TextureMapImageData
VTKExamples/Cxx/Visualization/TextureMapImageData
Description¶
This example creates an image and texture maps it onto a plane.
Code¶
TextureMapImageData.cxx
#include <vtkSmartPointer.h> #include <vtkImageCanvasSource2D.h> #include <vtkPlaneSource.h> #include <vtkPolyDataMapper.h> #include <vtkRenderWindow.h> #include <vtkRenderWindowInteractor.h> #include <vtkRenderer.h> #include <vtkTexture.h> int main(int, char *[]) { // Create an image vtkSmartPointer<vtkImageCanvasSource2D> imageSource = vtkSmartPointer<vtkImageCanvasSource2D>::New(); imageSource->SetScalarTypeToUnsignedChar(); imageSource->SetExtent(0, 20, 0, 20, 0, 0); imageSource->SetNumberOfScalarComponents(3); imageSource->SetDrawColor(127,255,100); imageSource->FillBox(0,20,0,20); imageSource->SetDrawColor(20,20,20); imageSource->DrawSegment(0, 0, 19, 19); imageSource->DrawSegment(19, 0, 0, 19); imageSource->Update(); // Create a plane vtkSmartPointer<vtkPlaneSource> plane = vtkSmartPointer<vtkPlaneSource>::New(); plane->SetCenter(0.0, 0.0, 0.0); plane->SetNormal(0.0, 0.0, 1.0); // Apply the texture vtkSmartPointer<vtkTexture> texture = vtkSmartPointer<vtkTexture>::New(); texture->SetInputConnection(imageSource->GetOutputPort()); vtkSmartPointer<vtkPolyDataMapper> planeMapper = vtkSmartPointer<vtkPolyDataMapper>::New(); planeMapper->SetInputConnection(plane->GetOutputPort()); vtkSmartPointer<vtkActor> texturedPlane = vtkSmartPointer<vtkActor>::New(); texturedPlane->SetMapper(planeMapper); texturedPlane->SetTexture(texture); // Visualize the textured plane vtkSmartPointer<vtkRenderer> renderer = vtkSmartPointer<vtkRenderer>::New(); renderer->AddActor(texturedPlane); renderer->SetBackground(1,1,1); // Background color white renderer->ResetCamera(); vtkSmartPointer<vtkRenderWindow> renderWindow = vtkSmartPointer<vtkRenderWindow>::New(); renderWindow->AddRenderer(renderer); vtkSmartPointer<vtkRenderWindowInteractor> renderWindowInteractor = vtkSmartPointer<vtkRenderWindowInteractor>::New(); renderWindowInteractor->SetRenderWindow(renderWindow); renderWindow->Render(); renderWindowInteractor->Start(); return EXIT_SUCCESS; }
CMakeLists.txt¶
cmake_minimum_required(VERSION 2.8) PROJECT(TextureMapImageData) find_package(VTK REQUIRED) include(${VTK_USE_FILE}) add_executable(TextureMapImageData MACOSX_BUNDLE TextureMapImageData.cxx) target_link_libraries(TextureMapImageData ${VTK_LIBRARIES})
Download and Build TextureMapImageData¶
Danger
The generation of tar files has not been ported to the new VTKExamples. Some tarballs may be missing or out-of-date.
Click here to download TextureMapImageData and its CMakeLists.txt file. Once the tarball TextureMapImageData.tar has been downloaded and extracted,
cd TextureMapImageData/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:
./TextureMapImageData
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.