Cyclic containment hierarchy found in metamodel - will flatten the hierarchy and insert fake 'Model' root

[p4535992]

Hi I have converted an IFC to XKT and I get this errors when loading:

[ERROR] [Scene 1]: Cyclic containment hierarchy found in metamodel - will flatten the hierarchy and insert fake 'Model' root

HTTP GET TO XKT

xeokit-bim-viewer.es.js:1 [xeokit plugin TreeViewPlugin]: Failed to build storeys hierarchy for model 'design' - perhaps this model is not an IFC model?

here a screenshot on the browser:

I can't understand the error I am attaching the original ifc file and a zip file containing the project structure "index.json of the project" + "Models Folder" + "XKT Model".

Maybe is the XKT not converted in the right way ?

To overcome the limitation of github with the upload, the files have been renamed with the extension ".txt".

project.zip.txt
AC20-FZK-Haus.ifc.txt

[pierluigi-iezzi]

Did you find a fix for that problem? I have the same issue with the XKT file

[p4535992]

sadly no

[ptorrent]

same issue there, any news ?

[p4535992]

after a while i choose to use the docker image, here the shell you can use for test your ifc

#!/bin/bash

dockerimagename="bimspot/xeokit-converter"
# This is the ifc file
src_file="$1"
# This is the xkt file
target_file="$2"
target_file_name=$(basename $target_file)

echo "Starting $dockerimagename docker image"

containername=$(docker run --entrypoint /bin/sh -itd $dockerimagename)

echo "Started container with id $containername"
echo "Copying ifc file to container"

docker exec $containername bash -c 'cd /tmp ; mkdir working_dir'
docker cp $src_file $containername:/tmp/working_dir

echo "Updating tools if outdated"

docker exec $containername bash -c 'gltfoutput=$(gltf2xkt) ; if [[ ${gltfoutput} != *"-m"* ]];then
	echo "Gltf library requires an update, Updating";
	npm update -g @xeokit/xeokit-gltf-to-xkt;
fi'

echo "Starting ifc to xkt conversion"

docker exec $containername bash -c 'cd /tmp/working_dir; ls ; IfcConvert -v -y --use-element-guids '${src_file##*/}' file.dae --exclude=entities IfcOpeningElement ; ls ; COLLADA2GLTF -v --materialsCommon -i file.dae -o file.gltf ; ls; xeokit-metadata '${src_file##*/}' file.json ;  gltf2xkt -s file.gltf -m file.json -o '$target_file_name''

echo "Conversion complete. Copying container file to local dir"

docker cp $containername:/tmp/working_dir/$target_file_name $target_file

echo "Stopping and removing docker container"

docker stop $containername
docker rm $containername