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
55
|
# Copyright (c) 2023, Manfred Moitzi
# License: MIT License
from __future__ import annotations
import pathlib
import ezdxf
from ezdxf import bbox, transform
CWD = pathlib.Path("~/Desktop/Outbox").expanduser()
if not CWD.exists():
CWD = pathlib.Path(".")
# This example requires ezdxf v1.1.0 or later.
def main():
doc = ezdxf.new()
msp = doc.modelspace()
# create a new block definition, with the default base point at (0, 0):
circle_block = doc.blocks.new("CIRCLE")
circle_block.add_circle((100, 100), 3)
# add a block reference to the model space
msp.add_blockref("CIRCLE", (0, 0))
doc.saveas(CWD / "original.dxf")
# get new base point from bounding box of the block definition:
extents = bbox.extents(circle_block, fast=True)
new_base_point = extents.center
# extents.extmin is the lower left corner
# extents.extmax is the upper right corner
# offset vector for block references:
offset = new_base_point - circle_block.base_point
circle_block.base_point = new_base_point
doc.saveas(CWD / "move_base_point.dxf")
# WARNING:
# So far the INSERT entities have not been updated, hence the block references are
# mislocated!!!
# Update INSERT entities:
# get ALL block references for block "CIRCLE"
block_refs = doc.query("INSERT[name=='CIRCLE']")
# translate all block references by offset vector
transform.translate(block_refs, offset)
doc.saveas(CWD / "updated_block_references.dxf")
if __name__ == "__main__":
if ezdxf.version >= (1, 1, 0):
main()
else:
print("This example requires ezdxf v1.1.0 or later.")
|
