Function vtkImageCanvasSource2DFillBox

Imaging/Sources/vtkImageCanvasSource2D.cxx:241–273

// Draw a data.  Only implentented for 2D extents.
template <class T>
void vtkImageCanvasSource2DFillBox(
  vtkImageData* image, double* drawColor, T* ptr, int min0, int max0, int min1, int max1)
{
  T *ptr0, *ptr1, *ptrV;
  int idx0, idx1, idxV;
  vtkIdType inc0, inc1, inc2;
  int maxV;
  double* pf;

  image->GetIncrements(inc0, inc1, inc2);
  maxV = image->GetNumberOfScalarComponents() - 1;

  ptr1 = ptr;
  for (idx1 = min1; idx1 <= max1; ++idx1)
  {
    ptr0 = ptr1;
    for (idx0 = min0; idx0 <= max0; ++idx0)
    {
      ptrV = ptr0;
      pf = drawColor;

      // Assign color to pixel.
      for (idxV = 0; idxV <= maxV; ++idxV)
      {
        *ptrV = static_cast<T>(*pf++);
        ptrV++;
      }

      ptr0 += inc0;
    }
    ptr1 += inc1;
  }
}

//------------------------------------------------------------------------------
// Draw a data.  Only implentented for 2D extents.