remove unroll filter

- not unrolling properly now that we are using ZXY rotation order

Author: vkovec

com.unity.formats.fbx/Editor/FbxExporter.cs

@@ -1158,9 +1158,9 @@ internal static FbxVector4 ToFbxVector4(FbxDouble3 v)
         /// </summary>
         /// <returns>a quaternion.</returns>
         /// <param name="euler">Euler.</param>
-        internal static FbxQuaternion EulerToQuaternion(FbxVector4 euler)
+        internal static FbxQuaternion EulerToQuaternionZXY(Vector3 euler)
         {
-            var unityQuat = Quaternion.Euler(new Vector3((float)euler.X, (float)euler.Y, (float)euler.Z));
+            var unityQuat = Quaternion.Euler(euler);
             return new FbxQuaternion(unityQuat.x, unityQuat.y, unityQuat.z, unityQuat.w);
         }
 

com.unity.formats.fbx/Editor/FbxRotationCurve.cs

@@ -123,9 +123,6 @@ public void Animate(Transform unityTransform, FbxNode fbxNode, FbxAnimLayer fbxA
             // Uni-35616 unroll curves to preserve continuous rotations
             var fbxCurveNode = fbxNode.LclRotation.GetCurveNode(fbxAnimLayer, false /*should already exist*/);
 
-            FbxAnimCurveFilterUnroll fbxAnimUnrollFilter = new FbxAnimCurveFilterUnroll();
-            fbxAnimUnrollFilter.Apply(fbxCurveNode);
-
             if (Verbose) {
                 Debug.Log("Exported rotation animation for " + fbxNode.GetName());
             }
@@ -179,9 +176,8 @@ protected override FbxQuaternion GetConvertedQuaternionRotation (float seconds,
             );
 
             // convert the final animation to righthanded coords
-            var finalEuler = ModelExporter.ToFbxDouble3(unityFinalAnimation);
 
-            return ModelExporter.EulerToQuaternion (new FbxVector4(finalEuler));
+            return ModelExporter.EulerToQuaternionZXY (unityFinalAnimation);
         }
     }