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List:       vtkusers
Subject:    Re: [vtkusers] starting Help
From:       Hugo Valdebenito <hugo () maptek ! cl>
Date:       2010-09-29 19:09:59
Message-ID: AANLkTinOxan8n-KGj0fPby2kv30smAJzh893NwVTDWc0 () mail ! gmail ! com
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The function is simple:

z = Zmax * Sin ((12.4 * x) / Nx ) +  (4 * y) / Ny

Mesh Nx * Ny ;   0< x <= Nx   and  0< y <= Ny
x and y integers

Hugo

2010/9/29 David Doria <daviddoria@gmail.com>

> On Wed, Sep 29, 2010 at 12:57 PM, Hugo Valdebenito <hugo@maptek.cl> wrote:
>
>> Hi David
>>
>> Thanks for you reply, I'm trying to make a 3D triangulation using a
>> surface function (depend of X and Y) using a regular mesh for x and y, my
>> idea is to generate big amount of points (or triangles) and generate a
>> triangulation. I'm comparing VTK with Open Inventor engine.
>>
>> Hugo
>>
>>
> This may be what you're looking for:
> http://www.vtk.org/Wiki/VTK/Examples/Cxx/Filters/TriangulateTerrainMap
>
> vtkDelaunay2D projects the points on to the XY plane before performing the
> triangulation, so you can give it your points (which are a function of x and
> y) and it will produce a nice result.
>
> David
>

[Attachment #5 (text/html)]

The function is simple:<br><br>z = Zmax * Sin ((12.4 * x) / Nx ) +  (4 * y) / \
Ny<br><br>Mesh Nx * Ny ;   0&lt; x &lt;= Nx   and  0&lt; y &lt;= Ny<br>x and y \
integers<br><br>Hugo<br><br><div class="gmail_quote">2010/9/29 David Doria <span \
dir="ltr">&lt;<a href="mailto:daviddoria@gmail.com">daviddoria@gmail.com</a>&gt;</span><br>
 <blockquote class="gmail_quote" style="margin: 0pt 0pt 0pt 0.8ex; border-left: 1px \
solid rgb(204, 204, 204); padding-left: 1ex;"><div class="gmail_quote"><div \
class="im">On Wed, Sep 29, 2010 at 12:57 PM, Hugo Valdebenito <span dir="ltr">&lt;<a \
href="mailto:hugo@maptek.cl" target="_blank">hugo@maptek.cl</a>&gt;</span> wrote:<br>

<blockquote class="gmail_quote" style="margin: 0pt 0pt 0pt 0.8ex; border-left: 1px \
solid rgb(204, 204, 204); padding-left: 1ex;">Hi David<br><br>Thanks for you reply, \
I&#39;m trying to make a 3D triangulation using a surface function (depend of X and \
Y) using a regular mesh for x and y, my idea is to generate big amount of points (or \
triangles) and generate a triangulation. I&#39;m comparing VTK with Open Inventor \
engine. <br>


<br>Hugo<br><br></blockquote><div><br></div></div><div>This may be what you&#39;re \
looking for: </div><a \
href="http://www.vtk.org/Wiki/VTK/Examples/Cxx/Filters/TriangulateTerrainMap" \
target="_blank">http://www.vtk.org/Wiki/VTK/Examples/Cxx/Filters/TriangulateTerrainMap</a></div>


<div class="gmail_quote"><br><div>vtkDelaunay2D projects the points on to the XY \
plane before performing the triangulation, so you can give it your points (which are \
a function of x and y) and it will produce a nice result.</div>

<div><br></div><font color="#888888"><div>David </div></font></div>
</blockquote></div><br>



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