Pasting a Grasshopper file in c# or ghPython

Grasshopper
, ,
1

Hi there,

I was wondering whether someone has found a solution to programmatically pasting a grasshopper file ,using its file path, to the current canvas you are working in via GhPython or C#.

Let me know,

2

Hi @kdaw long time no see, hope you are doing well.

There is a method on GH_Document to merge in another doc, which can be used for that. See the attached example script.

import_gh_file.gh (3.5 KB)

You would probably want to extend the script to support a custom undo/redo flag, since this operation is not undoable by itself. Also Iā€™m not sure how well this behaves with gh files that contain clusters, as they are conceptually like nested files.

# run is an input on the gh component
# path is an input on the gh component

import Grasshopper
import clr
clr.AddReference("GH_IO.dll")
import GH_IO as gio

def get_active_doc():
    canvas = Grasshopper.Instances.ActiveCanvas
    if canvas is None:
        return None
        
    return canvas.Document

def archive_to_doc(archive):
    """
    Convert a GH_Archive to a GH_Document
    """
    
    doc = Grasshopper.Kernel.GH_Document()
    if(not archive.ExtractObject(doc, "Definition")):
        return None
        
    return doc

def main():

    archive = gio.Serialization.GH_Archive()
    archive.ReadFromFile(path)

    if archive is None:
        print("Failed to read gh file at input path")
        return 

    doc = archive_to_doc(archive)
    if doc is None:
        print("Failed to create doc from input path")
        return
        
    active_doc = get_active_doc()
    if active_doc is None:
        print("Failed to retrieve active doc")
        return
        
    result = active_doc.MergeDocument(doc, True)
    if not result:
        print("Failed to insert other document")

if run:
    main()
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