Hey guys,<div><br></div><div>I've been trying to fix this all day and can't seem to figure out what the problem is.</div><div>I have a vtkMultiBlockDataSet that I want to draw contour lines on the surface of. </div>
<div><br></div><div>When I run the following code, the contour lines show up (correctly as well - matches Paraview's lines); however the lines are all solid color - white, instead of based on the lookup table... (I've also tried building a lookup table with the same results). I've debugged and checked that the m_NumberContours and other parameters are all okay... Although m_TargetArray is a qstring thats something like "Var 0 - f00000.00183.p3d" </div>
<div><br></div><div><br></div><div><div><span class="Apple-tab-span" style="white-space:pre"> </span>// Composite Pipeline</div><div><span class="Apple-tab-span" style="white-space:pre"> </span>vtkCompositeDataPipeline* prototype = vtkCompositeDataPipeline::New();</div>
<div><span class="Apple-tab-span" style="white-space:pre"> </span>vtkAlgorithm::SetDefaultExecutivePrototype(prototype);</div><div><span class="Apple-tab-span" style="white-space:pre"> </span>prototype->Delete();</div>
</div><div><br></div><div><div><span class="Apple-tab-span" style="white-space:pre"> </span>// Extract the Surface, then Contour</div><div><span class="Apple-tab-span" style="white-space:pre"> </span>vtkDataSetSurfaceFilter *surfaceFilter = vtkDataSetSurfaceFilter::New();</div>
<div><span class="Apple-tab-span" style="white-space:pre"> </span>surfaceFilter->SetInput(mb);</div><div><span class="Apple-tab-span" style="white-space:pre"> </span>m_ContourFilter = vtkContourFilter::New();</div><div>
<span class="Apple-tab-span" style="white-space:pre"> </span>m_ContourFilter->SetInputConnection(surfaceFilter->GetOutputPort());</div><div><span class="Apple-tab-span" style="white-space:pre"> </span>m_ContourFilter->SetInputArrayToProcess(0,0,0,</div>
<div><span class="Apple-tab-span" style="white-space:pre"> </span>vtkDataObject::FIELD_ASSOCIATION_POINTS,m_TargetArray.toAscii().constData());</div><div><span class="Apple-tab-span" style="white-space:pre"> </span>m_ContourFilter->GenerateValues(m_NumberContours, m_Min, m_Max);</div>
<div><span class="Apple-tab-span" style="white-space:pre"> </span>m_ContourFilter->ComputeScalarsOn();</div><div><span class="Apple-tab-span" style="white-space:pre"> </span>surfaceFilter->Delete();</div><div><br></div>
<div><span class="Apple-tab-span" style="white-space: pre; "> </span>// Mapper</div><div><span class="Apple-tab-span" style="white-space:pre"> </span>m_Mapper = vtkCompositePolyDataMapper::New();</div><div><span class="Apple-tab-span" style="white-space: pre; "> </span>m_Mapper->SetInputConnection( m_ContourFilter->GetOutputPort() );</div>
<div><div><span class="Apple-tab-span" style="white-space:pre"> </span>m_Mapper->SetScalarRange(m_Min, m_Max);</div><div><span class="Apple-tab-span" style="white-space:pre"> </span>m_Mapper->SetInterpolateScalarsBeforeMapping(1);</div>
<div><span class="Apple-tab-span" style="white-space:pre"> </span>m_Mapper->SetColorModeToMapScalars();</div></div><div><span class="Apple-tab-span" style="white-space:pre"> </span>m_Mapper->CreateDefaultLookupTable();</div>
<div><br></div><div><span class="Apple-tab-span" style="white-space: pre; "> </span>this->SetupScalarBar();</div><div><br></div><div><span class="Apple-tab-span" style="white-space: pre; "> </span>// Actor</div><div><div>
<span class="Apple-tab-span" style="white-space:pre"> </span>m_Actor = vtkLODActor::New();</div><div><span class="Apple-tab-span" style="white-space:pre"> </span>m_Actor->SetNumberOfCloudPoints(1000);</div><div><div><span class="Apple-tab-span" style="white-space:pre"> </span>m_Actor->GetProperty()->SetRepresentation(2);</div>
<div><span class="Apple-tab-span" style="white-space:pre"> </span>m_Actor->SetMapper(m_Mapper);</div><div><span class="Apple-tab-span" style="white-space:pre"> </span>m_Renderer->AddActor(m_Actor);</div><div><br></div>
<div><span class="Apple-tab-span" style="white-space:pre"> </span>vtkAlgorithm::SetDefaultExecutivePrototype(0);<span class="Apple-tab-span" style="white-space:pre"> </span>// End composite pipeline</div><div><br></div><div>
<br></div><div>A side question I have is about vtkAssignAttribute class - this class just assigns the active attribute correct? So if I wanted to show two contours from the same vtkPointData, I couldn't use this class?</div>
<div><br></div><div>Any info is appreciated!</div><div>Thanks,</div><div>Da</div><div><br></div><div><br></div></div></div></div>