@turf/hex-grid - npm Package Compare versions

Comparing version 4.3.0 to 4.3.1

index.js

@@ -1,7 +0,8 @@
-var point = require('@turf/helpers').point;
-var polygon = require('@turf/helpers').polygon;
 var distance = require('@turf/distance');
-var featurecollection = require('@turf/helpers').featureCollection;
+var helpers = require('@turf/helpers');
+var point = helpers.point;
+var polygon = helpers.polygon;
+var featureCollection = helpers.featureCollection;
 
-//Precompute cosines and sines of angles used in hexagon creation
+// Precompute cosines and sines of angles used in hexagon creation
 // for performance gain
@@ -38,6 +39,14 @@ var cosines = [];
 module.exports = function hexGrid(bbox, cellSize, units, triangles) {
-    var xFraction = cellSize / (distance(point([bbox[0], bbox[1]]), point([bbox[2], bbox[1]]), units));
-    var cellWidth = xFraction * (bbox[2] - bbox[0]);
-    var yFraction = cellSize / (distance(point([bbox[0], bbox[1]]), point([bbox[0], bbox[3]]), units));
-    var cellHeight = yFraction * (bbox[3] - bbox[1]);
+    var west = bbox[0];
+    var south = bbox[1];
+    var east = bbox[2];
+    var north = bbox[3];
+    var centerY = (south + north) / 2;
+    var centerX = (west + east) / 2;
+
+    // https://github.com/Turfjs/turf/issues/758
+    var xFraction = cellSize / (distance(point([west, centerY]), point([east, centerY]), units));
+    var cellWidth = xFraction * (east - west);
+    var yFraction = cellSize / (distance(point([centerX, south]), point([centerX, north]), units));
+    var cellHeight = yFraction * (north - south);
     var radius = cellWidth / 2;
@@ -48,4 +57,4 @@
 
-    var box_width = bbox[2] - bbox[0];
-    var box_height = bbox[3] - bbox[1];
+    var box_width = east - west;
+    var box_height = north - south;
 
@@ -72,3 +81,3 @@ var x_interval = 3 / 4 * hex_width;
 
-    var fc = featurecollection([]);
+    var fc = featureCollection([]);
     for (var x = 0; x < x_count; x++) {
@@ -86,4 +95,4 @@ for (var y = 0; y <= y_count; y++) {
 
-            var center_x = x * x_interval + bbox[0] - x_adjust;
-            var center_y = y * y_interval + bbox[1] + y_adjust;
+            var center_x = x * x_interval + west - x_adjust;
+            var center_y = y * y_interval + south + y_adjust;
 
@@ -90,0 +99,0 @@ if (isOdd) {

package.json

 {
   "name": "@turf/hex-grid",
-  "version": "4.3.0",
+  "version": "4.3.1",
   "description": "turf hex-grid module",
@@ -29,6 +29,8 @@ "main": "index.js",
   "contributors": [
-    "jseppi",
-    "jvail",
-    "lyzidiamond",
-    "tmcw"
+    "James Seppi <@jseppi>",
+    "Morgan Herlocker <@morganherlocker>",
+    "Tom MacWright <@tmcw>",
+    "Jan Vaillant <@jvail>",
+    "Lyzi Diamond <@lyzidiamond>",
+    "Denis Carriere <@DenisCarriere>"
   ],
@@ -41,9 +43,4 @@ "license": "MIT",
   "devDependencies": {
-    "@turf/bbox-polygon": "^4.3.0",
-    "@turf/explode": "^4.3.0",
-    "@turf/inside": "^4.3.0",
     "@turf/truncate": "^4.3.0",
     "benchmark": "^2.1.4",
-    "eslint": "^3.15.0",
-    "eslint-config-mourner": "^2.0.1",
     "load-json-file": "^2.0.0",
@@ -50,0 +47,0 @@ "tape": "^4.6.3",

No alert changes

Improved metrics

Total package byte prevSize

9102

1.83%

Dev dependency count

5

-50%

Lines of code

128

6.67%

No dependency changes