Function mitkTransferFunctionTest

Modules/Core/test/mitkTransferFunctionTest.cpp:28–235

* Unit test for class mitk::TransferFunction. * * argc and argv are the command line parameters which were passed to * the ADD_TEST command in the CMakeLists.txt file. For the automatic * tests, argv is either empty for the simple tests or contains the filename * of a test image for the image tests (see CMakeLists.txt). */

*  of a test image for the image tests (see CMakeLists.txt).
*/
int mitkTransferFunctionTest(int /* argc */, char * /*argv*/ [])
{
  // always start with this!
  MITK_TEST_BEGIN("TransferFunction");

  // let's create an object of our class
  mitk::TransferFunction::Pointer myTransferFunction = mitk::TransferFunction::New();

  // first test: did this work?
  // using MITK_TEST_CONDITION_REQUIRED makes the test stop after failure, since
  // it makes no sense to continue without an object.
  MITK_TEST_CONDITION_REQUIRED(myTransferFunction.IsNotNull(), "Testing instantiation");

  /*************************************************************************/
  // Create and set control point arrays for scalar opacity transfer function
  mitk::TransferFunction::ControlPoints scalarOpacityPoints;
  scalarOpacityPoints.push_back(std::make_pair(0.0, 0.0));
  scalarOpacityPoints.push_back(std::make_pair(5.0, 0.3));
  scalarOpacityPoints.push_back(std::make_pair(10.0, 1.0));
  myTransferFunction->SetScalarOpacityPoints(scalarOpacityPoints);
  MITK_TEST_CONDITION_REQUIRED(myTransferFunction->GetScalarOpacityFunction()->GetSize() == 3,
                               "Adding three point/value pairs to scalar opacity transfer function via VTK interface");

  // Create and set control point arrays for gradient opacity transfer function
  mitk::TransferFunction::ControlPoints gradientOpacityPoints;
  gradientOpacityPoints.push_back(std::make_pair(0.0, 0.2));
  gradientOpacityPoints.push_back(std::make_pair(3.0, 0.7));
  gradientOpacityPoints.push_back(std::make_pair(7.0, 0.8));
  gradientOpacityPoints.push_back(std::make_pair(15.0, 0.9));
  myTransferFunction->SetGradientOpacityPoints(gradientOpacityPoints);
  MITK_TEST_CONDITION_REQUIRED(myTransferFunction->GetGradientOpacityFunction()->GetSize() == 4,
                               "Adding four point/value pairs to gradient opacity transfer function via VTK interface");

  // Create and set control point arrays for color transfer function
  mitk::TransferFunction::RGBControlPoints colorPoints;
  itk::RGBPixel<double> rgb0, rgb1, rgb2, rgb3;
  rgb0[0] = 0.1f;
  rgb0[1] = 0.3f;
  rgb0[2] = 0.5f;
  colorPoints.push_back(std::make_pair(2.0, rgb0));
  rgb1[0] = 0.3;
  rgb1[1] = 0.8;
  rgb1[2] = 0.9;
  colorPoints.push_back(std::make_pair(3.0, rgb1));
  rgb2[0] = 0.6;
  rgb2[1] = 0.5;
  rgb2[2] = 0.4;
  colorPoints.push_back(std::make_pair(4.0, rgb2));
  rgb3[0] = 0.7;
  rgb3[1] = 0.1;
  rgb3[2] = 0.2;
  colorPoints.push_back(std::make_pair(5.0, rgb3));

  myTransferFunction->SetRGBPoints(colorPoints);
  MITK_TEST_CONDITION_REQUIRED(myTransferFunction->GetColorTransferFunction()->GetSize() == 4,
                               "Adding four point/value pairs to color transfer function via VTK interface");

  /*************************************************************************/