ReadStructuredGrid
VTKExamples/Cxx/IO/ReadStructuredGrid
Description
This example reads a structured grid (.vts) file. An example file can be found at VTKData/Data/multicomb_0.vts
Code
ReadStructuredGrid.cxx
#include <vtkSmartPointer.h>
#include <vtkPolyDataMapper.h>
#include <vtkXMLStructuredGridReader.h>
#include <vtkStructuredGridGeometryFilter.h>
#include <vtkRenderWindow.h>
#include <vtkRenderWindowInteractor.h>
#include <vtkRenderer.h>
int main(int argc, char* argv[])
{
// Verify input arguments
if ( argc != 2 )
{
std::cout << "Usage: " << argv[0]
<< " Filename.vts" << std::endl;
return EXIT_FAILURE;
}
std::string inputFilename = argv[1];
// Read the file
vtkSmartPointer<vtkXMLStructuredGridReader> reader =
vtkSmartPointer<vtkXMLStructuredGridReader>::New();
reader->SetFileName(inputFilename.c_str());
reader->Update();
vtkSmartPointer<vtkStructuredGridGeometryFilter> geometryFilter =
vtkSmartPointer<vtkStructuredGridGeometryFilter>::New();
geometryFilter->SetInputConnection(reader->GetOutputPort());
geometryFilter->Update();
// Visualize
vtkSmartPointer<vtkPolyDataMapper> mapper =
vtkSmartPointer<vtkPolyDataMapper>::New();
mapper->SetInputConnection(geometryFilter->GetOutputPort());
vtkSmartPointer<vtkActor> actor =
vtkSmartPointer<vtkActor>::New();
actor->SetMapper(mapper);
vtkSmartPointer<vtkRenderer> renderer =
vtkSmartPointer<vtkRenderer>::New();
vtkSmartPointer<vtkRenderWindow> renderWindow =
vtkSmartPointer<vtkRenderWindow>::New();
renderWindow->AddRenderer(renderer);
vtkSmartPointer<vtkRenderWindowInteractor> renderWindowInteractor =
vtkSmartPointer<vtkRenderWindowInteractor>::New();
renderWindowInteractor->SetRenderWindow(renderWindow);
renderer->AddActor(actor);
renderer->SetBackground(.3, .6, .3); // Background color green
renderWindow->Render();
renderWindowInteractor->Start();
return EXIT_SUCCESS;
}
CMakeLists.txt
cmake_minimum_required(VERSION 2.8)
PROJECT(ReadStructuredGrid)
find_package(VTK REQUIRED)
include(${VTK_USE_FILE})
add_executable(ReadStructuredGrid MACOSX_BUNDLE ReadStructuredGrid.cxx)
target_link_libraries(ReadStructuredGrid ${VTK_LIBRARIES})
Download and Build ReadStructuredGrid
Click here to download ReadStructuredGrid and its CMakeLists.txt file. Once the tarball ReadStructuredGrid.tar has been downloaded and extracted,
cd ReadStructuredGrid/build
If VTK is installed:
cmake ..
If VTK is not installed but compiled on your system, you will need to specify the path to your VTK build:
cmake -DVTK_DIR:PATH=/home/me/vtk_build ..
Build the project:
make
and run it:
./ReadStructuredGrid
WINDOWS USERS PLEASE NOTE: Be sure to add the VTK bin directory to your path. This will resolve the VTK dll's at run time.