reproject-bbox - npm Package Compare versions

Comparing version 0.5.0 to 0.6.0

package.json

 {
   "name": "reproject-bbox",
-  "version": "0.5.0",
+  "version": "0.6.0",
   "description": "Reproject a Bounding Box",
@@ -19,3 +19,3 @@ "main": "reproject-bbox.js",
     "f": "npm run format",
-    "format": "npx prettier --print-width=180 --write pluggable.js reproject-bbox.js test.*js",
+    "format": "npx prettier --print-width=180 --write pluggable.js reproject-bbox.js test.js test.mjs test.ts",
     "test:cjs": "node test.js",
@@ -51,3 +51,4 @@ "test:mjs": "node test.mjs",
   "devDependencies": {
-    "flug": "^2.3.1"
+    "bbox-fns": "^0.3.0",
+    "flug": "^2.5.0"
   },
@@ -54,0 +55,0 @@ "dependencies": {

pluggable.js

@@ -1,15 +0,8 @@
-function reprojectBoundingBoxPluggable({ bbox, reproject }) {
-  const [xmin, ymin, xmax, ymax] = bbox;
+const bboxArray = require("bbox-fns/bbox-array.js");
+const densePolygon = require("bbox-fns/dense-polygon.js");
 
-  const topleft = reproject([xmin, ymax]);
-  const topright = reproject([xmax, ymax]);
-  const bottomleft = reproject([xmin, ymin]);
-  const bottomright = reproject([xmax, ymin]);
-
-  const corners = [topleft, topright, bottomleft, bottomright];
-
-  const xs = corners.map((corner) => corner[0]);
-  const ys = corners.map((corner) => corner[1]);
-
-  return [Math.min(...xs), Math.min(...ys), Math.max(...xs), Math.max(...ys)];
+function reprojectBoundingBoxPluggable({ bbox, density, reproject }) {
+  const polygon = densePolygon(bbox, { density });
+  const ring = polygon[0];
+  return bboxArray(ring.map((pt) => reproject(pt)));
 }
@@ -16,0 +9,0 @@

README.md

@@ -28,2 +28,29 @@ # reproject-bbox
 # advanced usage
+## density
+You can increase the accuracy of your reprojected bounding box by increasing the point density.
+Density is the number of points that you would like to add to each side of the bounding box.
+If you pass in an array of two numbers, you can control how many points to add along the x and y-axis.
+```js
+import reprojectBoundingBox from "reproject-bbox";
+
+const bbox = [ -2316545, -1971615, 1015455, 1512385 ];
+reprojectBoundingBox({
+  bbox,
+  density: 100, // add 100 points to each side of the box before reprojecting
+  from: 6623,
+  to: 4326
+});
+
+reprojectBoundingBox({
+  bbox,
+
+  // add 11 points along the x-axis (11 to top side and 11 to bottom side)
+  // and 99 points along the y-axis (99 to left side and 99 to right side)
+  density: [11, 99], 
+
+  from: 6623,
+  to: 4326
+});
+```
+
 ## proj4-fully-loaded dependency
@@ -30,0 +57,0 @@ This library depends on [proj4-fully-loaded](https://github.com/DanielJDufour/proj4-fully-loaded).

reproject-bbox.d.ts

 export default function reprojectBoundingBox({
   bbox,
+  density,
   from,
@@ -8,2 +9,3 @@ proj4: _proj4,
   bbox: [number, number, number, number] | Readonly<[number, number, number, number]>,
+  density?: number | undefined,
   from: number | string,
@@ -10,0 +12,0 @@ proj4?: any,

reproject-bbox.js

@@ -10,3 +10,3 @@ const merge = require("proj4-merge");
 
-function reprojectBoundingBox({ bbox, from, proj4: _proj4, to }) {
+function reprojectBoundingBox({ bbox, density, from, proj4: _proj4, to }) {
   if (typeof from === "number") from = "EPSG:" + from;
@@ -23,3 +23,3 @@ if (typeof to === "number") to = "EPSG:" + to;
 
-  return reprojectBoundingBoxPluggable({ bbox, reproject: fwd });
+  return reprojectBoundingBoxPluggable({ bbox, density, reproject: fwd });
 }
@@ -26,0 +26,0 @@

No alert changes

Improved metrics

Total package byte prevSize

422673

0.66%

Lines of code

7495

0.89%

Number of lines in readme file

73

58.7%

Worsened metrics

Dev dependency count

2

100%

No dependency changes