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return false;
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});
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});
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function getPoint(point, i, a, smoothing) {
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let cp = (current, previous, next, reverse) => {
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let p = previous || current,
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n = next || current,
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o = {
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length: Math.sqrt(Math.pow(n[0] - p[0], 2) + Math.pow(n[1] - p[1], 2)),
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angle: Math.atan2(n[1] - p[1], n[0] - p[0])
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},
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angle = o.angle + (reverse ? Math.PI : 0),
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length = o.length * smoothing;
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return [current[0] + Math.cos(angle) * length, current[1] + Math.sin(angle) * length];
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},
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cps = cp(a[i - 1], a[i - 2], point, false),
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cpe = cp(point, a[i - 1], a[i + 1], true);
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return `C ${cps[0]},${cps[1]} ${cpe[0]},${cpe[1]} ${point[0]},${point[1]}`;
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}
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function getPath(update, smoothing, pointsNew) {
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let points = pointsNew ? pointsNew : [
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[4, 12],
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[12, update],
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[20, 12]
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],
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d = points.reduce((acc, point, i, a) => i === 0 ? `M ${point[0]},${point[1]}` : `${acc} ${getPoint(point, i, a, smoothing)}`, '');
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return `<path d="${d}" />`;
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}
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