Method SortBlocksBackToFront

Rendering/VolumeOpenGL2/vtkVolumeTexture.cxx:869–889

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//------------------------------------------------------------------------------
void vtkVolumeTexture::SortBlocksBackToFront(vtkRenderer* ren, vtkMatrix4x4* volumeMat)
{
  if (this->ImageDataBlocks.size() > 1)
  {
    vtkBlockSortHelper::BackToFront<vtkImageData> sortBlocks(ren, volumeMat);
    vtkBlockSortHelper::Sort(
      this->ImageDataBlocks.begin(), this->ImageDataBlocks.end(), sortBlocks);

    size_t const numBlocks = this->ImageDataBlocks.size();
    this->SortedVolumeBlocks.clear();
    this->SortedVolumeBlocks.reserve(numBlocks);
    for (size_t i = 0; i < numBlocks; i++)
    {
      this->SortedVolumeBlocks.push_back(this->ImageDataBlockMap[this->ImageDataBlocks[i]]);
    }

    // Load the first block
    auto firstBlock = this->SortedVolumeBlocks.at(0);
    this->LoadTexture(this->InterpolationType, firstBlock);
  }
}

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void vtkVolumeTexture::SetPartitions(int x, int y, int z)