try obj output again, this time with conversion

app.py

@@ -32,7 +32,7 @@ def run_on_gpu(input_point_cloud: gr.utils.NamedString,
     out_dir = '/tmp/outputs/{}'.format(rand_hash)
     out_file_basename = os.path.basename(in_file) + '.ply'
     out_file = os.path.join(out_dir, os.path.basename(in_file), out_file_basename)
-    out_file_gradio = os.path.splitext(in_file)[0] + '_ppsurf.ply'
+    out_file_gradio = os.path.splitext(in_file)[0] + '_ppsurf.obj'
     print('in_file:', in_file)
     print('out_dir:', out_dir)
     print('out_file:', out_file)
@@ -65,9 +65,16 @@ def run_on_gpu(input_point_cloud: gr.utils.NamedString,
 
     print('Finished inference at {}'.format(datetime.datetime.now()))
 
-    import shutil
-    shutil.copyfile(src=out_file, dst=out_file_gradio)
-    
+    # import shutil
+    # shutil.copyfile(src=out_file, dst=out_file_gradio)
+
+    def _convert_mesh(in_file: str, out_file: str):
+        import trimesh
+        mesh = trimesh.load(in_file)
+        mesh.export(out_file)
+
+    _convert_mesh(in_file=out_file, out_file=out_file_gradio)
+
     return out_file_gradio