fix bleeding #30

Author: Fil

src/pointEqual.js

@@ -1,5 +1,3 @@
-import {abs, epsilon} from "./math.js";
-
-export default function(a, b) {
-  return abs(a[0] - b[0]) < epsilon && abs(a[1] - b[1]) < epsilon;
-}
+export default function pointEqual(a, b) {
+  return a && b && a[0] === b[0] && a[1] === b[1];
+}

src/polyhedral/index.js

@@ -2,6 +2,7 @@ import {geoBounds as bounds, geoCentroid as centroid, geoInterpolate as interpol
 import {default as clipPolygon} from "../clip/polygon.js";
 import {abs, degrees, epsilon, radians} from "../math.js";
 import {default as matrix, multiply, inverse} from "./matrix.js";
+import pointEqual from "../pointEqual.js";
 
 // Creates a polyhedral projection.
 //  * tree: a spanning tree of polygon faces.  Nodes are automatically
@@ -132,11 +133,6 @@ function outline(stream, node, parent) {
   }
 }
 
-// Tests equality of two spherical points.
-function pointEqual(a, b) {
-  return a && b && a[0] === b[0] && a[1] === b[1];
-}
-
 // Finds a shared edge given two clockwise polygons.
 function sharedEdge(a, b) {
   var x, y, n = a.length, found = null;