ReadBMP
vtk-examples/Cxx/IO/ReadBMP
Question
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Code¶
ReadBMP.cxx
#include <vtkBMPReader.h>
#include <vtkImageViewer2.h>
#include <vtkNamedColors.h>
#include <vtkNew.h>
#include <vtkRenderWindow.h>
#include <vtkRenderWindowInteractor.h>
#include <vtkRenderer.h>
int main(int argc, char* argv[])
{
vtkNew<vtkNamedColors> colors;
// Verify input arguments
if (argc != 2)
{
std::cout << "Usage: " << argv[0] << " Filename(.bmp) e.g. masonry.bmp"
<< std::endl;
return EXIT_FAILURE;
}
// Read the image
vtkNew<vtkBMPReader> reader;
reader->SetFileName(argv[1]);
// Visualize
vtkNew<vtkImageViewer2> imageViewer;
imageViewer->SetInputConnection(reader->GetOutputPort());
vtkNew<vtkRenderWindowInteractor> renderWindowInteractor;
imageViewer->SetupInteractor(renderWindowInteractor);
imageViewer->Render();
imageViewer->GetRenderer()->SetBackground(
colors->GetColor3d("DarkSlateGray").GetData());
imageViewer->GetRenderWindow()->SetWindowName("ReadBMP");
imageViewer->GetRenderer()->ResetCamera();
imageViewer->Render();
renderWindowInteractor->Start();
return EXIT_SUCCESS;
}
CMakeLists.txt¶
cmake_minimum_required(VERSION 3.12 FATAL_ERROR)
project(ReadBMP)
find_package(VTK COMPONENTS
)
if (NOT VTK_FOUND)
message(FATAL_ERROR "ReadBMP: 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(ReadBMP MACOSX_BUNDLE ReadBMP.cxx )
target_link_libraries(ReadBMP PRIVATE ${VTK_LIBRARIES}
)
# vtk_module_autoinit is needed
vtk_module_autoinit(
TARGETS ReadBMP
MODULES ${VTK_LIBRARIES}
)
Download and Build ReadBMP¶
Click here to download ReadBMP and its CMakeLists.txt file. Once the tarball ReadBMP.tar has been downloaded and extracted,
cd ReadBMP/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:
./ReadBMP
WINDOWS USERS
Be sure to add the VTK bin directory to your path. This will resolve the VTK dll's at run time.