forked from enviPath/enviPy
447 lines
14 KiB
HTML
447 lines
14 KiB
HTML
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<title>Code coverage report for src/a2c.js</title>
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<h1>
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<a href="../index.html">all files</a> / <a href="index.html">src/</a> a2c.js
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<span class="strong">94.37% </span>
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<span class="cline-any cline-neutral"> </span></td><td class="text"><pre class="prettyprint lang-js">// Borrowed from https://github.com/PPvG/svg-path/blob/master/lib/Path.js#L208
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// that were borrowed from https://github.com/DmitryBaranovskiy/raphael/blob/4d97d4ff5350bb949b88e6d78b877f76ea8b5e24/raphael.js#L2216-L2304
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// (MIT licensed; http://raphaeljs.com/license.html).
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module.exports = a2c;
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// LOL
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var PI = Math.PI;
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var math = Math;
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var abs = Math.abs;
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var split = "split";
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var concat = "concat";
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var apply = "apply";
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var has = "hasOwnProperty";
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function a2c(x1, y1, rx, ry, angle, large_arc_flag, sweep_flag, x2, y2, recursive) {
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// for more information of where this math came from visit:
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// http://www.w3.org/TR/SVG11/implnote.html#ArcImplementationNotes
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var _120 = PI * 120 / 180,
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rad = PI / 180 * (+angle || 0),
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res = [],
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xy,
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rotate = cacher(function (x, y, rad) {
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var X = x * math.cos(rad) - y * math.sin(rad),
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Y = x * math.sin(rad) + y * math.cos(rad);
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return {x: X, y: Y};
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});
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if (!recursive) {
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xy = rotate(x1, y1, -rad);
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x1 = xy.x;
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y1 = xy.y;
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xy = rotate(x2, y2, -rad);
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x2 = xy.x;
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y2 = xy.y;
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var cos = math.cos(PI / 180 * angle),
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sin = math.sin(PI / 180 * angle),
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x = (x1 - x2) / 2,
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y = (y1 - y2) / 2;
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var h = (x * x) / (rx * rx) + (y * y) / (ry * ry);
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<span class="missing-if-branch" title="if path not taken" >I</span>if (h > 1) {
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<span class="cstat-no" title="statement not covered" > h = math.sqrt(h);</span>
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<span class="cstat-no" title="statement not covered" > rx = h * rx;</span>
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<span class="cstat-no" title="statement not covered" > ry = h * ry;</span>
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}
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var rx2 = rx * rx,
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ry2 = ry * ry,
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k = (large_arc_flag == sweep_flag ? -1 : 1) *
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math.sqrt(abs((rx2 * ry2 - rx2 * y * y - ry2 * x * x) / (rx2 * y * y + ry2 * x * x))),
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cx = k * rx * y / ry + (x1 + x2) / 2,
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cy = k * -ry * x / rx + (y1 + y2) / 2,
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f1 = math.asin(((y1 - cy) / ry).toFixed(9)),
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f2 = math.asin(((y2 - cy) / ry).toFixed(9));
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f1 = x1 < cx ? PI - f1 : f1;
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f2 = x2 < cx ? <span class="branch-0 cbranch-no" title="branch not covered" >PI - f2 </span>: f2;
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f1 < 0 && (f1 = PI * 2 + f1);
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f2 < 0 && (<span class="branch-1 cbranch-no" title="branch not covered" >f2 = PI * 2 + f2)</span>;
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if (sweep_flag && f1 > f2) {
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f1 = f1 - PI * 2;
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}
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<span class="missing-if-branch" title="if path not taken" >I</span>if (!sweep_flag && f2 > f1) {
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<span class="cstat-no" title="statement not covered" > f2 = f2 - PI * 2;</span>
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}
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} else {
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f1 = recursive[0];
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f2 = recursive[1];
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cx = recursive[2];
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cy = recursive[3];
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}
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var df = f2 - f1;
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if (abs(df) > _120) {
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var f2old = f2,
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x2old = x2,
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y2old = y2;
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f2 = f1 + _120 * (sweep_flag && f2 > f1 ? 1 : -1);
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x2 = cx + rx * math.cos(f2);
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y2 = cy + ry * math.sin(f2);
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res = a2c(x2, y2, rx, ry, angle, 0, sweep_flag, x2old, y2old, [f2, f2old, cx, cy]);
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}
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df = f2 - f1;
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var c1 = math.cos(f1),
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s1 = math.sin(f1),
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c2 = math.cos(f2),
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s2 = math.sin(f2),
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t = math.tan(df / 4),
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hx = 4 / 3 * rx * t,
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hy = 4 / 3 * ry * t,
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m1 = [x1, y1],
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m2 = [x1 + hx * s1, y1 - hy * c1],
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m3 = [x2 + hx * s2, y2 - hy * c2],
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m4 = [x2, y2];
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m2[0] = 2 * m1[0] - m2[0];
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m2[1] = 2 * m1[1] - m2[1];
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if (recursive) {
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return [m2, m3, m4][concat](res);
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} else {
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res = [m2, m3, m4][concat](res).join()[split](",");
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var newres = [];
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for (var i = 0, ii = res.length; i < ii; i++) {
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newres[i] = i % 2 ? rotate(res[i - 1], res[i], rad).y : rotate(res[i], res[i + 1], rad).x;
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}
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return newres;
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}
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}
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function cacher(f, scope, postprocessor) {
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function newf() {
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var arg = Array.prototype.slice.call(arguments, 0),
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args = arg.join("\u2400"),
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cache = newf.cache = newf.cache || {},
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count = newf.count = newf.count || [];
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if (cache[has](args)) {
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repush(count, args);
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return postprocessor ? <span class="branch-0 cbranch-no" title="branch not covered" >postprocessor(cache[args]) </span>: cache[args];
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}
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count.length >= 1e3 && <span class="branch-1 cbranch-no" title="branch not covered" >delete cache[count.shift()];</span>
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count.push(args);
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cache[args] = f[apply](scope, arg);
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return postprocessor ? <span class="branch-0 cbranch-no" title="branch not covered" >postprocessor(cache[args]) </span>: cache[args];
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}
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return newf;
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}
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function repush(array, item) {
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for (var i = 0, ii = array.length; i < ii; i++) if (array[i] === item) {
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return array.push(array.splice(i, 1)[0]);
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}
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}
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</pre></td></tr>
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</table></pre>
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<div class='footer quiet pad2 space-top1 center small'>
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Code coverage
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generated by <a href="http://istanbul-js.org/" target="_blank">istanbul</a> at Mon Nov 07 2016 15:21:32 GMT+0100 (CET)
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