scottd
March 16, 2021, 3:27pm
1
We are announcing a new component we are testing. Call into CPython with a Grasshopper component.
Some advantages of this component:
Call into CPython libraries including Numpy and SciPy
Use some of the newest libraries available for CPython such as TensorFlow.
Create re-usable functions and parallel processing.
Supports real debugging modes including breakpoints.
Full support of Visual Studio Code.
Give it a try if you are interested.
Getting started with CPython in Grasshopper. Hops components.
Required:
Rhino 7.4 or newer. CPython 3.8 or above Hops Component for Grasshopper Visual Studio Code highly recommended
Video Tutorial:
For more information and examples see the ReadMe on GH Hops CPython project
This module can use its built-in default HTTP server to serve the functions as Grasshopper components, or act as a middleware to a Flask app. It can also work alongside Rhino.Inside.CPython to give full access to the RhinoCommon API
72 Likes
Very exciting ! Will it be possible to use the same approach from the Rhino python editor outside grasshopper?
scottd
March 16, 2021, 5:47pm
4
At this point, the Python editor is outside Rhino. The example shows using Visual Studio Code, but other Python editors are possible to use.
Using the built-in Rhino editor is a different project that would only come in the future.
1 Like
I mean having a script running in rhino via RunPythonScript which communicates with an external Cpython script, with no GrassHopper in the loop… For instance I frequently have to swap between Matlab files (which I can write with Scipy in Cpython) and Rhino geometry (which I manipulate, query with Ironpython outside Grasshopper)
2 Likes
stevebaer
March 16, 2021, 6:02pm
6
Dancergraham:
I mean having a script running in rhino via RunPythonScript which communicates with an external Cpython script, with no GrassHopper in the loop… For instance I frequently have to swap between Matlab files (which I can write with Scipy in Cpython) and Rhino geometry (which I manipulate, query with Ironpython outside Grasshopper)
I don’t see this working in the workflow of RunPythonScript, but we definitely could make it work like a Rhino command with a little effort. The same that we showed with getting a curve and a number and then returning a point could be made into a command that asked for a curve and a number and then added a point to the Rhino document.
2 Likes
To be clear I am definitely not asking to use the Rhino Python editor in place of my current external python editor (Pycharm)
bachman
March 17, 2021, 1:28am
8
Any news on when this might work with Rhino for Mac?
stevebaer
March 17, 2021, 1:33am
9
Sure, today
This should work on both Windows and Mac Rhino/Grasshopper
Can this work inside Blender to send data?
2 Likes
stevebaer
March 17, 2021, 3:31am
11
I would imagine so, but @nathanletwory would probably have a better idea of possible issues. We might need to tweak the ghhops-server library a little bit.
1 Like
jfreund
March 17, 2021, 4:03am
12
This is great, thanks. I copied Ehsan’s python script and I am getting this error from the Hops component:
Object 'Hops' {c69bb52c-88ba-4640-b69f-188d111029e8} failed to deserialize itself: Cannot deserialize the current JSON object (e.g. {"name":"value"}) into type 'System.Collections.Generic.List`1[Resthopper.IO.IoParamSchema]' because the type requires a JSON array (e.g. [1,2,3]) to deserialize correctly. To fix this error either change the JSON to a JSON array (e.g. [1,2,3]) or change the deserialized type so that it is a normal .NET type (e.g. not a primitive type like integer, not a collection type like an array or List) that can be deserialized from a JSON object. JsonObjectAttribute can also be added to the type to force it to deserialize from a JSON object. Path 'Outputs.Name', line 1, position 409.
The response at http://127.0.0.1:5000/pointat is:
{"Description": "Get point along curve", "Inputs": [{"Name": "Curve", "Nickname": "C", "Description": "Curve to evaluate", "ParamType": "Curve", "ResultType": "Rhino.Geometry.Curve", "AtLeast": 1, "AtMost": 1}, {"Name": "t", "Nickname": "t", "Description": "Parameter on Curve to evaluate", "ParamType": "Number", "ResultType": "System.Double", "AtLeast": 1, "AtMost": 1}], "Outputs": [{"Name": "p", "Nickname": "p", "Description": "Point on curve at t", "ParamType": "Point", "ResultType": "Rhino.Geometry.Point3d", "AtLeast": 1, "AtMost": 1}], "Icon": "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"}
I am using Python 3.9.1 in VSCode, Rhino 7.4.21067.13001 and Hops 0.4.5. Any help is greatly appreciated.
Thanks,
stevebaer
March 17, 2021, 4:17am
13
Can you send me the python script you wrote? I would like to see if I can repeat this and figure out a more useful error message to provide.
By the way, a version of what Ehsan wrote is available at
"""Hops flask middleware example"""
from flask import Flask
import ghhops_server as hs
import rhino3dm
# register hops app as middleware
app = Flask(__name__)
hops: hs.HopsFlask = hs.Hops(app)
# flask app can be used for other stuff drectly
@app.route("/help")
def help():
return "Welcome to Grashopper Hops for CPython!"
@hops.component(
"/binmult",
inputs=[hs.HopsNumber("A"), hs.HopsNumber("B")],
show original
bachman
March 17, 2021, 6:25am
14
I don’t see a way to install Hops on Rhino for Mac. Am I missing it? It’s not showing up in package manager.
bachman
March 17, 2021, 6:29am
15
Ah. Sorry. I was using the Rhino 8 WIP. I see it in Rhino 7. I assume this will make it to the WIP soon?
Looking forward to playing with it!
mistrymm7
March 17, 2021, 6:36am
16
This is incredible. It will open up so many possibilities with grasshopper
1 Like
Can’t wait to dig into this, unfortunately haven’t been able to install the ghhops server via the Quick Start guide. I received a massive set of error messages in my command line when pip install ghhops-server. (see image attached)
I’m using:
Python 3.9
Rhino (7.4.21067.13001, 2021-03-08)
ghhops 0.4.5
Any advice for troubleshooting?
Thanks!
mistrymm7
March 17, 2021, 11:40am
18
@kai , looks like its throwing error related to rhino3dm. maybe installing rhino3dm might help.
1 Like
mistrymm7
March 17, 2021, 11:41am
19
Couldnt wait doing some experiments with it. Developed some components in gh using opencv.
6 Likes
stevebaer
March 17, 2021, 11:43am
20
kai.aurelien.zhu:
I’m using:
Python 3.9
Rhino (7.4.21067.13001, 2021-03-08)
ghhops 0.4.5
The errors are coming from a 32 bit version of python 3.8 on your system. We may not be currently supporting 32 bit builds for python with rhino3dm; I would need to double check. Is there a reason you need 32 bit python?
If you think you are using Python 3.9, maybe you can uninstall this older 32 bit Python 3.8
1 Like
