topic Re: 3D Navigation does not allow view to be rotated upsidedown in AutoCAD Forum

3D Navigation does not allow view to be rotated upsidedown

ShetEE — Fri, 06 Oct 2023 15:29:16 GMT

In my 3D drawing, I am working on the back side. When I rotate the view cube upside down, I see that the back side of the view cube is upside down. Now, when I use shift+MMB to change my view, the view cube immediately flips over to right-side-up. I'm am not able to view an item at my desired angle because the 3D environment restricts my movement in this way. Can I disable this feature and allow the view to be rotated without restriction in any direction?

Re: 3D Navigation does not allow view to be rotated upsidedown

Valentin_CAD — Fri, 06 Oct 2023 16:05:41 GMT

@ShetEE ,

Please provide the drawing or some visual for all troubleshoot.

Try setting the UCS and PLAN to World.

How to reset the User Coordinate System (UCS) to the Orthogonal World Coordinate System (WCS) in AutoCAD

Also, check your option match this link:

To Work With ViewCube Display Options

Re: 3D Navigation does not allow view to be rotated upsidedown

ShetEE — Fri, 06 Oct 2023 15:48:19 GMT

As described, I've changed my UCS to world, and the same issue exists.

Re: 3D Navigation does not allow view to be rotated upsidedown

pendean — Fri, 06 Oct 2023 16:42:20 GMT

Share your DWG file so we can follow along with your post please.

Re: 3D Navigation does not allow view to be rotated upsidedown

leeminardi — Fri, 06 Oct 2023 17:28:23 GMT

The miiddle mouse button references the 3dorbit command which is constrained for certain 3D rotations. The 3dforbit is not constrained. After invoking the cui command, try redefining the middle mouse button from:

To:

With this change you can use Shift-MMB to place AutoCAD into 3d Free Orbit mode and you can use the left mouse button to control 3d orbital rotations without constraints.

Re: 3D Navigation does not allow view to be rotated upsidedown

ShetEE — Fri, 06 Oct 2023 19:03:14 GMT

Thank you. This does what I want to some degree. I won't be leaving it on the shift+MMB command, as I won't use it nearly as often as I'd use the default 3DOrbitTransparent command.

If there is a way to remove constraints on the 3DOrbitTransparent command, I'd still like to hear them.

Attached is my drawing and an screen grab of what I'm hoping to accomplish. Notice that the view cube is upside down.

Re: 3D Navigation does not allow view to be rotated upsidedown

leeminardi — Fri, 06 Oct 2023 19:22:27 GMT

As you have discovered, bit the 3dorbit and 3DOrbitTransparent commands limit rotation about the horiztontal axis to 180°. If you only have an occasional need for fully uncontrained 3D view rotation assign the 3dforbit command to Ctrl Shift MMB or to a menu item.

Re: 3D Navigation does not allow view to be rotated upsidedown

ShetEE — Fri, 06 Oct 2023 19:42:31 GMT

So there is no method to remove this rotational limit?

And that is a good idea to tie it to Ctrl+Shift+MMB. Otherwise, I'll likely forget the command by Monday morning.

Re: 3D Navigation does not allow view to be rotated upsidedown

ChicagoLooper — Fri, 06 Oct 2023 19:51:02 GMT

Hi @ShetEE

Here's a way to rotate your model upside down.

1. Use 3DFORBIT command. If you prefer the Ribbon, click the ICON from the dropdown.

Image-1

2.You'll get a green orbit circle. To get going, make sure your model is in the middle of your screen and don't zoom-in too close.

Image-2

3. Put your cursor in the middle of the circle then click-and-drag, slowly, keeping the cursor close to the center of the circle. You can switch from zooming to panning. Careful, if your cursor is outside of the circle when you drag, your model might fly off-screen and you don't want that. You can easily rotate your model so it's upside down.

Image-3

4. When you want to use drawing or modeling commands, exit 3DFORBIT by right-clicking=>Exit. When you exit, your 'current' viewing angle will be maintained.

Image-4

5. To return to regular Home Base view hit the top panel of the view cube OR change the view in upper left corner to 'Top.'

Image-5

After practicing, you can pick your own pivot point and zoom/pan really fast.

Re: 3D Navigation does not allow view to be rotated upsidedown

leeminardi — Fri, 06 Oct 2023 21:13:08 GMT

@ChicagoLooper See message #6. The OP is aware of 3DForbit but is not satisfied with that and now appears to want the behavior of 3dorbit to be modified!

Re: 3D Navigation does not allow view to be rotated upsidedown

ShetEE — Fri, 06 Oct 2023 21:23:22 GMT

I'm not trying to be difficult. I'm really just asking if this is possible. I now assume, based on this reply, that this is an absurd request. Is that fair to say?

Re: 3D Navigation does not allow view to be rotated upsidedown

leeminardi — Sat, 07 Oct 2023 14:27:17 GMT

@ShetEE It's not clear if 3dForbit does what you want then why not use it rather than 3dorbit.

Re: 3D Navigation does not allow view to be rotated upsidedown

ShetEE — Mon, 09 Oct 2023 13:42:15 GMT

3DFORBIT does allow for the upside down view, but it doesn't work as seamlessly as 3DORBIT. By this I mean, it's a separate tool that isn't the simple click and drag like 3DORBIT. If it is possible to tweak 3DORBIT to allow this move, then I won't need to utilize a second, less ideal tool to do this when desired. If it's not possible to tweak 3DORBIT in this manner, then I will gladly use 3DFORBIT.