[Gmsh] Define anchor points or lines.

[Billy Araujo]

Thanks ,

Thats exactly what I was looking for. I use gmsh frequently but I
didn't know it was capable of doing that.

Regards,

Billy.


On Wed, Apr 29, 2009 at 1:27 PM, Christophe Geuzaine
<cgeuzaine at ulg.ac.be> wrote:
> Billy Araujo wrote:
>>
>> Imagine I have a simple rectangular plane.
>>
>> Is it possible to define an anchor point, for example, at the center
>> so that the meshing creates a node at that point? How about
>> unconnected lines?
>>
>> I know this can be done dividing the rectangle into 4 smaller ones but
>> that is not what I was looking for.
>>
>
> Hi Billy - Yes, here's an example:
>
> ch_length = 0.4 ;
>
> p1 = newp; Point(p1) = {0, 0, 0, ch_length} ;
> p2 = newp; Point(p2) = {2, 0, 0, ch_length} ;
> p3 = newp; Point(p3) = {2, 5, 0, ch_length} ;
> p4 = newp; Point(p4) = {0, 5, 0, ch_length} ;
> p5 = newp; Point(p5) = {0.5, 2, 0, ch_length} ;
> p6 = newp; Point(p6) = {1, 1.6, 0, ch_length} ;
> p7 = newp; Point(p7) = {1.2, 2.6, 0, ch_length} ;
>
> l1 = newl; Line(l1) = {p1, p2} ;
> l2 = newl; Line(l2) = {p2, p3} ;
> l3 = newl; Line(l3) = {p3, p4} ;
> l4 = newl; Line(l4) = {p4, p1} ;
> l5 = newl; Line(l5) = {p6, p7} ;
>
> ll1 = newll; Line Loop (ll1) = {l1, l2, l3, l4} ;
> s1 = news; Plane Surface (s1) = {ll1} ;
>
> Point{p5} In Surface{s1} ;
> Line{l5} In Surface{s1} ;
>
>
> (Note that embedding lines is only supported by the MeshAdapt algorithm.)
>
>
>
>> Thanks in advance,
>>
>> Billy.
>>
>> _______________________________________________
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>> gmsh at geuz.org
>> http://www.geuz.org/mailman/listinfo/gmsh
>>
>>
>
>
> --
> Prof. Christophe Geuzaine
> University of Liege, Electrical Engineering and Computer Science
> http://www.montefiore.ulg.ac.be/~geuzaine
>