DrawShapes
VTKExamples/Cxx/Images/DrawShapes
Code
DrawShapes.cxx
#include <vtkRenderWindow.h>
#include <vtkRenderWindowInteractor.h>
#include <vtkRenderer.h>
#include <vtkImageData.h>
#include <vtkSmartPointer.h>
#include <vtkImageViewer2.h>
#include <vtkImageCanvasSource2D.h>
int main(int, char *[])
{
// Create a blank, black image
vtkSmartPointer<vtkImageCanvasSource2D> drawing =
vtkSmartPointer<vtkImageCanvasSource2D>::New();
drawing->SetScalarTypeToUnsignedChar();
drawing->SetNumberOfScalarComponents(3);
drawing->SetExtent(0, 20, 0, 50, 0, 0);
drawing->FillBox(0,20,0,50);
// Draw a red circle of radius 5 centered at (9,10)
//drawing->SetDrawColor(255, 0, 0, 0.5);
drawing->SetDrawColor(255, 0, 0, 0);
drawing->DrawCircle(9, 10, 5);
drawing->Update();
// View the result
vtkSmartPointer<vtkRenderWindowInteractor> renderWindowInteractor =
vtkSmartPointer<vtkRenderWindowInteractor>::New();
vtkSmartPointer<vtkImageViewer2> imageViewer =
vtkSmartPointer<vtkImageViewer2>::New();
imageViewer->SetInputConnection(drawing->GetOutputPort());
imageViewer->SetupInteractor(renderWindowInteractor);
imageViewer->GetRenderer()->ResetCamera();
imageViewer->GetRenderer()->SetBackground(1,1,1); //white background
renderWindowInteractor->Initialize();
renderWindowInteractor->Start();
return EXIT_SUCCESS;
}
CMakeLists.txt
cmake_minimum_required(VERSION 2.8)
PROJECT(DrawShapes)
find_package(VTK REQUIRED)
include(${VTK_USE_FILE})
add_executable(DrawShapes MACOSX_BUNDLE DrawShapes.cxx)
target_link_libraries(DrawShapes ${VTK_LIBRARIES})
Download and Build DrawShapes
Click here to download DrawShapes and its CMakeLists.txt file. Once the tarball DrawShapes.tar has been downloaded and extracted,
cd DrawShapes/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:
./DrawShapes
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.