I’m still encountering a lot of issues exporting (vector) pdfs from a layout using technical view. This has been an issue for a while now (see here or here). Sometimes curves “show through,” but more commonly for me, curves are missing.
In a highly complex design, it’s not feasible to go in and first find, then re-draw (by hand), every missing curve in something like Illustrator post-export.
Here’s one example, but I run into it all the time:
We can’t troubleshoot issues like this from images. Since you are running into this all the time, hopefully one of those cases occurs in a file that can be uploaded to us?
-wim
In this example (not true of the initial post, those missing lines aren’t intersections), what’s not showing seem to be intersection lines, especially where a curved surface meets a flat one. The display mode settings have intersection lines set to object’s color, width of 1:
There’s also another thing happening here, which is a bunch of lines (almost looks like mesh polygons) showing up along the lofted surface, some persistent, some only showing up when the camera is at a steep enough angle:
Thanks for that file.
When I open that here, all details are in the Wireframe display mode, indicating that you are using a custom display mode that is not on my system.
When I use the default Technical display mode with hidden lines turned off, I’m getting those intersections here:
I’ve put this on the list as RH-97940 Display: Technical: Extra Lines on Srf
In my tests, when turning of creases in the technical display mode, the persistent ones went away.
Your file also shows a regression in Rhino 9 where seams of extrusion objects are drawn in the Technical display mode. This issue is now filed as RH-97939 Display: Extrusion Seams Show in Technical
-wim
As for the extra lines that are getting drawn, this is not something that a display mode can fix. You’ll need to rebuild the surfaces for those to go away.
-wim
