Update earcut to latest

Assets/Mapzen/Unity/Earcut.cs

@@ -20,20 +20,15 @@ public class Earcut
         private static extern uint ReleaseTesselationContext(uint context);
 
         [DllImport(LibraryName, EntryPoint = "TesselatePolygon")]
-        private static extern void TesselatePolygon(uint context, IntPtr points, IntPtr rings, int nRings, out int nIndices, out int nVertices);
+        private static extern void TesselatePolygon(uint context, IntPtr points, IntPtr rings, int nRings, out int nIndices);
 
         [DllImport(LibraryName, EntryPoint = "GetIndices")]
         private static extern void GetIndices(uint context, IntPtr indices);
 
-        [DllImport(LibraryName, EntryPoint = "GetVertices")]
-        private static extern void GetVertices(uint context, IntPtr vertices);
-
         private uint contextId;
 
         public int[] Indices { get; internal set; }
 
-        public float[] Vertices { get; internal set; }
-
         public Earcut()
         {
             contextId = CreateTesselationContext();
@@ -42,28 +37,23 @@ public Earcut()
 
         public void Tesselate(float[] points, int[] rings)
         {
-            int nVertices = 0;
             int nIndices = 0;
 
             GCHandle pointsBufferHandle = GCHandle.Alloc(points, GCHandleType.Pinned);
             GCHandle ringsBufferHandle = GCHandle.Alloc(rings, GCHandleType.Pinned);
 
-            TesselatePolygon(contextId, pointsBufferHandle.AddrOfPinnedObject(), ringsBufferHandle.AddrOfPinnedObject(), rings.Length, out nIndices, out nVertices);
+            TesselatePolygon(contextId, pointsBufferHandle.AddrOfPinnedObject(), ringsBufferHandle.AddrOfPinnedObject(), rings.Length, out nIndices);
 
             pointsBufferHandle.Free();
             ringsBufferHandle.Free();
 
             Indices = new int[nIndices];
-            Vertices = new float[nVertices * 2];
 
             GCHandle indicesBufferHandle = GCHandle.Alloc(Indices, GCHandleType.Pinned);
-            GCHandle verticesBufferHandle = GCHandle.Alloc(Vertices, GCHandleType.Pinned);
 
             GetIndices(contextId, indicesBufferHandle.AddrOfPinnedObject());
-            GetVertices(contextId, verticesBufferHandle.AddrOfPinnedObject());
 
             indicesBufferHandle.Free();
-            verticesBufferHandle.Free();
         }
 
         public void Release()

Assets/Mapzen/Unity/IO.cs

@@ -48,7 +48,7 @@ public IEnumerator FetchNetworkData(Uri uri, IORequestCallback callback)
                 yield return request.Send();
                 string requestError = null;
 
-                if (request.isError)
+                if (request.isNetworkError)
                 {
                     // only handles system errors
                     requestError = request.error;

Assets/Mapzen/Unity/PolygonBuilder.cs

@@ -1,4 +1,5 @@
 using System.Collections.Generic;
+using System.Linq;
 using Mapzen.VectorData;
 using UnityEngine;
 using System;
@@ -120,12 +121,11 @@ public void OnEndPolygon()
             var earcut = new Earcut();
 
             earcut.Tesselate(coordinates.ToArray(), rings.ToArray());
+            var vertices = new List<Vector3>(coordinates.Count / 2);
 
-            var vertices = new List<Vector3>(earcut.Vertices.Length / 2);
-
-            for (int i = 0; i < earcut.Vertices.Length; i += 2)
+            for (int i = 0; i < coordinates.Count; i += 2)
             {
-                var v = new Vector3(earcut.Vertices[i], options.MaxHeight, earcut.Vertices[i + 1]);
+                var v = new Vector3(coordinates[i], options.MaxHeight, coordinates[i + 1]);
 
                 v = this.transform.MultiplyPoint(v);