Can we export the model with constraints using the three js exporter?

Hi, I have my model (it is an unique volume exported from rhino) and I followed all the tutorial instructions. The dots were generated but when I tried to run the "build" I obtanied an error: List index out of range

Can you help me to solve it, please?

Im trying to simulate the response of the model under an earthquake (Italy 2012), do you have any suggestion for the ground motion data?

[https://ibb.co/bZ3aFq] <- error pic

Hello, been experimenting with your simulation setup in Blender... Very nice work!

A question: we tried loading different models of various building shapes to see how well the simulation can handle them. They were exported from various other tools like SketchUp models, or others as .ifc. Most loaded successfully, descritization and running all preprocessing tools appears to work for most models, but some make Blender crash. In the console window there seems to be graph problems or odd edges and some other errors. The models that do complete however, with earthquake motion, appear to "explode" very intensely while your original model nearby appears to fall apart "normally" as per your simulation. This suggests our building material properties imported are not somehow set and may be too "light weight". How to easily configure the material building properties similarly to the multifamily building sample you have? Thanks!

I notice that when applying the constraints to elements, the elements are adjusted eg scaled down by a small %. A problem arises when copying such elements as these copies are scaled down also, and some elements no longer meet the minimal criteria that holds them to adjacent elements, hence they fall down as they are not connected to anything. This makes building blends difficult.

Is there a way to: 1) avoid the initial geometric adjustment of elements, 2) alternatively, is there a way to avoid geometric adjustments of copied elements that have constraints already assigned?

Dear Kai,
I want to learn BCB. When I follow the steps, when I click Discretize of Preprocessing Tools, the following error will appear

KeyError:"bpy_prop_collectiom [key]:key "Solidify" not found

I hope you can answer this question, thank you！

Its been about 3 years since the Blender 2.8+ series of versions have come out, and by now most Blender tools and artist have moved on to these versions. It would be very convinient to have a port for newer Blender versions, for example for usage with the Eevee renderer and the better multicore support.

I am working on the Standard Multi-Family House tutorial. I followed the steps in the tutorial, However, the building will always collapse without deleting any elements and simulating earthquakes. I run the preprocessing one by one, and then I load the configure data and build. If I run preprocessing steps automatically, I will not have the load configure data options. Thank you for your time to take a look at this issue.

Hi Kai,

I am learning to use BCB. What key should be pressed to achieve the effect of dividing buildings and viewing the interior, just like the effect in your video.

Thank you！

When creating a default element group eg RC Columns, then saving the .blend and exiting blender, reopen blender and open the previously saved blend, no Element Groups are shown in the list under the Bullet Constraints Builder.

I cant build and cant turn groups into element groups, when I try I get an error and I tried using the tutorial too, it could be that I am too unexperienced but I cant do it, here is the image and the blend file:
unfinished destruction.zip

Hi Kai,

can you please explain how to build constraints for masonary walls (masonary infills in RC frame structures) using the BCB add-on?
Thank you.

Wish you a great day!

Dear Kai,

is there a way to increase the time increment for the export of the displacement time history? Regardless of the steps per second I choose, the time increment for the displacement time history is always 0.04 s in the exported csv file which is in my case too inaccurate. Thanks in advance.

After preprocessing, I built the structure I made, but then all the objects became spaced out. I tried looking for a setting to disable this but it doesn't seem to exist.

Before building:

After building:

A common crash/error issue is reported by the Bullet Constraints builder when trying to clear the constraints. Once the error occurs (see screenshot) the blend can no longer be used by the bullet constraints builder tool and the constraints cannot be cleared as the error repeats each time.

Is there a way to reliably clear all constraints without this error occurring or is a fix needed? Appears to occur when deleting an element, then clearing the constraints, although this does not happen all the time.

Using v2.45 with blender 2.78a

Cheers

I can install the addon but when i click on the addon in blender to use it, it has a error code

Doesn't build, I'm not using your example projects, I got my own model and it doesn't build when I press the button
And sometimes when I press the build button blender gets stuck in the not responding state

My laptop has microsoft basic display adapter. When I try to open Blender 2.79 it keeps saying to update my graphics card even though it already up to date

Hi,
I am having issues trying to activate the installed BCB (latest version) on blender 3.4.1 about ;
'bpy.app' object has no attribute 'binary_path_python'

please see below screenshot for details

any help is appreciated,
thanks
Erhan

Dear Kai,

when I use the post-processing tool "Detect Cavities", the program loads very long and eventually crashes.
Any ideas how to remedy this issue?

Best

https://ibb.co/n6kg2DN

The 2.8 update has effectivly removed the toolshelf (which this plugin relys on).Will there be any update to the plugin or should I find some other way of doing this?

Dear Kai,

I am new to Blender and scripting, so this might as well be a general Blender thing, but since the affected method belongs to BCB, I thought I'd post here.

When I run the command bpy.ops.bcb.get_config() within the Blender Python console, it works like expected, i.e. the Element Group List is loaded correctly from file.


However, when creating this simple Python script mwe.py

import bpy
bpy.ops.bcb.get_config()

and calling it with blender --background "MY_BLEND_FILE.blend" --python mwe.py will produce the following error:

Traceback (most recent call last):
  File "<string>", line 1, in <module>
  File "C:\Users\...\mwe.py", line 3, in <module>
    bpy.ops.bcb.get_config()
  File "C:\Users\...\Blender 2.79\2.79\scripts\modules\bpy\ops.py", line 189, in __call__
    ret = op_call(self.idname_py(), None, kw)
RuntimeError: Error: Traceback (most recent call last):
  File "C:\Users\...\Blender 2.79\2.79\scripts\addons\kk_bullet_constraints_builder\gui_buttons.py", line 72, in execute
    warning = getConfigDataFromScene(scene)
  File "C:\Users\...\Blender 2.79\2.79\scripts\addons\kk_bullet_constraints_builder\build_data.py", line 409, in getConfigDataFromScene
    elemGrps = mem["elemGrps"]
KeyError: 'elemGrps'

location: C:\Users\...\Blender 2.79\2.79\scripts\modules\bpy\ops.py:189

Any idea why the command only works from within the Blender UI?

Dear Kai,

I would like to define clamped supports (Mx, My, Mz) on column bases. In the BCB add-on I can only find support conditions for X, Y and Z (under "Fix Foundation"). Can you please explain me how to define a support against moment action?
Thank you very much.