PDF Output creates jagged lines from smooth curves

[DJS]

In modelspace and paperspace I have smooth curves.

Once I output to PDF some (but not all) of the smooth curves have become segmented lines:

I’ve both saved as PDF, and printed using PDF as the output ‘printer’. Detail window is set to wireframe. Running R8.

Any thoughts on what I can do about this?

[DJS]

Zoomed for clarity:

[petermasek]

try the “convert” function and break the curves into simple arcs.

[ftzuk]

Can you isolate a single element and upload a rhino file?

[DJS]

This worked, thank you. Do you know why this extra step is necessary?

Here’s what they look like with control points on:

Here’s the result when output to a PDF:

[DJS]

Sure here you go:

Column_PDF_Test.3dm (1.3 MB)

[DJS]

@stevebaer I see that people have been asking about similar issues since V5 / 2014 - one solution I found was to crank the ‘Rhino PDF’ print resolution up from the standard 300dpi to 1000dpi, however this results in ballooning file sizes if there are raster elements in the document (in my workflow we use a lot of reference photos) - is there a more elegant solution at the moment or is this just ‘how it is’ for now?

[ftzuk]

Rhino 8

File > Print > Rhino PDF. Seems fine here.

[DJS]

Interesting, thank you for taking the time to test that. I’ve run a few more tests and the issue presents itself inconsistently, for example opening the file in Mac recreates the issue, but opening the file in PC and running the same process does not:

I’ll keep playing and see if I can figure out the disconnect.