Add support for Unity 2017.3, 32-bit mesh index buffers, and add priv…

…ate .vs directory to .gitignore (MicroGSD#39)

* Add support for Unity 2017.3 and 32-bit mesh index buffers

* Returned old formatting

*Added .vs directory to .gitignore

.gitignore

@@ -17,6 +17,7 @@ ExportedObj/
 *.pidb
 *.booproj
 *.svd
+/.vs
 
 # Unity3D Generated File On Crash Reports
 sysinfo.txt

GSDRoadMeshSplinate.cs

@@ -2156,9 +2156,15 @@ private void SplinateMesh_Do(bool bGetStrings, ref GameObject[] ErrortObj, bool
 //			float yDiff = 0f;
 //			float tDistance = 0f;
 			int MVL = MeshCount * OrigMVL;
+			#if UNITY_2017_3_OR_NEWER
+			if(MVL > 4000000){
+				throw new System.Exception("Over 4000000 vertices detected, exiting extrusion. Try switching splination axis and make sure your imported FBX file has proper import scale. Make sure the mesh isn't too small and make sure the distance isn't too large.");
+			}
+			#else
 			if(MVL > 64900){
 				throw new System.Exception("Over 65000 vertices detected, exiting extrusion. Try switching splination axis and make sure your imported FBX file has proper import scale. Make sure the mesh isn't too small and make sure the distance isn't too large.");
 			}
+			#endif
 			int MaxCount = MaxVectorIndices.Count;
 			int MinCount = MinVectorIndices.Count;
 			int TriCount = MeshCount * OrigTriCount;