1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
|
# Copyright (c) 2022, Manfred Moitzi
# License: MIT License
import pathlib
import ezdxf
from ezdxf.addons import Importer
from ezdxf.query import EntityQuery
CWD = pathlib.Path("~/Desktop/Outbox").expanduser()
if not CWD.exists():
CWD = pathlib.Path(".")
# ------------------------------------------------------------------------------
# This example shows how to separate entities by their layer attribute
#
# The example imports all entities from the modelspace into a new DXF document.
# The Importer add-on is required to also import the required resources used by
# the imported entities.
#
# Important advice:
# Keep things simple, more complex DXF documents may fail or at least the entities
# will not look the same as in the source file! Read the docs!
#
# Basic concept of layers : https://ezdxf.mozman.at/docs/concepts/layers.html
# Importer add-on: https://ezdxf.mozman.at/docs/addons/index.html
# ------------------------------------------------------------------------------
def main(filename: str):
source_doc = ezdxf.readfile(CWD / filename)
source_msp = source_doc.modelspace()
# create an EntityQuery container with all entities from the modelspace
source_entities = source_msp.query()
# get all layer names from entities in the modelspace:
all_layer_names = [e.dxf.layer for e in source_entities]
# remove unwanted layers if needed
for layer_name in all_layer_names:
# create a new document for each layer with the same DXF version as the
# source file
layer_doc = ezdxf.new(dxfversion=source_doc.dxfversion)
layer_msp = layer_doc.modelspace()
importer = Importer(source_doc, layer_doc)
# select all entities from modelspace from this layer (extended query
# feature of class EntityQuery)
entities: EntityQuery = source_entities.layer == layer_name # type: ignore
if len(entities):
importer.import_entities(entities, layer_msp)
# create required resources
importer.finalize()
layer_doc.saveas(CWD / f"{layer_name}.dxf")
if __name__ == "__main__":
main("test.dxf")
|
