Can't select point on CV Curve in Maya 2018!

[Anonymous]

If I create a CV curve and try right clicking in the Viewport and select "Curve Point" from the Hotbox I can't then  select a point on a curve.

Another Maya 2018 bug? Is anyone else having this issue?

[sean.heasley]

Hi @Anonymous

If you select Control Vertex you should be able to edit the curve points.

Please hit the Accept as Solution button if my post fully solves your issue, or reply with additional details if the problem persists.

Kudos are greatly appreciated. Everyone likes a thumbs up!

[Anonymous]

Hi. Sorry but that would only allow me to select a CV vertex not a Curve Point.

A CV vertex is a point along the Hull of the curve. A Curve Point is a point along the curve that can be used for splitting etc.

The bug definitely seems linked to the hotbox, as if you go the long winded method of going to the "Select" menu and select "Components" and then "Curve Point" then it seems to work.

[djonesuk]

Hi

The select curve point function works just fine for me in Maya 2018 Windows 10. When you say it doesn't work, what happens when you click on the Curve Point option in the hotbox?

[Anonymous]

Literally nothing happens when I select the Curve Point Hotbox entry.

It does work in the legacy viewports though, just not in Viewport 2.0

[djonesuk]

Legacy viewports?  In 2018?  Are you sure?

[Anonymous]

Yep. You can enable them with an environment variable.

set MAYA_ENABLE_LEGACY_VIEWPORT=1

 I've just deleted my prefences and tried again though and guess what! It's working again.

[djonesuk]

Hmm, thanks for the legacy info.  I wasn't aware of that.

Seems deleting prefs is the 'turn it off and on again' of Maya.  

[Anonymous · Accepted solution]

Ok I've looked further into this and the reason deleting the preferences worked, was because it reset the "vp2RenderingEngine" optionVar to OpenGL.

We need to use DirectX11 at our studio and when this option was is set:

e.g.

import maya.cmds as mc; mc.optionVar( stringValue =("vp2RenderingEngine", "DirectX11"))

The problem with CV selection is then evident. You need to run Maya twice for the issue, as the option var only takes effect the next time you run Maya, but this is still a major issue.

Can an Autodesk engineer look into this?

[sean.heasley · Accepted solution]

Hi @Anonymous

Thank you for the detailed workaround and I've logged this issue with our dev team!

[Anonymous]

FYI This is still broken in Maya 2018 Update 1

[mspeer]

Hi!

Here it works with Maya 2017 and Maya 2018 also in Viewport 2.0

[Anonymous]

Are you in Direct X Viewport 2, or OpenGL?

[mspeer]

Hi!

OpenGL.

[Anonymous]

I think that's why it's working for you then. We have to use DirectX for our ShaderFX shaders and still have the problem.

[mspeer · Accepted solution]

Hi!

I tested it with DirectX mode and you are right.

But there seems to be a workaround, after you you changed to Curve Point selection:

1. CTRL + Right mouse click directly on the curve to open Hotbox, but don't select any menu

2. Just release buttons

Now it works (for me)

[Anonymous]

Thanks for solution.
This is big issue also for me, vote +1 for bug fix.

[Anonymous]

FYI. This is still broken in Maya 2018 Update 2. 😞

[Anonymous]

I confirm the problem exists.

[Anonymous]

Mine were being hidden but were there. I had to go into my show menu and turn my Nurbs CVs back on.