[GiDlist] [Fwd: Basic NURBS line problem: Given a line and

[Miguel A. de Riera Pasenau]

-------- Original Message --------
Subject: Basic NURBS line problem: Given a line and a point not in the line ...
Date: Thu, 19 Sep 2002 14:42:45 -0700
From: Paul Pikowsky pksky at finestplanet.com
Reply-To: pksky at gtcinternet.com
To: gidlist-admin at gatxan.cimne.upc.es

I have a basic NURBS line problem that I cannot solve.

Given a line and a point not in the line, how do I create a NURBS line that
begins in the line, passes through the point and ends in the line again so
that the NURBS line is tangent at both points where it meets the line?

A similar problem that is discussed in the Help file is creating a closed
curve.

I can do this by adding a few points to generate a curve and then I go to the
context menu. First I select Last Point and then Connect C-a and then select
the first point I created. The curve closes up nicely, but I can't seem to
figure out how to make the closed NURBS curve tangent to itself at the first
and last point when I close it up. The options that the Help file suggest do
not seem to appear in the context menu.

While struggling with this problem, I find GiD crashes a great deal too.

Paul Pikowsky, pksky at finestplanet.com

[Ramon Ribó]

Hello,

To make a closed NURBS line tangent in the origin/end point, it
is possible to use:

- Select with Control-a the first point
- In contextual submenu use 'Tangents','Next','By line'

Regards,

--
Compass Ing. y Sistemas Dr. Ramon Ribó
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 Miguel A. de
Riera Pasenau
Enviado el: viernes, 20 de septiembre de 2002 9:40
Para: _ GiD List
Asunto: [GiDlist] [Fwd: Basic NURBS line problem: Given a line and a
point not in the line ...]




-------- Original Message --------
Subject: Basic NURBS line problem: Given a line and a point not in the line
...
Date: Thu, 19 Sep 2002 14:42:45 -0700
From: Paul Pikowsky pksky at finestplanet.com
Reply-To: pksky at gtcinternet.com
To: gidlist-admin at gatxan.cimne.upc.es

I have a basic NURBS line problem that I cannot solve.

Given a line and a point not in the line, how do I create a NURBS line that
begins in the line, passes through the point and ends in the line again so
that the NURBS line is tangent at both points where it meets the line?

A similar problem that is discussed in the Help file is creating a closed
curve.

I can do this by adding a few points to generate a curve and then I go to
the
context menu. First I select Last Point and then Connect C-a and then
select
the first point I created. The curve closes up nicely, but I can't seem to
figure out how to make the closed NURBS curve tangent to itself at the first
and last point when I close it up. The options that the Help file suggest
do
not seem to appear in the context menu.

While struggling with this problem, I find GiD crashes a great deal too.

Paul Pikowsky, pksky at finestplanet.com
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