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[GiDlist] mirror_NURBS_SURFACES

Posted: Wed Jun 22, 2005 10:47 am
by Thanasis Makrodimopoulos
Hi,

When I mirror a NURBS surface and I generate the mesh
the connectivity is given clockwise (not anti-clockwise).
Do you have any suggestion?
(one solution is to mirror the lines only and define the
surface however sometimes this can be time - consuming)

Regards
Thanasis
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[GiDlist] mirror_NURBS_SURFACES

Posted: Wed Jun 22, 2005 11:23 am
by escolano
Hi,

You must swap the surface normal: the elements will have the same orientation as the source surface

GiD has some tools about normals: Utilities-DrawNormals-Surfaces
Then select the surfaces, and the normal vector will be drawn.
When drawing surfaces, the contextual menu (click right mouse button) has more contextual options:
-All swapped (change all selection)
-Swap some (change only some selected)
-Swap group (made all selection to be coherent between neighbour elements)
-Sel by normal (select by a direction)
-Color (draw surfaces filled by color: back faces in yellow and front faces in its layer color)

Can use Swap some and select the surface/s to change its orientation to the opposite normal.

Regards

Enrique Escolano
----- Original Message -----
From: Thanasis Makrodimopoulos
To: gidlist at gatxan.cimne.upc.es
Sent: Wednesday, June 22, 2005 11:33 AM
Subject: [GiDlist] mirror_NURBS_SURFACES


Hi,

When I mirror a NURBS surface and I generate the mesh
the connectivity is given clockwise (not anti-clockwise).
Do you have any suggestion?
(one solution is to mirror the lines only and define the
surface however sometimes this can be time - consuming)

Regards
Thanasis
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