@terraformer/spatial - npm Package Compare versions

Comparing version 2.0.2 to 2.0.5

dist/t-spatial.esm.js

 /* @preserve
-* @terraformer/spatial - v2.0.2 - MIT
+* @terraformer/spatial - v2.0.4 - MIT
 * Copyright (c) 2012-2020 Environmental Systems Research Institute, Inc.
-* Thu Apr 16 2020 00:21:36 GMT-0700 (Pacific Daylight Time)
+* Sun May 17 2020 12:38:50 GMT-0700 (Pacific Daylight Time)
 */
@@ -82,6 +82,6 @@ /* Copyright (c) 2012-2019 Environmental Systems Research Institute, Inc.
 const MercatorCRS = {
-  'type': 'link',
-  'properties': {
-    'href': 'http://spatialreference.org/ref/sr-org/6928/ogcwkt/',
-    'type': 'ogcwkt'
+  type: 'link',
+  properties: {
+    href: 'http://spatialreference.org/ref/sr-org/6928/ogcwkt/',
+    type: 'ogcwkt'
   }
@@ -91,6 +91,6 @@ };
 const GeographicCRS = {
-  'type': 'link',
-  'properties': {
-    'href': 'http://spatialreference.org/ref/epsg/4326/ogcwkt/',
-    'type': 'ogcwkt'
+  type: 'link',
+  properties: {
+    href: 'http://spatialreference.org/ref/epsg/4326/ogcwkt/',
+    type: 'ogcwkt'
   }
@@ -173,3 +173,3 @@ };
   let q = p;
-  for (let r in points) {
+  for (const r in points) {
     const t = turn(p, q, points[r]);
@@ -194,3 +194,3 @@ if (t === -1 || (t === 0 && euclideanDistance(p, points[r]) > euclideanDistance(p, q))) {
   // Returns the points on the convex hull of points in CCW order.
-  let hull = [points.sort(compSort)[0]];
+  const hull = [points.sort(compSort)[0]];
 
@@ -212,6 +212,6 @@ for (var p = 0; p < hull.length; p++) {
 const closedPolygon = (coordinates) => {
-  let outer = [];
+  const outer = [];
 
   for (let i = 0; i < coordinates.length; i++) {
-    let inner = coordinates[i].slice();
+    const inner = coordinates[i].slice();
     if (pointsEqual(inner[0], inner[inner.length - 1]) === false) {
@@ -465,3 +465,3 @@ inner.push(inner[0]);
 const calculateBoundsForFeatureCollection = (featureCollection) => {
-  let extents = [];
+  const extents = [];
   for (let i = featureCollection.features.length - 1; i >= 0; i--) {
@@ -480,3 +480,3 @@ const extent = calculateBounds(featureCollection.features[i].geometry);
 const calculateBoundsForGeometryCollection = (geometryCollection) => {
-  let extents = [];
+  const extents = [];
 
@@ -705,4 +705,4 @@ for (let i = geometryCollection.geometries.length - 1; i >= 0; i--) {
         const ls = {
-          'type': 'LineString',
-          'coordinates': geoJSON.coordinates[i]
+          type: 'LineString',
+          coordinates: geoJSON.coordinates[i]
         };
@@ -786,3 +786,3 @@ if (within(ls, comparisonGeoJSON) === false) {
       for (i = 0; i < geoJSON.coordinates.length; i++) {
-        const ls = { 'type': 'LineString', 'coordinates': geoJSON.coordinates[i] };
+        const ls = { type: 'LineString', coordinates: geoJSON.coordinates[i] };
 
@@ -839,2 +839,8 @@ if (within(ls, comparisonGeoJSON) === false) {
 
+const VINCENTY = {
+  a: 6378137,
+  b: 6356752.3142,
+  f: 1 / 298.257223563
+};
+
 const toGeographic = (geojson) => applyConverter(geojson, positionToGeographic);
@@ -852,3 +858,3 @@
     type: 'Feature',
-    geometry: createCircle(center, rad, steps),
+    geometry: createGeodesicCircle(center, rad, steps),
     properties: {
@@ -862,4 +868,6 @@ radius: rad,
 
-const createCircle = (center, radius, interpolate) => {
-  const mercatorPosition = positionToMercator(center);
+/* cribbed from
+  http://stackoverflow.com/questions/24145205/writing-a-function-to-convert-a-circle-to-a-polygon-using-leaflet-js
+*/
+const createGeodesicCircle = (center, radius, interpolate) => {
   const steps = interpolate || 64;
@@ -870,11 +878,55 @@ const polygon = {
   };
-  for (var i = 1; i <= steps; i++) {
-    const radians = i * (360 / steps) * Math.PI / 180;
-    polygon.coordinates[0].push([mercatorPosition[0] + radius * Math.cos(radians), mercatorPosition[1] + radius * Math.sin(radians)]);
+
+  let angle;
+  for (var i = 0; i < steps; i++) {
+    angle = (i * 360 / steps);
+    polygon.coordinates[0].push(destinationVincenty(center, angle, radius));
   }
+
   polygon.coordinates = closedPolygon(polygon.coordinates);
 
-  return toGeographic(polygon);
+  return polygon;
 };
 
+const destinationVincenty = (coords, brng, dist) => {
+  var cos2SigmaM, sinSigma, cosSigma, deltaSigma;
+  var a = VINCENTY.a; var b = VINCENTY.b; var f = VINCENTY.f;
+  var lon1 = coords[0];
+  var lat1 = coords[1];
+  var s = dist;
+  var pi = Math.PI;
+  var alpha1 = brng * pi / 180; // converts brng degrees to radius
+  var sinAlpha1 = Math.sin(alpha1);
+  var cosAlpha1 = Math.cos(alpha1);
+  var tanU1 = (1 - f) * Math.tan(lat1 * pi / 180 /* converts lat1 degrees to radius */);
+  var cosU1 = 1 / Math.sqrt((1 + tanU1 * tanU1)); var sinU1 = tanU1 * cosU1;
+  var sigma1 = Math.atan2(tanU1, cosAlpha1);
+  var sinAlpha = cosU1 * sinAlpha1;
+  var cosSqAlpha = 1 - sinAlpha * sinAlpha;
+  var uSq = cosSqAlpha * (a * a - b * b) / (b * b);
+  var A = 1 + uSq / 16384 * (4096 + uSq * (-768 + uSq * (320 - 175 * uSq)));
+  var B = uSq / 1024 * (256 + uSq * (-128 + uSq * (74 - 47 * uSq)));
+  var sigma = s / (b * A); var sigmaP = 2 * Math.PI;
+  while (Math.abs(sigma - sigmaP) > 1e-12) {
+    cos2SigmaM = Math.cos(2 * sigma1 + sigma);
+    sinSigma = Math.sin(sigma);
+    cosSigma = Math.cos(sigma);
+    deltaSigma = B * sinSigma * (cos2SigmaM + B / 4 * (cosSigma * (-1 + 2 * cos2SigmaM * cos2SigmaM) -
+          B / 6 * cos2SigmaM * (-3 + 4 * sinSigma * sinSigma) * (-3 + 4 * cos2SigmaM * cos2SigmaM)));
+    sigmaP = sigma;
+    sigma = s / (b * A) + deltaSigma;
+  }
+  var tmp = sinU1 * sinSigma - cosU1 * cosSigma * cosAlpha1;
+  var lat2 = Math.atan2(sinU1 * cosSigma + cosU1 * sinSigma * cosAlpha1,
+    (1 - f) * Math.sqrt(sinAlpha * sinAlpha + tmp * tmp));
+  var lambda = Math.atan2(sinSigma * sinAlpha1, cosU1 * cosSigma - sinU1 * sinSigma * cosAlpha1);
+  var C = f / 16 * cosSqAlpha * (4 + f * (4 - 3 * cosSqAlpha));
+  var lam = lambda - (1 - C) * f * sinAlpha *
+      (sigma + C * sinSigma * (cos2SigmaM + C * cosSigma * (-1 + 2 * cos2SigmaM * cos2SigmaM)));
+  var lamFunc = lon1 + (lam * 180 / pi); // converts lam radius to degrees
+  var lat2a = lat2 * 180 / pi; // converts lat2a radius to degrees
+
+  return [lamFunc, lat2a];
+};
+
 /* Copyright (c) 2012-2019 Environmental Systems Research Institute, Inc.
@@ -886,3 +938,3 @@ * Apache-2.0 */
  * @function
- * @param {object} GeoJSON - The input [GeoJSON](https://tools.ietf.org/html/rfc7946) Geometry, Feature, GeometryCollection or ReatureCollection.
+ * @param {object} GeoJSON - The input [GeoJSON](https://tools.ietf.org/html/rfc7946) Geometry, Feature, GeometryCollection or FeatureCollection.
  * @return {Object} Object in the form { x, y, w, h }.
@@ -913,3 +965,3 @@ * ```js
  * @function
- * @param {object} GeoJSON - The input [GeoJSON](https://tools.ietf.org/html/rfc7946) Geometry, Feature, GeometryCollection or ReatureCollection.
+ * @param {object} GeoJSON - The input [GeoJSON](https://tools.ietf.org/html/rfc7946) Geometry, Feature, GeometryCollection or FeatureCollection.
  * @return {object} GeoJSON
@@ -916,0 +968,0 @@ * ```js

dist/t-spatial.umd.js

 /* @preserve
-* @terraformer/spatial - v2.0.2 - MIT
+* @terraformer/spatial - v2.0.4 - MIT
 * Copyright (c) 2012-2020 Environmental Systems Research Institute, Inc.
-* Thu Apr 16 2020 00:21:35 GMT-0700 (Pacific Daylight Time)
+* Sun May 17 2020 12:38:49 GMT-0700 (Pacific Daylight Time)
 */
@@ -88,6 +88,6 @@ (function (global, factory) {
   const MercatorCRS = {
-    'type': 'link',
-    'properties': {
-      'href': 'http://spatialreference.org/ref/sr-org/6928/ogcwkt/',
-      'type': 'ogcwkt'
+    type: 'link',
+    properties: {
+      href: 'http://spatialreference.org/ref/sr-org/6928/ogcwkt/',
+      type: 'ogcwkt'
     }
@@ -97,6 +97,6 @@ };
   const GeographicCRS = {
-    'type': 'link',
-    'properties': {
-      'href': 'http://spatialreference.org/ref/epsg/4326/ogcwkt/',
-      'type': 'ogcwkt'
+    type: 'link',
+    properties: {
+      href: 'http://spatialreference.org/ref/epsg/4326/ogcwkt/',
+      type: 'ogcwkt'
     }
@@ -179,3 +179,3 @@ };
     let q = p;
-    for (let r in points) {
+    for (const r in points) {
       const t = turn(p, q, points[r]);
@@ -200,3 +200,3 @@ if (t === -1 || (t === 0 && euclideanDistance(p, points[r]) > euclideanDistance(p, q))) {
     // Returns the points on the convex hull of points in CCW order.
-    let hull = [points.sort(compSort)[0]];
+    const hull = [points.sort(compSort)[0]];
 
@@ -218,6 +218,6 @@ for (var p = 0; p < hull.length; p++) {
   const closedPolygon = (coordinates) => {
-    let outer = [];
+    const outer = [];
 
     for (let i = 0; i < coordinates.length; i++) {
-      let inner = coordinates[i].slice();
+      const inner = coordinates[i].slice();
       if (pointsEqual(inner[0], inner[inner.length - 1]) === false) {
@@ -471,3 +471,3 @@ inner.push(inner[0]);
   const calculateBoundsForFeatureCollection = (featureCollection) => {
-    let extents = [];
+    const extents = [];
     for (let i = featureCollection.features.length - 1; i >= 0; i--) {
@@ -486,3 +486,3 @@ const extent = calculateBounds(featureCollection.features[i].geometry);
   const calculateBoundsForGeometryCollection = (geometryCollection) => {
-    let extents = [];
+    const extents = [];
 
@@ -711,4 +711,4 @@ for (let i = geometryCollection.geometries.length - 1; i >= 0; i--) {
           const ls = {
-            'type': 'LineString',
-            'coordinates': geoJSON.coordinates[i]
+            type: 'LineString',
+            coordinates: geoJSON.coordinates[i]
           };
@@ -792,3 +792,3 @@ if (within(ls, comparisonGeoJSON) === false) {
         for (i = 0; i < geoJSON.coordinates.length; i++) {
-          const ls = { 'type': 'LineString', 'coordinates': geoJSON.coordinates[i] };
+          const ls = { type: 'LineString', coordinates: geoJSON.coordinates[i] };
 
@@ -845,2 +845,8 @@ if (within(ls, comparisonGeoJSON) === false) {
 
+  const VINCENTY = {
+    a: 6378137,
+    b: 6356752.3142,
+    f: 1 / 298.257223563
+  };
+
   const toGeographic = (geojson) => applyConverter(geojson, positionToGeographic);
@@ -858,3 +864,3 @@
       type: 'Feature',
-      geometry: createCircle(center, rad, steps),
+      geometry: createGeodesicCircle(center, rad, steps),
       properties: {
@@ -868,4 +874,6 @@ radius: rad,
 
-  const createCircle = (center, radius, interpolate) => {
-    const mercatorPosition = positionToMercator(center);
+  /* cribbed from
+    http://stackoverflow.com/questions/24145205/writing-a-function-to-convert-a-circle-to-a-polygon-using-leaflet-js
+  */
+  const createGeodesicCircle = (center, radius, interpolate) => {
     const steps = interpolate || 64;
@@ -876,11 +884,55 @@ const polygon = {
     };
-    for (var i = 1; i <= steps; i++) {
-      const radians = i * (360 / steps) * Math.PI / 180;
-      polygon.coordinates[0].push([mercatorPosition[0] + radius * Math.cos(radians), mercatorPosition[1] + radius * Math.sin(radians)]);
+
+    let angle;
+    for (var i = 0; i < steps; i++) {
+      angle = (i * 360 / steps);
+      polygon.coordinates[0].push(destinationVincenty(center, angle, radius));
     }
+
     polygon.coordinates = closedPolygon(polygon.coordinates);
 
-    return toGeographic(polygon);
+    return polygon;
   };
 
+  const destinationVincenty = (coords, brng, dist) => {
+    var cos2SigmaM, sinSigma, cosSigma, deltaSigma;
+    var a = VINCENTY.a; var b = VINCENTY.b; var f = VINCENTY.f;
+    var lon1 = coords[0];
+    var lat1 = coords[1];
+    var s = dist;
+    var pi = Math.PI;
+    var alpha1 = brng * pi / 180; // converts brng degrees to radius
+    var sinAlpha1 = Math.sin(alpha1);
+    var cosAlpha1 = Math.cos(alpha1);
+    var tanU1 = (1 - f) * Math.tan(lat1 * pi / 180 /* converts lat1 degrees to radius */);
+    var cosU1 = 1 / Math.sqrt((1 + tanU1 * tanU1)); var sinU1 = tanU1 * cosU1;
+    var sigma1 = Math.atan2(tanU1, cosAlpha1);
+    var sinAlpha = cosU1 * sinAlpha1;
+    var cosSqAlpha = 1 - sinAlpha * sinAlpha;
+    var uSq = cosSqAlpha * (a * a - b * b) / (b * b);
+    var A = 1 + uSq / 16384 * (4096 + uSq * (-768 + uSq * (320 - 175 * uSq)));
+    var B = uSq / 1024 * (256 + uSq * (-128 + uSq * (74 - 47 * uSq)));
+    var sigma = s / (b * A); var sigmaP = 2 * Math.PI;
+    while (Math.abs(sigma - sigmaP) > 1e-12) {
+      cos2SigmaM = Math.cos(2 * sigma1 + sigma);
+      sinSigma = Math.sin(sigma);
+      cosSigma = Math.cos(sigma);
+      deltaSigma = B * sinSigma * (cos2SigmaM + B / 4 * (cosSigma * (-1 + 2 * cos2SigmaM * cos2SigmaM) -
+            B / 6 * cos2SigmaM * (-3 + 4 * sinSigma * sinSigma) * (-3 + 4 * cos2SigmaM * cos2SigmaM)));
+      sigmaP = sigma;
+      sigma = s / (b * A) + deltaSigma;
+    }
+    var tmp = sinU1 * sinSigma - cosU1 * cosSigma * cosAlpha1;
+    var lat2 = Math.atan2(sinU1 * cosSigma + cosU1 * sinSigma * cosAlpha1,
+      (1 - f) * Math.sqrt(sinAlpha * sinAlpha + tmp * tmp));
+    var lambda = Math.atan2(sinSigma * sinAlpha1, cosU1 * cosSigma - sinU1 * sinSigma * cosAlpha1);
+    var C = f / 16 * cosSqAlpha * (4 + f * (4 - 3 * cosSqAlpha));
+    var lam = lambda - (1 - C) * f * sinAlpha *
+        (sigma + C * sinSigma * (cos2SigmaM + C * cosSigma * (-1 + 2 * cos2SigmaM * cos2SigmaM)));
+    var lamFunc = lon1 + (lam * 180 / pi); // converts lam radius to degrees
+    var lat2a = lat2 * 180 / pi; // converts lat2a radius to degrees
+
+    return [lamFunc, lat2a];
+  };
+
   /* Copyright (c) 2012-2019 Environmental Systems Research Institute, Inc.
@@ -892,3 +944,3 @@ * Apache-2.0 */
    * @function
-   * @param {object} GeoJSON - The input [GeoJSON](https://tools.ietf.org/html/rfc7946) Geometry, Feature, GeometryCollection or ReatureCollection.
+   * @param {object} GeoJSON - The input [GeoJSON](https://tools.ietf.org/html/rfc7946) Geometry, Feature, GeometryCollection or FeatureCollection.
    * @return {Object} Object in the form { x, y, w, h }.
@@ -919,3 +971,3 @@ * ```js
    * @function
-   * @param {object} GeoJSON - The input [GeoJSON](https://tools.ietf.org/html/rfc7946) Geometry, Feature, GeometryCollection or ReatureCollection.
+   * @param {object} GeoJSON - The input [GeoJSON](https://tools.ietf.org/html/rfc7946) Geometry, Feature, GeometryCollection or FeatureCollection.
    * @return {object} GeoJSON
@@ -922,0 +974,0 @@ * ```js

package.json

 {
   "name": "@terraformer/spatial",
   "description": "Spatial predicates for GeoJSON.",
-  "version": "2.0.2",
+  "version": "2.0.5",
   "author": "Patrick Arlt <[e-mail]>",
@@ -39,4 +39,3 @@ "bugs": {
     "build": "rollup -c ../../rollup.umd.config.js && rollup -c ../../rollup.esm.config.js",
-    "doc": "jsdoc2md --files src/index.js --template README.hbs > README.md",
-    "prepare": "npm run build"
+    "doc": "jsdoc2md --files src/index.js --template README.hbs > README.md"
   },
@@ -46,3 +45,3 @@ "publishConfig": {
   },
-  "gitHead": "70ecb3026d4aa20e6ff39da6bc4e74a75ba90bd9"
+  "gitHead": "9f19918eb640d4c8817da255555a9f525442f3f0"
 }

README.md

@@ -29,7 +29,11 @@ # @terraformer/spatial
 * [Terraformer](#module_Terraformer)
+    * [.MercatorCRS](#module_Terraformer.MercatorCRS)
+    * [.GeographicCRS](#module_Terraformer.GeographicCRS)
     * [.calculateBounds(GeoJSON)](#module_Terraformer.calculateBounds) ⇒ <code>Array.&lt;Number&gt;</code>
     * [.calculateEnvelope(GeoJSON)](#module_Terraformer.calculateEnvelope) ⇒ <code>Object</code>
     * [.positionToGeographic(CoordinatePair)](#module_Terraformer.positionToGeographic) ⇒ <code>Array.&lt;Number, Number&gt;</code>
+    * [.positionToMercator(CoordinatePair)](#module_Terraformer.positionToMercator) ⇒ <code>Array.&lt;Number, Number&gt;</code>
     * [.toMercator(GeoJSON)](#module_Terraformer.toMercator) ⇒ <code>object</code>
     * [.convexHull(GeoJSON)](#module_Terraformer.convexHull) ⇒ <code>Array.&lt;Coordinates&gt;</code>
+    * [.isConvex(GeoJSON)](#module_Terraformer.isConvex) ⇒ <code>Boolean</code>
     * [.polygonContainsPoint(GeoJSON, GeoJSON)](#module_Terraformer.polygonContainsPoint) ⇒ <code>Boolean</code>
@@ -41,2 +45,14 @@ * [.within(GeoJSON, GeoJSON)](#module_Terraformer.within) ⇒ <code>Boolean</code>
 
+<a name="module_Terraformer.MercatorCRS"></a>
+
+### Terraformer.MercatorCRS
+WKID [3857](https://epsg.io/3857)
+
+**Kind**: static constant of [<code>Terraformer</code>](#module_Terraformer)  
+<a name="module_Terraformer.GeographicCRS"></a>
+
+### Terraformer.GeographicCRS
+WKID [4326](https://epsg.io/4326)
+
+**Kind**: static constant of [<code>Terraformer</code>](#module_Terraformer)  
 <a name="module_Terraformer.calculateBounds"></a>
@@ -62,3 +78,3 @@
 | --- | --- | --- |
-| GeoJSON | <code>object</code> | The input [GeoJSON](https://tools.ietf.org/html/rfc7946) Geometry, Feature, GeometryCollection or ReatureCollection. |
+| GeoJSON | <code>object</code> | The input [GeoJSON](https://tools.ietf.org/html/rfc7946) Geometry, Feature, GeometryCollection or FeatureCollection. |
 
@@ -85,3 +101,3 @@ <a name="module_Terraformer.calculateEnvelope"></a>
 | --- | --- | --- |
-| GeoJSON | <code>object</code> | The input [GeoJSON](https://tools.ietf.org/html/rfc7946) Geometry, Feature, GeometryCollection or ReatureCollection. |
+| GeoJSON | <code>object</code> | The input [GeoJSON](https://tools.ietf.org/html/rfc7946) Geometry, Feature, GeometryCollection or FeatureCollection. |
 
@@ -105,2 +121,19 @@ <a name="module_Terraformer.positionToGeographic"></a>
 
+<a name="module_Terraformer.positionToMercator"></a>
+
+### Terraformer.positionToMercator(CoordinatePair) ⇒ <code>Array.&lt;Number, Number&gt;</code>
+Reprojects the passed Coordinate pair to web mercator (3857) spatial reference.
+
+**Kind**: static method of [<code>Terraformer</code>](#module_Terraformer)  
+**Returns**: <code>Array.&lt;Number, Number&gt;</code> - CoordinatePair.
+```js
+import { positionToGeographic } from "@terraformer/spatial"
+
+positionToMercator([ 45, 60 ]) // [ -13580978, 5621521  ]
+```  
+
+| Param | Type | Description |
+| --- | --- | --- |
+| CoordinatePair | <code>Array.&lt;Number, Number&gt;</code> | An X,Y position. |
+
 <a name="module_Terraformer.toMercator"></a>
@@ -126,3 +159,3 @@
 | --- | --- | --- |
-| GeoJSON | <code>object</code> | The input [GeoJSON](https://tools.ietf.org/html/rfc7946) Geometry, Feature, GeometryCollection or ReatureCollection. |
+| GeoJSON | <code>object</code> | The input [GeoJSON](https://tools.ietf.org/html/rfc7946) Geometry, Feature, GeometryCollection or FeatureCollection. |
 
@@ -140,5 +173,5 @@ <a name="module_Terraformer.convexHull"></a>
 convexHull({
-  'type': 'LineString',
-  'coordinates': [
-    [100, 0], [-45, 122], [80, -60]
+  type: "LineString",
+  coordinates: [
+    [ 100, 0 ], [ -45, 122 ], [ 80, -60 ]
   ]
@@ -151,3 +184,3 @@ })
   coordinates: [
-    [ 100, 0 ], [ -45, 122 ], [ 80, -60 ], [ 100, 0 ]
+    [ [ 100, 0 ], [ -45, 122 ], [ 80, -60 ], [ 100, 0 ] ]
   ]
@@ -159,4 +192,28 @@ }
 | --- | --- | --- |
-| GeoJSON | <code>object</code> | The input [GeoJSON](https://tools.ietf.org/html/rfc7946) Geometry, Feature, GeometryCollection or ReatureCollection. |
+| GeoJSON | <code>object</code> | The input [GeoJSON](https://tools.ietf.org/html/rfc7946) Geometry, Feature, GeometryCollection or FeatureCollection. |
 
+<a name="module_Terraformer.isConvex"></a>
+
+### Terraformer.isConvex(GeoJSON) ⇒ <code>Boolean</code>
+Determine whether input GeoJSON has a [convex](https://en.wikipedia.org/wiki/Convex_set) shape.
+
+**Kind**: static method of [<code>Terraformer</code>](#module_Terraformer)  
+**Returns**: <code>Boolean</code> - Yes/No
+```js
+import { isConvex } from "@terraformer/spatial"
+
+isConvex({
+  type: "Polygon",
+  coordinates: [
+    [ [ 100, 0 ], [ -45, 122 ], [ 80, -60 ], [ 100, 0 ] ]
+  ]
+})
+
+>> true
+```  
+
+| Param | Type | Description |
+| --- | --- | --- |
+| GeoJSON | <code>Object</code> | The input [GeoJSON](https://tools.ietf.org/html/rfc7946) Geometry, Feature, GeometryCollection or FeatureCollection. |
+
 <a name="module_Terraformer.polygonContainsPoint"></a>
@@ -174,5 +231,5 @@
   [
-    [1, 2], [2, 2], [2, 1], [1, 1], [1, 2]
+    [ [ 1, 2 ], [ 2, 2 ], [ 2, 1 ], [ 1, 1 ], [ 1, 2 ] ]
   ],
-  [10, 10]
+  [ 10, 10 ]
 )
@@ -271,4 +328,4 @@
 | --- | --- | --- |
-| GeoJSON | <code>Object</code> | The input [GeoJSON](https://tools.ietf.org/html/rfc7946) Geometry, Feature, GeometryCollection or ReatureCollection. |
-| GeoJSON | <code>Object</code> | The input [GeoJSON](https://tools.ietf.org/html/rfc7946) Geometry, Feature, GeometryCollection or ReatureCollection. |
+| GeoJSON | <code>Object</code> | The input [GeoJSON](https://tools.ietf.org/html/rfc7946) Geometry, Feature, GeometryCollection or FeatureCollection. |
+| GeoJSON | <code>Object</code> | The input [GeoJSON](https://tools.ietf.org/html/rfc7946) Geometry, Feature, GeometryCollection or FeatureCollection. |
 
@@ -275,0 +332,0 @@ <a name="module_Terraformer.toCircle"></a>

Fixed alerts

Major refactor

Supply chain risk

Package has recently undergone a major refactor. It may be unstable or indicate significant internal changes. Use caution when updating to versions that include significant changes.

Found 1 instance in 1 package

Improved metrics

Total package byte prevSize

73203

increased by9.51%

Lines of code

1665

increased by5.98%

Number of lines in readme file

386

increased by17.33%

Number of medium supply chain risk alerts

0

decreased by-100%

No dependency changes