Method GetBoundingBox

Rendering/Core/vtkTextActor.cxx:127–158

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//------------------------------------------------------------------------------
void vtkTextActor::GetBoundingBox(vtkViewport* vport, double bbox[4])
{
  if (this->UpdateRectangle(vport) && this->RectanglePoints &&
    this->RectanglePoints->GetNumberOfPoints() >= 4)
  {
    double x[3];
    this->RectanglePoints->GetPoint(0, x);
    bbox[0] = bbox[1] = x[0];
    bbox[2] = bbox[3] = x[1];
    for (int i = 1; i < this->RectanglePoints->GetNumberOfPoints(); ++i)
    {
      this->RectanglePoints->GetPoint(i, x);

      if (bbox[0] > x[0])
        bbox[0] = x[0];
      else if (bbox[1] < x[0])
        bbox[1] = x[0];

      if (bbox[2] > x[1])
        bbox[2] = x[1];
      else if (bbox[3] < x[1])
        bbox[3] = x[1];
    }
    // Use pixel centers rather than pixel corners for the coordinates.
    --bbox[1];
    --bbox[3];
  }
  else
  {
    vtkErrorMacro("UpdateRectangle failed to do so");
  }
}

//------------------------------------------------------------------------------
void vtkTextActor::GetSize(vtkViewport* vport, double size[2])