VTK/Examples/Cxx/Visualization/TextureMapImageData

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VTK Examples Baseline Visualization TestTextureMapImageData.png

This example creates an image and texture maps it onto a plane.

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;
}

Please try the new VTKExamples website.

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)
 
if(VTK_LIBRARIES)
  target_link_libraries(TextureMapImageData ${VTK_LIBRARIES})
else()
  target_link_libraries(TextureMapImageData vtkHybrid vtkWidgets)
endif()

Download and Build TextureMapImageData

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.

Show the plane in 3D space. Produce less "pixelated" image.