<div dir="ltr">Hi Fabian,<div><br></div><div>Try this method:</div><div><br></div><div><div> vtkPoints selectionPoints</div><div> selectionPoints InsertNextPoint 1.0 1.0 1.0</div><div># etc...</div><div><br></div><div>
vtkSelectPolyData select</div><div> select SetLoop selectionPoints</div><div># connect your data here</div><div> select SetInputConnection [mydataFilter GetOutputPort]</div><div> select GenerateSelectionScalarsOn</div>
<div> select SetSelectionModeToLargestRegion;</div><div><br></div><div> vtkClipPolyData selectclip</div><div> selectclip SetInputConnection [select GetOutputPort]</div><div> selectclip SetValue 0.0</div><div><br>
</div><div>__________________</div><div><br></div><div>Define a loop (your "window") by inserting points into selectionPoints.</div><div><br></div><div>Connect your data ("wall") to the input of vtkSelectPolyData.</div>
<div><br></div><div><div>You can use vtkClipPolyData::InsideOutOn() to change the output from the "window" to "wall"</div><div><br></div><div>hth</div><div><br></div><div>Goodwin</div><br class="Apple-interchange-newline">
</div><br><div class="gmail_quote">On Thu, Mar 15, 2012 at 12:26 PM, Fabian <span dir="ltr"><<a href="mailto:fabian-richter@gmx.de">fabian-richter@gmx.de</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
Hello advanced vtkusers,<br>
<br>
I have some polydata (lets say a plane surface) and would like to cut a<br>
rectangular hole in it.<br>
I have read quite a bit about implicit functions and the vtkCutter; but I<br>
simply don't understand how to use it.<br>
<br>
Could You please give me a clue if I am searching in the right direction?<br>
Do You have better ideas how to cut my polydata? (I dont' mean clipping...it<br>
is more like having a wall and cutting a window-opening).<br>
<br>
THANKS IN ADVANCED,<br>
Fabian<br>
<br>
--<br>
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