(Bug) _reflect and several commands

Rhino SubD
1

Version 8 (8.6.24101.05002, 2024-04-10)

after applying reflect (along y) to an subD the following commands are buggy or don t work at all:
bridge
inset
bevel

… just preparing a lecture - sorry no time for more details… maybe laters or others have the same experience / examples ?

2

Hi Tom - thanks - the developer has fixed a few of these already, I’ll check these.

Here, Inset works, Bevel fails, and Bridge is just weird.

RH-81580 Bevel - fails with Reflect
RH-81581 Bridge - incomplete with Reflect

-Pascal

3

thanks pascal - I try to post an example with failing inset later.

with bridge there is a one special case - adding additional faces with a bridge should be handled… (meaning it is not a bridge from existing faces to existing faces, but from the subD with reflect to for example a SubDPlane that closes a hole - i will post an example for this later)

4

Inset

here is one where a simple _subDBox with _reflect along the y-Axis does not show preview for
_inset
while entering the distance:

and also - not on the video:
start _inset
click first reference point for distance.
now it is not possible to press Enter to finish the command, nor is it possible to finish with the old or another numeric value.

Bridge

ok I am asking some level of magic here - or at least a nice error message / fail description.
using _bridge to add additional faces to a reflected SubD fails.
The behaviour varies:

  • the geometry is created as expected on the reference side, but reflection is lost (video)
  • bridge fails, the geometry is deleted.
5

_radiate + _insertPoint

insertPoint does not work for geometry with radiate N=5

and there is a fancy scrolling glitch of the command history.
caught on cctv:

6

looks like “reflected” subd’s still need some love :heart:

thanks for having a look at those issues that still exist in Feb. 2026 - see this topic
@pierrec - are you the right person to look at this ?

there is another issue

vertex survives deleted edge

draw a torus and add _reflect in x and y

image
image1103×962 80.4 KB

delete an edgeloop
image
image1103×962 79.6 KB

the vertices at the symmetry-plane survive:
image
image1103×962 57.4 KB

subd_reflect_deleteEdgeLoop.3dm (3.6 MB)

7

Hi @Tom_P, I just went through all your reports and linked them to old or new tickets in our tracking system. Thanks for the time spent reporting these!

RH-92174 Inset: On reflected SubD, ends with selecting the wrong faces
RH-92175 Inset: No Preview on Refected SubD
Ending the command with a different value and with Enter works in the WIP.

RH-79147 Bridge fails with symmetry
RH-79772 Bridge to symmetrical SubD: Symmetry is removed
and others…

This one seems fixed in the WIP at least.

RH-92176 SubD Double Reflect: Deleting edge loop keeps vertex

8

Really hope SubD gets some love & these items looked at. Been trying to use Subd for more parts and it feels like I’m regularly running into “well this doesn’t work as expected, what’s the workaround…”. Great tool, just needs some hugs.