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# SPDX-License-Identifier: GPL-2.0-or-later
import itertools
from . import is_
from mathutils import Vector
def map_dxf_to_blender_type(TYPE):
"""
TYPE: DXF entity type (String)
"""
if is_.mesh(TYPE):
return "object_mesh"
if is_.curve(TYPE):
return "object_curve"
if is_.nurbs(TYPE):
return "object_surface"
else:
print("groupsort: not mergeable type ", TYPE)
return "not_mergeable"
def by_blender_type(entities):
"""
entities: list of DXF entities
"""
keyf = lambda e: map_dxf_to_blender_type(e.dxftype)
return itertools.groupby(sorted(entities, key=keyf), key=keyf)
def by_layer(entities):
"""
entities: list of DXF entities
"""
keyf = lambda e: e.layer
return itertools.groupby(sorted(entities, key=keyf), key=keyf)
def by_closed_poly_no_bulge(entities):
"""
entities: list of DXF entities
"""
keyf = lambda e: is_.closed_poly_no_bulge(e)
return itertools.groupby(sorted(entities, key=keyf), key=keyf)
def by_dxftype(entities):
"""
entities: list of DXF entities
"""
keyf = lambda e: e.dxftype
return itertools.groupby(sorted(entities, key=keyf), key=keyf)
def by_attributes(entities):
"""
entities: list of DXF entities
attributes: thickness and width occurring in curve types; subdivision_levels occurring in MESH dxf types
"""
def attributes(entity):
width = [(0, 0)]
subd = -1
extrusion = entity.extrusion
if hasattr(entity, "width"):
if any((w != 0 for ww in entity.width for w in ww)):
width = entity.width
if hasattr(entity, "subdivision_levels"):
subd = entity.subdivision_levels
if entity.dxftype in {"LINE", "POINT"}:
extrusion = (0.0, 0.0, 1.0)
if extrusion is None:
# This can happen for entities of type "SPLINE" for example.
# But the sort comparison does not work between 'tuple' and 'NoneType'.
extrusion = ()
return entity.thickness, subd, width, extrusion
return itertools.groupby(sorted(entities, key=attributes), key=attributes)
def by_insert_block_name(inserts):
"""
entities: list of DXF inserts
"""
keyf = lambda e: e.name
return itertools.groupby(sorted(inserts, key=keyf), key=keyf)
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