ifcModel.ifcManager.getPropertySets(...) slow

[gyszalai]

I have a fairly large model (cca. 15MB), that is loaded in a few seconds, but calling model.ifcManager.getPropertySets(...) is very slow (100-150ms) for each IFC element. Other getters, like getItemProperties or getAllItemsOfType respond in a few milliseconds.

import { IFCLoader } from 'web-ifc-three/IFCLoader'
import { IFCWALL } from 'web-ifc'

const ifcLoader = new IFCLoader()
await ifcLoader.ifcManager.setWasmPath('')

const ifcModel = await ifcLoader.loadAsync(ifcURL)

console.time('getAllItemsOfType')
const walls = await ifcModel.ifcManager.getAllItemsOfType(0, IFCWALL, true)
console.timeEnd('getAllItemsOfType')

const ifcElement = walls[0]

console.time('getItemProperties')
const ipemProps = await ifcModel.ifcManager.getItemProperties(0, ifcElement.expressID, false)
console.timeEnd('getItemProperties')

console.time('getPropSets')
const propSets = await ifcModel.ifcManager.getPropertySets(0, ifcElement.expressID, false)
console.timeEnd('getPropSets')

output:

getAllItemsOfType: 10ms - timer ended 
getItemProperties: 1ms - timer ended
getPropSets: 100ms - timer ended

Link to the model: https://drive.google.com/file/d/1eFqOh0TX7FmuYG5Zys1l61VtjAfFW4um/view?usp=sharing

I would like to process the whole IFC model and transform it to a structure that I can analyse easily. But the transformation takes too long time for the model above as the getPropertySets function is called for each element in the model.

Am I doing something wrong?

[abaldacci]

Hi,

same problem here, but my model is just 2mb. Any updates on this?

I am using library latest version 0.0.121.

I have tested also with older versions (till 0.0.100). Same problem: up to 70 ms to for a single call to getPropertySets.

The version included in threejs is a lot faster.

[aka-blackboots]

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[agviegas]

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[aka-blackboots]

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[agviegas]

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Hi, @aka-blackboots! Thanks for giving it a try! It’s now once again available for anyone to take.