fix so triangles are not inverted when exported

Author: vkovec

Assets/Editor/FbxExporter.cs

@@ -204,7 +204,7 @@ public void ExportMesh (MeshInfo meshInfo, FbxNode fbxNode, FbxScene fbxScene)
                 // copy control point data from Unity to FBX
                 for (int v = 0; v < NumControlPoints; v++)
                 {
-                    fbxMesh.SetControlPointAt(new FbxVector4 (meshInfo.Vertices [v].x, meshInfo.Vertices [v].y, meshInfo.Vertices [v].z), v);
+                    fbxMesh.SetControlPointAt(new FbxVector4 (-meshInfo.Vertices [v].x, meshInfo.Vertices [v].y, meshInfo.Vertices [v].z), v);
                 }
 
                 ExportUVs (meshInfo, fbxMesh);
@@ -215,9 +215,9 @@ public void ExportMesh (MeshInfo meshInfo, FbxNode fbxNode, FbxScene fbxScene)
                 for (int f = 0; f < meshInfo.Triangles.Length / 3; f++)
                 {
                     fbxMesh.BeginPolygon ();
-                    fbxMesh.AddPolygon (meshInfo.Triangles [3 * f]);
-                    fbxMesh.AddPolygon (meshInfo.Triangles [3 * f + 1]);
-                    fbxMesh.AddPolygon (meshInfo.Triangles [3 * f + 2]);
+					fbxMesh.AddPolygon (meshInfo.Triangles [3 * f + 2]);
+					fbxMesh.AddPolygon (meshInfo.Triangles [3 * f + 1]);
+					fbxMesh.AddPolygon (meshInfo.Triangles [3 * f]);
                     fbxMesh.EndPolygon ();
                 }
 
@@ -235,8 +235,8 @@ protected void ExportTransform (UnityEngine.Transform unityTransform, FbxNode fb
                 UnityEngine.Vector3 unityScale = unityTransform.localScale;
 
                 // transfer transform data from Unity to Fbx
-                var fbxTranslate = new FbxDouble3 (unityTranslate.x, unityTranslate.y, unityTranslate.z);
-                var fbxRotate = new FbxDouble3 (unityRotate.x, unityRotate.y, unityRotate.z);
+                var fbxTranslate = new FbxDouble3 (-unityTranslate.x, unityTranslate.y, unityTranslate.z);
+                var fbxRotate = new FbxDouble3 (unityRotate.x, -unityRotate.y, -unityRotate.z);
                 var fbxScale = new FbxDouble3 (unityScale.x, unityScale.y, unityScale.z);
 
                 // set the local position of fbxNode