topic Re: Grasshopper + Python json Addon in Parametric design

Grasshopper + Python json Addon

greg_lupo — Thu, 11 May 2023 09:03:33 GMT

Is it possible to write custom GH python nodes that could use archicad module?
GH works on Ironpython 2.7.5 and 'archicad' python module works on python 3.7.
Any ideas how to combine it?

Re: Grasshopper + Python json Addon

runxel — Fri, 21 Aug 2020 12:31:43 GMT

I believe this is possible.
You basically need to skip the official Python package and just do it "by hand".
First result on google on the Rhino forum.
See also the JSON interface docs.

Re: Grasshopper + Python json Addon

JSN — Tue, 19 Jan 2021 08:17:35 GMT

Has anybody made some progress with it so far, or can tell if it's worth the effort to try it out?

Re: Grasshopper + Python json Addon

leceta — Tue, 19 Jan 2021 13:40:06 GMT

I made a quick test a while ago, it worked fine. It's a json api call made from GH python component. As I dont have much time to work on this topic (and time goes on), let me share the piece of code with you. It just collect guid data for Archicad document (pretty dumb, don't expect anything fancy) but hopefully will guide someone on further developing useful logic. In theory this gives access to every function exposed in the JSON API from grasshopper (primarily attributes, drawing and views programmatical gets/sets)

__author__ = "leceta"
__version__ = "2020.03.27"

import json
import urllib2
if run:
    req = urllib2.Request('http://localhost:19723')
    response = urllib2.urlopen(req,json.dumps({"command":"API.GetAllElements"}).encode("UTF-8"))
    result = json.loads(response.read())
    id = []
    for element in result['result']['elements']:
        id.append(element['elementId']['guid'])
    result = [response]

Re: Grasshopper + Python json Addon

JSN — Tue, 19 Jan 2021 15:08:51 GMT

Thx, that looks promising, however it givs me an url error.

Might be related to our IT restrictions but actually it should work ... any ideas?

EDIT: OK, seems to only work when AC is not in Admin Mode while Rhino has to be running as admin.

Re: Grasshopper + Python json Addon

leceta — Sat, 13 Feb 2021 09:39:27 GMT

also of interest the next thread
https://archicad-talk.graphisoft.com/viewtopic.php?f=23&t=71977