Hey Thomas, in the past I've done something like this and its worked out quite nicely for making large point clouds:<br><br> vtkPoints* pts = vtkPoints::New();<br> vtkCellArray* conn = vtkCellArray::New();<br> vtkPolyData* poly = vtkPolyData::New();<br>
<br> for (int i = 0; i < ptrToData->GetNumberOfTuples(); i++)<br> pts->InsertNextPoint(ptrToData->GetComponent(i, 0), ptrToData->GetComponent(i, 1), ptrToData->GetComponent(i, 2));<br><br> for (int i = 0; i < pts->GetNumberOfPoints(); i++)<br>
conn->InsertNextCell(1, &i);<br> <br> poly->SetPoints(pts);<br> poly->SetVerts(conn);<br> <br> vtkPolyDataMapper* pmap = vtkPolyDataMapper::New();<br> pmap->SetInput(poly);<br><br>
<br>Cheers,<br>
-SJ<br><br><br><br><div class="gmail_quote">On Thu, Sep 3, 2009 at 9:14 AM, Thomas Obenaus <span dir="ltr"><<a href="mailto:thomaso@eas.iis.fraunhofer.de">thomaso@eas.iis.fraunhofer.de</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;">
<br>
Hello,<br>
<br>
I have to visualize a point-cloud whose number of points varies from 10 to<br>
20000. At the Moment I use a sphere with low resolution for each point but<br>
the result is not satisfying (bad performance or ugly points). Is there a<br>
possibillity to draw points in VTK like using GL_POINTS in OpenGL?<br>
<br>
Thanks,<br>
Thomas.<br>
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