ModelTranslator: 烘焙前应用物体变换——修未应用缩放(cm单位FBX)致射线距离失效的脏色

well_uv.fbx(scale=0.01) 烘焙 22-33% 像素脏色，应用变换后与 well5k 像素级一致(<0.04%)

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

Tools/ModelTranslator/bl_bake.py

@@ -57,7 +57,14 @@ def _import_fbx_joined(path, warnings):
                         % (os.path.basename(path), ", ".join(skipped)))
     if not meshes:
         return None
-    return join_meshes(meshes)
+    obj = join_meshes(meshes)
+    # 应用物体变换（世界坐标不变）：cage_extrusion/max_ray_distance 按低模局部空间解释，
+    # 未应用的缩放（如 cm 单位 FBX 的 scale=0.01）会把射线距离缩到近零导致大面积打空（脏色）
+    bpy.ops.object.select_all(action='DESELECT')
+    obj.select_set(True)
+    bpy.context.view_layer.objects.active = obj
+    bpy.ops.object.transform_apply(location=True, rotation=True, scale=True)
+    return obj
 
 
 def _setup_bake_target(low, stem):