| 1 | import windingLine from './windingLine.js';
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| 2 | var EPSILON = 1e-8;
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| 3 | function isAroundEqual(a, b) {
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| 4 | return Math.abs(a - b) < EPSILON;
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| 5 | }
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| 6 | export function contain(points, x, y) {
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| 7 | var w = 0;
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| 8 | var p = points[0];
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| 9 | if (!p) {
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| 10 | return false;
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| 11 | }
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| 12 | for (var i = 1; i < points.length; i++) {
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| 13 | var p2 = points[i];
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| 14 | w += windingLine(p[0], p[1], p2[0], p2[1], x, y);
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| 15 | p = p2;
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| 16 | }
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| 17 | var p0 = points[0];
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| 18 | if (!isAroundEqual(p[0], p0[0]) || !isAroundEqual(p[1], p0[1])) {
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| 19 | w += windingLine(p[0], p[1], p0[0], p0[1], x, y);
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| 20 | }
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| 21 | return w !== 0;
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| 22 | }
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