ReadImageData
Repository source: ReadImageData
Description¶
This example reads an image data (.vti) file.
Question
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Code¶
ReadImageData.cxx
#include <vtkDataSetMapper.h>
#include <vtkNamedColors.h>
#include <vtkNew.h>
#include <vtkProperty.h>
#include <vtkRenderWindow.h>
#include <vtkRenderWindowInteractor.h>
#include <vtkRenderer.h>
#include <vtkXMLImageDataReader.h>
int main(int argc, char* argv[])
{
// Verify input arguments.
if (argc != 2)
{
std::cout << "Usage: " << argv[0] << " Filename.vti e.g. vase.vti"
<< std::endl;
return EXIT_FAILURE;
}
std::string inputFilename = argv[1];
vtkNew<vtkNamedColors> colors;
// Read the file.
vtkNew<vtkXMLImageDataReader> reader;
reader->SetFileName(inputFilename.c_str());
reader->Update();
// Visualize
vtkNew<vtkDataSetMapper> mapper;
mapper->SetInputConnection(reader->GetOutputPort());
vtkNew<vtkActor> actor;
actor->SetMapper(mapper);
actor->GetProperty()->SetRepresentationToWireframe();
vtkNew<vtkRenderer> renderer;
renderer->AddActor(actor);
renderer->ResetCamera();
renderer->SetBackground(colors->GetColor3d("Silver").GetData());
vtkNew<vtkRenderWindow> renderWindow;
renderWindow->AddRenderer(renderer);
renderWindow->SetWindowName("ReadImageData");
vtkNew<vtkRenderWindowInteractor> renderWindowInteractor;
renderWindowInteractor->SetRenderWindow(renderWindow);
renderWindow->Render();
renderWindowInteractor->Initialize();
renderWindowInteractor->Start();
return EXIT_SUCCESS;
}
CMakeLists.txt¶
cmake_minimum_required(VERSION 3.12 FATAL_ERROR)
project(ReadImageData)
find_package(VTK COMPONENTS
CommonColor
CommonCore
IOXML
InteractionStyle
RenderingContextOpenGL2
RenderingCore
RenderingFreeType
RenderingGL2PSOpenGL2
RenderingOpenGL2
)
if (NOT VTK_FOUND)
message(FATAL_ERROR "ReadImageData: Unable to find the VTK build folder.")
endif()
# Prevent a "command line is too long" failure in Windows.
set(CMAKE_NINJA_FORCE_RESPONSE_FILE "ON" CACHE BOOL "Force Ninja to use response files.")
add_executable(ReadImageData MACOSX_BUNDLE ReadImageData.cxx )
target_link_libraries(ReadImageData PRIVATE ${VTK_LIBRARIES}
)
# vtk_module_autoinit is needed
vtk_module_autoinit(
TARGETS ReadImageData
MODULES ${VTK_LIBRARIES}
)
Download and Build ReadImageData¶
Click here to download ReadImageData and its CMakeLists.txt file. Once the tarball ReadImageData.tar has been downloaded and extracted,
cd ReadImageData/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:
./ReadImageData
WINDOWS USERS
Be sure to add the VTK bin directory to your path. This will resolve the VTK dll's at run time.