Method CreateTransferFunction2D

Rendering/VolumeOpenGL2/vtkVolumeInputHelper.cxx:383–408

}

void vtkVolumeInputHelper::CreateTransferFunction2D(vtkRenderer* ren, int index)
{
  this->ReleaseGraphicsTransfer2D(ren->GetRenderWindow());

  unsigned int const num =
    this->ComponentMode == INDEPENDENT ? Texture->GetLoadedScalars()->GetNumberOfComponents() : 1;

  this->TransferFunctions2D =
    vtkSmartPointer<vtkOpenGLVolumeLookupTables<vtkOpenGLVolumeTransferFunction2D>>::New();
  this->TransferFunctions2D->Create(num);

  std::ostringstream idx;
  idx << index;

  this->GradientCacheName = "g_gradients_" + idx.str();

  for (unsigned int i = 0; i < num; i++)
  {
    std::ostringstream comp;
    comp << "[" << i << "]";

    this->TransferFunctions2DMap[i] = "in_transfer2D_" + idx.str() + comp.str();
  }

  this->LutInit.Modified();
}

void vtkVolumeInputHelper::ReleaseGraphicsResources(vtkWindow* window)
{