missing isClockwise() added

OSMBuildings · Apr 20, 2016 · 8e0bccb · 8e0bccb
1 parent 4d6b1cd
commit 8e0bccb
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Showing 3 changed files with 13 additions and 1 deletion.
diff --git a/dist/Triangulate.js b/dist/Triangulate.js
@@ -1245,6 +1245,12 @@ var Triangulate = {};
     }
   };
 
+  function isClockWise(ring) {
+    return 0 < ring.reduce(function(a, b, c, d) {
+      return a + ((c < d.length - 1) ? (d[c+1][0] - b[0]) * (d[c+1][1] + b[1]) : 0);
+    }, 0);
+  }
+
   function process(res, id, properties, geom, position, color) {
     var geometry = transform(geom, position),
       bbox = getBBox(geometry[0]),

diff --git a/package.json b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "Triangulate",
-  "version": "0.1.2",
+  "version": "0.1.3",
   "homepage": "http://osmbuildings.org",
   "description": "GeoJSON triangulation scripts collection. Mainly used for OSM Buildings backend + frontend.",
   "main": "dist/Triangulate.js",

diff --git a/src/Triangulate.js b/src/Triangulate.js
@@ -96,6 +96,12 @@ var Triangulate = {};
     }
   };
 
+  function isClockWise(ring) {
+    return 0 < ring.reduce(function(a, b, c, d) {
+      return a + ((c < d.length - 1) ? (d[c+1][0] - b[0]) * (d[c+1][1] + b[1]) : 0);
+    }, 0);
+  }
+
   function process(res, id, properties, geom, position, color) {
     var geometry = transform(geom, position),
       bbox = getBBox(geometry[0]),