Reading layers from file with Rhino.FileIO

Scripting
,
1

In setting up a function to read all the layers from a file via Rhino.FileIO -

image

I am trying to understand why this works:

import Rhino
path=r"C:\Users\Mitch\Desktop\ReadLayerTest.3dm"
file=Rhino.FileIO.File3dm.Read(path)
all_layers=file.AllLayers

image
image1704×250 4.78 KB

– but this doesn’t:

import Rhino
path=r"C:\Users\Mitch\Desktop\ReadLayerTest.3dm"
layer_filt=Rhino.FileIO.File3dm.TableTypeFilter.Layer
obj_filt=Rhino.FileIO.File3dm.ObjectTypeFilter.None
file=Rhino.FileIO.File3dm.Read(path,layer_filt,obj_filt)
all_layers=file.AllLayers

image
image1714×163 3.23 KB

Aren’t the optional arguments supposed to allow one to only read certain elements/tables from a file?

Or did I misunderstand how this is supposed to be used?

2

Hi @Helvetosaur,

Can you post your model?

Thanks,

– Dale

3

Hi Dale,

Sure, here it is. It isn’t really a “model” - it’s just a file with some empty layers as in the image in the first post.

ReadLayerTest.3dm (1.9 MB)