List of Formats, Libraries and plugins

[unitycoder]

Post links here for (open source) libraries and plugins that could be used in Unity (runtime) CAD Import and Export

Preferred solutions (in this order)

• c# compatible libraries / frameworks (as sources or dll's)
• native dll plugins with c# bindings (or possible pinvoke could be used)
• external simple commandline converter tools (that could be used to convert from cad format(s) into some common formats (fbx, obj..)
• source from other languages, that could be converted into c#

Common CAD formats that would need runtime importers (see more formats)

• STEP (i'd consider this high priority, as its one of the most common interchange formats)
• DWG
• DXF (would be nice to have 2D layout imports too)
• STL
• IFC (would be nice to import meta data also)
• IGES

[agarcialeon]

I can't help much with libraries. I only remember that PIXYZ was one of the importers that Unity integrated for CAD. Check in the UnityCommunity repository, inside Importers/Exporters section.

Anyway, which is the purpose of this repository?

[unitycoder]

this would be for an open source runtime multiple cad format importers (and later some export formats could be added also).

Pixyz is definitely best solution at the moment (but of course its paid only).

[unitycoder]

stp

• import https://github.com/anycad/StpViewer
• import/export https://github.com/ixmilia/step
• export https://github.com/drGsus/simple-step-exporter

iges, stp, stl, wrl, 3dxml

• import https://github.com/i2e-haw-hamburg/cad-in-unity (quite old repo though)

ifc

• https://github.com/xBimTeam/XbimEssentials

[unitycoder]

fbx export

• https://github.com/KellanHiggins/UnityFBXExporter
• https://github.com/unity3d-jp/FbxExporter
• https://github.com/Ymiku/UnityFBXExporter

fbx import

• https://github.com/mpreble/UnityFBXImporter
• https://github.com/izrik/FbxSharp

fbx import/export

• https://github.com/hamish-milne/FbxWriter
• https://github.com/Unity-Technologies/com.unity.formats.fbx
• https://github.com/Hoetan/FBXImporterExporterForUnity_20181015

fbx, maya export

• https://github.com/newyellow/Unity-Runtime-Animation-Recorder

[Rickmc3280]

Currently working to convert IFC++ (http://www.ifcquery.com/) ( Github: https://github.com/ifcquery/ifcplusplus)
Over to C# May take a while. Spent 6 hours last night on it. Apparently one of the ways that he made it efficient was using pointers, so having to connect it back to regular variables is meh. Will try to do pointers as well if @unitycoder can help with that once done. Ill have to label which ones to make as pointers. It def helps to speed it up.

Also reattaching these:

stp

import https://github.com/anycad/StpViewer
import/export https://github.com/ixmilia/step
export https://github.com/drGsus/simple-step-exporter

iges, stp, stl, wrl, 3dxml

import https://github.com/i2e-haw-hamburg/cad-in-unity (quite old repo though)
ifc

https://github.com/xBimTeam/XbimEssentials

fbx export

https://github.com/KellanHiggins/UnityFBXExporter
https://github.com/unity3d-jp/FbxExporter
https://github.com/Ymiku/UnityFBXExporter

fbx import

https://github.com/mpreble/UnityFBXImporter
https://github.com/izrik/FbxSharp
fbx import/export

https://github.com/hamish-milne/FbxWriter
https://github.com/Unity-Technologies/com.unity.formats.fbx
https://github.com/Hoetan/FBXImporterExporterForUnity_20181015

fbx, maya export

https://github.com/newyellow/Unity-Runtime-Animation-Recorder

[unitycoder]

unity assimp wrapper (40+ mesh formats, JT, IFC, STL..)
https://github.com/eastskykang/UnityMeshImporter

[unitycoder]

ifc dotnet
https://github.com/xBimTeam/XbimEssentials

[unitycoder]

tested step importing: (their sample file, or regular small step file)

• (not working in unity) https://github.com/i2e-haw-hamburg/cad-in-unity
• (not working in unity) https://github.com/ixmilia/step
• (works in winform build, but requires license) https://github.com/anycad/StpViewer

[unitycoder]

STL import (using Rust plugin)
https://github.com/unitycoder/UnityRustStl

[AlejandroGCr]

GLTF importer (exporter not implemented yet)
https://github.com/Siccity/GLTFUtility

[unitycoder]

FBX glTF importer/exporter plug-in and converter
https://github.com/cyrillef/FBX-glTF

[anksji]

I'm exploring runtime import and export options for WebGL builds in unity. I've reviewed options like Trilib and various glTF libraries, but they don't meet my requirements. I'm also looking into using Assimp in Unity WebGL. Could you suggest a straightforward and efficient solution? @unitycoder I have one more question does Pixyz supports run time import/export?

[unitycoder]

Pixyz supports run time import/export?

from what i've read, it doesn't work in webgl and that gltf would be the recommended for that..
(but not sure whats current status)

recently tested this https://github.com/eastskykang/UnityMeshImporter
for runtime fbx, but the mesh was broken in some parts..

then tried this https://github.com/atteneder/glTFast *this is apparently best glft importer, and it does read quite fast.
but the gltf mesh had more parts than the original fbx file and fails on large +3gb files)