Extend surface by negative value not working on simple surface R7(SR13)

Simple planar 1 degree square surface. When I run the ExtendSrf command and type in “-10” + Enter (after selecting an edge) nothing happens. I can click and drag the edge in a negative direction but cannot enter an exact value via the command line. R6 (SR35) works as I expect it to.

Screen capture links and 3dm file below:

R7 ExtendSrf - Capture

R6 ExtendSrf - Capture

2022-01-11 ExtendSrf Negative.3dm (2.6 MB)

Hi Paul - I see that. thanks.
RH-66949 ExtendSrf: negative values fail


RH-66949 is fixed in the latest WIP

Does not appear fixed to me when tested with this simple surface:
ExtendSrfTest.3dm (1.6 MB)

I see the same behavior as originally reported:

Rhino 7 SR19 2022-5-17 (Rhino 7, 7.19.22137.07001, Git hash:master @ 3ae9a3803ff1583b53c0ef27b6860e06ef2d363a)
License type: Commercial, build 2022-05-17
License details: Cloud Zoo

Windows 10 (10.0.19044 SR0.0) or greater (Physical RAM: 64Gb)

Computer platform: DESKTOP

Standard graphics configuration.
Primary display and OpenGL: NVIDIA GeForce RTX 2080 Ti (NVidia) Memory: 11GB, Driver date: 4-20-2022 (M-D-Y). OpenGL Ver: 4.6.0 NVIDIA 512.59
> Accelerated graphics device with 4 adapter port(s)
- Windows Main Display attached to adapter port #0

OpenGL Settings
Safe mode: Off
Use accelerated hardware modes: On
Redraw scene when viewports are exposed: On
Graphics level being used: OpenGL 4.6 (primary GPU’s maximum)

Anti-alias mode: 4x
Mip Map Filtering: Linear
Anisotropic Filtering Mode: High

Vendor Name: NVIDIA Corporation
Render version: 4.6
Shading Language: 4.60 NVIDIA
Driver Date: 4-20-2022
Driver Version:
Maximum Texture size: 32768 x 32768
Z-Buffer depth: 24 bits
Maximum Viewport size: 32768 x 32768
Total Video Memory: 11 GB

Rhino plugins that do not ship with Rhino
C:\Program Files\Orca3D V2\Orca3D.rhp “Orca3D”

Rhino plugins that ship with Rhino
C:\Program Files\Rhino 7\Plug-ins\Commands.rhp “Commands” 7.19.22137.7001
C:\Program Files\Rhino 7\Plug-ins\rdk.rhp “Renderer Development Kit”
C:\Program Files\Rhino 7\Plug-ins\IdleProcessor.rhp “IdleProcessor”
C:\Program Files\Rhino 7\Plug-ins\RhinoRenderCycles.rhp “Rhino Render” 7.19.22137.7001
C:\Program Files\Rhino 7\Plug-ins\rdk_etoui.rhp “RDK_EtoUI” 7.19.22137.7001
C:\Program Files\Rhino 7\Plug-ins\rdk_ui.rhp “Renderer Development Kit UI”
C:\Program Files\Rhino 7\Plug-ins\NamedSnapshots.rhp “Snapshots”
C:\Program Files\Rhino 7\Plug-ins\RhinoCycles.rhp “RhinoCycles” 7.19.22137.7001
C:\Program Files\Rhino 7\Plug-ins\Toolbars\Toolbars.rhp “Toolbars” 7.19.22137.7001
C:\Program Files\Rhino 7\Plug-ins\3dxrhino.rhp “3Dconnexion 3D Mouse”
C:\Program Files\Rhino 7\Plug-ins\Displacement.rhp “Displacement”
C:\Users\dcock\AppData\Roaming\McNeel\Rhinoceros\packages\7.0\PanelingTools\2021.3.2.446\PanelingTools.rhp “PanelingTools”
C:\Users\dcock\AppData\Roaming\McNeel\Rhinoceros\packages\7.0\SectionTools\2021.4.21.831\SectionTools.rhp “SectionTools”

This fix is in Rhino 8 WIP right now; not Rhino 7.

@brian We could really use the fix in Rhino 7. Is that possible?

We don’t make fixes that could make things worse in the current stable version. But only @rajaa can tell us how big a change this was and whether it feels safe to put in Rhino 7. Also, Rhino 8 WIP is available to you now, so you can take advantage of this (and may other) improvements. See Welcome to Serengeti for details.

This might be a safe change to make the change in 7.
@carlRTC Please test at the WIP to make sure it did not break anything and that it is working as expected, and then we can look into populating to 7.

@rajaa, I just downloaded the WIP and ran the ExtendSrf command with a negative value, and it appears to work perfectly!

Great, please make sure we didn’t break anything else. Thanks