def read_geom(ifc_path, ObjTypes):
"""Function to read elements from a ifc file
Args:
ifc_path (str): Full or relative path of the ifc file
ObjTypes (list): IfcTypes of the elements want to get info back
Returns:
dict: Dictionary containing dictionaries with the vertices, edges and tag of each element, using the globally unique id
"""
ifc_file = ifcopenshell.open(ifc_path)
settings = geom.settings()
settings.set(settings.USE_WORLD_COORDS, True)
objects_geometry = {}
for ObjType in ObjTypes:
ios_vertices = {}
ios_edges = {}
ios_elements = {}
for ifc_entity in ifc_file.by_type(
ObjType): # Retrieves all the elements of the given type
shape = geom.create_shape(
settings, ifc_entity) # Convert the ifc into a mesh
ios_vertices[ifc_entity[0]] = shape.geometry.verts
ios_edges[ifc_entity[0]] = shape.geometry.edges
ios_elements[ifc_entity[0]] = ifc_entity.Name
objects_geometry[ObjType] = {
"vertices": ios_vertices,
"edges": ios_edges,
"elements": ios_elements
}
return objects_geometry
def display_geom(ifc_path, base_class="IfcProduct"):
"""Display geom in from file in FreeCAD"""
ifc_file = ifcopenshell.open(ifc_path)
# Define settings
settings = geom.settings()
settings.set(settings.USE_BREP_DATA, True)
# Allow you to embed FreeCAD in python https://www.freecadweb.org/wiki/Embedding_FreeCAD
FreeCADGui.showMainWindow()
doc = FreeCAD.newDocument()
parts = [
convert_geom(ifc_entity, doc, settings)
for ifc_entity in ifc_file.by_type(base_class)
]
# Set Draw Style to display mesh edges. Orient view and fit to wall
FreeCADGui.runCommand("Std_DrawStyle", 1)
for part in parts:
FreeCADGui.Selection.addSelection(part)
FreeCADGui.activeView().viewIsometric()
FreeCADGui.SendMsgToActiveView("ViewSelection")
FreeCADGui.exec_loop()
def runExportFuncs():
settings = geom.settings()
settings.set(settings.USE_WORLD_COORDS, True)
f = ifcopenshell.open("tmpIfcFile.ifc")
product_li = []
faces_li = []
k = 0
for product in f.by_type("IfcProduct"):
# print(product.is_a())
all_obj_verts = []
all_obj_faces = []
vertex_li = []
try:
shape = ifcopenshell.geom.create_shape(settings, product)
geo = shape.geometry
obj_verts = procVerts(geo.verts)
obj_faces = procFaces(obj_verts, geo.faces)
all_obj_verts.append(obj_verts)
all_obj_faces.append(obj_faces)
except Exception as e:
# print('error --> ', e)
pass
for faces in all_obj_faces:
for obj in faces:
for item in obj:
vertex = {'x': item[0], 'y': item[1], 'z': item[2]}
vertex_li.append(vertex)
k += 1
prod = {"product_name": product.is_a(), "vertices": vertex_li}
product_li.append(prod)
return product_li
def toggleMesh(self, checked=False):
"turns mesh display on/off"
if not FreeCAD.ActiveDocument:
FreeCAD.newDocument()
if FreeCAD.ActiveDocument:
if checked:
if self.mesh:
self.mesh.ViewObject.show()
else:
import importIFC
s = importIFC.getScaling(self.ifc)
s *= 1000 # ifcopenshell outputs its meshes in metres
trf = None
if s != 1:
trf = FreeCAD.Matrix()
trf.scale(s, s, s)
basemesh = Mesh.Mesh()
import ifcopenshell
from ifcopenshell import geom
s = geom.settings()
s.set(s.USE_WORLD_COORDS, True)
for product in self.products:
try:
m = geom.create_shape(s, product)
g = m.geometry
v = g.verts
f = g.faces
verts = [
FreeCAD.Vector(v[i:i + 3])
for i in range(0, len(v), 3)
]
faces = [
tuple(f[i:i + 3]) for i in range(0, len(f), 3)
]
omesh = Mesh.Mesh((verts, faces))
if trf:
omesh.transform(trf)
self.omeshes[product.id()] = omesh
basemesh.addMesh(omesh)
except:
pass
self.mesh = FreeCAD.ActiveDocument.addObject(
"Mesh::Feature", "IFCMesh")
self.mesh.Mesh = basemesh
self.mesh.ViewObject.Transparency = 85
FreeCAD.ActiveDocument.recompute()
FreeCADGui.Selection.clearSelection()
FreeCADGui.Selection.addSelection(self.mesh)
FreeCADGui.SendMsgToActiveView("ViewSelection")
else:
if self.mesh:
self.mesh.ViewObject.hide()
if self.currentmesh:
self.currentmesh.ViewObject.hide()
def read_geom(ifc_path):
ifc_file = ifcopenshell.open(ifc_path)
settings = geom.settings()
for ifc_entity in ifc_file.by_type("IfcWall"):
shape = geom.create_shape(settings, ifc_entity)
# ios stands for IfcOpenShell
ios_vertices = shape.geometry.verts
ios_edges = shape.geometry.edges
ios_faces = shape.geometry.faces
# IfcOpenShell store vertices in a single tuple, same for edges and faces
print(ios_vertices)
print(ios_edges)
print(ios_faces)
""" Above will result in :
(0.0, 0.0, 0.0, 0.0, 0.0, 3.0, 10.0, 0.0, 0.0, 10.0, 0.0, 3.0, 10.0, 0.2, 0.0, 10.0, 0.2, 3.0, 0.0, 0.2, 0.0, 0.0, 0.2, 3.0)
(0, 1, 1, 3, 0, 2, 2, 3, 2, 3, 2, 4, 3, 5, 4, 5, 4, 5, 5, 7, 4, 6, 6, 7, 6, 7, 0, 6, 1, 7, 0, 1, 0, 6, 0, 2, 4, 6, 2, 4, 1, 7, 1, 3, 5, 7, 3, 5)
(1, 0, 3, 3, 0, 2, 3, 2, 4, 5, 3, 4, 5, 4, 7, 7, 4, 6, 7, 6, 0, 1, 7, 0, 0, 6, 2, 2, 6, 4, 3, 7, 1, 5, 7, 3)
"""
print(set(ios_edges))
print(set(ios_faces))
""" Above will result in :
{0, 1, 2, 3, 4, 5, 6, 7}
{0, 1, 2, 3, 4, 5, 6, 7}
"""
# Let's parse it and prepare it for FreeCAD import
vertices = [
FreeCAD.Vector(ios_vertices[i:i + 3])
for i in range(0, len(ios_vertices), 3)
]
edges = [ios_edges[i:i + 2] for i in range(0, len(ios_edges), 2)]
faces = [
tuple(ios_faces[i:i + 3]) for i in range(0, len(ios_faces), 3)
]
print(
f"This {ifc_entity.is_a()} has been defined by {len(vertices)} vertices, {len(edges)} edges and {len(faces)} faces"
)
print(vertices)
print(edges)
print(faces)
""" Above will result in :
This IfcWall has been defined by 8 vertices, 24 edges and 12 faces
[(0.0, 0.0, 0.0), (0.0, 0.0, 3.0), (10.0, 0.0, 0.0), (10.0, 0.0, 3.0), (10.0, 0.2, 0.0), (10.0, 0.2, 3.0), (0.0, 0.2, 0.0), (0.0, 0.2, 3.0)]
[(0, 1), (1, 3), (0, 2), (2, 3), (2, 3), (2, 4), (3, 5), (4, 5), (4, 5), (5, 7), (4, 6), (6, 7), (6, 7), (0, 6), (1, 7), (0, 1), (0, 6), (0, 2), (4, 6), (2, 4), (1, 7), (1, 3), (5, 7), (3, 5)]
[(1, 0, 3), (3, 0, 2), (3, 2, 4), (5, 3, 4), (5, 4, 7), (7, 4, 6), (7, 6, 0), (1, 7, 0), (0, 6, 2), (2, 6, 4), (3, 7, 1), (5, 7, 3)]
"""
return {"vertices": vertices, "edges": edges, "faces": faces}
def toggleMesh(self, checked=False):
"turns mesh display on/off"
if FreeCAD.ActiveDocument:
if checked:
if self.mesh:
self.mesh.ViewObject.show()
else:
basemesh = Mesh.Mesh()
import ifcopenshell
from ifcopenshell import geom
s = geom.settings()
s.set(s.USE_WORLD_COORDS, True)
for product in self.products:
try:
m = geom.create_shape(s, product)
g = m.geometry
v = g.verts
f = g.faces
verts = [
FreeCAD.Vector(v[i:i + 3])
for i in range(0, len(v), 3)
]
faces = [
tuple(f[i:i + 3]) for i in range(0, len(f), 3)
]
omesh = Mesh.Mesh((verts, faces))
self.omeshes[product.id()] = omesh
basemesh.addMesh(omesh)
except:
pass
self.mesh = FreeCAD.ActiveDocument.addObject(
"Mesh::Feature", "IFCMesh")
self.mesh.Mesh = basemesh
self.mesh.ViewObject.Transparency = 85
FreeCAD.ActiveDocument.recompute()
FreeCADGui.Selection.clearSelection()
FreeCADGui.Selection.addSelection(self.mesh)
FreeCADGui.SendMsgToActiveView("ViewSelection")
else:
if self.mesh:
self.mesh.ViewObject.hide()
import ifcopenshell as ifc
from ifcopenshell import geom
settings = geom.settings()
settings.set(settings.USE_PYTHON_OPENCASCADE, True)
def getWallShapesFromIfc(fileName):
f = ifc.open(fileName)
# Get a list of all walls in the file
walls = f.by_type("IfcWall")
# Create a list of wall representation shapes
wall_shapes = []
for wall in walls:
# print("doing stuff")
shape = geom.create_shape(settings, wall).geometry
if shape:
# print("doing stuff22")
wall_shapes.append((wall, shape))
return wall_shapes
def getSlabShapesFromIfc(fileName):
f = ifc.open(fileName)
# Get a list of all walls in the file
slabs = f.by_type("IfcSlab")
# Create a list of wall representation shapes
slab_shapes = []
# code for debuging and implementation of rebar ifc importer
# code to copy for rebar import
# may be there are some HACK s
# there have been takes place renamming and moving methods and class
# ************************************************************************************************
# ifc import into rebar2 objects *****************************************************************
# ************************************************************************************************
# ************************************************************************************************
# use new rebar2 module
import ifcopenshell, rebar2, Part, Draft, os
import lattice2Placement, lattice2JoinArrays, lattice2Executer
from FreeCAD import Vector as vec
from ifcopenshell.geom import settings
prefs = settings()
prefs.set(prefs.USE_BREP_DATA, True)
prefs.set(prefs.USE_WORLD_COORDS, True)
prefs.set(prefs.INCLUDE_CURVES, True)
prefs.set(prefs.EXCLUDE_SOLIDS_AND_SURFACES, True)
path_to_rebar2 = rebar2.__file__.rstrip(os.path.basename(rebar2.__file__))
ifcfile = path_to_rebar2 + "example_01_two_stirrups.ifc" # imports :-)
# ifcfile = path_to_rebar2 + "example_02_channel_foundation.ifc" # imports :-)
# ifcfile = path_to_rebar2 + "example_03_crane_foundation.ifc" # does import crap, was exported with old Allplan exporter
# ifcfile = path_to_rebar2 + "example_04_vat.ifc" # imports :-)
f = ifcopenshell.open(ifcfile)
for rebar in f.by_type("IfcReinforcingBar"):
ifc_shape_representation = rebar.Representation.Representations[0]
ifc_swept_disk_solid = ifc_shape_representation.Items[
