# TextureMapPlane

VTKExamples/Cxx/Visualization/TextureMapPlane

### Description

This example reads a jpg image file and uses it to texture map a plane.

### Code

TextureMapPlane.cxx

    #include <vtkImageData.h>
    #include <vtkJPEGReader.h>
    #include <vtkPolyDataMapper.h>
    #include <vtkPolyData.h>
    #include <vtkSmartPointer.h>
    #include <vtkTextureMapToPlane.h>
    #include <vtkPlaneSource.h>
    #include <vtkTexture.h>
    #include <vtkRenderer.h>
    #include <vtkRenderWindow.h>
    #include <vtkRenderWindowInteractor.h>

    int main ( int argc, char *argv[] )
    {
      // Parse command line arguments
      if ( argc != 2 )
      {
        std::cerr << "Usage: " << argv[0] << " Filename" << std::endl;
        return EXIT_FAILURE;
      }

      std::string inputFilename = argv[1];

      // Read the image which will be the texture
      vtkSmartPointer<vtkJPEGReader> jPEGReader =
        vtkSmartPointer<vtkJPEGReader>::New();
      jPEGReader->SetFileName ( inputFilename.c_str() );

      // 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(jPEGReader->GetOutputPort());

      vtkSmartPointer<vtkTextureMapToPlane> texturePlane =
        vtkSmartPointer<vtkTextureMapToPlane>::New();
      texturePlane->SetInputConnection(plane->GetOutputPort());

      vtkSmartPointer<vtkPolyDataMapper> planeMapper =
        vtkSmartPointer<vtkPolyDataMapper>::New();
      planeMapper->SetInputConnection(texturePlane->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, .2, .3); // Background color dark blue
      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 3.3 FATAL_ERROR)

    project(TextureMapPlane)

    find_package(VTK COMPONENTS
      vtkCommonCore
      vtkCommonDataModel
      vtkFiltersSources
      vtkFiltersTexture
      vtkIOImage
      vtkInteractionStyle
      vtkRenderingCore
      vtkRenderingFreeType
      vtkRenderingOpenGL2 QUIET)
    if (NOT VTK_FOUND)
      message("Skipping TextureMapPlane: ${VTK_NOT_FOUND_MESSAGE}")
      return ()
    endif()
    message (STATUS "VTK_VERSION: ${VTK_VERSION}")
    if (VTK_VERSION VERSION_LESS "8.90.0")
      # old system
      include(${VTK_USE_FILE})
      add_executable(TextureMapPlane MACOSX_BUNDLE TextureMapPlane.cxx )
      target_link_libraries(TextureMapPlane PRIVATE ${VTK_LIBRARIES})
    else ()
      # include all components
      add_executable(TextureMapPlane MACOSX_BUNDLE TextureMapPlane.cxx )
      target_link_libraries(TextureMapPlane PRIVATE ${VTK_LIBRARIES})
      # vtk_module_autoinit is needed
      vtk_module_autoinit(
        TARGETS TextureMapPlane
        MODULES ${VTK_LIBRARIES}
        )
    endif ()

### Download and Build TextureMapPlane

Click here to download TextureMapPlane and its CMakeLists.txt file. Once the tarball TextureMapPlane.tar has been downloaded and extracted,

    cd TextureMapPlane/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:

    ./TextureMapPlane

WINDOWS USERS

Be sure to add the VTK bin directory to your path. This will resolve the VTK dll's at run time.