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							- import windingLine from './windingLine.js';
 
- var EPSILON = 1e-8;
 
- function isAroundEqual(a, b) {
 
-     return Math.abs(a - b) < EPSILON;
 
- }
 
- export function contain(points, x, y) {
 
-     var w = 0;
 
-     var p = points[0];
 
-     if (!p) {
 
-         return false;
 
-     }
 
-     for (var i = 1; i < points.length; i++) {
 
-         var p2 = points[i];
 
-         w += windingLine(p[0], p[1], p2[0], p2[1], x, y);
 
-         p = p2;
 
-     }
 
-     var p0 = points[0];
 
-     if (!isAroundEqual(p[0], p0[0]) || !isAroundEqual(p[1], p0[1])) {
 
-         w += windingLine(p[0], p[1], p0[0], p0[1], x, y);
 
-     }
 
-     return w !== 0;
 
- }
 
 
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