Clipping Sections Bug offsetting background, and layer issues

[James36 (James)]

Hi there,

I’m having two issues with clipping drawings, firstly the background is misaligned from the cut, making the drawing unusable. Secondly, all lines exported are on the same layer called Curves. Is it possible to have them as separate layers as you can do with Make 2D?

Finally, I am just wondering if there is a way to clip a section view. I am taking a section through a house in a wider landscape, and when I select the terrain to appear in the section it shows the entire landscape and so extends 1km either side, which isn’t needed. Is it possible to limit the width of the section?

Thanks for your help

[wim (Wim Dekeyser)]

Hi James -

@James36

firstly the background is misaligned from the cut, making the drawing unusable.

It’s impossible to know what’s going on here from an image. Please post a 3dm file that can be used for troubleshooting.

@James36

Secondly, all lines exported are on the same layer called Curves. Is it possible to have them as separate layers as you can do with Make 2D?

I found this earlier answer to that question:

Rhino 8 Feature: Section Styles

I see. On the flip side this will make the list of sections layers very big and harder to manage. I think it worth continuing to consider a good solution to solve the issue you are presenting. Maybe allow scaling factor for printing? Please try the fix in the next service release, and see if it helps. Thanks again for your feedback.

It looks like, for the time being, your options are to either make a static copy of all curves and put these on separate layers, or use different clipping planes that clip geometry selectively (include or exclude layers). You’ll then get Curves layers with dynamic content for the different layers or objects.

@James36

Is it possible to limit the width of the section?

That’s not currently possible and would require something like jogged clipping lines (RH-69117). For the time being, you’ll need to create a copy of the larger landscape and trim that the smaller extents around the house.
-wim

[luca4 (Luca)]

Hi @wim and @rajaa
I noticed this bug too:
Background curves are offset
This is quite a blocker: Clipping Drawings are unusable when background is needed.

Tested both:
Version 8 SR13
(8.13.24282.10001, 2024-10-08)
&
Work In Progress
(9.0.24282.12305, 2024-10-08)

please find an example file + video and screenshot at this link
try to repeat on your side:

1. Open Blank design
2. Place a sphere at origin
3. place a Clipping section in X direction @ origin
4. place a clipping drawing
5. edit clipping drawings and change AddBackground from No to Yes
6. background curves are created BUT with some offset

Also, curves are not precise, some contour are missing.
On the same folder there is also another test file Clipping sections - background offset.3dm where you can see solid/surfaces are not dealed correctly when creating drawings.

I found another post about this:

Rhino 8 - Clipping drawing misplaced background

Hi all, I am facing issues related to the clipping drawings: for some clipping plane, the Background layers are slightly moved from the cut layers (Curve, Hatch, Solid). I can’t figure out what triggers this issue as for some clipping planes/drawings it worked all fine. [image] The model is a 16m*16m building relatively well detailed (file size: 400mb) from which I try to export dynamic plans and sections. Anyone experienced that? Thanks for the help. System: Rhino 8 SR3 2024-1-9 (Rhino…

[wim (Wim Dekeyser)]

Hi Luca -

@luca4

try to repeat on your side:

1. Open Blank design
2. Place a sphere at origin
3. place a Clipping section in X direction @ origin
4. place a clipping drawing
5. edit clipping drawings and change AddBackground from No to Yes
6. background curves are created BUT with some offset

Thanks for those steps.
→ RH-84226 EditClippingDrawings: Offsets Background
-wim

[luca4 (Luca)]

Hi @wim and @rajaa,

Could you please give higher priority to this?
Clipping Section cannot be used to generate drawings
when background is needed.

Thanks!

[brian (Brian Gillespie)]

RH-84226 is fixed in Rhino WIP