Import step export ifc
- hanslammerts
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Import step export ifc
Hi, could you dive in the translation between inporting step and exporting ifc? The thing is parts are not recognized and translated to unique ifc members. Freecad has the potential to be a great help for ifc translation. But this geometry malfunction has to be corrected imo.
See att.
Kind regards
Hans
See att.
Kind regards
Hans
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- Screenshot_20191026-140610_Gallery.jpg (412.79 KiB) Viewed 10419 times
Re: Import step export ifc
I have been using FreeCAD for step2ifc for years too.
Would you post some simple example geometry you have problems with?
Would you post some simple example geometry you have problems with?
- hanslammerts
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Re: Import step export ifc
What is step2ifc? The step files come from Inventor and AutoCAD.
Re: Import step export ifc
@Hans it's almost impossible to know the problem if you just say "it doesn't work", and we have no clue in your screenshots..
Normally importing step files should work fine, and exporting them to ifc too, as Bernd says, many people have been doing this for a long time. There could be some problem in your step file, or a specific object that is hard to translate for some reason. But it's impossible to know without trying or at least seeing ourselves. Could you attach here a problematic step file?
Normally importing step files should work fine, and exporting them to ifc too, as Bernd says, many people have been doing this for a long time. There could be some problem in your step file, or a specific object that is hard to translate for some reason. But it's impossible to know without trying or at least seeing ourselves. Could you attach here a problematic step file?
Re: Import step export ifc
Also I *think* IfcOpenShell is now able to convert step files to ifc directly... That might be a faster, alternative option.
CadExchanger does it too, but it's not free
CadExchanger does it too, but it's not free
- hanslammerts
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Re: Import step export ifc
Here is the step file. Let me know what you think.
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- hanslammerts
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Re: Import step export ifc
Btw that ifcopenshell has no graphic interface, only some dos like commandline. Maybe somebody else knows how to kickdtatt it. Not me
Re: Import step export ifc
This is what I use FreeCAD for. Load the ifc into FreeCAD Gui, export the modell from FreeCAD to ifc. One could write this in a small python script. Hey in conjunction with tornado webserver we could make a online converter from this easily ...hanslammerts wrote: ↑Mon Oct 28, 2019 7:08 am What is step2ifc? The step files come from Inventor and AutoCAD.
Nevermind here is what hans would like to convert. Not an easy job for FreeCAD ...
This is what FreeCAD exported without any special user interaction, just export. Wow . I rember years ago I had to make the meshes manually because the export was not as good as expected.
The only disadvantage ... The file is 62 MB due to meshing all surfaces. But other CAD would not do any better. Allplan even meshes cricular columns ...
BTW IFC4 supports nurbs, but this does not yet work as it should do. I did some tests and have been in contact with thomas in this regard. There is an issue on ifcopenshell github. https://github.com/IfcOpenShell/IfcOpenShell/issues/586 which links to an topic on BuildingSmart (https://forums.buildingsmart.org/t/dwg- ... ifc/1970/4) which shows some known geometry hans
Re: Import step export ifc
With the NURBS stuff, IFC can reach the same level of accuracy and shape fidelity as STEP... We should really start testing this more (in FreeCAD, IFC options -> Use serializer). The only unfortunate thing is that only IfcOpenShell so far seems to support it well, so it's hard to test with other apps
Re: Import step export ifc
Does ifcos support export too? This would be a good start. Write and read them.