<div dir="ltr">I wasn't sure at first based on your comment, but I don't think vtkPointDataToCellData is meant to create Cells.<div>And if you don't create any cell, then you won't be able to see anything.</div><div>You can create a single polyverts with all the points ids.</div><div><br></div><div>vtkCellArray verts = new vtkCellArray();</div><div>verts.InsertNextCell( points.GetNumberOfPoints() );</div><div>for(int i=0; i < points.GetNumberOfPoints(); i++) {</div><div> verts.InsertNextPoint(i);</div><div>}</div><div><br></div><div>polyDataWithCells.SetVerts(verts)<br></div><div><br></div><div>The code above, should create the expected cells. Just be aware that it was written in a mail with uncertainty regarding the method names and class names.</div><div>But that should be enough to get you started with an appropriate IDE.</div><div><br></div><div>Seb</div></div><div class="gmail_extra"><br><div class="gmail_quote">On Tue, Sep 22, 2015 at 6:35 AM, Gerrick Bivins <span dir="ltr"><<a href="mailto:Gerrick.Bivins@halliburton.com" target="_blank">Gerrick.Bivins@halliburton.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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<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d">The vtp file seems invalid. It looks like the cells aren’t defined.<u></u><u></u></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d">Even if the polydata is just points, I think you still have to define the<u></u><u></u></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d">“Verts” cell array of the polydata.<u></u><u></u></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d"><u></u> <u></u></span></p>
<p class="MsoNormal"><img width="1429" height="781" src="cid:image001.jpg@01D0F509.4A5AF490"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d"><u></u><u></u></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d">Gerrick<u></u><u></u></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d"><u></u> <u></u></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d"><u></u> <u></u></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d"><u></u> <u></u></span></p>
<p class="MsoNormal"><span style="font-size:11.0pt;font-family:"Calibri","sans-serif";color:#1f497d"><u></u> <u></u></span></p>
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<p class="MsoNormal"><b><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif";color:windowtext">From:</span></b><span style="font-size:10.0pt;font-family:"Tahoma","sans-serif";color:windowtext"> vtkusers [mailto:<a href="mailto:vtkusers-bounces@vtk.org" target="_blank">vtkusers-bounces@vtk.org</a>]
<b>On Behalf Of </b>James Labiak<br>
<b>Sent:</b> Monday, September 21, 2015 8:05 PM<br>
<b>To:</b> Sebastien Jourdain<br>
<b>Cc:</b> vtkusers<br>
<b>Subject:</b> [EXTERNAL] Re: [vtkusers] Java vtkPointToCellData<u></u><u></u></span></p>
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<p class="MsoNormal"><u></u> <u></u></p>
<p class="MsoNormal" style="margin-bottom:12.0pt"><span style="font-size:10.0pt">Hi Sebastien,<br>
I made the change, but it still seems not to be running the filter. Attached is a java file and a .vtp data file to see what's happening. Also below is the code.<br>
Thanks,<br>
Jim<br>
<br>
package com.profiles;<br>
<br>
import vtk.*;<br>
<br>
public class PlotSomePolyDataFromFileRead {<br>
<br>
public static void main(String[] args) {<br>
try {<br>
new PlotSomePolyDataFromFileRead();<br>
} catch (Exception ex_new_PlotSomePolyDataFromFileRead) {<br>
System.out.println("[main] Exception at new PlotSomePolyDataFromFileRead()");<br>
ex_new_PlotSomePolyDataFromFileRead.printStackTrace();<br>
}<br>
}<br>
<br>
// Load VTK libraries<br>
static {<br>
if (!vtkNativeLibrary.LoadAllNativeLibraries()) {<br>
{<br>
for (vtkNativeLibrary lib : vtkNativeLibrary.values()) {<br>
if (!lib.IsLoaded())<br>
System.out<br>
.println(lib.GetLibraryName() + " not loaded");<br>
}<br>
System.out.println("Make sure the search path is correct: ");<br>
System.out.println(System.getProperty("java.library.path"));<br>
}<br>
vtkNativeLibrary.DisableOutputWindow(null);<br>
}<br>
}<br>
<br>
private PlotSomePolyDataFromFileRead() {<br>
<br>
// Read the polyData from the data file<br>
vtkXMLPolyDataReader xmlReader = new vtkXMLPolyDataReader();<br>
xmlReader.SetFileName("C:\\vtk123\\test_data.vtp");<br>
xmlReader.Update();<br>
<br>
// Use the filter vtkPointDataToCellData to create the<br>
// cells from the point data that's in the vtkPolyData from the reader<br>
// *The vtkPolyData from the reader intentionally only includes vtkPoints<br>
// and their scalars (that's the given data from the application output)<br>
vtkPointDataToCellData polyDataCreateCells = new vtkPointDataToCellData();<br>
polyDataCreateCells.SetInputConnection(xmlReader.GetOutputPort());<br>
polyDataCreateCells.PassPointDataOn();<br>
polyDataCreateCells.Update();<br>
<br>
// In order to check if the vtkPointDataToCellData filter worked:<br>
// Create new polyData, retrieve polyData (with cells now) from<br>
// polyDataCreateCells filter, check values during debug operation<br>
vtkPolyData polyDataWithCells = new vtkPolyData();<br>
polyDataWithCells = polyDataCreateCells.GetPolyDataOutput();<br>
// At this point, polyDataWithCells has (when I run it)<br>
// point data but not cell data, nor scalar data <br>
// and it should have all 3<br>
<br>
vtkPolyDataMapper polyMapper = new vtkPolyDataMapper();<br>
polyMapper.SetInputData(polyDataCreateCells.GetPolyDataOutput());<br>
polyMapper.Update();<br>
<br>
vtkActor polyActor = new vtkActor();<br>
polyActor.SetMapper(polyMapper);<br>
polyActor.GetProperty().SetColor(1.0, 1.0, 1.0);<br>
<br>
vtkRenderer renderer = new vtkRenderer();<br>
renderer.AddActor(polyActor);<br>
renderer.SetBackground(0.0, 0.0, 0.0);<br>
<br>
vtkRenderWindow renderWindow = new vtkRenderWindow();<br>
renderWindow.AddRenderer(renderer);<br>
renderWindow.SetSize(800, 800);<br>
<br>
vtkRenderWindowInteractor renderWindowInteractor = new vtkRenderWindowInteractor();<br>
renderWindowInteractor.SetRenderWindow(renderWindow);<br>
<br>
renderWindow.Render();<br>
renderWindowInteractor.Start();<br>
}<br>
}<br>
<br>
</span><u></u><u></u></p>
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<p class="MsoNormal">On 9/21/2015 10:38 AM, Sebastien Jourdain wrote:<u></u><u></u></p>
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<p class="MsoNormal">Try that <u></u><u></u></p>
<div>
<p class="MsoNormal"><u></u> <u></u></p>
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<div>
<p class="MsoNormal">vtkPointDataToCellData polyDataCreateCells = new vtkPointDataToCellData();<br>
polyDataCreateCells.SetInputData(polyData);<br>
polyDataCreateCells.PassPointDataOn();<br>
polyDataCreateCells.Update(); // <==== For the execution of the filter<u></u><u></u></p>
</div>
<div>
<p class="MsoNormal"><br>
// Create new polyData, retrieve completed polyData from polyDataCreateCells<br>
vtkPolyData polyDataComplete = polyDataCreateCells.GetPolyDataOutput(); // No need to create a polydata just get a ref from the filter<u></u><u></u></p>
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<p class="MsoNormal"><u></u> <u></u></p>
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<p class="MsoNormal">On Mon, Sep 21, 2015 at 8:20 AM, James Labiak <<a href="mailto:jim@jslengineeringsoftware.com" target="_blank">jim@jslengineeringsoftware.com</a>> wrote:<u></u><u></u></p>
<div>
<p class="MsoNormal"><span style="font-size:10.0pt">Hello all,<br>
I created a pipeline that seems to make sense to me, but always my polyDataComplete is empty. Any ideas why this code doesn't work? The only vtkPointToCellData example on the web that I can find uses blow.vtk, which doesn't exist on my 6.0.0 installation anywhere.
The polyData variable gets correctly populated with the points and their scalars below.<br>
<br>
// Create a new, empty polyData<br>
polyData = new vtkPolyData();<br>
<br>
// populate the polyData points<br>
polyData.SetPoints(points);<br>
<br>
// populate the polyData scalars<br>
polyData.GetPointData().SetScalars(colorsScalars);<br>
<br>
vtkPointDataToCellData polyDataCreateCells = new vtkPointDataToCellData();<br>
polyDataCreateCells.SetInputData(polyData);<br>
polyDataCreateCells.PassPointDataOn();<br>
<br>
// Create new polyData, retrieve completed polyData from polyDataCreateCells<br>
vtkPolyData polyDataComplete = new vtkPolyData();<br>
polyDataComplete = polyDataCreateCells.GetPolyDataOutput();<br>
<br>
vtkPolyDataMapper polyMapper = new vtkPolyDataMapper();<br>
polyMapper.SetInputData(polyDataComplete);<br>
polyMapper.ScalarVisibilityOn();<br>
polyMapper.SetScalarRange(scalarMin, scalarMax);<br>
polyMapper.Update();<br>
<br>
vtkActor polyActor = new vtkActor();<br>
polyActor.SetMapper(polyMapper);<br>
polyActor.GetProperty().SetColor(1.0, 1.0, 1.0);<br>
<br>
// ...Usual render stuff...<br>
<br>
Thanks,<br>
Jim</span><u></u><u></u></p>
</div>
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