Hmm, the documentation doesn't mention the interpolation method at all...<br><br>In any case, this would be implemented in CPU anyway - vtkDataSetAttributes runs only on the CPU. After all, this is the question of a few lookups and multiplications, which really shouldn't show a difference on either the CPU or the GPU at interaction speeds.<br>
<br>Regards,<br>Shash<br><br><div class="gmail_quote">On Tue, Jul 20, 2010 at 7:37 PM, Matt Clarkson <span dir="ltr"><<a href="mailto:clarkson@drc.ion.ucl.ac.uk">clarkson@drc.ion.ucl.ac.uk</a>></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;">
<div><div style="font-family: Arial; font-size: 10pt; color: rgb(0, 0, 0);">I agree.<br><br>However, I was asking because the documentation says it should do it, (but I can't work out how), and if it's done in openGL it will be faster than if I do it on the CPU, and also, it should be fewer lines of code, if it has already been implemented.<br>
<br>Thanks<br><font color="#888888"><br>Matt</font><div><div></div><div class="h5"><br><br>----- "Shashwath T.R." <<a href="mailto:trshash@gmail.com" target="_blank">trshash@gmail.com</a>> wrote:
<br>> Why would you need a special method? Just snap your input point to the image grid, and pick up the value there...<br>> <br>> Regards,<br>> Shash<br>> <br>> <div class="gmail_quote">> On Tue, Jul 20, 2010 at 5:18 PM, Matt Clarkson <span dir="ltr"><<a href="mailto:clarkson@drc.ion.ucl.ac.uk" target="_blank">clarkson@drc.ion.ucl.ac.uk</a>></span> wrote:<br>
>
<blockquote class="gmail_quote" style="border-left: 1px solid rgb(204, 204, 204); margin: 0pt 0pt 0pt 0.8ex; padding-left: 1ex;"><div><div style="font-family: Arial; font-size: 10pt; color: rgb(0, 0, 0);">> <span style="font-family: arial,helvetica,sans-serif;">Hi there,<br>
>
<br>> I'm
following this example:<br>> <a href="http://www.vtk.org/Wiki/VTK/Examples/Images/PickingAPixel" target="_blank">http://www.vtk.org/Wiki/VTK/Examples/Images/PickingAPixel</a><br>> <br>> However,
at the point:</span><br style="font-family: arial,helvetica,sans-serif;"><span style="font-family: arial,helvetica,sans-serif;">this</span><span style="font-family: arial,helvetica,sans-serif;">-</span><span style="font-family: arial,helvetica,sans-serif;">></span><span style="font-family: arial,helvetica,sans-serif;">PointData</span><span style="font-family: arial,helvetica,sans-serif;">-</span><span style="font-family: arial,helvetica,sans-serif;">></span><span style="font-family: arial,helvetica,sans-serif;">InterpolatePoint</span><span style="font-family: arial,helvetica,sans-serif;">(</span><span style="font-family: arial,helvetica,sans-serif;"> pd, </span><span style="font-family: arial,helvetica,sans-serif;">0</span><span style="font-family: arial,helvetica,sans-serif;">, cell</span><span style="font-family: arial,helvetica,sans-serif;">-</span><span style="font-family: arial,helvetica,sans-serif;">></span><span style="font-family: arial,helvetica,sans-serif;">PointIds, weights </span><span style="font-family: arial,helvetica,sans-serif;">)</span><span style="font-family: arial,helvetica,sans-serif;">;</span><br style="font-family: arial,helvetica,sans-serif;">
<pre style="font-family: arial,helvetica,sans-serif;">how would I do NearestNeighbour interpolation? It currently appears to be linear?<br>> <br>> I have tried looking at the doxygen for vtkDataSetAttributes, and there is some mention of setting the interpolation but I don't understand what I'm meant to set on what. Please can any one help me?<br>
>
<br>> Many thanks in advance<br>> <br>> Matt</pre><span><br>> <div><div>------------------------------------------------------<br>> Matt Clarkson Ph.D.<br>> Senior Research Associate<br>> <a href="mailto:m.clarkson@ucl.ac.uk" target="_blank">m.clarkson@ucl.ac.uk</a><br>
>
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