topic Re: Lines appearing a continuous line in Inventor Forum

Lines appearing a continuous line

lkirit2000 — Thu, 15 Aug 2024 00:48:43 GMT

3D CAD file edges appear as broken lines in some assemblies. Why is that?

Please see the attached image.

Thanks

Kiri

Re: Lines appearing a continuous line

Gabriel_Watson — Thu, 15 Aug 2024 04:57:44 GMT

1) Try View tab > Refine Appearance first:

2) Try changing Tools > App. Options > Display > Display quality: Smooth, and uncheck (OFF) "Disable Automatic Refinement".

3) Then try App. Options > Hardware > Quality. If those don't make this better, I think it is just due to limitations in rendering capabilities, and you should try Inventor's Studio environment for proper rendering without performance shortcuts.

Re: Lines appearing a continuous line

lkirit2000 — Thu, 15 Aug 2024 06:24:24 GMT

Hi GAbriel,

Thanks for your p[romt response.

I tried both ways it does not work.

But how it is appears fine in the other file.

Thanks

Kiri

Re: Lines appearing a continuous line

willie_roelofsNJHEF — Thu, 15 Aug 2024 10:16:45 GMT

First, it's important to make the following distinction between the two images:

The first image is rotated at a custom angle.
The second image is rotated at an isometric angle.

This distinction is crucial because it affects how Inventor renders the edges:

In the first case, the edges are roughly approximated, similar to drawing an angled straight line in MS Paint. It’s quick and doesn’t require much GPU/CPU power, but the result isn’t very precise.
In the second image, the edges form a straight line down. Using the MS Paint analogy again, drawing a vertical straight line is much simpler and cleaner.

Although the edges may appear broken in the first image, they are not.

Possible Solutions:

To be honest, this isn't a real problem, but if you want perfectly parallel lines when rotating your object, it’s achievable:

The higher the resolution, the less noticeable the issue becomes. For instance, a 4K resolution might mitigate it significantly.
You can also experiment with the Visual Style settings until the edges meet your preferences. I recommend trying the Realistic Style.
As Gabriel suggested, go to Tools > Application Options > Hardware and increase the Graphic Settings to Quality.
As Gabriel suggested, go to Tools > Application Options > Display, set Display quality to Smooth.

Hope that helps!

Re: Lines appearing a continuous line

johnsonshiue — Fri, 16 Aug 2024 15:06:34 GMT

Hi Kiri,

I believe this has something to do with the graphics engine reducing fidelity for performance purpose. The behavior can be unpredictable. It may appear random. It can be mitigated by adding more graphics RAM (to 8GB).

Another workflow to try is to refresh the graphics manually. Go to Tools -> App Options -> Display -> check "Disable auto refinement." When you want to refresh the graphics, go to View -> Refine Appearance. Or Rebuild All will help too.

Many thanks!

Re: Lines appearing a continuous line

lkirit2000 — Sun, 18 Aug 2024 23:23:39 GMT

Hi Johnson

Thanks for your reply. My pc have 32 GB RAM. Now it is okay. When I try last it didn't appear. Whay the inventor take a long time. I had same problem with frame generator also, it took days to update.

I am using the machine for 7 years.

Where is the issue ? and how to fix?

Please advice.

Thanks

Kiri

Re: Lines appearing a continuous line

lkirit2000 — Sun, 18 Aug 2024 23:35:31 GMT

Hi Johnson

I am using the machine for 7 years.

Where is the issue ? and how to fix?

Please advice.

Thanks

Kiri

Re: Lines appearing a continuous line

SBix26 — Mon, 19 Aug 2024 01:06:56 GMT

I suspect you have 32GB of system RAM. Johnson specified adding graphics RAM, which basically means getting a better video card (one with more memory). A new card with more memory will likely be faster as well, which is all good.

Sam B

Inventor Pro 2025.1 | Windows 11 Home 23H2

Re: Lines appearing a continuous line

lkirit2000 — Mon, 19 Aug 2024 01:26:18 GMT

I have NVDIA QUADRO M4000 graphics card.

Thanks

Kiri

Re: Lines appearing a continuous line

SBix26 — Mon, 19 Aug 2024 01:51:58 GMT

The M4000 cards seem to mostly have 8GB of graphics RAM, so you should be good. If you have the money, you could upgrade to something with more memory-- some Quadro M6000s have 24GB, some even available for under $1000 (US). Or go big-- 48GB for ~$7000?

Sam B

Inventor Pro 2025.1 | Windows 11 Home 23H2