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IfcOpenShell/src/ifcsverchok/nodes/ifc/read_entity.py
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2022-11-11 12:52:06 +01:00

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3.5 KiB
Python

# IfcSverchok - IFC Sverchok extension
# Copyright (C) 2020, 2021, 2022 Dion Moult <dion@thinkmoult.com>
#
# This file is part of IfcSverchok.
#
# IfcSverchok 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 3 of the License, or
# (at your option) any later version.
#
# IfcSverchok 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 IfcSverchok. If not, see <http://www.gnu.org/licenses/>.
import bpy
import ifcopenshell
import ifcsverchok.helper
from ifcsverchok.ifcstore import SvIfcStore
from bpy.props import StringProperty
from sverchok.node_tree import SverchCustomTreeNode
from sverchok.data_structure import updateNode, ensure_min_nesting, flatten_data
class SvIfcReadEntity(
bpy.types.Node, SverchCustomTreeNode, ifcsverchok.helper.SvIfcCore
):
bl_idname = "SvIfcReadEntity"
bl_label = "IFC Read Entity"
entity: StringProperty(name="Entity Id", update=updateNode)
current_ifc_class: StringProperty(name="current_ifc_class")
def sv_init(self, context):
self.inputs.new("SvStringsSocket", "entity").prop_name = "entity"
self.outputs.new("SvStringsSocket", "id")
self.outputs.new("SvStringsSocket", "is_a")
def draw_buttons(self, context, layout):
layout.operator(
"node.sv_ifc_tooltip", text="", icon="QUESTION", emboss=False
).tooltip = (
"Decompose an IfcEntity into its attributes. Takes one entity id as input"
)
def process(self):
self.sv_input_names = ["entity"]
entity_id = flatten_data(self.inputs["entity"].sv_get(), target_level=1)
if not entity_id[0]:
return
if len(entity_id) > 1:
raise Exception("Only one entity can be read at a time")
self.file = SvIfcStore.get_file()
try:
entity = self.file.by_id(entity_id[0])
except Exception as e:
raise Exception("Instance with id {} not found".format(entity_id), e)
if entity:
ifc_class = entity.is_a()
file = SvIfcStore.get_file()
if file:
schema_name = file.wrapped_data.schema
else:
schema_name = "IFC4"
self.schema = ifcopenshell.ifcopenshell_wrapper.schema_by_name(schema_name)
self.entity_schema = self.schema.declaration_by_name(ifc_class)
if ifc_class != self.current_ifc_class:
self.generate_outputs(ifc_class)
self.outputs["id"].sv_set([entity.id()])
self.outputs["is_a"].sv_set([entity.is_a()])
for i in range(0, self.entity_schema.attribute_count()):
name = self.entity_schema.attribute_by_index(i).name()
self.outputs[name].sv_set([entity[i]])
def generate_outputs(self, ifc_class):
while len(self.outputs) > 2:
self.outputs.remove(self.outputs[-1])
for i in range(0, self.entity_schema.attribute_count()):
name = self.entity_schema.attribute_by_index(i).name()
self.outputs.new("SvStringsSocket", name).prop_name = name
self.current_ifc_class = ifc_class
def register():
bpy.utils.register_class(SvIfcReadEntity)
def unregister():
bpy.utils.unregister_class(SvIfcReadEntity)