[Gmsh] outward normal of surface triangles

[Ashish Garg]

Hi Ashish

give the condition that the cross product should be greater than zero. I
guess it will resolve the problem.

Ashish Garg

On Wed, May 2, 2012 at 12:38 PM, Negi, Ashish <ashish.negi at honeywell.com>wrote:

>  Hello Everyone,****
>
> ** **
>
> I’ve been using GMSH library to open Nastran BDF file and extract mesh
> data for my software. I generally load a mesh consisting of only
> Tetrahedra. Hence, surface of model have only Triangle elements. ****
>
> ** **
>
> I want to find outward normal at each Triangle. I get coordinates of each
> Triangle and then take cross product to get normal to the element. But, I’m
> not sure if it will always be outward. Can someone suggest a solution to
> this problem?****
>
> ** **
>
> Thanks,****
>
> Ashish****
>
> ** **
>
> ** **
>
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