add preference for centering objects

Author: vkovec

Assets/FbxExporters/Editor/FbxExportSettings.cs

@@ -33,7 +33,13 @@ public override void OnInspectorGUI() {
                     " and unexpected character replacements in Maya.")
                 ),
                 exportSettings.mayaCompatibleNames);
-
+            
+            exportSettings.centerObjects = EditorGUILayout.Toggle (
+                new GUIContent("Center Objects:",
+                    "Export objects centered around the union of the bounding box of selected objects"),
+                exportSettings.centerObjects
+            );
+                
             GUILayout.BeginHorizontal ();
             GUILayout.Label (new GUIContent (
                 "Model Prefab Path:",
@@ -92,6 +98,7 @@ public class ExportSettings : FbxExporters.EditorTools.ScriptableSingleton<Expor
         public bool weldVertices = true;
         public bool embedTextures = false;
         public bool mayaCompatibleNames = true;
+        public bool centerObjects = true;
         public string convertToModelSavePath;
 
         void OnEnable()

Assets/FbxExporters/Editor/FbxExporter.cs

@@ -835,9 +835,7 @@ public int ExportAll (IEnumerable<UnityEngine.Object> unityExportSet)
                         }
                         else{
                             // find the center of the export set
-                            Vector3 center = FindCenter(revisedExportSet);
-                            var test = GameObject.CreatePrimitive(PrimitiveType.Sphere);
-                            test.transform.position = center;
+                            Vector3 center = EditorTools.ExportSettings.instance.centerObjects? FindCenter(revisedExportSet) : Vector3.zero;
 
                             foreach (var unityGo in revisedExportSet) {
                                 exportProgress = this.ExportComponents (unityGo, fbxScene, fbxRootNode,