use absolute namespaces

- before creating a new namespace, check if there is already an export set for this file. If there is take the namespace defined in the export set.
- make sure to add the new set to the root namespace, otherwise will have trouble finding the set

Author: vkovec

Assets/Integrations/Autodesk/maya/scripts/unityCommands.mel

@@ -112,20 +112,33 @@ proc importFile(string $filePathStr){
     }
     $unityExportSet = `format -stringArg $nameWithoutExt $UnityExportSetNameFormat`;
 
-    string $origNamespace = `namespaceInfo -cur`;
+    string $origNamespace = `namespaceInfo -cur -an`;
+    string $targetNamespace = `format -s $origNamespace -s $nameWithoutExt "^1s:^2s"`;
+    
+    $setNamespaceExists = false;
+    if (setExists($unityExportSet)){
+        // get namespace from set
+        $setNamespace = getAttribute($unityExportSet, $UnityFbxNamespaceAttr);
+        if($setNamespace != "" && `namespace -exists $setNamespace`){
+            $targetNamespace = $setNamespace;
+            $setNamespaceExists = true;
+        }
+    }
 
     // warn if namespace already exists
-    if(`namespace -exists $nameWithoutExt` || $origNamespace == $nameWithoutExt){
-        if(!showConfirmDialog("Warning",
-            "Namespace already exists, the imported objects will be added to the existing namespace and export set.",
-            "Continue", "Cancel"
-           )){
-            // cancelled, don't import this fbx
-            return;
+    if(!$setNamespaceExists){
+        if(`namespace -exists $targetNamespace`){
+            if(!showConfirmDialog("Warning",
+                "Namespace already exists, the imported objects will be added to the existing namespace and export set.",
+                "Continue", "Cancel"
+               )){
+                // cancelled, don't import this fbx
+                return;
+            }
+        }
+        else{
+            namespace -add $targetNamespace;
         }
-    }
-    else{
-        namespace -add $nameWithoutExt;
     }
 
     // Gather everything that is in the scene
@@ -134,6 +147,10 @@ proc importFile(string $filePathStr){
     // Get or create the Unity Fbx Export Set
     $setCreated = false;
     if (!setExists($unityExportSet)){
+        if(!`namespaceInfo -isRootNamespace $origNamespace`){
+            namespace -set ":";
+        }
+    
         // couldn't find export set so create it
         sets -name $unityExportSet;
         $setCreated = true;
@@ -149,12 +166,12 @@ proc importFile(string $filePathStr){
         storeAttribute($unityExportSet, $UnityFbxNamespaceAttr, "");
     }
 
-    if($origNamespace != $nameWithoutExt){
-        namespace -set $nameWithoutExt;
+    if(`namespaceInfo -cur -an` != $targetNamespace){
+        namespace -set $targetNamespace;
     }
     file -import -type "FBX" -ignoreVersion -ra true -mergeNamespacesOnClash true -pr -importFrameRate true -importTimeRange "override" $filePathStr;
 
-    if($origNamespace != $nameWithoutExt){
+    if(`namespaceInfo -cur -an` != $origNamespace){
         namespace -set $origNamespace;
     }
 
@@ -175,7 +192,7 @@ proc importFile(string $filePathStr){
     }
 
     if($nameWithoutExt != ""){
-        storeAttribute($unityExportSet, $UnityFbxNamespaceAttr, `namespaceInfo -an $nameWithoutExt`);
+        storeAttribute($unityExportSet, $UnityFbxNamespaceAttr, $targetNamespace);
     }
 
     if (setExists($unityExportSet) == true){