Flip objects along X axis straight from Top view?

Rhino
, ,
1

I do work with a lot of objects that I do need to flip them (rotate 180degrees) on the other side along the X axis, so the bottom becomes the top, looked from top view.

Right now to accomplish this task, I do need to switch between Top view, to Perspective view, zoom to the object, search the gumball Green rotation handle, type 180 and after that it is flips upside-down.

I am searching to speed up this repetitive process and for this, I do need some help if possible.

Maybe somebody can help-me with a script or method with witch I can do all this steps straight from the Top view.

180_Flip_along_X_axis
180_Flip_along_X_axis1143Ă—329 30.8 KB

180_Flip_along_X_axis_before_after
180_Flip_along_X_axis_before_after1345Ă—562 20.7 KB

180_Flip_along_X_axis.3dm (112.9 KB)

2

Maybe this works?

"""Provide angle in degrees and axis vector as input arguments at bottom
Each object rotates about its own center."""

import rhinoscriptsyntax as rs
import Rhino

def RotateObjsAroundBBCtrAxis(deg,axis):
    msg="Select objects to rotate {} deg.".format(deg)
    geo=rs.GetObjects(msg,preselect=True)
    if geo:
        rs.EnableRedraw(False)
        for obj in geo:
            bb=rs.BoundingBox(obj)
            if bb:
                xform=rs.XformRotation2(deg,axis,(bb[0]+bb[6])/2)
                rs.TransformObject(obj,xform)
                
RotateObjsAroundBBCtrAxis(180,Rhino.Geometry.Vector3d.XAxis)

(I’m sending this from my phone, so I haven’t tested…)

1 Like
3

Thank you for the reply.

One silly question. This script needs to have the .rvb extension?

I do get an error when running the script.

Line: 1
Char: 25
Error: Expected end of statement.
4

No, this is a Python script. You can save it as a .py extension and run it with _RunPythonScript.

5

Thank you. It is working now.

6

OK, cool. You might need to change the last line XAxis to YAxis if you want it to flip in the other direction.

1 Like
7

thanks Helvetosaur!

a year later…:
I also used your script…
to rotate numbers that needed to be engraved on a double sided table top.
I was especially looking for the individual rotation…
…grasshopper still too time consuming to figure out for me…