WriteBMP
VTKExamples/Cxx/IO/WriteBMP
Code
WriteBMP.cxx
#include <vtkImageData.h>
#include <vtkBMPWriter.h>
#include <vtkSmartPointer.h>
#include <vtkImageMapper3D.h>
#include <vtkImageCanvasSource2D.h>
#include <vtkRenderWindow.h>
#include <vtkRenderWindowInteractor.h>
#include <vtkRenderer.h>
#include <vtkImageActor.h>
#include <vtkBMPReader.h>
#include <vtkInteractorStyleImage.h>
int main(int argc, char *argv[])
{
if(argc != 2)
{
std::cout << "Required parameters: OutputFilename.tif" << std::endl;
return EXIT_FAILURE;
}
std::string filename = argv[1];
vtkSmartPointer<vtkImageCanvasSource2D> imageSource =
vtkSmartPointer<vtkImageCanvasSource2D>::New();
imageSource->SetScalarTypeToUnsignedChar();
imageSource->SetExtent(0,9,0,9,0,0);
imageSource->SetNumberOfScalarComponents(3);
imageSource->SetDrawColor(0, 0, 0, 0);
imageSource->FillBox(0,9,0,9);
imageSource->SetDrawColor(255, 0, 0, 0);
imageSource->FillBox(5,7,5,7);
imageSource->Update();
vtkSmartPointer<vtkBMPWriter> bmpWriter =
vtkSmartPointer<vtkBMPWriter>::New();
bmpWriter->SetFileName(filename.c_str());
bmpWriter->SetInputConnection(imageSource->GetOutputPort());
bmpWriter->Write();
// Read and display for verification
vtkSmartPointer<vtkBMPReader> reader =
vtkSmartPointer<vtkBMPReader>::New();
reader->SetFileName(filename.c_str());
reader->Update();
vtkSmartPointer<vtkImageActor> actor =
vtkSmartPointer<vtkImageActor>::New();
actor->GetMapper()->SetInputConnection(
reader->GetOutputPort());
// Setup renderer
vtkSmartPointer<vtkRenderer> renderer =
vtkSmartPointer<vtkRenderer>::New();
renderer->AddActor(actor);
renderer->ResetCamera();
// Setup render window
vtkSmartPointer<vtkRenderWindow> renderWindow =
vtkSmartPointer<vtkRenderWindow>::New();
renderWindow->AddRenderer(renderer);
// Setup render window interactor
vtkSmartPointer<vtkRenderWindowInteractor> renderWindowInteractor =
vtkSmartPointer<vtkRenderWindowInteractor>::New();
vtkSmartPointer<vtkInteractorStyleImage> style =
vtkSmartPointer<vtkInteractorStyleImage>::New();
renderWindowInteractor->SetInteractorStyle(style);
// Render and start interaction
renderWindowInteractor->SetRenderWindow(renderWindow);
renderWindowInteractor->Initialize();
renderWindowInteractor->Start();
return EXIT_SUCCESS;
}
CMakeLists.txt
cmake_minimum_required(VERSION 2.8)
PROJECT(WriteBMP)
find_package(VTK REQUIRED)
include(${VTK_USE_FILE})
add_executable(WriteBMP MACOSX_BUNDLE WriteBMP.cxx)
target_link_libraries(WriteBMP ${VTK_LIBRARIES})
Download and Build WriteBMP
Click here to download WriteBMP and its CMakeLists.txt file. Once the tarball WriteBMP.tar has been downloaded and extracted,
cd WriteBMP/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:
./WriteBMP
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.