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List:       vtkusers
Subject:    [vtkusers] numpy_to_vtk and vtkPolyData
From:       Philip Winston <pwinston () gmail ! com>
Date:       2011-10-29 20:48:39
Message-ID: CA+bxaPQdtf6CqkHF5uCaZn0xEc1jtQXkWnKt7SewzwUiEnzRgA () mail ! gmail ! com
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Are there any examples showing how to populate a vtkPolyData with
verts/triangles from numpy arrays?

I have a solution right now where I loop through by hand adding points and
triangles, but it is slow.

I see there is a numpy_to_vtk utility function, but I'm not clear how to
setup my numpy arrays and what vtkPolyData functions I need to call.  I'm
imagining I want one Nx3 array with a vert per row (X Y Z).  And a second
Nx3 array of vert indexes with one triangle per row (v1 v2 v3)?  But I can
create whatever numpy arrays are needed, I just need help slurping them
into a vtkPolyData.

Thanks!

-Philip

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<div>Are there any examples showing how to=A0populate a vtkPolyData with ve=
rts/triangles from numpy arrays?=A0</div><div><br></div><div>I have a solut=
ion right now where I loop through by hand adding points and triangles, but=
 it is slow.</div>

<div><br></div><div>I see there is a numpy_to_vtk utility function, but I&#=
39;m not clear how to setup my numpy arrays and what vtkPolyData functions =
I need to call. =A0I&#39;m imagining I want one Nx3 array=A0with a vert per=
 row (X Y Z). =A0And a second Nx3 array of vert indexes with one triangle p=
er row (v1 v2 v3)? =A0But I can create whatever numpy arrays are needed, I =
just need help slurping them into a vtkPolyData.<br>

<br></div><div>Thanks!</div><div><br></div><div>-Philip</div><br>


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