How to add a IfcVoidingFeature (Add Void)

RaphaëlVouilloz

Hello,
When using the "Add Void" tool, if I change the class in the menu below:

The menu updates to that:

which looks like a bug
Then, I cannot change the class of the IfcOpeningElement to IfcVoidingFeature:

Any workaround?
Thanks

steverugi

@RaphaëlVouilloz

please try

Method 1

1. place your 3D cursor where you want the void to be applied
2. from the menu "Add" select
   • Definition: IfcFeatureElement
   • Class: IfcOpeningElement
   • PredefinedType: Opening
   • Featured Object: the object to apply a void
   • Representation: chose what you prefer
   • Edit the geometry making the void with 2xTab
   • Contexts: leave it as is
3. Alt-O to exit

OR..

1. select wall (if the case)or Multi Object Tool from left (T) menu
2. place the 3D cursor where needed
3. use Shift+O to create a void
4. edit the void
5. Alt+O

I personally find the first method useful when I want to use an existing object to make a void
maybe there are other ways?
cheers

RaphaëlVouilloz

Thanks @steverugi !
I was not aware of method 1, which works smoothly

Julian

Noob question, how do I resize the 3rd dimension? If I'm understanding correctly these are an extruded polygon? The above shows me how to adjust the size of the polygon (X & Z in the 2nd vid), how do I adjust the extruded distance in the Y direction?

theoryshaw

like this: https://community.osarch.org/uploads/editor/ub/hmws550b31ax.mp4

FranSeoane

Is there a way to associate/join a single opening "IfcOpeningElement" to a window or door?
I usually create the single IfcOpeningElement on the wall, and then add or move the single window or door.
I don't know if there's a way to associate/join IfcOpeningElement + IfcWindowType so that when I insert the window into a wall, the opening and the window are created simultaneously, just like when using parametric windows/doors.
Thanks!

Julian

@theoryshaw
Thank you, I was searching everywhere in wall tool, I didn't know I needed to switch to multi object tool and IFC Item Mode.
I've been wondering how to create tapered openings too like those in @FranSeone's screenshot, that's explained now as well.
Cheers
julian

theoryshaw

Is there a way to associate/join a single opening "IfcOpeningElement" to a window or door?

I'm not sure how to do it after the fact, but I usually start with creating a tessellated window in the type launcher, and then it has the associated opening.
If you already created a window without the opening and later want to add one, I do the the following workflow. That is, create a new window via the launcher and then 'join' the geometry of the window you'd like to have an opening.

FranSeoane

@theoryshaw Thanks!

If you already created a window without the opening and later want to add one, I do the the following workflow. That is, create a new window via the launcher and then 'join' the geometry of the window you'd like to have an opening.

It is not necessary to start from a parametric window.
You can start by modeling a .blend window, and the moment you assign the IfcWindowType, an IfcOpeningElement associated with the type is automatically created.
The problem is that the created Opening is generated from a "Custom Extruded Solid", which means we cannot generate a unique Opening like a conical trunk or similar.
The solution would be to be able to choose, to generate that opening, between a "Custom Tessellation" or a "Tessellation from Object".
I suppose this isn't yet possible in Bonsai.

RaphaëlVouilloz

@FranSeoane said:
@theoryshaw Thanks!

If you already created a window without the opening and later want to add one, I do the the following workflow. That is, create a new window via the launcher and then 'join' the geometry of the window you'd like to have an opening.

It is not necessary to start from a parametric window.
You can start by modeling a .blend window, and the moment you assign the IfcWindowType, an IfcOpeningElement associated with the type is automatically created.
The problem is that the created Opening is generated from a "Custom Extruded Solid", which means we cannot generate a unique Opening like a conical trunk or similar.
The solution would be to be able to choose, to generate that opening, between a "Custom Tessellation" or a "Tessellation from Object".
I suppose this isn't yet possible in Bonsai.

A Custom Extruded Solid isn't necessary "box-shaped". You can can achieve more advanced shapes by editing the profile, adding volumes, or cutting them by half spaces:

RaphaëlVouilloz

A Custom Extruded Solid isn't necessary "box-shaped". You can can achieve advanced shapes by editing the profile, adding volumes, or cutting them by half spaces.

FranSeoane

@RaphaëlVouilloz said:
A Custom Extruded Solid isn't necessary "box-shaped". You can can achieve advanced shapes by editing the profile, adding volumes, or cutting them by half spaces.

I wasn't aware of this option for modeling the Opening with IfcHalfSpaceSolid.
Great, it's another valid method until we have the option to select: "Custom Tessellation" or a "Tessellation from Object".
Thanks!