duplicated triangles after applying removeDuplicatePolyFilter

Hyunwoo_Kim · July 10, 2021, 4:17am

Hi, I’m creating a polydata after triangulation.
I want to remove all duplicated triangles.
After using remove DuplicatePolyFilter I still got the message that the polydata has duplicated triangles.
How can I perfectly remove duplicated triangles?

Kenichiro-Yoshimi · July 10, 2021, 8:21am

Hello,

Could you share the data including the duplicate triangles you are using in a vtp file or something?

Hyunwoo_Kim · July 11, 2021, 12:15am

test.vtp (3.5 MB)
This is a my mesh file!

Kenichiro-Yoshimi · July 11, 2021, 2:42am

Hello,

For the data you shared, before and after applying vtkRemoveDuplicatePolys, the results are as follows

Number of points: 183430 → 183430
Number of cells: 366104 → 365836

I also tried a similar tool, MeshLab’s Remove Duplicate Faces filter, and the results were the same.

Vertices: 183430 → 183430
Faces: 366104 → 365836

From the above, it seems that removing duplicate triangles in the normal sense is valid.

How did you check for duplicate triangles in your previous post? Also, when you did that check, was the number of nodes in your data the same as above?

Hyunwoo_Kim · July 12, 2021, 2:47pm

Hello,

I checked the data used the Tetgen binary file!
I think my poly data file has some intersection problems.
So, If any progress, I’ll repot you, Sir.

Thanks!

Jacky_Joy · March 8, 2022, 11:40am

thanks my issue has been fixed.