Hey guys, I would like to extrude these surfaces to the inside. I tried to do this with the normal vectors at the middle of each of the surfaces, but the result is not exactly what I want. The normal vectors have different directions, so the extrude sometimes gets to the inside, sometimes to the out…

Hey ! I’ve noticed that when the vectors are not going in the same direction, they are at least in same branches. which is easier to fix ! Is it something like this? flip normal vectors_ama.gh (488.9 KB) [flipsomevectors]

Hahaha ! I didn’t though of checking that hidden internalized data ! Nice one :slight_smile:

Flip normal vectors of surface

Grasshopper

isabelle.grahlke (Izzi) January 30, 2020, 10:27am 5

Thanks a lot!!

Topic		Replies	Views
Flip certain surfaces Grasshopper windows , surface	4	508	November 7, 2023
Unable to change the direction of the extrusions in GH Grasshopper windows , extrude , rhino8	1	85	November 22, 2025
How are normal vectors decided? Grasshopper windows	8	476	March 15, 2024
How can I flip all the normals toward one direction on grasshopper? Grasshopper windows	4	1905	June 2, 2023
Flip Surface Normals Towards a Point Grasshopper windows , mac	12	2622	February 26, 2026

Flip normal vectors of surface

Related topics