Function inside

d3-3.2.8/d3.js:2928–2931

(point)

        }
      };
      function inside(point) {
        var a = corner(point, -1), i = insidePolygon([ a === 0 || a === 3 ? x0 : x1, a > 1 ? y1 : y0 ]);
        return i;
      }
      function insidePolygon(p) {
        var wn = 0, n = polygon.length, y = p[1];
        for (var i = 0; i < n; ++i) {