Get the geometries inside blocks, based on layer(s)

[FuseArch (Vu)]

I use these elefront components for: get the block definitions and their instances, then extract the curves (C# component from this topic Dispatch by Geometry Type - Grasshopper - McNeel Forum )

there is a way to use Rhino GH component to get the same result, and also I want extract geometry belongs to specific layer(s) ?

[jessesn (Jessesn Chen)]

@FuseArch

there is a way to use Rhino GH component to get the same result, and also I want extract geometry belongs to specific layer(s) ?

Please give it a try with Query Model Block Definitons, Explode Object and Model Object.

• Query Model Block Definitons Grasshopper Online Document
• Explode Object Grasshopper Online Document
• Model Object Grasshopper Online Document

[FuseArch (Vu)]

Thanks. but when I tried , it just gave me the block at the original XY Plane, not all the instances.

[jessesn (Jessesn Chen)]

@FuseArch

Thanks. but when I tried , it just gave me the block at the original XY Plane, not all the instances.

Could please you share your 3dm file? Thank you.

[FuseArch (Vu)]

question.gh (10.6 KB)

question.3dm (69.6 KB)

[jessesn (Jessesn Chen)]

Bath load all blocks that have been placed in the scene, please refer to the discussion thread here,

Grasshopper Model Block Instance not listing all instances

You can use the Filter Content to filter block instances by block definition name. As you said, this only works for top-level names, so you do have to do some tricks to drill down into nested blocks. But something like this should work I think. [image] FilterBlockInstances.gh (16.5 KB)

[kike (Kike Garcia)]

Hi @FuseArch,

If you zoom in ‘Query Model Objects’ component you can pick the type of geometry you are after, in this case Block Instances.

To filter the objects there are a couple components that may help you here.

• ‘Filter Content’ it allows you to filter any kind of content based on a filter.
• ‘Match Text Filter’ used to filter based on some text matching.

You can also combine Filters using the ‘Logical And Filter’ like this to get only curves. In this case none.

question.gh (25.3 KB)

[FuseArch (Vu)]

Hi, do you know how to filter out the Text or Text Entity ?
My solution works but it looks not elegant.

[wim (Wim Dekeyser)]

Hi Vu -

@FuseArch

do you know how to filter out the Text or Text Entity ?

Please don’t double-post. This was answered here:

Dispatch by Geometry Type

[image] Filter by Object type and use either ‘Annotation’ or ‘512’ as value

-wim