Cplane from Clipping Plane - Inconsistency

Rhino
1

When a Cplane is created from a clipping plane using Cplane with the Object option the Cplane is oriented with the clipping plane widget the first time a Cplane is created from the clipping plane. If the Cplane is rotated then any subsequent use of Cplane with the Object option creates a new Cplane the origin moved to the new center of the clipping plane widget but the new Cplane does not orient with the clipping plane widget. Rather it uses the orientation from the first time Cplane with the Object option was used with that clipping plane widget.

This behavior appears to have started in Rhino 8.

To replicate:

  • ClippingPlane to create a clipping plane
  • Rotate the clipping plane.
  • Cplane with Object option and select the clipping plane widget. The new Cplane will be oriented on the clipping plane widget.
  • Rotate the clipping plane.
  • Cplane with Object option and select the clipping plane widget. The new Cplane will not be oriented on the clipping plane widget. Instead it retains the orientation of the first time Cplane with Object option was used with that clipping plane widget.
2

Hi @davidcockey,

Thanks for reporting - https://mcneel.myjetbrains.com/youtrack/issue/RH-94811

– Dale

3

Thanks.

Will be great to have this fixed.

/Erik