Cleaning a set of curves

Rhino Developer
1

Good afternoon,
I’ve got a big set of curves that are fully or partially overlapping.
Is there an easy way to find/remove duplicates by keeping only the curves as seen? The display order is good and I’d like to keep only the curves that are on top.

Thanks for your help

2

I’m not sure what this means. Do you have a sample file that illustrates what you have and what you want?

– Dale

3

Hi Dale,
The example attached is the result of a HiddenLineDrawing.Compute() with clipping planes.
I’d like to remove every overlapped curves and keep only the curves that are visible in rhino (the green ones in this particular example + the left section of a black curve that is not overlapped).

To make it short, I’d like to keep only the objects that I can see from my top view, ideally from rhinocommon (at worse even if you have a rhino command for that it still would help a lot).

Example_McNeel.3dm (28.6 KB)

Thanks for helping

4

Hi @Matthieu_from_NAVINN,

Intersection.CurveCurve will detect overlaps. Then you just need to decide which curve to throw away.

– Dale

5

Hi @dale, I thought of doing this, but I’ll have thousands of curves, and testing such a number by itself will be really heavy and time consuming.
It would be great to have something to natively clean this kind of set. For most CAD design companies I know, duplicated or overlapped curves are big “no” in the design quality specifications.
Thank you anyway for you help

6

Hi @Matthieu_from_NAVINN,

A function that helps with this is on the to-do list.

https://mcneel.myjetbrains.com/youtrack/issue/RH-47496

– Dale

7

Nice, I’m looking forward to see this in RH7.
By the way, if you add this kind of feature, I could be nice to also embed it as a HiddenLineDrawing.Compute() option