geojson-vt - npm Package Compare versions

Comparing version 2.1.6 to 2.1.7

package.json

 {
   "name": "geojson-vt",
-  "version": "2.1.6",
+  "version": "2.1.7",
   "description": "Slice GeoJSON data into vector tiles efficiently",
@@ -23,2 +23,3 @@ "homepage": "https://github.com/mapbox/geojson-vt",
     "eslint": "^1.5.0",
+    "eslint-config-mourner": "^1.0.0",
     "faucet": "0.0.1",
@@ -25,0 +26,0 @@ "istanbul": "^0.3.20",

README.md

@@ -79,2 +79,6 @@ ## geojson-vt — GeoJSON Vector Tiles
 
+##### 2.1.7 (Oct 16, 2015)
+
+- Expose transform methods in a separate file (`transform.js`).
+
 ##### 2.1.6 (Sep 22, 2015)
@@ -81,0 +85,0 @@

src/index.js

@@ -5,6 +5,7 @@ 'use strict';
 
-var convert = require('./convert'), // GeoJSON conversion and preprocessing
-    clip = require('./clip'),       // stripe clipping algorithm
-    wrap = require('./wrap'),       // date line processing
-    createTile = require('./tile'); // final simplified tile generation
+var convert = require('./convert'),     // GeoJSON conversion and preprocessing
+    transform = require('./transform'), // coordinate transformation
+    clip = require('./clip'),           // stripe clipping algorithm
+    wrap = require('./wrap'),           // date line processing
+    createTile = require('./tile');     // final simplified tile generation
 
@@ -162,3 +163,3 @@
     var id = toID(z, x, y);
-    if (this.tiles[id]) return transformTile(this.tiles[id], extent);
+    if (this.tiles[id]) return transform.tile(this.tiles[id], extent);
 
@@ -185,3 +186,3 @@ if (debug > 1) console.log('drilling down to z%d-%d-%d', z, x, y);
     if (parent.source) {
-        if (isClippedSquare(parent, extent, options.buffer)) return transformTile(parent, extent);
+        if (isClippedSquare(parent, extent, options.buffer)) return transform.tile(parent, extent);
 
@@ -195,40 +196,5 @@ if (debug > 1) console.time('drilling down');
 
-    return transformTile(this.tiles[id], extent);
+    return transform.tile(this.tiles[id], extent);
 };
 
-function transformTile(tile, extent) {
-    if (tile.transformed) return tile;
-
-    var z2 = tile.z2,
-        tx = tile.x,
-        ty = tile.y,
-        i, j, k;
-
-    for (i = 0; i < tile.features.length; i++) {
-        var feature = tile.features[i],
-            geom = feature.geometry,
-            type = feature.type;
-
-        if (type === 1) {
-            for (j = 0; j < geom.length; j++) geom[j] = transformPoint(geom[j], extent, z2, tx, ty);
-
-        } else {
-            for (j = 0; j < geom.length; j++) {
-                var ring = geom[j];
-                for (k = 0; k < ring.length; k++) ring[k] = transformPoint(ring[k], extent, z2, tx, ty);
-            }
-        }
-    }
-
-    tile.transformed = true;
-
-    return tile;
-}
-
-function transformPoint(p, extent, z2, tx, ty) {
-    var x = Math.round(extent * (p[0] * z2 - tx)),
-        y = Math.round(extent * (p[1] * z2 - ty));
-    return [x, y];
-}
-
 function toID(z, x, y) {
@@ -263,3 +229,3 @@ return (((1 << z) * y + x) * 32) + z;
     for (var i = 0; i < len; i++) {
-        var p = transformPoint(feature.geometry[0][i], extent, tile.z2, tile.x, tile.y);
+        var p = transform.point(feature.geometry[0][i], extent, tile.z2, tile.x, tile.y);
         if ((p[0] !== -buffer && p[0] !== extent + buffer) ||
@@ -266,0 +232,0 @@ (p[1] !== -buffer && p[1] !== extent + buffer)) return false;

No alert changes

Improved metrics

Total package byte prevSize

1809110

increased by0.18%

Number of package files

35

increased by2.94%

Lines of code

8065

increased by0.07%

Number of lines in readme file

134

increased by3.08%

Worsened metrics

Dev dependency count

10

increased by11.11%

No dependency changes