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Dion Moult
63 lines
2.9 KiB
Markdown
63 lines
2.9 KiB
Markdown
# Blender BIM IFC
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_Under heavy development!_
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Let's use Blender to create BIM models, because why not?
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## Features
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- IFC4 is a first-class citizen. IFC4 has been an ISO standard since 2013, with
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the latest published in 2018. In contrast, other programs are dragging their
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feet with IFC2X3, published back in 2005.
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- Use Blender to do digital modeling! Blender is an amazing open-source
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software that supports the full 3D content creation pipeline that the CG
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industry uses. Don't let your designs fall short just because your modeling
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tool isn't good enough!
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- Create complex spatial structures with multiple sites, buildings, facilities,
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bridges, and building parts. In contrast, some BIM tools (uh, Revit?) don't
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even allow you to specify buildings.
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- Classify any geometry as any IFC type. Just because it is a wall doesn't
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mean you should be limited to modeling it in a certain way. Easily change
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from one type to another without damaging your geometry.
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- Allow BIM objects to instance a shared geometric representations. This allows
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you to place the same shape in multiple objects without drastically
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increasing your filesize.
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- Provide a custom value to any simple IFC attribute of an IFC product.
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- Create product types that regular IFC products can inherit attributes from.
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- Define your own property sets with control over exactly how the data in the
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property sets are stored.
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- Applies array modifiers to create instances.
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## Demo
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It's only just started, so everything can and will change. But if you want to
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check it out:
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1. Install [Blender](https://www.blender.org/).
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2. Install [IfcOpenShell](https://github.com/IfcOpenShell/IfcOpenShell),
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ensuring that is is compiled to the same Python version and architecture of
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your Blender installation.
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3. Launch Blender. Open `untitled.blend`. You should see the `export.py`
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script already loaded. Change the hardcoded paths from
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`/home/dion/Projects/blender-bim-ifc/` to wherever you've cloned this
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repository.
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4. Ensure `ifcopenshell` is in your Blender Python's path, so that it can
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`import ifcopenshell`. You can run
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`sys.path.append('/path/to/your/ifcopenshell/module')` in the Blender Python
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console to do this.
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5. Select all objects that you want to export. Press `Run Script`, and you will
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get the results in `output.ifc`.
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A naming convention of `IfcClass/IfcName` is enforced. If you name your object
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`IfcWall/Foo`, it will turn into an `IfcWall` with the name attribute set to
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`Foo`. You can override object attributes using Blender's `Custom Properties`.
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Your objects must live in a top level `Collection` defined as a context class,
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usually something like `IfcProject/Foo`. You can then nest spatial structures
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underneath to create a hierarchy.
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... this Blender files creates this IFC file ...
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