<div dir="ltr">pgt.SetOutputPointsPrecision(vtkAlgorithm::<span style="color:rgb(0,0,0);font-family:Roboto,sans-serif;font-size:14px;line-height:22px;white-space:nowrap">DOUBLE_PRECISION )</span><br><div><span style="color:rgb(0,0,0);font-family:Roboto,sans-serif;font-size:14px;line-height:22px;white-space:nowrap"><br></span></div><div><span style="color:rgb(0,0,0);font-family:Roboto,sans-serif;font-size:14px;line-height:22px;white-space:nowrap">should work. Let us know if it doesn't.</span></div></div><div class="gmail_extra"><br><div class="gmail_quote">On Tue, Aug 18, 2015 at 11:07 AM, Jaap Verheggen <span dir="ltr"><<a href="mailto:jpmverheggen@gmail.com" target="_blank">jpmverheggen@gmail.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">
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Dear all, <br>
<br>
I am trying to transform polydata using double precision using
python and vtk 5.<br>
<br>
I can set the datatype for the points via
points.SetDataTypeToDouble()
.<br>
I create a surface using Delaunay. <br>
Using delaunay.GetOutput().GetPoints().GetDataType() I can check
that I still have double as datatype (11)<br>
After the transformation, the datatype is float,
pgt.GetOutput().GetPoints().GetDataType() gives float (10)<br>
<br>
How can I transform the polydata keeping double precision?<br>
<br>
Thanks in advance for your answer<br>
<br>
Code:<br>
points = vtk.vtkPoints()<br>
points.SetDataTypeToDouble()<br>
vertices = vtk.vtkCellArray()<br>
------ # Fill points and vertices with data <br>
# Create a polydata object<br>
point_pd = vtk.vtkPolyData()<br>
# Set the points and vertices as the geometry and topology of
the polydata<br>
point_pd.SetPoints(points)<br>
point_pd.SetVerts(vertices)<br>
# make the delaunay mesh<br>
boundary = vtk.vtkPolyData()<br>
boundary.SetPoints(point_pd.GetPoints())<br>
boundary.SetPolys(vertices)<br>
delaunay = vtk.vtkDelaunay2D()<br>
delaunay.SetInput(point_pd)<br>
delaunay.SetSource(boundary)<br>
delaunay.Update()<br>
<p style="margin-top:0px;margin-bottom:0px;margin-left:0px;margin-right:0px;text-indent:0px"> # Rotate</p>
<p style="margin-top:0px;margin-bottom:0px;margin-left:0px;margin-right:0px;text-indent:0px"> rotate = vtk.vtkTransform()</p>
<p style="margin-top:0px;margin-bottom:0px;margin-left:0px;margin-right:0px;text-indent:0px"> rotate.RotateWXYZ(5.0, 0, 0, 1)</p>
<p style="margin-top:0px;margin-bottom:0px;margin-left:0px;margin-right:0px;text-indent:0px"> pgt=vtk.vtkTransformPolyDataFilter()</p>
<p style="margin-top:0px;margin-bottom:0px;margin-left:0px;margin-right:0px;text-indent:0px"> pgt.SetTransform(rotate)</p>
<p style="margin-top:0px;margin-bottom:0px;margin-left:0px;margin-right:0px;text-indent:0px"> pgt.SetInput(delaunay.GetOutput())</p>
<p style="margin-top:0px;margin-bottom:0px;margin-left:0px;margin-right:0px;text-indent:0px"> pgt.Update()</p><span class="HOEnZb"><font color="#888888">
<br>
<br>
<pre cols="72">--
---------------------------
Jaap Verheggen
</pre>
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<br></blockquote></div><br><br clear="all"><div><br></div>-- <br><div class="gmail_signature">Cory Quammen<br>R&D Engineer<br>Kitware, Inc.</div>
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