NVil Forum

General Category => Community Help => Topic started by: Mike_Hocksworth on January 30, 2025, 12:21:21 am

Title: Is it possible to create a flat mesh from a closed spline?
Post by: Mike_Hocksworth on January 30, 2025, 12:21:21 am
I have in mind using the Background Reference Image function in orthographic view and tracing around an image with Spline (object) tool.

Then running a tool to create a flat Mesh object segmented into quads ideally.

I could then use other commands such as Shell (Mesh) to thicken the object.


Thanks for your consideration.  :)
Title: Re: Is it possible to create a flat mesh from a closed spline?
Post by: IStonia on January 30, 2025, 01:37:35 am
Can you send me a sample image so I can make a video for that? Send to, info@digitalfossils.com
Title: Re: Is it possible to create a flat mesh from a closed spline?
Post by: Mike_Hocksworth on January 30, 2025, 03:23:21 am
Sent through email just now.
I have found something close just messing around with 'Spline Polygon' Streamline tool, though it creates an NGON.

Really keen to see if there is a better way, many thanks.
Title: Re: Is it possible to create a flat mesh from a closed spline?
Post by: IStonia on January 30, 2025, 04:56:56 am
Hope this helps
https://youtu.be/GQ9ff-bS3p8
Title: Re: Is it possible to create a flat mesh from a closed spline?
Post by: Mike_Hocksworth on January 30, 2025, 05:56:27 am
Thanks for that.
I haven’t gotten into the draw mesh tools yet, for some reason I thought they were for Retopo work so I ignored them for now.

This approach does seem to produce better geometry than what I was coming up with.
Title: Re: Is it possible to create a flat mesh from a closed spline?
Post by: steve on January 30, 2025, 08:50:43 am
Quote from: Mike_Hocksworth on January 30, 2025, 03:23:21 am
I have found something close just messing around with 'Spline Polygon' Streamline tool, though it creates an NGON.
You should of looked at "Spline Surface"
Title: Re: Is it possible to create a flat mesh from a closed spline?
Post by: Mike_Hocksworth on January 30, 2025, 10:11:48 pm

[/quote]
You should of looked at "Spline Surface"
[/quote]

I might need a bit of run down on how that one works, I tried to use it (very likely incorrectly) and I got a Null Reference exception error pop-up.

Here is what I did:
Title: Re: Is it possible to create a flat mesh from a closed spline?
Post by: steve on January 30, 2025, 10:28:24 pm
Quote from: Mike_Hocksworth on January 30, 2025, 10:11:48 pm

I might need a bit of run down on how that one works, I tried to use it (very likely incorrectly) and I got a Null Reference exception error pop-up.

Here is what I did:
  • Created an outline (closed) with a Spline
  • Duplicated and moved the spline up
  • Selected both splines
  • Ran the command: Streamline Basic Tools -> Generic Tools -> Spline_Surface
  • LMB click in viewport

That is a bug. I will report it.

It still works if using 4 open splines.
Title: Re: Is it possible to create a flat mesh from a closed spline?
Post by: Mike_Hocksworth on January 30, 2025, 11:11:59 pm
Quote from: IStonia on January 30, 2025, 04:56:56 am
Hope this helps
https://youtu.be/GQ9ff-bS3p8

I gave this a go myself. Image attached.

I really need to spend more time on these DrawMesh tools.
Title: Re: Is it possible to create a flat mesh from a closed spline?
Post by: IStonia on January 31, 2025, 12:17:11 am
Quote from: steve on January 30, 2025, 10:28:24 pm
Quote from: Mike_Hocksworth on January 30, 2025, 10:11:48 pm

I might need a bit of run down on how that one works, I tried to use it (very likely incorrectly) and I got a Null Reference exception error pop-up.

Here is what I did:
  • Created an outline (closed) with a Spline
  • Duplicated and moved the spline up
  • Selected both splines
  • Ran the command: Streamline Basic Tools -> Generic Tools -> Spline_Surface
  • LMB click in viewport

That is a bug. I will report it.

It still works if using 4 open splines.


The found bug will be fixed in next version.

The "Spline Bridge" In "Draw Mesh" tool can be used in this case. It can handle two or more splines, open or closed.