Grasshopper control clipping plane with plane input

Grasshopper
,
1

Hello does anyone know about some C# or python script which allows to control a clipping plane with a plane. I know about referencing clipping planes as guides and have found some older C# scripts which should work but arent for me. got a error message which poped up infinitly so I had to say show no more which is why i cant post it here (forgot to copy). but as far as i remember it said something about a part of the script being outdated

this is the code

var cp = new Rhino.DocObjects.ObjRef(id);
var source = cp.ClippingPlaneSurface().Plane;
RhinoDoc.ActiveDoc.Objects.Transform(id, Transform.PlaneToPlane(source, pl), true);

forum link Reference a clipping plane in grasshopper

ideally the script should create the clipping plane first from the plane. would make referencing from rhino obsolete

any help would is appreciated

2

control_clipping_plane.gh (9.6 KB)

create your geometry and your clipping plane. in grasshopper, right click on guid and get the clipping plane

3

thank you for the quick help but sadly im missing python 3. is there any easy way to update to python 3

4

control_clipping_plane_py2.gh (10.5 KB)

5

sorry to bother but it still seems like the python compoent how can in install it.
or maybe its easier to just post the code

6 
"""Grasshopper Script"""
import Rhino

cp = Rhino.DocObjects.ObjRef(x)
source = cp.ClippingPlaneSurface().Plane
RhinoDoc.ActiveDoc.Objects.Transform(
    x, Rhino.Geometry.Transform.PlaneToPlane(source, y), True)
7

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getting some error

8

Should dissapear when you connect the guid to x and plane to y

9

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they are connected. the error disappeared after I referenced a new guid. But now there is a new error

10

Instead of RhinoDoc.ActiveDoc first import scriptcontext as sc, then you can do : sc.doc.Objects.Transform()-call.

11

At the top add

import RhinoDoc

12

thank you gives no error bu also nothing gets clipped now

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13

gives me: Runtime error (ImportException): No module named RhinoDoc

14

Btw, what version of rhino are you on?

15

Rhino 7 SR36 2023-12-12

16

FWIW you are not making any changes to the plane you get from the clipping plane, like is done in this reply Reference a clipping plane in grasshopper - #5 by Mahdiyar .

And you need to make sure that the clipping plane is set to clip in the viewport you’re looking at:

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17

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for me it seems not to work. maybe i do not understand how it should work?

18

Ah right, of course you need access directly to ActiveDoc because Grasshopper.

This script works:

__author__ = "jesterking"

import Rhino

# create an ObjRef
_cp = Rhino.DocObjects.ObjRef(cp)
# get the Plane out from the clipping plane
_cppl = _cp.ClippingPlaneSurface().Plane
# now transform the clipping plane by passing its GUID
# and a new transform that is created from the clipping
# plane to the new plane
Rhino.RhinoDoc.ActiveDoc.Objects.Transform(
    cp,
    Rhino.Geometry.Transform.PlaneToPlane(
        _cppl,
        plane
    ),
    True
)

It works with this definition:

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The model has a box and one clipping plane, the definition will allow you to move the clipping plane on the Y axis.

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ClippingPlanePython.3dm (2.8 MB)
ClippingPlanePython.gh (9.7 KB)

19

thanks alot works fantastic

20

Is there an easy way to dynamicaly create guides / clipping planes along with the input planes ?
Im thinking about iterative processes with different counts of clipping planes