OffsetSrf - Simple Shape, Bad Result V9 WIP

[davidcockey]

The grey polysurface on the right was offset 5 units, and the result is on the left. Not as expected.
(9.0.25343.14055, 2025-12-09)
OffsetSrf Bad.3dm (2.0 MB)

I can fix it, but should not need to.

Command: OffsetSrf
Select surfaces or polysurfaces to offset
Select surfaces or polysurfaces to offset. Press Enter when done
Select object to flip direction. Press Enter when done ( Distance=5 Corner=Sharp ThroughPoint Solid=No Tolerance=0.001 BothSides=No FlipAll )
Surface offsetting in progress… Press Esc to cancel
Creating meshes… Press Esc to cancel

[jessesn (Jessesn Chen)]

@davidcockey

The grey polysurface on the right was offset 5 units, and the result is on the left. Not as expected.

I’d like to know if this green object on the right is the result you wanted? Thank you.

[davidcockey]

@jessesn

I’d like to know if this green object on the right is the result you wanted? Thank you.

This is what I expect:

I do not expect an open polysurface.

[jessesn (Jessesn Chen)]

@davidcockey

I do not expect an open polysurface.

Got it and I have logged this issue with our development engineers.
RH-91048 OffsetSrf: There are naked edges after offset