meakcey
2018-11-24 14:17:20 UTC
Hi
I am trying to set and get GlobalIds which assigned in PolyData
Creating polydata snippet as follows
pcl::PointCloud<pcl::PointNormal>::Ptr pointCloud(new
pcl::PointCloud<pcl::PointNormal>);
pcl::io::loadPLYFile("scansample/constructedcloud.ply", *pointCloud);
qInfo() << "Size of point cloud " << pointCloud->size();
vtkSmartPointer<vtkPoints> points = vtkSmartPointer<vtkPoints>::New();
vtkSmartPointer<vtkUnsignedCharArray> colors =
vtkSmartPointer<vtkUnsignedCharArray>::New();
colors->SetNumberOfComponents(3);
colors->SetName ("Colors");
// Set point normals
vtkSmartPointer<vtkDoubleArray> pointNormalsArray =
vtkSmartPointer<vtkDoubleArray>::New();
pointNormalsArray->SetNumberOfComponents(3); //3d normals (ie x,y,z)
pointNormalsArray->SetName("Normals");
vtkSmartPointer<vtkIdTypeArray> pointIds =
vtkSmartPointer<vtkIdTypeArray>::New();
pointIds->SetNumberOfComponents(1);
pointIds->SetName("pointIds");
vtkSmartPointer<vtkIdTypeArray> globalIds =
vtkSmartPointer<vtkIdTypeArray>::New();
globalIds->SetNumberOfComponents(1);
globalIds->SetName("globalIds");
unsigned char tmpColor[3] = {200, 200, 100};
for(unsigned int i=0; i<pointCloud->size(); i++){
points->InsertNextPoint(pointCloud->points[i].x, pointCloud->points[i].y,
pointCloud->points[i].z);
double pn[3] = {pointCloud->points[i].normal_x,
pointCloud->points[i].normal_y, pointCloud->points[i].normal_z};
pointNormalsArray->InsertNextTypedTuple(pn);
colors->InsertNextTypedTuple(tmpColor);
pointIds->InsertNextValue(i);
globalIds->InsertNextValue(i);
}
vtkSmartPointer<vtkPolyData> pointsPoly =
vtkSmartPointer<vtkPolyData>::New();
pointsPoly->SetPoints(points);
vtkSmartPointer<vtkVertexGlyphFilter> vertexFilter =
vtkSmartPointer<vtkVertexGlyphFilter>::New();
//vertexFilter->SetInputConnection(idFilter->GetOutputPort());
vertexFilter->SetInputData(pointsPoly);
vertexFilter->Update();
vPointCloud = vtkSmartPointer<vtkPolyData>::New();
vPointCloud->ShallowCopy(vertexFilter->GetOutput());
vPointCloud->GetPointData()->SetScalars(colors);
vPointCloud->GetPointData()->SetNormals(pointNormalsArray);
vPointCloud->GetPointData()->AddArray(pointIds);
vPointCloud->GetPointData()->SetGlobalIds(globalIds);
vPointCloud->GetPointData()->CopyGlobalIdsOn();
Trying to reach pointdata through rubber band pick as follows
void interactorArea::OnLeftButtonUp(){
// Forward events
vtkInteractorStyleRubberBandPick::OnLeftButtonUp();
if(this->CurrentMode == VTKISRBP_SELECT){
vtkPlanes* frustum =
static_cast<vtkAreaPicker*>(this->GetInteractor()->GetPicker())->GetFrustum();
vtkSmartPointer<vtkExtractGeometry> extractGeometry =
vtkSmartPointer<vtkExtractGeometry>::New();
extractGeometry->SetImplicitFunction(frustum);
extractGeometry->SetInputData(this->Points);
extractGeometry->Update();
vtkSmartPointer<vtkSelectVisiblePoints> visiblePoints =
vtkSmartPointer<vtkSelectVisiblePoints>::New();
extractGeometry->GetOutput()->GetPointData()->CopyGlobalIdsOn();
visiblePoints->SetInputConnection(extractGeometry->GetOutputPort());
visiblePoints->SetRenderer(this->GetInteractor()->GetRenderWindow()->GetRenderers()->GetFirstRenderer());
visiblePoints->Update();
vtkSmartPointer<vtkVertexGlyphFilter> visibleFilter =
vtkSmartPointer<vtkVertexGlyphFilter>::New();
visiblePoints->GetOutput()->GetPointData()->CopyGlobalIdsOn();
visibleFilter->SetInputConnection(visiblePoints->GetOutputPort());
visibleFilter->Update();
vtkPolyData* visibles = visibleFilter->GetOutput();
std::cout << "Visible points " << visibles->GetNumberOfPoints() <<
std::endl;
if(selected->GetNumberOfPoints() <= 0){
std::cout << "Nothing selected" << std::endl;
return;
}
selectedIds = vtkSmartPointer<vtkIdTypeArray>::New();
selectedIds =
vtkIdTypeArray::SafeDownCast(visibles->GetPointData()->GetArray("pointIds"));
unsigned int idsize = selectedIds->GetNumberOfTuples();
for(unsigned int j=0; j<idsize; j++)
std::cout << selectedIds->GetValue(j) << " ";
std::cout << std::endl;
vtkSmartPointer<vtkIdTypeArray> globalIds =
vtkSmartPointer<vtkIdTypeArray>::New();
globalIds =
vtkIdTypeArray::SafeDownCast(visibles->GetPointData()->GetGlobalIds());
assert(globalIds);
std::cout << "Nof globalIds " << globalIds->GetNumberOfComponents()
<< " " << globalIds->GetNumberOfTuples() << std::endl;
}
}
I could get pointIds but could not get any part of the globalIds.
Program crashing at the line of
std::cout << "Nof globalIds " << globalIds->GetNumberOfComponents() << " "
<< globalIds->GetNumberOfTuples() << std::endl;
What's wrong with that?
Thanks
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I am trying to set and get GlobalIds which assigned in PolyData
Creating polydata snippet as follows
pcl::PointCloud<pcl::PointNormal>::Ptr pointCloud(new
pcl::PointCloud<pcl::PointNormal>);
pcl::io::loadPLYFile("scansample/constructedcloud.ply", *pointCloud);
qInfo() << "Size of point cloud " << pointCloud->size();
vtkSmartPointer<vtkPoints> points = vtkSmartPointer<vtkPoints>::New();
vtkSmartPointer<vtkUnsignedCharArray> colors =
vtkSmartPointer<vtkUnsignedCharArray>::New();
colors->SetNumberOfComponents(3);
colors->SetName ("Colors");
// Set point normals
vtkSmartPointer<vtkDoubleArray> pointNormalsArray =
vtkSmartPointer<vtkDoubleArray>::New();
pointNormalsArray->SetNumberOfComponents(3); //3d normals (ie x,y,z)
pointNormalsArray->SetName("Normals");
vtkSmartPointer<vtkIdTypeArray> pointIds =
vtkSmartPointer<vtkIdTypeArray>::New();
pointIds->SetNumberOfComponents(1);
pointIds->SetName("pointIds");
vtkSmartPointer<vtkIdTypeArray> globalIds =
vtkSmartPointer<vtkIdTypeArray>::New();
globalIds->SetNumberOfComponents(1);
globalIds->SetName("globalIds");
unsigned char tmpColor[3] = {200, 200, 100};
for(unsigned int i=0; i<pointCloud->size(); i++){
points->InsertNextPoint(pointCloud->points[i].x, pointCloud->points[i].y,
pointCloud->points[i].z);
double pn[3] = {pointCloud->points[i].normal_x,
pointCloud->points[i].normal_y, pointCloud->points[i].normal_z};
pointNormalsArray->InsertNextTypedTuple(pn);
colors->InsertNextTypedTuple(tmpColor);
pointIds->InsertNextValue(i);
globalIds->InsertNextValue(i);
}
vtkSmartPointer<vtkPolyData> pointsPoly =
vtkSmartPointer<vtkPolyData>::New();
pointsPoly->SetPoints(points);
vtkSmartPointer<vtkVertexGlyphFilter> vertexFilter =
vtkSmartPointer<vtkVertexGlyphFilter>::New();
//vertexFilter->SetInputConnection(idFilter->GetOutputPort());
vertexFilter->SetInputData(pointsPoly);
vertexFilter->Update();
vPointCloud = vtkSmartPointer<vtkPolyData>::New();
vPointCloud->ShallowCopy(vertexFilter->GetOutput());
vPointCloud->GetPointData()->SetScalars(colors);
vPointCloud->GetPointData()->SetNormals(pointNormalsArray);
vPointCloud->GetPointData()->AddArray(pointIds);
vPointCloud->GetPointData()->SetGlobalIds(globalIds);
vPointCloud->GetPointData()->CopyGlobalIdsOn();
Trying to reach pointdata through rubber band pick as follows
void interactorArea::OnLeftButtonUp(){
// Forward events
vtkInteractorStyleRubberBandPick::OnLeftButtonUp();
if(this->CurrentMode == VTKISRBP_SELECT){
vtkPlanes* frustum =
static_cast<vtkAreaPicker*>(this->GetInteractor()->GetPicker())->GetFrustum();
vtkSmartPointer<vtkExtractGeometry> extractGeometry =
vtkSmartPointer<vtkExtractGeometry>::New();
extractGeometry->SetImplicitFunction(frustum);
extractGeometry->SetInputData(this->Points);
extractGeometry->Update();
vtkSmartPointer<vtkSelectVisiblePoints> visiblePoints =
vtkSmartPointer<vtkSelectVisiblePoints>::New();
extractGeometry->GetOutput()->GetPointData()->CopyGlobalIdsOn();
visiblePoints->SetInputConnection(extractGeometry->GetOutputPort());
visiblePoints->SetRenderer(this->GetInteractor()->GetRenderWindow()->GetRenderers()->GetFirstRenderer());
visiblePoints->Update();
vtkSmartPointer<vtkVertexGlyphFilter> visibleFilter =
vtkSmartPointer<vtkVertexGlyphFilter>::New();
visiblePoints->GetOutput()->GetPointData()->CopyGlobalIdsOn();
visibleFilter->SetInputConnection(visiblePoints->GetOutputPort());
visibleFilter->Update();
vtkPolyData* visibles = visibleFilter->GetOutput();
std::cout << "Visible points " << visibles->GetNumberOfPoints() <<
std::endl;
if(selected->GetNumberOfPoints() <= 0){
std::cout << "Nothing selected" << std::endl;
return;
}
selectedIds = vtkSmartPointer<vtkIdTypeArray>::New();
selectedIds =
vtkIdTypeArray::SafeDownCast(visibles->GetPointData()->GetArray("pointIds"));
unsigned int idsize = selectedIds->GetNumberOfTuples();
for(unsigned int j=0; j<idsize; j++)
std::cout << selectedIds->GetValue(j) << " ";
std::cout << std::endl;
vtkSmartPointer<vtkIdTypeArray> globalIds =
vtkSmartPointer<vtkIdTypeArray>::New();
globalIds =
vtkIdTypeArray::SafeDownCast(visibles->GetPointData()->GetGlobalIds());
assert(globalIds);
std::cout << "Nof globalIds " << globalIds->GetNumberOfComponents()
<< " " << globalIds->GetNumberOfTuples() << std::endl;
}
}
I could get pointIds but could not get any part of the globalIds.
Program crashing at the line of
std::cout << "Nof globalIds " << globalIds->GetNumberOfComponents() << " "
<< globalIds->GetNumberOfTuples() << std::endl;
What's wrong with that?
Thanks
--
Sent from: http://vtk.1045678.n5.nabble.com/VTK-Users-f1224199.html
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Powered by www.kitware.com
Visit other Kitware open-source projects at http://www.kitware.com/opensource/opensource.html
Please keep messages on-topic and check the VTK FAQ at: http://www.vtk.org/Wiki/VTK_FAQ
Search the list archives at: http://markmail.org/search/?q=vtkusers
Follow this link to subscribe/unsubscribe:
https://public.kitware.com/mailman/listinfo/vtkusers