[GiDlist] NURBS surface division

[My VDI Freemail]

I quite often encounter problems when I want to divide a NURBS surface by EditDivideSurfacesSplit.
Actually GiD rejects this function by giving the message: check point xx. But the line I want to use for the surface division was generated by using points on the boundary and on the surface directly. What is the reason?

Additionally I want to know, what is the best method to join lines, which as individual segments through geometry interfaces. Is there an opportunity to join these segments to get one line only?

Thanks for your support.

Ruediger

[Enrique Escolano]

1) To split the surface, the line points must divide the surface boundary
(it is not sufficient to be over the boundary, must be shared by the
boundary and the split lines)

2) If the lines are "approximately tangents", then you can use a
"Utilities-collapse-Lines" to join it.
It exists another command to force lines tangency (with a user-defined
angle tolerance to select the lines to be tangents).
This command is only available from the right buttons command: Geometry Edit
TangentNurbsL
(the lines must be of type NurbLine, but any line can be converted with the
menu Geometry-Edit-Convert to NURBS-Line)

Convert the lines to NurbLine (in are of another type), force tangency, for
example until 35 degrees, and collapse the lines.

Enrique Escolano

----- Original Message -----
From: "My VDI Freemail" heim.ruediger at vdi.de
To: gidlist at gatxan.cimne.upc.es
Sent: Monday, May 12, 2003 4:44 PM
Subject: [GiDlist] NURBS surface division


I quite often encounter problems when I want to divide a NURBS surface by
EditDivideSurfacesSplit.
Actually GiD rejects this function by giving the message: check point
xx. But the line I want to use for the surface division was generated by
using points on the boundary and on the surface directly. What is the
reason?

Additionally I want to know, what is the best method to join lines, which
as individual segments through geometry interfaces. Is there an opportunity
to join these segments to get one line only?

Thanks for your support.

Ruediger
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GiDlist mailing list
GiDlist at gid.cimne.upc.es
http://gid.cimne.upc.es/mailman/listinfo/gidlist

[Ramon Ribó]

Hello,

The simplest command to use in order to split one line
at the endpoint of another line is:

Geometry-Create intersection-line-line

by careful: the order of selection of the two lines change
the result.

Regards,

--
Compass Ing. y Sistemas Dr. Ramon Ribo
http://www.compassis.com ramsan at compassis.com
c/ Manuel Girona, 61 bajos tel. +34 93 204 10 82
08034 Barcelona, Spain fax. +34 93 204 19 09

-----Mensaje original-----
De: gidlist-admin at gatxan.cimne.upc.es
[mailto:gidlist-admin at gatxan.cimne.upc.es] En nombre de Enrique Escolano
Enviado el: lunes, 12 de mayo de 2003 19:23
Para: gidlist at gatxan.cimne.upc.es
Asunto: Re: [GiDlist] NURBS surface division


1) To split the surface, the line points must divide the surface
boundary (it is not sufficient to be over the boundary, must be shared
by the boundary and the split lines)

2) If the lines are "approximately tangents", then you can use a
"Utilities-collapse-Lines" to join it. It exists another command to
force lines tangency (with a user-defined angle tolerance to select the
lines to be tangents). This command is only available from the right
buttons command: Geometry Edit TangentNurbsL (the lines must be of type
NurbLine, but any line can be converted with the menu
Geometry-Edit-Convert to NURBS-Line)

Convert the lines to NurbLine (in are of another type), force tangency,
for example until 35 degrees, and collapse the lines.

Enrique Escolano

----- Original Message -----
From: "My VDI Freemail" heim.ruediger at vdi.de
To: gidlist at gatxan.cimne.upc.es
Sent: Monday, May 12, 2003 4:44 PM
Subject: [GiDlist] NURBS surface division


I quite often encounter problems when I want to divide a NURBS surface

by
EditDivideSurfacesSplit.
Actually GiD rejects this function by giving the message: check point
xx. But the line I want to use for the surface division was generated
xxby
using points on the boundary and on the surface directly. What is the
reason?

Additionally I want to know, what is the best method to join lines,
which
as individual segments through geometry interfaces. Is there an
opportunity to join these segments to get one line only?

Thanks for your support.

Ruediger
_______________________________________________
GiDlist mailing list
GiDlist at gid.cimne.upc.es
http://gid.cimne.upc.es/mailman/listinfo/gidlist


_______________________________________________
GiDlist mailing list
GiDlist at gid.cimne.upc.es
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