Get entity starting from point 0,0

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Hello i have a dxf i Autocad is all with positive start and end point :
Reading the dxf I get this:
[('a', 0.0, 19.52642698097288, Vec3(301.53703630252323, 298.9848045280167, 0.0), Vec3(269.76999834797175, 483.6029692460057, 0.0), 19.52642698097288), ('l', 0.0, -5.68e-14, 298.9848045280168, -5.68e-14), ('a', 19.5264269809729, 52.87373394555312, Vec3(269.76999834797414, 483.6029692459985, 0.0), Vec3(197.56881445877247, 582.2530862398144, 0.0), 33.34730696458022), ('a', 52.87373394555312, 90.0, Vec3(197.56881445877315, 582.2530862398138, 0.0), Vec3(150.7685181512616, 597.9696090560334, 0.0), 37.12626605444688), ('a', 90.0, 127.1262660544469, Vec3(150.7685181512616, 597.9696090560334, 0.0), Vec3(103.96822184375003, 582.2530862398138, 0.0), 37.1262660544469), ('a', 127.1262660544469, 160.4735730190271, Vec3(103.96822184375083, 582.2530862398144, 0.0), Vec3(31.767037954549153, 483.60296924599857, 0.0), 33.3473069645802), ('a', 160.4735730190271, 180.0, Vec3(31.767037954551597, 483.60296924600607, 0.0), Vec3(0.0, 298.98480452801675, 0.0), 19.5264269809729), ('a', 180.0, 199.5264269809728, Vec3(0.0, 298.98480452801675, 0.0), Vec3(31.767037954551256, 114.3666398100284, 0.0), 19.526426980972786), ('a', 199.5264269809728, 232.8737339455531, Vec3(31.76703795454901, 114.36663981003525, 0.0), Vec3(103.9682218437508, 15.716522816219111, 0.0), 33.347306964580326), ('a', 232.8737339455531, 270.0, Vec3(103.96822184375013, 15.716522816219616, 0.0), Vec3(150.76851815126167, -4.263256414560601e-14, 0.0), 37.12626605444689), ('a', 270.0, 307.1262660544469, Vec3(150.76851815126167, -4.263256414560601e-14, 0.0), Vec3(197.56881445877326, 15.716522816219594, 0.0), 37.12626605444689), ('a', 307.1262660544468, 340.4735730190271, Vec3(197.56881445877218, 15.716522816218827, 0.0), Vec3(269.76999834797425, 114.36663981003498, 0.0), 33.347306964580355), ('a', 340.4735730190271, 360, Vec3(269.76999834797175, 114.36663981002772, 0.0), Vec3(301.53703630252323, 298.9848045280167, 0.0), 19.52642698097287)]

The first item of a tuple is 'a' for arc then start_angle and_angle coordinates etc. and 'l' for line with the coordinates :
I need to get the data starting from point (0,0) so the right is :

1. line ('l', 0.0, -5.68e-14, 298.9848045280168, -5.68e-14) I don't understand why y is not 0
2. arch ('a', 180.0, 199.5264269809728, Vec3(0.0, 298.98480452801675, 0.0), Vec3(31.767037954551256, 114.3666398100284, 0.0)
   and so on
   There is a way to get it ordered??
   Thanks