[vtkusers] How to interpolate?

[Shashwath T.R.]

Hi Rakesh,

Have a look at EvaluatePosition on vtkCell:
http://www.vtk.org/doc/nightly/html/classvtkCell.html#a463203095c011df36980b4677e8825b0

Among other things, it will return the interpolation weights of a point on a
cell. For a triangle, you'll get three weights, and you can use those to
interpolate the values from each of the points.

Regards,
Shash

On Wed, Sep 22, 2010 at 1:59 PM, rakesh patil <prakeshofficial at gmail.com>wrote:

> Hello,
>
> I have three nodes of an element (triangle). The z value of all these three
> nodes are stored as bathymetry(depth value). Now using these three nodes,
> can I get the depth value of any other point inside the same triangle?
>
> I have one function, but it takes some time. So i wanted to know whether
> there is any inbuilt function in VTK to do this which may be much faster
> compared to one what i have.
>
> Thanks
>
> Regards
> Rakesh Patil
>
>
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