I fear some of the gremlins you were able to fix here Rhino 8 HiddenLineDrawing - Issue with OccludingSectionOption - #13 by GregArden might have come back recently. I came across a few issues with 2D-Drawings I created with a custom HLD-Script where some Curves that shold be Hidden behind a filled Section Fill remained visible.
I was able to setup a Grasshopper test file where these issues seem to be repeatable: 240907_SimpleHiddenLineTest.gh (22.4 KB)
(Rhino Template is “Small Objects - Meters”)
A simple Center Box, placed at a certain Point and sectioned by the (flipped) XZ Plane.
If I set the center point of the box to e.g. Y = 2.90, all hidden curves are occluded as expected:
Hey @GregArden and/or @rajaa,
can you repeat these issues on your side? Is it maybe even something you’re already aware of?
Would be very happy if you could give a short insight on your thoughts about this…
Thank you!
@romio82 what service release are you using?
I tested with V8 SR11, and I am not observing the issue. Please test with the latest SR and let us know how that looks.
Hey @rajaa, thank you for looking into this!
As my update frequecy is set to Service Release Candidates, I just downloaded the latest RC for SR12 (8.12.24254.14001, 2024-09-10) and I’m still seeing the described issues.
Can you repeat the issues with that version?
Hello @rajaa,
thank you for checking the new SR!
I fear my (accidential) use of the non-native flip plane component caused a bit of disturbance here… In my opinion your solution with flipping the plane via GH flip unfortunately doesn’t work in this context - as far as I can see the plane remains un-flipped. So you aren’t looking towards the clipped part of the cube but on the closed one.
I adapted my Grasshopper a little bit and rotated the view instead of flipping the plane:
That way I can reproduce the issue without using a flipped plane. Do you see that behaviour on your side as well? Sorry for coming up with a non-native solution in the first place!
Hey @GregArden and @rajaa,
sorry for being tenacious here but do you maybe have a rough timeframe on when we can expect news on this HiddenLine-Issue?
Our internal workflow to create 2D-drawings is partly based on this feature and at the moment it’s quite tedious handwork to get rid of unwanted curves within sectioned areas.
It would be great to get a rough estimation on when this could be tackled.
Thank you!
when reading through the latest ServiceRelease Fixes I realized a lot of work was put into the area of this thread’s topic. I just tried my simple HiddenLine Grasshopper Test again with the first SRC 17 and all Issues I talked about seem to be fixed now.
Great work, thanks a lot!!
The YT you created could be closed from my point of view.
Strange. I’m on the latest SR17 (8.17.25049.13001, 2025-02-18) and I can’t reproduce any of the issues. A setting of 4.1 on the slider produces the following result on my setup wich looks great:
