diff options
Diffstat (limited to 'io_import_dxf/dxfimport/groupsort.py')
-rw-r--r-- | io_import_dxf/dxfimport/groupsort.py | 83 |
1 files changed, 83 insertions, 0 deletions
diff --git a/io_import_dxf/dxfimport/groupsort.py b/io_import_dxf/dxfimport/groupsort.py new file mode 100644 index 00000000..9722d05e --- /dev/null +++ b/io_import_dxf/dxfimport/groupsort.py @@ -0,0 +1,83 @@ +# ##### BEGIN GPL LICENSE BLOCK ##### +# +# This program is free software; you can redistribute it and/or +# modify it under the terms of the GNU General Public License +# as published by the Free Software Foundation; either version 2 +# of the License, or (at your option) any later version. +# +# This program is distributed in the hope that it will be useful, +# but WITHOUT ANY WARRANTY; without even the implied warranty of +# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +# GNU General Public License for more details. +# +# You should have received a copy of the GNU General Public License +# along with this program; if not, write to the Free Software Foundation, +# Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. +# +# ##### END GPL LICENSE BLOCK ##### + +# <pep8 compliant> + +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_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 occuring in curve types; subdivision_levels occuring 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) + return entity.thickness, subd, width, extrusion + + return itertools.groupby(sorted(entities, key=attributes), key=attributes) |