diff options
-rw-r--r-- | io_scene_obj/export_obj.py | 23 |
1 files changed, 19 insertions, 4 deletions
diff --git a/io_scene_obj/export_obj.py b/io_scene_obj/export_obj.py index 8a3978ca..c5fe57af 100644 --- a/io_scene_obj/export_obj.py +++ b/io_scene_obj/export_obj.py @@ -291,6 +291,10 @@ def write_file(filepath, objects, scene, # A Dict of Materials # (material.name, image.name):matname_imagename # matname_imagename has gaps removed. mtl_dict = {} + # Used to reduce the usage of matname_texname materials, which can become annoying in case of + # repeated exports/imports, yet keeping unique mat names per keys! + # mtl_name: (material.name, image.name) + mtl_rev_dict = {} copy_set = set() @@ -505,10 +509,21 @@ def write_file(filepath, objects, scene, # converting any spaces to underscores with name_compat. # If none image dont bother adding it to the name - if key[1] is None: - mat_data = mtl_dict[key] = ("%s" % name_compat(key[0])), materials[f_mat], f_image - else: - mat_data = mtl_dict[key] = ("%s_%s" % (name_compat(key[0]), name_compat(key[1]))), materials[f_mat], f_image + # Try to avoid as much as possible adding texname (or other things) + # to the mtl name (see [#32102])... + mtl_name = "%s" % name_compat(key[0]) + if mtl_rev_dict.get(mtl_name, None) not in {key, None}: + if key[1] is None: + tmp_ext = "_NONE" + else: + tmp_ext = "_%s" % name_compat(key[1]) + i = 0 + while mtl_rev_dict.get(mtl_name + tmp_ext, None) not in {key, None}: + i += 1 + tmp_ext = "_%3d" % i + mtl_name += tmp_ext + mat_data = mtl_dict[key] = mtl_name, materials[f_mat], f_image + mtl_rev_dict[mtl_name] = key if EXPORT_GROUP_BY_MAT: fw("g %s_%s_%s\n" % (name_compat(ob.name), name_compat(ob.data.name), mat_data[0])) # can be mat_image or (null) |