arc - npm Package Compare versions

Comparing version 0.1.3 to 0.1.4

arc.js

@@ -13,2 +13,17 @@ 'use strict';
 
+var roundCoords = function(coords) {
+    // round coordinate decimal values to 6 places
+    var PRECISION = 6;
+    var MULTIPLIER = Math.pow(10, PRECISION)
+
+    for (var i = 0; i < coords.length; i++) {
+        // https://stackoverflow.com/questions/11832914/how-to-round-to-at-most-2-decimal-places-if-necessary
+        coords[i] = Math.round(
+            (coords[i] + Number.EPSILON) * MULTIPLIER
+        ) / MULTIPLIER
+    }
+
+    return coords;
+}
+
 Coord.prototype.view = function() {
@@ -244,3 +259,3 @@ return String(this.lon).slice(0, 4) + ',' + String(this.lat).slice(0, 4);
         for (var j0 = 0; j0 < points.length; ++j0) {
-            line.move_to(points[j0]);
+            line.move_to(roundCoords(points[j0]));
         }
@@ -247,0 +262,0 @@ }

CHANGELOG.md

@@ -1,17 +0,41 @@
-# v0.1.3
+# Change Log
 
+All notable changes to this project will be documented in this file.
+This project adheres to [Semantic Versioning](http://semver.org/).
+
+## [Unreleased][unreleased]
+## [0.1.4] - 2022-11-16
+
+### Changed
+- Limit output precision to six decimal places
+## [0.1.3] - 2022-05-09
+
+### Fixed
 - Fix bug when generating string for Antipodal error
 
-# v0.1.2
+## [0.1.2] - 2021-10-13
 
+### Fixed
 - Fix link to algorithm used in documentation (https://github.com/springmeyer/arc.js/pull/40)
 
-# v0.1.1
+## [0.1.1] - 2018-06-20
 
+### Added
 - Support browserify (https://github.com/springmeyer/arc.js/pull/26)
 
-# v0.1.0
+## 0.1.0 - 2014-02-11
 
+### Changed
 - Changed GreatCircle constructor to expect objects like `{x:-122,y:48}` for start/end rather than arc.Coord objects
+
+### Added
 - Added mocha tests
+
+### Fixed
 - Fixed jshint strict errors
+
+[unreleased]: https://github.com/springmeyer/arc.js/compare/v0.1.4..HEAD
+[0.1.4]: https://github.com/springmeyer/arc.js/compare/v0.1.3...v0.1.4
+[0.1.3]: https://github.com/springmeyer/arc.js/compare/v0.1.2...v0.1.3
+[0.1.2]: https://github.com/springmeyer/arc.js/compare/v0.1.1...v0.1.2
+[0.1.1]: https://github.com/springmeyer/arc.js/compare/v0.1.0...v0.1.1

package.json

 {
   "name": "arc",
-  "version": "0.1.3",
+  "version": "0.1.4",
   "description": "draw great circle arcs",
@@ -34,12 +34,4 @@ "url": "https://github.com/springmeyer/arc.js",
   "devDependencies": {
-    "tape": "~2.12.1"
-  },
-  "testling": {
-    "files": "test/*.js",
-    "browsers": [
-      "chrome/22..latest",
-      "firefox/16..latest",
-      "safari/latest"
-    ]
+    "tape": "~5.5.3"
   }
 }

README.md

@@ -15,6 +15,2 @@ # arc.js
 
-```bash
-$ bower install --save arc.js
-```
-
 ## License
@@ -70,11 +66,17 @@
 > line
-{ properties: { name: 'Seattle to DC' },
-  coords: 
-   [ [ -122, 48.00000000000001 ],
-     [ -112.06161978373486, 47.7241672604096 ],
-     [ -102.38404317022653, 46.60813199882492 ],
-     [ -93.22718895342909, 44.716217302635705 ],
-     [ -84.74823988299501, 42.14415510795357 ],
-     [ -77, 38.99999999999999 ] ],
-  length: 6 }
+{
+  properties: { name: 'Seattle to DC' },
+  geometries: [
+    {
+      coords:
+       [ [ -122, 48 ],
+         [ -112.06162, 47.724167 ],
+         [ -102.384043, 46.608132 ],
+         [ -93.227189, 44.716217 ],
+         [ -84.74824, 42.144155 ],
+         [ -77, 39 ] ],
+      length: 6
+    }
+  ]
+}
 ```
@@ -94,3 +96,3 @@
 > line.json();
-{ geometry: 
+{ geometry:
    { type: 'LineString',
@@ -106,5 +108,5 @@ coordinates: [ [Object], [Object], [Object], [Object], [Object], [Object] ] },
 > line.wkt();
-'LINESTRING(-122 48.00000000000001,-112.06161978373486 47.7241672604096,-102.38404317022653 46.60813199882492,-93.22718895342909 44.716217302635705,-84.74823988299501 42.14415510795357,-77 38.99999999999999)'
+'LINESTRING(-122 48,-112.061619 47.724167,-102.384043 46.608131,-93.227188 44.716217,-84.748239 42.144155,-77 38.999999)'
 ```
 
-It is then up to you to add up these features to create fully fledged geodata. See the examples/ directory for sample code to create GeoJSON feature collection from multiple routes.
+It is then up to you to add up these features to create fully fledged geodata. See the examples/ directory for sample code to create a GeoJSON feature collection from multiple routes.

test/arc.test.js

@@ -67,10 +67,18 @@ 'use strict';
 var arcs = [
-  {"properties":{"name":"Seattle to DC"},"geometries":[{"coords":[[-122,48.00000000000001],[-97.72808611752785,45.75368189927002],[-77,38.99999999999999]],"length":3}]},
-  {"properties":{"name":"Seattle to London"},"geometries":[{"coords":[[-122,48.00000000000001],[-64.16590091973099,67.47624207149578],[0,51]],"length":3}]},
-  {"properties":{"name":"crosses dateline 1"},"geometries":[{"coords":[[-75.9375,35.46066995149531],[-136.82303405489677,-10.367409282634164],[146.25,-43.06888777416961]],"length":3}]},
-  {"properties":{"name":"crosses dateline 2"},"geometries":[{"coords":[[145.54687500000003,48.45835188280866],[-157.28484118689477,8.44205355944752],[-112.5,-37.71859032558814]],"length":3}]},
-  {"properties":{"name":"south 1"},"geometries":[{"coords":[[-74.564208984375,-0.17578097424708533],[-140.44327137076033,-35.80108605508993],[137.779541015625,-22.755920681486387]],"length":3}]},
-  {"properties":{"name":"south 2"},"geometries":[{"coords":[[-66.829833984375,-18.812717856407765],[-146.78177837397814,-82.1795027896656],[118.795166015625,-20.79720143430698]],"length":3}]}
+  {"properties":{"name":"Seattle to DC"},"geometries":[{"coords":[[-122,48],[-97.728086,45.753682],[-77,39]],"length":3}]},
+  {"properties":{"name":"Seattle to London"},"geometries":[{"coords":[[-122,48],[-64.165901,67.476242],[0,51]],"length":3}]},
+  {"properties":{"name":"crosses dateline 1"},"geometries":[{"coords":[[-75.9375,35.46067],[-136.823034,-10.367409],[146.25,-43.068888]],"length":3}]},
+  {"properties":{"name":"crosses dateline 2"},"geometries":[{"coords":[[145.546875,48.458352],[-157.284841,8.442054],[-112.500000,-37.718590]],"length":3}]},
+  {"properties":{"name":"south 1"},"geometries":[{"coords":[[-74.564209,-0.175781],[-140.443271,-35.801086],[137.779541,-22.755921]],"length":3}]},
+  {"properties":{"name":"south 2"},"geometries":[{"coords":[[-66.829834,-18.812718],[-146.781778,-82.179503],[118.795166,-20.797201]],"length":3}]}
 ];
 
+var wkts = [
+  'LINESTRING(-122 48,-97.728086 45.753682,-77 39)',
+  'LINESTRING(-122 48,-64.165901 67.476242,0 51)',
+  'LINESTRING(-75.9375 35.46067,-136.823034 -10.367409,146.25 -43.068888)',
+  'LINESTRING(145.546875 48.458352,-157.284841 8.442054,-112.5 -37.71859)',
+  'LINESTRING(-74.564209 -0.175781,-140.443271 -35.801086,137.779541 -22.755921)',
+  'LINESTRING(-66.829834 -18.812718,-146.781778 -82.179503,118.795166 -20.797201)',
+]
 
@@ -81,4 +89,4 @@ test('Routes', function(t) {
         var line = gc.Arc(3);
-        //console.log(JSON.stringify(line))
-        t.deepEqual(line,arcs[idx]);
+        t.deepEqual(JSON.stringify(line), JSON.stringify(arcs[idx]));
+        t.equal(line.wkt(), wkts[idx]);
     });
@@ -85,0 +93,0 @@ t.end();

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Number of lines in readme file

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