Creating Roof Geometry using ifcopenshell/blenderbim
Hello everyone!!
I am trying to create a simple hipped roof geometry to an ifc project. I am trying to use the blenderbim function "blenderbim.bim.module.model.roof.GenerateHippedRoof()" and unfortunately i can not figure out what is passed to "obj" argument.
Thank you in advance!
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select the plane beforehand, i believe.
https://www.dropbox.com/s/x92ukpijcimmf4v/2023-03-21_17-45-15_Blender_blender.mp4?dl=0
you can do it this way too: https://www.dropbox.com/s/qzj4d2lzuyf9mzk/2023-03-21_18-54-30_Blender_blender.mp4?dl=0
@theoryshaw are you may be able to help me too please :)
using Blender 3.4.1 BBim 0.0.230304 Win10
all I create is the following...
Python: Traceback (most recent call last):
File "C:\Users*******\AppData\Roaming\Blender Foundation\Blender\3.4\scripts\addons\blenderbim\tool\ifc.py", line 126, in execute
IfcStore.execute_ifc_operator(self, context)
File "C:\Users*******\AppData\Roaming\Blender Foundation\Blender\3.4\scripts\addons\blenderbim\bim\ifc.py", line 427, in execute_ifc_operator
result = getattr(operator, "_execute")(context)
File "C:\Users\nigel\AppData\Roaming\Blender Foundation\Blender\3.4\scripts\addons\blenderbim\bim\module\model\roof.py", line 46, in _execute
shapely.LineString([obj.data.vertices[edge.vertices[0]].co, obj.data.vertices[edge.vertices[1]].co])
AttributeError: module 'shapely' has no attribute 'LineString'
@Nigel i think that problem is caused by non updated version of shapely module.
You could update manually to the shapely last version (2.something) or you could try with a fresh bbim installation, that, in theory, is shipped with the last version of shapely
@theoryshaw that can be a solution, but I am trying to create a roof geometry with the code.
I have this IFC file with four walls and I want to create a hipped roof from the wall boundary. With the new version of blenderbim, there is the GenerateHippedRoof(obj, mode, height, angle) function. I am struggling to create mesh plane out of the wall boundaries to feed into the obj argument.
The point where I got stuck is:
import ifcopenshell
import blenderbim
import bpy
objs = bpy.context.visible_objects[:-3]
boundary_lines = []
for obj in objs:
boundary_lines.append[obj.data.edges]
Another method I am trying to get to the final result is through: wall.Representation.Representations.Items - which outputs the IfcPolyline. And I am stuck again at the point where all these polylines have to be connected into a polygon -> plane -> mesh plane and at the end the roof.
Can you hint the next steps I have to take, or some required methods/functions to use in the code?
Thank you in advance!!!
I'm a novice too, but does this help you get started?
Would imagine you could get the 'verts' from decomposing the Plan/Axis/GRAPH VIEW/Curve2D line representation of a wall type instance.
then use the verts to create the plane mesh, then feed that into obj attribute of GenerateHippedRoof method.
we're screwed! ;)
