How to flip reverse face orientations per connected piece

[noc2]

Hi;

I have an asset that I imported into Houdini that has pieces with reverse Vertex Normals inside a for each loop per connected piece node, I have written a vex code that finds their bbox center of a piece and tries to determine which pieces get flipped according to the dot product of the point positions and the the bbox center point and have gotten no result out of it

And this is what I could come up with for islands with volume. I have absolutely no idea as to how to handle flat plane like structures. Maybe compare their vertex normal orientations to the centroid of the entire enclosure? But then again my code doesn't do the job

Any help would be appreciated.

AJ

flip_reverse_prims.hiplc

Edited 17 hours ago by noc2

[fencer]

How about compare only once prim to vertex normal for each piece.

flip_reverse_prims_v02.hipnc

[noc2]

Thank you so much Paul <3

[Sepu]

You can also use the measure sop in volume mode and measure by piece and then in the reverse sop you can just say @volume<0 so if there any negative values you reverse them