Update Files

leenkx/blender/lnx/lightmapper/utility/cycles/cache.py

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+import bpy
+
+#Todo - Check if already exists, in case multiple objects has the same material
+
+def backup_material_copy(slot):
+    material = slot.material
+    dup = material.copy()
+    dup.name = "." + material.name + "_Original"
+    dup.use_fake_user = True
+
+def backup_material_cache(slot, path):
+    bpy.ops.wm.save_as_mainfile(filepath=path, copy=True)
+
+def backup_material_cache_restore(slot, path):
+    if bpy.context.scene.TLM_SceneProperties.tlm_verbose:
+        print("Restore cache")
+
+# def backup_material_restore(obj): #??
+#     if bpy.context.scene.TLM_SceneProperties.tlm_verbose:
+#         print("Restoring material for: " + obj.name)
+
+#Check if object has TLM_PrevMatArray
+#   if yes
+#       - check if array.len is bigger than 0:
+#           if yes:
+#               for slot in object:
+#                   originalMaterial = TLM_PrevMatArray[index]
+#
+#
+#           if no:
+#               - In which cases are these?
+
+#   if no:
+#    - In which cases are there not?
+#    - If a lightmapped material was applied to a non-lightmap object?
+
+
+                # if bpy.data.materials[originalMaterial].users > 0: #TODO - Check if all lightmapped
+
+                #     print("Material has multiple users")
+                
+                #     if originalMaterial in bpy.data.materials:
+                #         slot.material = bpy.data.materials[originalMaterial]
+                #         slot.material.use_fake_user = False
+                #     elif "." + originalMaterial + "_Original" in bpy.data.materials:
+                #         slot.material = bpy.data.materials["." + originalMaterial + "_Original"]
+                #         slot.material.use_fake_user = False
+                
+                # else:
+
+                #     print("Material has one user")
+
+                #     if "." + originalMaterial + "_Original" in bpy.data.materials:
+                #         slot.material = bpy.data.materials["." + originalMaterial + "_Original"]
+                #         slot.material.use_fake_user = False
+                #     elif originalMaterial in bpy.data.materials:
+                #         slot.material = bpy.data.materials[originalMaterial]
+                #         slot.material.use_fake_user = False
+
+def backup_material_restore(obj): #??
+    if bpy.context.scene.TLM_SceneProperties.tlm_verbose:
+        print("Restoring material for: " + obj.name)
+
+    if "TLM_PrevMatArray" in obj:
+
+        if bpy.context.scene.TLM_SceneProperties.tlm_verbose:
+            print("Material restore array found: " + str(obj["TLM_PrevMatArray"]))
+        #Running through the slots
+        prevMatArray = obj["TLM_PrevMatArray"]
+        slotsLength = len(prevMatArray)
+
+        if len(prevMatArray) > 0:
+            for idx, slot in enumerate(obj.material_slots): #For each slot, we get the index
+                #We only need the index, corresponds to the array index
+                try:
+                    if bpy.context.scene.TLM_SceneProperties.tlm_verbose:
+                        print("Attempting to set material")
+                    originalMaterial = prevMatArray[idx]
+                except IndexError:
+                    if bpy.context.scene.TLM_SceneProperties.tlm_verbose:
+                        print("Material restore failed - Resetting")
+                    originalMaterial = ""
+
+                if slot.material is not None:
+                    #if slot.material.users < 2:
+                    #slot.material.user_clear() #Seems to be bad; See: https://developer.blender.org/T49837
+                    #bpy.data.materials.remove(slot.material)
+
+                    if "." + originalMaterial + "_Original" in bpy.data.materials:
+                        slot.material = bpy.data.materials["." + originalMaterial + "_Original"]
+                        slot.material.use_fake_user = False
+
+        else:
+
+            print("No previous material for " + obj.name)
+
+    else:
+
+        print("No previous material for " + obj.name)
+
+def backup_material_rename(obj): #??
+    if bpy.context.scene.TLM_SceneProperties.tlm_verbose:
+        print("Renaming material for: " + obj.name)
+
+
+    if "TLM_PrevMatArray" in obj:
+
+        for slot in obj.material_slots:
+
+            if slot.material is not None:
+                if slot.material.name.endswith("_Original"):
+                    newname = slot.material.name[1:-9]
+                    if newname in bpy.data.materials:
+                        if bpy.context.scene.TLM_SceneProperties.tlm_verbose:
+                            print("Removing material: " + bpy.data.materials[newname].name)
+                        #if bpy.data.materials[newname].users < 2:
+                            #bpy.data.materials.remove(bpy.data.materials[newname]) #TODO - Maybe remove this
+                    slot.material.name = newname
+
+        del obj["TLM_PrevMatArray"]
+
+    else:
+
+        print("No Previous material array for: " + obj.name)