C++ (Cpp) RenderWindowItem Examples

Example #1

File: vtkLightBoxRendererManager.cpp Project: CJGoch/CTK

//---------------------------------------------------------------------------
void vtkLightBoxRendererManager::vtkInternal::setupRendering()
{
  assert(this->RenderWindow);
  
  // Remove only renderers managed by this light box
  for(RenderWindowItemListIt it = this->RenderWindowItemList.begin();
      it != this->RenderWindowItemList.end();
      ++it)
    {
    this->RenderWindow->GetRenderers()->RemoveItem((*it)->Renderer);
    }

  // Compute the width and height of each RenderWindowItem
  double viewportWidth  = 1.0 / static_cast<double>(this->RenderWindowColumnCount);
  double viewportHeight = 1.0 / static_cast<double>(this->RenderWindowRowCount);

  // Postion of the Top-Left corner of the RenderWindowItem
  float xMin, yMin;

  // Loop through RenderWindowItem
  for ( int rowId = 0; rowId < this->RenderWindowRowCount; ++rowId )
    {
    yMin = (this->RenderWindowRowCount - 1 - rowId) * viewportHeight;
    xMin = 0.0;

    for ( int columnId = 0; columnId < this->RenderWindowColumnCount; ++columnId )
      {
      // Get reference to the renderWindowItem
      RenderWindowItem * item  =
          this->RenderWindowItemList.at(
              this->External->ComputeRenderWindowItemId(rowId, columnId));

      // Set viewport
      item->SetViewport(xMin, yMin, viewportWidth, viewportHeight);

      // Add to RenderWindow
      this->RenderWindow->AddRenderer(item->Renderer);

      // Parallel projection is needed to prevent actors from warping/tilting
      // when they are near the edge of the window.
      vtkCamera* camera = item->Renderer->GetActiveCamera();
      if (camera)
        {
        camera->ParallelProjectionOn();
        }

      xMin += viewportWidth;
      }
    }
}

Example #2

File: vtkLightBoxRendererManager.cpp Project: 151706061/CTK

//---------------------------------------------------------------------------
void vtkLightBoxRendererManager::vtkInternal::setupRendering()
{
  assert(this->RenderWindow);
  
  // Remove only renderers managed by this light box
  for(RenderWindowItemListIt it = this->RenderWindowItemList.begin();
      it != this->RenderWindowItemList.end();
      ++it)
    {
    this->RenderWindow->GetRenderers()->RemoveItem((*it)->Renderer);
    }

  // Compute the width and height of each RenderWindowItem
  double viewportWidth  = 1.0 / static_cast<double>(this->RenderWindowColumnCount);
  double viewportHeight = 1.0 / static_cast<double>(this->RenderWindowRowCount);

  // Postion of the Top-Left corner of the RenderWindowItem
  float xMin, yMin;

  // Loop through RenderWindowItem
  for ( int rowId = 0; rowId < this->RenderWindowRowCount; ++rowId )
    {
    yMin = (this->RenderWindowRowCount - 1 - rowId) * viewportHeight;
    xMin = 0.0;

    for ( int columnId = 0; columnId < this->RenderWindowColumnCount; ++columnId )
      {
      // Get reference to the renderWindowItem
      RenderWindowItem * item  =
          this->RenderWindowItemList.at(
              this->External->ComputeRenderWindowItemId(rowId, columnId));

      // Set viewport
      item->SetViewport(xMin, yMin, viewportWidth, viewportHeight);

      // Add to RenderWindow
      this->RenderWindow->AddRenderer(item->Renderer);

      xMin += viewportWidth;
      }
    }
}