Is there a way to select specific vertices (control points) on a nurbs surface? I'm working with a Nurbs Surface Circle, and want to select the highlighted vertices with Python.

enter image description here

I see this answer for mesh

As well as this answer for nurbs curve, but am not quite able to get it working. Here is my code thus far:

def execute(self, context):
    bpy.ops.curve.select_all(action = 'DESELECT')

    return {'FINISHED'} 
  • $\begingroup$ What doesn't work when you try the second answer? $\endgroup$ Feb 15 at 0:25
  • $\begingroup$ @MartyFouts it just creates a new curve on top of my existing surface circle. I don't really understand how to utilize it in my case $\endgroup$
    – Increality
    Feb 15 at 0:29

1 Answer 1


To access the control points of a nurbs curve, you first select the curve, then the spline within the curve, and finally the points within the spline:

import bpy

# Replace the next line with code to select your Nurbs Circle
curve = bpy.data.curves["NurbsCircle"]

# Since it's a Nurbs circle, there's only one spline
spline = curve.splines[0]

for index, point in enumerate(spline.points):
    print(index, point.co)

is an example that will print out all of the control points in a default Nurbs circle.

If you want, for instance, all of the selected points, you could use point.select:

for index, point in enumerate(spline.points):
    if point.select:
        print(index, point.co)

will print

2 <Vector (-1.0000, 0.0000, 0.0000, 1.0000)>
5 <Vector (1.0000, 1.0000, 0.0000, 0.3536)>

for this selection:

Nurbs circle with two points selected.

Instead of printing, you can do whatever you want with the control points, including selecting them by using something like point.select = True in the above loop.

You can read more about the fields in a Curve in the Blender manual

  • $\begingroup$ I copied exactly what you wrote into a new script with nothing else in it, "NurbsCircle" in that first line throws an error in this case. I do have the Nurbs circle in the scene. Tried changing the name to "SurfCircle", which fixes the error but does nothing: curve = bpy.data.curves["SurfCircle"] Am I doing something wrong? I also edited my question to show my original code. $\endgroup$
    – Increality
    Feb 15 at 17:57

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy

Not the answer you're looking for? Browse other questions tagged or ask your own question.