用VTK绘制流线，流线不能显示的问题

STARGAZERRRRR 2019-04-14 09:09:38

最近在用VTK可视化一个来自xflow的仿真流场数据，数据是vtu格式的，数据放入Paraview用streamtracer能够画出流线，但是当我自己用VTK可视化时却只能显示外边框。有没有大佬知道我程序出了什么问题？
程序如下：



#include<vtkXMLPolyDataReader.h>

#include<vtkSmartPointer.h>

#include<vtkPolyDataMapper.h>

#include<vtkActor.h>

#include<vtkRenderWindow.h>

#include<vtkRenderer.h>

#include<vtkRenderWindowInteractor.h>

#include<vtkXMLUnstructuredGridReader.h>

#include<vtkStreamTracer.h>

#include<vtkInteractorStyleTrackballCamera.h>

#include<vtkStructuredGridOutlineFilter.h>

#include<vtkPointSource.h>

#include<vtkProperty.h>

#include<vtkRungekutta4.h>

#include<vtkCellDataToPointData.h>

#include<vtkUnstructuredGrid.h>

#include<vtkDataSet.h>

#include<vtkNamedColors.h>

#include<vtkDatasetMapper.h>

#include<vtkOutlineFilter.h>

#include<vtkAssignAttribute.h>

#include<vtkGenericStreamtracer.h>

int main()

{

	//The color



	vtkSmartPointer<vtkNamedColors> namedColors = vtkSmartPointer<vtkNamedColors>::New();



	



	   //The AirplaneModel file

	std::string meshfilename = "K:/Project/VTKproject/Airplane_Process/data/Mesh.vtp";

	vtkSmartPointer<vtkXMLPolyDataReader> meshreader = vtkSmartPointer<vtkXMLPolyDataReader>::New();

	meshreader->SetFileName(meshfilename.c_str());

	meshreader->Update();



	   //The data file

	std::string datafilename ="K:/Project/VTKproject/Airplane_Process/data/data.vtu";

	vtkSmartPointer<vtkXMLUnstructuredGridReader> datareader = vtkSmartPointer<vtkXMLUnstructuredGridReader>::New();

	datareader->SetFileName(datafilename.c_str());

	datareader->Update();



	//The seed points

	vtkSmartPointer<vtkPointSource> seeds = vtkSmartPointer<vtkPointSource>::New();

	seeds->SetCenter(0,0,0);

	seeds->SetRadius(0.05);

	seeds->SetNumberOfPoints(100);





	//streamline generate

	

	vtkSmartPointer<vtkStreamTracer> streamline = vtkSmartPointer<vtkStreamTracer>::New();

	datareader->Update();

	streamline->SetInputConnection(datareader->GetOutputPort());

	streamline->SetSourceConnection(seeds->GetOutputPort());

	//streamline->SetIntegrationStepUnit(vtkStreamTracer::CELL_LENGTH_UNIT);

	streamline->SetMaximumPropagation(500);

	streamline->SetMaximumIntegrationStep(0.1);

	streamline->SetMinimumIntegrationStep(0.01);

	streamline->SetInitialIntegrationStep(0.05);

	//streamline->SetIntegrationStepUnit(vtkStreamTracer::CELL_LENGTH_UNIT);

	streamline->SetIntegrationDirectionToBoth();

	streamline->SetIntegratorTypeToRungeKutta45();

	streamline->Update();



	vtkSmartPointer<vtkPolyDataMapper> streamLineMapper = vtkSmartPointer<vtkPolyDataMapper>::New();

	streamLineMapper->SetInputConnection(streamline->GetOutputPort());



	vtkSmartPointer<vtkActor> streamLineActor = vtkSmartPointer<vtkActor>::New();

	streamLineActor->SetMapper(streamLineMapper);

	

	//outlinefilter

	vtkSmartPointer<vtkOutlineFilter> outline =vtkSmartPointer<vtkOutlineFilter>::New();

	outline->SetInputConnection(datareader->GetOutputPort());



	vtkSmartPointer<vtkPolyDataMapper> outlineMapper =vtkSmartPointer<vtkPolyDataMapper>::New();

	outlineMapper->SetInputConnection(outline->GetOutputPort());



	vtkSmartPointer<vtkActor> outlineActor =vtkSmartPointer<vtkActor>::New();

	outlineActor->SetMapper(outlineMapper);

	outlineActor->GetProperty()->SetColor(0,0,0);

	

    //

	vtkSmartPointer<vtkPolyDataMapper> meshmapper = vtkSmartPointer<vtkPolyDataMapper>::New();

	meshmapper->SetInputConnection(meshreader->GetOutputPort());



	vtkSmartPointer<vtkActor> meshactor = vtkSmartPointer<vtkActor>::New();

	meshactor->SetMapper(meshmapper);

	

	//rendering

	vtkSmartPointer<vtkRenderer> renderer = vtkSmartPointer<vtkRenderer>::New();

	renderer->AddActor(meshactor);

	renderer->AddActor(outlineActor);

	renderer->AddActor(streamLineActor);

	//renderer->AddActor(actor);

	renderer->SetBackground(namedColors->GetColor3d("Cadet").GetData());

	//window

	vtkSmartPointer<vtkRenderWindow> renderWindow = vtkSmartPointer<vtkRenderWindow>::New();

	renderWindow->AddRenderer(renderer);



	//interaction

	vtkSmartPointer<vtkRenderWindowInteractor> renderWindowInteractor = vtkSmartPointer<vtkRenderWindowInteractor>::New();

	renderWindowInteractor->SetRenderWindow(renderWindow);

	

	vtkSmartPointer<vtkInteractorStyleTrackballCamera> style =

		vtkSmartPointer<vtkInteractorStyleTrackballCamera>::New();

	renderWindowInteractor->SetInteractorStyle(style);

	renderWindowInteractor->Initialize();

	renderWindow->SetSize(300, 300);

	renderWindow->Render();

	renderWindowInteractor->Start();



	

}